1 /* vi: set sw=4 ts=4: */
3 * httpd implementation for busybox
5 * Copyright (C) 2002,2003 Glenn Engel <glenne@engel.org>
6 * Copyright (C) 2003-2006 Vladimir Oleynik <dzo@simtreas.ru>
8 * simplify patch stolen from libbb without using strdup
10 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
12 *****************************************************************************
16 * httpd -p 8080 -h $HOME/public_html
17 * or for daemon start from rc script with uid=0:
19 * This is equivalent if www user have uid=80 to
20 * httpd -p 80 -u 80 -h /www -c /etc/httpd.conf -r "Web Server Authentication"
23 * When a url contains "cgi-bin" it is assumed to be a cgi script. The
24 * server changes directory to the location of the script and executes it
25 * after setting QUERY_STRING and other environment variables.
27 * The server can also be invoked as a url arg decoder and html text encoder
29 * foo=`httpd -d $foo` # decode "Hello%20World" as "Hello World"
30 * bar=`httpd -e "<Hello World>"` # encode as "<Hello World>"
31 * Note that url encoding for arguments is not the same as html encoding for
32 * presentation. -d decodes a url-encoded argument while -e encodes in html
35 * httpd.conf has the following format:
37 * A:172.20. # Allow address from 172.20.0.0/16
38 * A:10.0.0.0/25 # Allow any address from 10.0.0.0-10.0.0.127
39 * A:10.0.0.0/255.255.255.128 # Allow any address that previous set
40 * A:127.0.0.1 # Allow local loopback connections
41 * D:* # Deny from other IP connections
42 * /cgi-bin:foo:bar # Require user foo, pwd bar on urls starting with /cgi-bin/
43 * /adm:admin:setup # Require user admin, pwd setup on urls starting with /adm/
44 * /adm:toor:PaSsWd # or user toor, pwd PaSsWd on urls starting with /adm/
45 * .au:audio/basic # additional mime type for audio.au files
46 * *.php:/path/php # running cgi.php scripts through an interpreter
48 * A/D may be as a/d or allow/deny - first char case insensitive
49 * Deny IP rules take precedence over allow rules.
52 * The Deny/Allow IP logic:
54 * - Default is to allow all. No addresses are denied unless
55 * denied with a D: rule.
56 * - Order of Deny/Allow rules is significant
57 * - Deny rules take precedence over allow rules.
58 * - If a deny all rule (D:*) is used it acts as a catch-all for unmatched
60 * - Specification of Allow all (A:*) is a no-op
63 * 1. Allow only specified addresses
64 * A:172.20 # Allow any address that begins with 172.20.
65 * A:10.10. # Allow any address that begins with 10.10.
66 * A:127.0.0.1 # Allow local loopback connections
67 * D:* # Deny from other IP connections
69 * 2. Only deny specified addresses
70 * D:1.2.3. # deny from 1.2.3.0 - 1.2.3.255
71 * D:2.3.4. # deny from 2.3.4.0 - 2.3.4.255
72 * A:* # (optional line added for clarity)
74 * If a sub directory contains a config file it is parsed and merged with
75 * any existing settings as if it was appended to the original configuration.
77 * subdir paths are relative to the containing subdir and thus cannot
78 * affect the parent rules.
80 * Note that since the sub dir is parsed in the forked thread servicing the
81 * subdir http request, any merge is discarded when the process exits. As a
82 * result, the subdir settings only have a lifetime of a single request.
85 * If -c is not set, an attempt will be made to open the default
86 * root configuration file. If -c is set and the file is not found, the
87 * server exits with an error.
95 static const char httpdVersion[] = "busybox httpd/1.35 6-Oct-2004";
96 static const char default_path_httpd_conf[] = "/etc";
97 static const char httpd_conf[] = "httpd.conf";
98 static const char home[] = "./";
101 # define cont_l_fmt "%lld"
102 # define cont_l_type (long long)
104 # define cont_l_fmt "%ld"
105 # define cont_l_type (long)
110 // Note: busybox xfuncs are not used because we want the server to keep running
111 // if something bad happens due to a malformed user request.
112 // As a result, all memory allocation after daemonize
113 // is checked rigorously
121 #define MAX_MEMORY_BUFF 8192 /* IO buffer */
123 typedef struct HT_ACCESS {
125 struct HT_ACCESS *next;
126 char before_colon[1]; /* really bigger, must last */
129 typedef struct HT_ACCESS_IP {
133 struct HT_ACCESS_IP *next;
137 char buf[MAX_MEMORY_BUFF];
139 USE_FEATURE_HTTPD_BASIC_AUTH(const char *realm;)
140 USE_FEATURE_HTTPD_BASIC_AUTH(char *remoteuser;)
144 USE_FEATURE_HTTPD_CGI(char *referer;)
146 const char *configFile;
149 #if defined(CONFIG_FEATURE_HTTPD_CGI) || DEBUG
150 char rmt_ip_str[16]; /* for set env REMOTE_ADDR */
152 unsigned port; /* server initial port and for
153 set env REMOTE_PORT */
155 const char *found_mime_type;
156 const char *found_moved_temporarily;
159 off_t ContentLength; /* -1 - unknown */
162 Htaccess_IP *ip_a_d; /* config allow/deny lines */
164 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
165 Htaccess *auth; /* config user:password lines */
167 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
168 Htaccess *mime_a; /* config mime types */
171 #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
173 # define a_c_r config->accepted_socket
174 # define a_c_w config->accepted_socket
179 volatile int alarm_signaled;
181 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
182 Htaccess *script_i; /* config script interpreters */
186 static HