+/* vi: set sw=4 ts=4: */
/*
* httpd implementation for busybox
*
- * Copyright (C) 2002 Glenn Engel <glenne@engel.org>
+ * Copyright (C) 2002,2003 Glenn Engel <glenne@engel.org>
+ * Copyright (C) 2003-2006 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
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*
*****************************************************************************
*
- * 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.
+ *
+ * Doc:
+ * "CGI Environment Variables": http://hoohoo.ncsa.uiuc.edu/cgi/env.html
*
* 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
+ * presentation. -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 /
-
*
- * To open up the server:
- * ip:* # Allow any IP address
- * /:* # no password required for urls starting with / (all)
+ * 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
+ * *.php:/path/php # running cgi.php scripts through an interpreter
*
- * Processing of the file stops on the first sucessful match. If the file
- * is not found, the server is assumed to be wide open.
+ * A/D may be as a/d or allow/deny - first char case insensitive
+ * Deny IP rules take precedence over allow rules.
*
- *****************************************************************************
*
- * 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 <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/stat.h>
-#include <sys/wait.h>
-#include <fcntl.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
+ * 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.
+ *
+*/
+
+
+#include "busybox.h"
+
+
+static const char httpdVersion[] = "busybox httpd/1.35 6-Oct-2004";
+static const char default_path_httpd_conf[] = "/etc";
+static const char httpd_conf[] = "httpd.conf";
+static const char home[] = "./";
+
+#define TIMEOUT 60
+
+// Note: busybox 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
-#else
-/* standalone */
-#define CONFIG_FEATURE_HTTPD_BASIC_AUTH
-void show_usage()
-{
- fprintf(stderr,"Usage: httpd [-p <port>] [-c configFile] [-d/-e <string>] [-r realm]\n");
-}
+// As a result, all memory allocation after daemonize
+// is checked rigorously
+
+//#define DEBUG 1
+
+#ifndef DEBUG
+# define DEBUG 0
#endif
-/* minimal global vars for busybox */
-#ifndef ENVSIZE
-#define ENVSIZE 50
+#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];
+
+ USE_FEATURE_HTTPD_BASIC_AUTH(const char *realm;)
+ USE_FEATURE_HTTPD_BASIC_AUTH(char *remoteuser;)
+
+ const char *query;
+
+ USE_FEATURE_HTTPD_CGI(char *referer;)
+
+ const char *configFile;
+
+ unsigned int rmt_ip;
+#if ENABLE_FEATURE_HTTPD_CGI || DEBUG
+ char rmt_ip_str[16]; /* for set env REMOTE_ADDR */
#endif
-int debugHttpd;
-static char **envp;
-static int envCount;
-static char *realm = "Web Server Authentication";
-static char *configFile;
+ unsigned port; /* server initial port and for
+ set env REMOTE_PORT */
+ const char *found_mime_type;
+ const char *found_moved_temporarily;
+
+ off_t ContentLength; /* -1 - unknown */
+ time_t last_mod;
+
+ Htaccess_IP *ip_a_d; /* config allow/deny lines */
+ int flg_deny_all;
+#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
+ Htaccess *auth; /* config user:password lines */
+#endif
+#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
+ Htaccess *mime_a; /* config mime types */
+#endif
+
+ int server_socket;
+ int accepted_socket;
+ volatile int alarm_signaled;
+
+#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
+ Htaccess *script_i; /* config script interpreters */
+#endif
+} HttpdConfig;
+
+static HttpdConfig *config;
+
+static const char request_GET[] = "GET"; /* size algorithmic optimize */
static const char* const suffixTable [] = {
- ".htm.html", "text/html",
- ".jpg.jpeg", "image/jpeg",
- ".gif", "image/gif",
- ".png", "image/png",
- ".txt.h.c.cc.cpp", "text/plain",
- 0,0
- };
-
-typedef enum
-{
- HTTP_OK = 200,
- HTTP_UNAUTHORIZED = 401, /* authentication needed, respond with auth hdr */
- HTTP_NOT_FOUND = 404,
- HTTP_INTERNAL_SERVER_ERROR = 500,
- HTTP_NOT_IMPLEMENTED = 501, /* used for unrecognized requests */
- HTTP_BAD_REQUEST = 400, /* malformed syntax */
+/* Warning: shorted equivalent 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",
+ ".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_MOVED_TEMPORARILY = 302,
+ HTTP_BAD_REQUEST = 400, /* malformed syntax */
+ HTTP_UNAUTHORIZED = 401, /* authentication needed, respond with auth hdr */
+ HTTP_NOT_FOUND = 404,
+ HTTP_FORBIDDEN = 403,
+ HTTP_REQUEST_TIMEOUT = 408,
+ HTTP_NOT_IMPLEMENTED = 501, /* used for unrecognized requests */
+ HTTP_INTERNAL_SERVER_ERROR = 500,
#if 0 /* future use */
- HTTP_CONTINUE = 100,
- HTTP_SWITCHING_PROTOCOLS = 101,
- HTTP_CREATED = 201,
- HTTP_ACCEPTED = 202,
- HTTP_NON_AUTHORITATIVE_INFO = 203,
- HTTP_NO_CONTENT = 204,
- HTTP_MULTIPLE_CHOICES = 300,
- HTTP_MOVED_PERMANENTLY = 301,
- 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
+ HTTP_CONTINUE = 100,
+ HTTP_SWITCHING_PROTOCOLS = 101,
+ HTTP_CREATED = 201,
+ HTTP_ACCEPTED = 202,
+ HTTP_NON_AUTHORITATIVE_INFO = 203,
+ HTTP_NO_CONTENT = 204,
+ HTTP_MULTIPLE_CHOICES = 300,
+ HTTP_MOVED_PERMANENTLY = 301,
+ HTTP_NOT_MODIFIED = 304,
+ HTTP_PAYMENT_REQUIRED = 402,
+ HTTP_BAD_GATEWAY = 502,
+ HTTP_SERVICE_UNAVAILABLE = 503, /* overload, maintenance */
+ HTTP_RESPONSE_SETSIZE = 0xffffffff
#endif
} HttpResponseNum;
-typedef struct
-{
- HttpResponseNum type;
- const char *name;
- const char *info;
+typedef struct {
+ HttpResponseNum type;
+ const char *name;
+ const char *info;
} HttpEnumString;
static const HttpEnumString httpResponseNames[] = {
- { HTTP_OK, "OK" },
- { HTTP_NOT_IMPLEMENTED, "Not Implemented",
- "The requested method is not recognized by this server." },
- { HTTP_UNAUTHORIZED, "Unauthorized", "" },
- { HTTP_NOT_FOUND, "Not Found",
- "The requested URL was not found on this server." },
- { HTTP_INTERNAL_SERVER_ERROR, "Internal Server Error"
- "Internal Server Error" },
- { HTTP_BAD_REQUEST, "Bad Request" ,
- "Unsupported method.\n" },
-#if 0
- { HTTP_CREATED, "Created" },
- { HTTP_ACCEPTED, "Accepted" },
- { HTTP_NO_CONTENT, "No Content" },
- { HTTP_MULTIPLE_CHOICES, "Multiple Choices" },
- { 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", "" },
+ { HTTP_OK, "OK", NULL },
+ { HTTP_MOVED_TEMPORARILY, "Found", "Directories must end with a slash." },
+ { HTTP_REQUEST_TIMEOUT, "Request Timeout",
+ "No request appeared within a reasonable time period." },
+ { HTTP_NOT_IMPLEMENTED, "Not Implemented",
+ "The requested method is not recognized by this server." },
+#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
+ { HTTP_UNAUTHORIZED, "Unauthorized", "" },
+#endif
+ { HTTP_NOT_FOUND, "Not Found",
+ "The requested URL was not found on this server." },
+ { HTTP_BAD_REQUEST, "Bad Request", "Unsupported method." },
+ { HTTP_FORBIDDEN, "Forbidden", "" },
+ { HTTP_INTERNAL_SERVER_ERROR, "Internal Server Error",
+ "Internal Server Error" },
+#if 0 /* not implemented */
+ { HTTP_CREATED, "Created" },
+ { HTTP_ACCEPTED, "Accepted" },
+ { HTTP_NO_CONTENT, "No Content" },
+ { HTTP_MULTIPLE_CHOICES, "Multiple Choices" },
+ { HTTP_MOVED_PERMANENTLY, "Moved Permanently" },
+ { HTTP_NOT_MODIFIED, "Not Modified" },
+ { HTTP_BAD_GATEWAY, "Bad Gateway", "" },
+ { HTTP_SERVICE_UNAVAILABLE, "Service Unavailable", "" },
#endif
};
+
+static const char RFC1123FMT[] = "%a, %d %b %Y %H:%M:%S GMT";
+
+
+#define STRNCASECMP(a, str) strncasecmp((a), (str), sizeof(str)-1)
+
+
+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 ENABLE_FEATURE_HTTPD_BASIC_AUTH || ENABLE_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;
+#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
+ Htaccess *prev, *cur;
+#elif ENABLE_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 ENABLE_FEATURE_HTTPD_BASIC_AUTH || ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES || ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
+ /* retain previous auth and mime config only for subdir parse */
+ if (flag != SUBDIR_PARSE) {
+#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
+ free_config_lines(&config->auth);
+#endif
+#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
+ free_config_lines(&config->mime_a);
+#endif
+#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
+ free_config_lines(&config->script_i);
+#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;
+ }
+
+#if ENABLE_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'
+#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
+ && *p0 != '/'
+#endif
+#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
+ && *p0 != '.'
+#endif
+#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
+ && *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;
+ }
+#if ENABLE_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 ENABLE_FEATURE_HTTPD_BASIC_AUTH || ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES || ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
+ /* 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;
+#if ENABLE_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
+#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
+ if (*cf == '*' && cf[1] == '.') {
+ /* config script interpreter line move top for overwrite previous */
+ cur->next = config->script_i;
+ config->script_i = cur;
+ continue;
+ }
+#endif
+#if ENABLE_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;
+ size_t 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);
+}
+
+#if ENABLE_FEATURE_HTTPD_ENCODE_URL_STR
/****************************************************************************
*
> $Function: encodeString()
****************************************************************************/
static char *encodeString(const char *string)
{
- /* 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 *p=out;
- char ch;
- if (!out) return "";
- while ((ch = *string++))
- {
- // very simple check for what to encode
- if (isalnum(ch)) *p++ = ch;
- else p += sprintf(p,"&#%d", (unsigned char) ch);
- }
- *p=0;
- return out;
+ /* take the simple route and encode everything */
+ /* could possibly scan once to get length. */
+ int len = strlen(string);
+ char *out = malloc(len * 6 + 1);
+ char *p = out;
+ char ch;
+
+ if (!out) return "";
+ while ((ch = *string++)) {
+ // very simple check for what to encode
+ if (isalnum(ch)) *p++ = ch;
+ else p += sprintf(p, "&#%d;", (unsigned char) ch);
+ }
+ *p = 0;
+ return out;
}
+#endif /* 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 *ptr = string;
- while (*ptr)
- {
- if (*ptr == '+') { *string++ = ' '; ptr++; }
- else if (*ptr != '%') *string++ = *ptr++;
- else
- {
- unsigned int value;
- sscanf(ptr+1,"%2X",&value);
- *string++ = value;
- ptr += 3;
- }
- }
- *string = '\0';
- return orig;
+ /* note that decoded string is always shorter than original */
+ char *string = orig;
+ char *ptr = string;
+
+ while (*ptr) {
+ if (*ptr == '+' && flag_plus_to_space) { *string++ = ' '; ptr++; }
+ else if (*ptr != '%') *string++ = *ptr++;
+ else {
+ unsigned int value1, value2;
+
+ ptr++;
+ if (sscanf(ptr, "%1X", &value1) != 1 ||
+ sscanf(ptr+1, "%1X", &value2) != 1) {
+ if (!flag_plus_to_space)
+ return NULL;
+ *string++ = '%';
+ } else {
+ value1 = value1 * 16 + value2;
+ if (value1 == '/' || value1 == 0)
+ return orig+1;
+ *string++ = value1;
+ ptr += 2;
+ }
+ }
+ }
+ *string = '\0';
+ return orig;
}
+#if ENABLE_FEATURE_HTTPD_CGI
/****************************************************************************
- *
- > $Function: addEnv()
- *
- * $Description: Add an enviornment variable setting to the global list.
- * A NAME=VALUE string is allocated, filled, and added to the list of
- * 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.
- *
- * $Return: (void)
- *
- * $Errors: Silently returns if the env runs out of space to hold the new item
- *
+ * setenv helpers
****************************************************************************/
-static void addEnv(const char *name, const char *value)
+static void setenv1(const char *name, 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;
- }
+ if (!value)
+ value = "";
+ setenv(name, value, 1);
}
-
-/****************************************************************************
- *
- > $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
- *
- * $Errors: None
- *
- ****************************************************************************/
-static void addEnvCgi(const char *pargs)
+static void setenv_long(const char *name, long value)
{
- char *args;
- if (pargs==0) return;
-
- /* args are a list of name=value&name2=value2 sequences */
- args = strdup(pargs);
- while (args && *args)
- {
- char *sep;
- char *name=args;
- char *value=strchr(args,'=');
- char *cginame;
- if (!value) break;
- *value++=0;
- sep=strchr(value,'&');
- if (sep)
- {
- *sep=0;
- args=sep+1;
- }
- else
- {
- sep = value + strlen(value);
- args = 0; /* no more */
- }
- cginame=(char*)malloc(strlen(decodeString(name))+5);
- if (!cginame) break;
- sprintf(cginame,"CGI_%s",name);
- addEnv(cginame,decodeString(value));
- free(cginame);
- }
+ char buf[sizeof(value)*3 + 1];
+ sprintf(buf, "%ld", value);
+ setenv(name, buf, 1);
}
+#endif
-#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
-static const unsigned char base64ToBin[] = {
- 255 /* ' ' */, 255 /* '!' */, 255 /* '"' */, 255 /* '#' */,
- 1 /* '$' */, 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' */
-};
-
+#if ENABLE_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;
- 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;
- 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 ((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;
-}
-#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);
-}
+ const unsigned char *in = (const unsigned char *)Data;
+ // The decoded size will be at most 3/4 the size of the encoded
+ unsigned long ch = 0;
+ int i = 0;
+ while (*in) {
+ int t = *in++;
-/****************************************************************************
- *
- > $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;
+ 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) {
+ *Data++ = (char) (ch >> 16);
+ *Data++ = (char) (ch >> 8);
+ *Data++ = (char) ch;
+ i = 0;
+ }
+ }
+ *Data = 0;
}
+#endif
+
/****************************************************************************
*
*
* $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) ;
- fd = socket(AF_INET, SOCK_STREAM, 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;
+ struct sockaddr_in lsocket;
+ int fd;
+ int on = 1;
+
+ /* 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(config->port);
+ fd = xsocket(AF_INET, SOCK_STREAM, 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. */
#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)
- {
- listen(fd, 9);
- signal(SIGCHLD, SIG_IGN); /* prevent zombie (defunct) processes */
- }
- else
- {
- perror("failure to bind to server port");
- shutdown(fd,0);
- close(fd);
- fd = -1;
- }
- }
- else
- {
- fprintf(stderr,"httpd: unable to create socket \n");
- }
- return fd;
-}
-
-static int sendBuf(int s, char *buf, int len)
-{
- if (len == -1) len = strlen(buf);
- return send(s, buf, len, 0);
+ xbind(fd, (struct sockaddr *)&lsocket, sizeof(lsocket));
+ xlisten(fd, 9);
+ signal(SIGCHLD, SIG_IGN); /* prevent zombie (defunct) processes */
+ return fd;
}
/****************************************************************************
* $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];
- 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;
- }
- if (infoString || !contentType)
- {
- contentType = "text/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);
- }
-
- if (responseNum == HTTP_UNAUTHORIZED)
- {
- sprintf(buf+strlen(buf),
- "WWW-Authenticate: Basic realm=\"%s\"\r\n", realm);
- }
- if (contentLength != -1)
- {
- int len = strlen(buf);
- sprintf(buf+len,"Content-length: %d\r\n", contentLength);
- }
- strcat(buf,"\r\n");
- if (infoString)
- {
- sprintf(buf+strlen(buf),
- "<HEAD><TITLE>%d %s</TITLE></HEAD>\n"
- "<BODY><H1>%d %s</H1>\n%s\n</BODY>\n",
- responseNum, responseString,
- responseNum, responseString,
- infoString);
- }
-#ifdef DEBUG
- if (debugHttpd) fprintf(stderr,"Headers:'%s'", buf);
+ char *buf = config->buf;
+ const char *responseString = "";
+ const char *infoString = 0;
+ const char *mime_type;
+ unsigned int i;
+ time_t timer = time(0);
+ char timeStr[80];
+ int len;
+ enum {
+ numNames = sizeof(httpResponseNames) / sizeof(httpResponseNames[0])
+ };
+
+ for (i = 0; i < numNames; i++) {
+ if (httpResponseNames[i].type == responseNum) {
+ responseString = httpResponseNames[i].name;
+ infoString = httpResponseNames[i].info;
+ break;
+ }
+ }
+ /* error message is HTML */
+ mime_type = responseNum == HTTP_OK ?
+ config->found_mime_type : "text/html";
+
+ /* emit the current date */
+ strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&timer));
+ len = sprintf(buf,
+ "HTTP/1.0 %d %s\r\nContent-type: %s\r\n"
+ "Date: %s\r\nConnection: close\r\n",
+ responseNum, responseString, mime_type, timeStr);
+
+#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
+ if (responseNum == HTTP_UNAUTHORIZED) {
+ len += sprintf(buf+len, "WWW-Authenticate: Basic realm=\"%s\"\r\n",
+ config->realm);
+ }
#endif
- sendBuf(s, buf,-1);
- return 0;
+ if (responseNum == HTTP_MOVED_TEMPORARILY) {
+ len += sprintf(buf+len, "Location: %s/%s%s\r\n",
+ config->found_moved_temporarily,
+ (config->query ? "?" : ""),
+ (config->query ? config->query : ""));
+ }
+
+ if (config->ContentLength != -1) { /* file */
+ strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&config->last_mod));
+ len += sprintf(buf+len, "Last-Modified: %s\r\n%s %"OFF_FMT"\r\n",
+ timeStr, "Content-length:", (off_t) config->ContentLength);
+ }
+ 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);
+ }
+ if (DEBUG)
+ fprintf(stderr, "headers: '%s'\n", buf);
+ return full_write(config->accepted_socket, 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)
- {
- if (buf[count] == '\r') continue;
- if (buf[count] == '\n')
- {
- buf[count] = 0;
- return count;
- }
- count++;
- }
- if (count) return count;
- else return -1;
+ int count = 0;
+ char *buf = config->buf;
+
+ while (read(config->accepted_socket, buf + count, 1) == 1) {
+ if (buf[count] == '\r') continue;
+ if (buf[count] == '\n') {
+ buf[count] = 0;
+ return count;
+ }
+ if (count < (MAX_MEMORY_BUFF-1)) /* check overflow */
+ count++;
+ }
+ if (count) return count;
+ else return -1;
}
+#if ENABLE_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 /).
+ * (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, 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;
- int outFd;
- int firstLine=1;
-
- do
- {
- if (pipe(fromCgi) != 0)
- {
- break;
- }
- if (pipe(toCgi) != 0)
- {
- break;
- }
-
- pid = fork();
- if (pid < 0)
- {
- pid = 0;
- break;;
- }
-
- if (!pid)
- {
- /* child process */
- char *script;
- char *directory;
- 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
- 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);
+ int fromCgi[2]; /* pipe for reading data from CGI */
+ int toCgi[2]; /* pipe for sending data to CGI */
+
+ static char * argp[] = { 0, 0 };
+ int pid = 0;
+ int inFd;
+ int outFd;
+ int firstLine = 1;
+ int status;
+ size_t post_readed_size, post_readed_idx;
+
+ if (pipe(fromCgi) != 0)
+ return 0;
+ if (pipe(toCgi) != 0)
+ return 0;
+
+ pid = fork();
+ if (pid < 0)
+ return 0;
- 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.
- */
- 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 */
- }
- }
- // 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");
+ if (!pid) {
+ /* child process */
+ char *script;
+ 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 (!DEBUG)
+ dup2(outFd, 2); // replace stderr with the pipe
+
+ close(toCgi[0]);
+ close(toCgi[1]);
+ close(fromCgi[0]);
+ close(fromCgi[1]);
+
+ close(config->accepted_socket);
+ close(config->server_socket);
+
+ /*
+ * Find PATH_INFO.
+ */
+ 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 '/' */
+ }
+ setenv1("PATH_INFO", script); /* set /PATH_INFO or "" */
+ /* setenv1("PATH", getenv("PATH")); redundant */
+ setenv1("REQUEST_METHOD", request);
+ if (config->query) {
+ char *uri = alloca(strlen(purl) + 2 + strlen(config->query));
+ if (uri)
+ sprintf(uri, "%s?%s", purl, config->query);
+ setenv1("REQUEST_URI", uri);
+ } else {
+ setenv1("REQUEST_URI", purl);
+ }
+ if (script != NULL)
+ *script = '\0'; /* cut off /PATH_INFO */
+ /* SCRIPT_FILENAME required by PHP in CGI mode */
+ if (!realpath(purl + 1, realpath_buff))
+ goto error_execing_cgi;
+ setenv1("SCRIPT_FILENAME", realpath_buff);
+ /* set SCRIPT_NAME as full path: /cgi-bin/dirs/script.cgi */
+ setenv1("SCRIPT_NAME", purl);
+ /* http://hoohoo.ncsa.uiuc.edu/cgi/env.html:
+ * QUERY_STRING: The information which follows the ? in the URL
+ * which referenced this script. This is the query information.
+ * It should not be decoded in any fashion. This variable
+ * should always be set when there is query information,
+ * regardless of command line decoding. */
+ /* (Older versions of bbox seemed to do some decoding) */
+ setenv1("QUERY_STRING", config->query);
+ setenv1("SERVER_SOFTWARE", httpdVersion);
+ putenv("SERVER_PROTOCOL=HTTP/1.0");
+ putenv("GATEWAY_INTERFACE=CGI/1.1");
+ setenv1("REMOTE_ADDR", config->rmt_ip_str);
+#if ENABLE_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
+ setenv_long("REMOTE_PORT", config->port);
#endif
- close(2);
- close(1);
- close(0);
- _exit(242);
- } /* end child */
-
- /* parent process */
- inFd=fromCgi[0];
- outFd=toCgi[1];
- close(fromCgi[1]);
- close(toCgi[0]);
- if (body) write(outFd, body, bodyLen);
- close(outFd);
-
- } while (0);
-
- if (pid)
- {
- int status;
- pid_t dead_pid;
-
- while (1)
- {
- struct timeval timeout;
- fd_set readSet;
- char buf[160];
- int nfound;
- int count;
-
- FD_ZERO(&readSet);
- FD_SET(inFd, &readSet);
-
- /* 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]);
-#ifdef DEBUG
- if (debugHttpd)
- {
- if (WIFEXITED(status))
- fprintf(stderr,"piped has exited with status=%d\n", WEXITSTATUS(status));
- if (WIFSIGNALED(status))
- fprintf(stderr,"piped has exited with signal=%d\n", WTERMSIG(status));
- }
-#endif
- pid = -1;
- break;
- }
- }
- else
- {
- // 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)
- {
- /* check to see if the user script added headers */
- if (strcmp(buf,"HTTP")!= 0)
- {
- write(s,"HTTP/1.0 200 OK\n", 16);
- }
- if (strstr(buf,"ontent-") == 0)
- {
- write(s,"Content-type: text/plain\n\n", 26);
- }
-
- firstLine=0;
- }
- write(s,buf,count);
-#ifdef DEBUG
- if (debugHttpd) fprintf(stderr,"cgi read %d bytes\n", count);
+ if (bodyLen)
+ setenv_long("CONTENT_LENGTH", bodyLen);
+ if (cookie)
+ setenv1("HTTP_COOKIE", cookie);
+ if (content_type)
+ setenv1("CONTENT_TYPE", content_type);
+#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
+ if (config->remoteuser) {
+ setenv1("REMOTE_USER", config->remoteuser);
+ putenv("AUTH_TYPE=Basic");
+ }
+#endif
+ if (config->referer)
+ setenv1("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 */
+ script = strrchr(realpath_buff, '/');
+ if (!script)
+ goto error_execing_cgi;
+ *script = '\0';
+ if (chdir(realpath_buff) == 0) {
+ // now run the program. If it fails,
+ // use _exit() so no destructors
+ // get called and make a mess.
+#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
+ char *interpr = NULL;
+ char *suffix = strrchr(purl, '.');
+
+ if (suffix) {
+ Htaccess *cur;
+ for (cur = config->script_i; cur; cur = cur->next) {
+ if (strcmp(cur->before_colon + 1, suffix) == 0) {
+ interpr = cur->after_colon;
+ break;
+ }
+ }
+ }
+#endif
+ *script = '/';
+#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
+ if (interpr)
+ execv(interpr, argp);
+ else
+#endif
+ execv(realpath_buff, argp);
+ }
+ error_execing_cgi:
+ /* send to stdout (even if we are not from inetd) */
+ config->accepted_socket = 1;
+ sendHeaders(HTTP_NOT_FOUND);
+ _exit(242);
+ } /* end child */
+
+ /* parent process */
+
+ post_readed_size = 0;
+ post_readed_idx = 0;
+ inFd = fromCgi[0];
+ outFd = toCgi[1];
+ close(fromCgi[1]);
+ close(toCgi[0]);
+ signal(SIGPIPE, SIG_IGN);
+
+ while (1) {
+ fd_set readSet;
+ 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(config->accepted_socket, &readSet);
+ if (nfound < config->accepted_socket)
+ nfound = config->accepted_socket;
+ }
+ /* Now wait on the set of sockets! */
+ 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);
+ if (DEBUG && WIFEXITED(status))
+ bb_error_msg("piped has exited with status=%d", WEXITSTATUS(status));
+ if (DEBUG && WIFSIGNALED(status))
+ bb_error_msg("piped has exited with signal=%d", WTERMSIG(status));
+ break;
+ }
+ } else if (post_readed_size > 0 && FD_ISSET(outFd, &writeSet)) {
+ count = 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 {
+ post_readed_size = post_readed_idx = bodyLen = 0; /* broken pipe to CGI */
+ }
+ } else if (bodyLen > 0 && post_readed_size == 0 && FD_ISSET(config->accepted_socket, &readSet)) {
+ count = bodyLen > (int)sizeof(wbuf) ? (int)sizeof(wbuf) : bodyLen;
+ count = safe_read(config->accepted_socket, wbuf, count);
+ if (count > 0) {
+ post_readed_size += count;
+ bodyLen -= count;
+ } else {
+ bodyLen = 0; /* closed */
+ }
+ }
+ if (FD_ISSET(inFd, &readSet)) {
+ int s = config->accepted_socket;
+ char *rbuf = config->buf;
+
+#ifndef PIPE_BUF
+# define PIPESIZE 4096 /* amount of buffering in a pipe */
+#else
+# define PIPESIZE PIPE_BUF
+#endif
+#if PIPESIZE >= MAX_MEMORY_BUFF
+# error "PIPESIZE >= MAX_MEMORY_BUFF"
#endif
+
+ /* There is something to read */
+ count = safe_read(inFd, rbuf, PIPESIZE);
+ if (count == 0)
+ break; /* closed */
+ if (count > 0) {
+ if (firstLine) {
+ rbuf[count] = 0;
+ /* check to see if the user script added headers */
+ if (strncmp(rbuf, "HTTP/1.0 200 OK\r\n", 4) != 0) {
+ full_write(s, "HTTP/1.0 200 OK\r\n", 17);
+ }
+ /* Sometimes CGI is writing to pipe in small chunks
+ * and we don't see Content-type (because the read
+ * is too short) and we emit bogus "text/plain"!
+ * Is it a bug or CGI *has to* write it in one piece? */
+ if (strstr(rbuf, "ontent-") == 0) {
+ full_write(s, "Content-type: text/plain\r\n\r\n", 28);
+ }
+ firstLine = 0;
+ }
+ if (full_write(s, rbuf, count) != count)
+ break;
+
+ if (DEBUG)
+ fprintf(stderr, "cgi read %d bytes: '%.*s'\n", count, count, rbuf);
+ }
+ }
}
- }
- }
- }
- return 0;
+ return 0;
}
+#endif /* FEATURE_HTTPD_CGI */
/****************************************************************************
*
> $Function: sendFile()
*
- * $Description: Send a file response to an HTTP request
+ * $Description: Send a file response to a 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";
- int f;
-
- if (suffix)
- {
- const char ** table;
- for (table = (const char **) &suffixTable[0];
- *table && (strstr(*table, suffix) == 0); table+=2);
- if (table) content = *(table+1);
- }
-
- if (*url == '/') url++;
- suffix = strchr(url,'?');
- if (suffix) *suffix = 0;
-
-#ifdef DEBUG
- fprintf(stderr,"Sending file '%s'\n", url);
-#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
- {
-#ifdef DEBUG
- fprintf(stderr,"Unable to open '%s'\n", url);
-#endif
- sendHeaders(s, HTTP_NOT_FOUND, "text/html", -1, 0);
- }
-
- return 0;
+ char * suffix;
+ int f;
+ const char * const * table;
+ const char * try_suffix;
+
+ 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];
+#if ENABLE_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;
+ }
+ }
+ }
+#endif /* FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES */
+
+ if (DEBUG)
+ fprintf(stderr, "sending file '%s' content-type: %s\n",
+ url, config->found_mime_type);
+
+ f = open(url, O_RDONLY);
+ if (f >= 0) {
+ int count;
+ char *buf = config->buf;
+
+ sendHeaders(HTTP_OK);
+ /* TODO: sendfile() */
+ while ((count = full_read(f, buf, MAX_MEMORY_BUFF)) > 0) {
+ if (full_write(config->accepted_socket, buf, count) != count)
+ break;
+ }
+ close(f);
+ } else {
+ if (DEBUG)
+ bb_perror_msg("cannot open '%s'", url);
+ 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) {
+ if (DEBUG)
+ fprintf(stderr, "checkPermIP: '%s' ? ", config->rmt_ip_str);
+ if (DEBUG)
+ 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);
+ if ((config->rmt_ip & cur->mask) == cur->ip)
+ return cur->allow_deny == 'A'; /* Allow/Deny */
+ }
+
+ /* if unconfigured, return 1 - access from all */
+ return !config->flg_deny_all;
}
/****************************************************************************
*
> $Function: checkPerm()
*
- * $Description: Check the permission file for access.
- *
- * 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.
+ * $Description: Check the permission file for access password protected.
*
- * 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.
*
****************************************************************************/
+
+#if ENABLE_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;
-
- rval=0;
-
- /* 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;
-#ifdef DEBUG
- fprintf(stderr,"checkPerm: '%s' ? '%s'\n",buf,path);
-#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;
- }
-
- /* reject on first failure for non ipaddresses */
- if (!ipaddr) break;
- }
- };
- fclose(f);
- return(rval);
-};
+ Htaccess * cur;
+ const char *p;
+ const char *p0;
+ const char *prev = NULL;
+
+ /* This could stand some work */
+ for (cur = config->auth; cur; cur = cur->next) {
+ size_t l;
+
+ p0 = cur->before_colon;
+ if (prev != NULL && strcmp(prev, p0) != 0)
+ continue; /* find next identical */
+ p = cur->after_colon;
+ if (DEBUG)
+ fprintf(stderr, "checkPerm: '%s' ? '%s'\n", p0, request);
+
+ l = strlen(p0);
+ 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;
+ }
+
+ if (ENABLE_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;
+ }
+ }
+
+ if (strcmp(p, request) == 0) {
+set_remoteuser_var:
+ config->remoteuser = strdup(request);
+ if (config->remoteuser)
+ config->remoteuser[(u - request)] = 0;
+ return 1; /* Ok */
+ }
+ /* unauthorized */
+ }
+ } /* for */
+
+ return prev == NULL;
+}
+
+#endif /* FEATURE_HTTPD_BASIC_AUTH */
/****************************************************************************
*
- > $Function: handleIncoming()
+ > $Function: handle_sigalrm()
*
- * $Description: Handle an incoming http request.
+ * $Description: Handle timeouts
*
- * $Parameters:
- * (s) s . . . . . The http request socket.
+ ****************************************************************************/
+
+static void handle_sigalrm(int sig)
+{
+ sendHeaders(HTTP_REQUEST_TIMEOUT);
+ config->alarm_signaled = sig;
+}
+
+/****************************************************************************
+ *
+ > $Function: handleIncoming()
*
- * $Return: (int) . . . Always 0.
+ * $Description: Handle an incoming http request.
*
****************************************************************************/
-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 *urlArgs;
- char *body=0;
-
- 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);
+ char *buf = config->buf;
+ char *url;
+ char *purl;
+ int blank = -1;
+ char *test;
+ struct stat sb;
+ int ip_allowed;
+#if ENABLE_FEATURE_HTTPD_CGI
+ const char *prequest = request_GET;
+ unsigned long length = 0;
+ char *cookie = 0;
+ char *content_type = 0;
+#endif
+ fd_set s_fd;
+ struct timeval tv;
+ int retval;
+ struct sigaction sa;
+
+#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
+ int credentials = -1; /* if not required this is Ok */
#endif
- break;
- }
-
- /* If no version info, assume 0.9 */
- if (count != 4)
- {
- major = 0;
- minor = 9;
- }
-
- /* extract url args if present */
- urlArgs = strchr(url,'?');
- if (urlArgs)
- {
- *urlArgs=0;
- urlArgs++;
- }
-
-#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;
- }
-#ifdef DEBUG
- if (debugHttpd) fprintf(stderr,"Header: '%s'\n", buf);
-#endif
-
- /* try and do our best to parse more lines */
- if ((strncmpi(buf, "Content-length:", 15) == 0))
- {
- sscanf(buf, "%*s %ld", &length);
- }
-#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
- else if (strncmpi(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) );
-
- }
- }
- if (!checkPerm(url, credentials))
- {
- sendHeaders(s, HTTP_UNAUTHORIZED, 0, -1, 0);
- length=-1;
- break; /* no more processing */
- }
+
+ sa.sa_handler = handle_sigalrm;
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = 0; /* no SA_RESTART */
+ sigaction(SIGALRM, &sa, NULL);
+
+ do {
+ int count;
+
+ (void) alarm(TIMEOUT);
+ if (getLine() <= 0)
+ break; /* closed */
+
+ purl = strpbrk(buf, " \t");
+ if (purl == NULL) {
+ BAD_REQUEST:
+ sendHeaders(HTTP_BAD_REQUEST);
+ break;
+ }
+ *purl = '\0';
+#if ENABLE_FEATURE_HTTPD_CGI
+ if (strcasecmp(buf, prequest) != 0) {
+ prequest = "POST";
+ if (strcasecmp(buf, prequest) != 0) {
+ sendHeaders(HTTP_NOT_IMPLEMENTED);
+ break;
+ }
+ }
#else
- }
-#endif /* CONFIG_FEATURE_HTTPD_BASIC_AUTH */
-
- /* we are done if an error occurred */
- if (length == -1) break;
-
- 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);
- }
- else if (strncmpi(request,"GET",3) == 0)
- {
- sendFile(s, url);
- }
- else
- {
- sendHeaders(s, HTTP_NOT_IMPLEMENTED, 0, -1, 0);
- }
- } 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;
+ if (strcasecmp(buf, request_GET) != 0) {
+ sendHeaders(HTTP_NOT_IMPLEMENTED);
+ break;
+ }
+#endif
+ *purl = ' ';
+ count = sscanf(purl, " %[^ ] HTTP/%d.%*d", buf, &blank);
+
+ if (count < 1 || buf[0] != '/') {
+ /* Garbled request/URL */
+ goto BAD_REQUEST;
+ }
+ url = alloca(strlen(buf) + sizeof("/index.html"));
+ if (url == NULL) {
+ sendHeaders(HTTP_INTERNAL_SERVER_ERROR);
+ break;
+ }
+ strcpy(url, buf);
+ /* extract url args if present */
+ test = strchr(url, '?');
+ config->query = NULL;
+ if (test) {
+ *test++ = '\0';
+ config->query = test;
+ }
+
+ test = decodeString(url, 0);
+ if (test == NULL)
+ goto BAD_REQUEST;
+ /* FIXME: bug? should be "url+1"? */
+ if (test == (buf+1)) {
+ sendHeaders(HTTP_NOT_FOUND);
+ break;
+ }
+
+ /* 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 == '/') {
+ /* skip duplicate (or initial) slash */
+ if (*test == '/') {
+ continue;
+ }
+ if (*test == '.') {
+ /* skip extra '.' */
+ if (test[1] == '/' || test[1] == 0) {
+ continue;
+ } else
+ /* '..': be careful */
+ 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)) {
+ config->found_moved_temporarily = url;
+ }
+ }
+ if (DEBUG)
+ fprintf(stderr, "url='%s', args=%s\n", url, config->query);
+
+ 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 = '/';
+ }
+ if (blank >= 0) {
+ /* read until blank line for HTTP version specified, else parse immediate */
+ while (1) {
+ alarm(TIMEOUT);
+ count = getLine();
+ if (count <= 0)
+ break;
+
+ if (DEBUG)
+ fprintf(stderr, "header: '%s'\n", buf);
+
+#if ENABLE_FEATURE_HTTPD_CGI
+ /* try and do our best to parse more lines */
+ if ((STRNCASECMP(buf, "Content-length:") == 0)) {
+ /* extra read only for POST */
+ if (prequest != request_GET) {
+ test = buf + sizeof("Content-length:")-1;
+ if (!test[0]) goto bail_out;
+ errno = 0;
+ /* not using strtoul: it ignores leading munis! */
+ length = strtol(test, &test, 10);
+ /* length is "ulong", but we need to pass it to int later */
+ /* so we check for negative or too large values in one go: */
+ /* (long -> ulong conv caused negatives to be seen as > INT_MAX) */
+ if (test[0] || errno || length > INT_MAX)
+ goto bail_out;
+ }
+ } else if ((STRNCASECMP(buf, "Cookie:") == 0)) {
+ cookie = strdup(skip_whitespace(buf + sizeof("Cookie:")-1));
+ } else if ((STRNCASECMP(buf, "Content-Type:") == 0)) {
+ content_type = strdup(skip_whitespace(buf + sizeof("Content-Type:")-1));
+ } else if ((STRNCASECMP(buf, "Referer:") == 0)) {
+ config->referer = strdup(skip_whitespace(buf + sizeof("Referer:")-1));
+ }
+#endif
+
+#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
+ if (STRNCASECMP(buf, "Authorization:") == 0) {
+ /* We only allow Basic credentials.
+ * It shows up as "Authorization: Basic <userid:password>" where
+ * the userid:password is base64 encoded.
+ */
+ test = skip_whitespace(buf + sizeof("Authorization:")-1);
+ if (STRNCASECMP(test, "Basic") != 0)
+ continue;
+ test += sizeof("Basic")-1;
+ /* decodeBase64() skips whitespace itself */
+ decodeBase64(test);
+ credentials = checkPerm(url, test);
+ }
+#endif /* FEATURE_HTTPD_BASIC_AUTH */
+
+ } /* while extra header reading */
+ }
+ alarm(0);
+ if (config->alarm_signaled)
+ break;
+
+ if (strcmp(strrchr(url, '/') + 1, httpd_conf) == 0 || ip_allowed == 0) {
+ /* protect listing [/path]/httpd_conf or IP deny */
+#if ENABLE_FEATURE_HTTPD_CGI
+ FORBIDDEN: /* protect listing /cgi-bin */
+#endif
+ sendHeaders(HTTP_FORBIDDEN);
+ break;
+ }
+
+#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
+ if (credentials <= 0 && checkPerm(url, ":") == 0) {
+ sendHeaders(HTTP_UNAUTHORIZED);
+ break;
+ }
+#endif
+
+ if (config->found_moved_temporarily) {
+ sendHeaders(HTTP_MOVED_TEMPORARILY);
+ /* clear unforked memory flag */
+ config->found_moved_temporarily = NULL;
+ break;
+ }
+
+ test = url + 1; /* skip first '/' */
+
+#if ENABLE_FEATURE_HTTPD_CGI
+ if (strncmp(test, "cgi-bin", 7) == 0) {
+ if (test[7] == '/' && test[8] == 0)
+ goto FORBIDDEN; /* protect listing cgi-bin/ */
+ sendCgi(url, prequest, length, cookie, content_type);
+ break;
+ }
+ if (prequest != request_GET) {
+ sendHeaders(HTTP_NOT_IMPLEMENTED);
+ break;
+ }
+#endif /* FEATURE_HTTPD_CGI */
+ if (purl[-1] == '/')
+ strcpy(purl, "index.html");
+ if (stat(test, &sb) == 0) {
+ /* It's a dir URL and there is index.html */
+ config->ContentLength = sb.st_size;
+ config->last_mod = sb.st_mtime;
+ }
+#if ENABLE_FEATURE_HTTPD_CGI
+ else if (purl[-1] == '/') {
+ /* It's a dir URL and there is no index.html
+ * Try cgi-bin/index.cgi */
+ if (access("/cgi-bin/index.cgi"+1, X_OK) == 0) {
+ purl[0] = '\0';
+ config->query = url;
+ sendCgi("/cgi-bin/index.cgi", prequest, length, cookie, content_type);
+ break;
+ }
+ }
+#endif /* FEATURE_HTTPD_CGI */
+ sendFile(test);
+ config->ContentLength = -1;
+ } while (0);
+
+ bail_out:
+
+ if (DEBUG)
+ fprintf(stderr, "closing socket\n\n");
+#if ENABLE_FEATURE_HTTPD_CGI
+ free(cookie);
+ free(content_type);
+ free(config->referer);
+ config->referer = NULL;
+# if ENABLE_FEATURE_HTTPD_BASIC_AUTH
+ free(config->remoteuser);
+ config->remoteuser = NULL;
+# endif
+#endif
+ shutdown(config->accepted_socket, SHUT_WR);
+
+ /* Properly wait for remote to closed */
+ FD_ZERO(&s_fd);
+ FD_SET(config->accepted_socket, &s_fd);
+
+ do {
+ tv.tv_sec = 2;
+ tv.tv_usec = 0;
+ retval = select(config->accepted_socket + 1, &s_fd, NULL, NULL, &tv);
+ } while (retval > 0 && read(config->accepted_socket, buf, sizeof(config->buf) > 0));
+
+ shutdown(config->accepted_socket, SHUT_RD);
+ /* In inetd case, we close fd 1 (stdout) here. We will exit soon anyway */
+ close(config->accepted_socket);
}
/****************************************************************************
****************************************************************************/
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 ;
-
- /* 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;
- 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;
- }
- 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));
-#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;
- }
-
- /* set the KEEPALIVE option to cull dead connections */
- on = 1;
- setsockopt(s, SOL_SOCKET, SO_KEEPALIVE, (char *) &on,
- sizeof (on));
+ fd_set readfd, portfd;
- if (fork() == 0)
- {
- /* This is the spawned thread */
- handleIncoming(s);
- exit(0);
- }
- close(s);
- }
- }
- } // while (1)
- return 0;
+ FD_ZERO(&portfd);
+ FD_SET(server, &portfd);
+
+ /* copy the ports we are watching to the readfd set */
+ while (1) {
+ int on, s;
+ socklen_t fromAddrLen;
+ struct sockaddr_in fromAddr;
+
+ /* Now wait INDEFINITELY on the set of sockets! */
+ readfd = portfd;
+ if (select(server + 1, &readfd, 0, 0, 0) <= 0)
+ continue;
+ if (!FD_ISSET(server, &readfd))
+ continue;
+ fromAddrLen = sizeof(fromAddr);
+ s = accept(server, (struct sockaddr *)&fromAddr, &fromAddrLen);
+ if (s < 0)
+ continue;
+ config->accepted_socket = s;
+ config->rmt_ip = ntohl(fromAddr.sin_addr.s_addr);
+#if ENABLE_FEATURE_HTTPD_CGI || 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);
+#if DEBUG
+ bb_error_msg("connection from IP=%s, port %u",
+ config->rmt_ip_str, config->port);
+#endif
+#endif /* FEATURE_HTTPD_CGI */
+
+ /* set the KEEPALIVE option to cull dead connections */
+ on = 1;
+ setsockopt(s, SOL_SOCKET, SO_KEEPALIVE, (void *)&on, sizeof(on));
+
+ if (DEBUG || fork() == 0) {
+ /* child */
+#if ENABLE_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
+ /* protect reload config, may be confuse checking */
+ signal(SIGHUP, SIG_IGN);
+#endif
+ handleIncoming();
+ if (!DEBUG)
+ exit(0);
+ }
+ close(s);
+ } /* while (1) */
+ return 0;
}
-int httpd_main(int argc, char *argv[])
+/* from inetd */
+static int miniHttpd_inetd(void)
{
- int server;
- int port = 80;
- int c;
-
- /* check if user supplied a port number */
- for (;;) {
- c = getopt( argc, argv, "p:ve:d:"
-#ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
- "r:c:"
+ 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 ENABLE_FEATURE_HTTPD_CGI
+ 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
- );
- if (c == EOF) break;
- switch (c) {
- case 'v':
- debugHttpd=1;
- break;
- case 'p':
- port = atoi(optarg);
- break;
- case 'd':
- printf("%s",decodeString(optarg));
- return 0;
- case 'e':
- printf("%s",encodeString(optarg));
- return 0;
- case 'r':
- realm = optarg;
- break;
- case 'c':
- configFile = optarg;
- break;
- default:
- fprintf(stderr,"%s\n", httpdVersion);
- show_usage();
- exit(1);
- }
- }
-
- envp = (char**) malloc((ENVSIZE+1)*sizeof(char*));
- if (envp == 0) perror_exit("envp alloc");
-
- server = openServer(port);
- if (server < 0) exit(1);
-
- 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);
- }
-
- miniHttpd(server);
-
- return 0;
+ config->port = ntohs(fromAddrLen.sin_port);
+ handleIncoming();
+ return 0;
}
-#ifdef HTTPD_STANDALONE
-int main(int argc, char *argv[])
-{
- return httpd_main(argc, argv);
+#if ENABLE_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
+
+enum {
+ c_opt_config_file = 0,
+ d_opt_decode_url,
+ h_opt_home_httpd,
+ USE_FEATURE_HTTPD_ENCODE_URL_STR(e_opt_encode_url,)
+ USE_FEATURE_HTTPD_BASIC_AUTH( r_opt_realm ,)
+ USE_FEATURE_HTTPD_AUTH_MD5( m_opt_md5 ,)
+ USE_FEATURE_HTTPD_SETUID( u_opt_setuid ,)
+ p_opt_port ,
+ p_opt_inetd ,
+ p_opt_foreground,
+ OPT_CONFIG_FILE = 1 << c_opt_config_file,
+ OPT_DECODE_URL = 1 << d_opt_decode_url,
+ OPT_HOME_HTTPD = 1 << h_opt_home_httpd,
+ OPT_ENCODE_URL = USE_FEATURE_HTTPD_ENCODE_URL_STR((1 << e_opt_encode_url)) + 0,
+ OPT_REALM = USE_FEATURE_HTTPD_BASIC_AUTH( (1 << r_opt_realm )) + 0,
+ OPT_MD5 = USE_FEATURE_HTTPD_AUTH_MD5( (1 << m_opt_md5 )) + 0,
+ OPT_SETUID = USE_FEATURE_HTTPD_SETUID( (1 << u_opt_setuid )) + 0,
+ OPT_PORT = 1 << p_opt_port,
+ OPT_INETD = 1 << p_opt_inetd,
+ OPT_FOREGROUND = 1 << p_opt_foreground,
+};
+
+static const char httpd_opts[] = "c:d:h:"
+ USE_FEATURE_HTTPD_ENCODE_URL_STR("e:")
+ USE_FEATURE_HTTPD_BASIC_AUTH("r:")
+ USE_FEATURE_HTTPD_AUTH_MD5("m:")
+ USE_FEATURE_HTTPD_SETUID("u:")
+ "p:if";
+
+
+int httpd_main(int argc, char *argv[])
+{
+ unsigned opt;
+ const char *home_httpd = home;
+ char *url_for_decode;
+ USE_FEATURE_HTTPD_ENCODE_URL_STR(const char *url_for_encode;)
+ const char *s_port;
+ USE_FEATURE_HTTPD_SETUID(const char *s_ugid = NULL;)
+ USE_FEATURE_HTTPD_SETUID(struct bb_uidgid_t ugid;)
+ USE_FEATURE_HTTPD_AUTH_MD5(const char *pass;)
+
+#if ENABLE_LOCALE_SUPPORT
+ /* Undo busybox.c: we want to speak English in http (dates etc) */
+ setlocale(LC_TIME, "C");
+#endif
+ config = xzalloc(sizeof(*config));
+#if ENABLE_FEATURE_HTTPD_BASIC_AUTH
+ config->realm = "Web Server Authentication";
#endif
+ config->port = 80;
+ config->ContentLength = -1;
+
+ opt = getopt32(argc, argv, httpd_opts,
+ &(config->configFile), &url_for_decode, &home_httpd
+ USE_FEATURE_HTTPD_ENCODE_URL_STR(, &url_for_encode)
+ USE_FEATURE_HTTPD_BASIC_AUTH(, &(config->realm))
+ USE_FEATURE_HTTPD_AUTH_MD5(, &pass)
+ USE_FEATURE_HTTPD_SETUID(, &s_ugid)
+ , &s_port
+ );
+ if (opt & OPT_DECODE_URL) {
+ printf("%s", decodeString(url_for_decode, 1));
+ return 0;
+ }
+#if ENABLE_FEATURE_HTTPD_ENCODE_URL_STR
+ if (opt & OPT_ENCODE_URL) {
+ printf("%s", encodeString(url_for_encode));
+ return 0;
+ }
+#endif
+#if ENABLE_FEATURE_HTTPD_AUTH_MD5
+ if (opt & OPT_MD5) {
+ puts(pw_encrypt(pass, "$1$"));
+ return 0;
+ }
+#endif
+ if (opt & OPT_PORT)
+ config->port = xatou16(s_port);
+
+#if ENABLE_FEATURE_HTTPD_SETUID
+ if (opt & OPT_SETUID) {
+ char *e;
+ // FIXME: what the default group should be?
+ ugid.gid = -1;
+ ugid.uid = strtoul(s_ugid, &e, 0);
+ if (*e == ':') {
+ e++;
+ ugid.gid = strtoul(e, &e, 0);
+ }
+ if (*e != '\0') {
+ /* not integer */
+ if (!uidgid_get(&ugid, s_ugid))
+ bb_error_msg_and_die("unrecognized user[:group] "
+ "name '%s'", s_ugid);
+ }
+ }
+#endif
+
+ xchdir(home_httpd);
+ if (!(opt & OPT_INETD)) {
+ config->server_socket = openServer();
+#if ENABLE_FEATURE_HTTPD_SETUID
+ /* drop privileges */
+ if (opt & OPT_SETUID) {
+ if (ugid.gid != (gid_t)-1) {
+ if (setgroups(1, &ugid.gid) == -1)
+ bb_perror_msg_and_die("setgroups");
+ xsetgid(ugid.gid);
+ }
+ xsetuid(ugid.uid);
+ }
+#endif
+ }
+
+#if ENABLE_FEATURE_HTTPD_CGI
+ {
+ char *p = getenv("PATH");
+ if (p) {
+ p = xstrdup(p);
+ }
+ clearenv();
+ if (p)
+ setenv1("PATH", p);
+ if (!(opt & OPT_INETD))
+ setenv_long("SERVER_PORT", config->port);
+ }
+#endif
+
+#if ENABLE_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
+ sighup_handler(0);
+#else
+ parse_conf(default_path_httpd_conf, FIRST_PARSE);
+#endif
+
+ if (opt & OPT_INETD)
+ return miniHttpd_inetd();
+
+ if (!(opt & OPT_FOREGROUND))
+ xdaemon(1, 0); /* don't change current directory */
+ return miniHttpd(config->server_socket);
+}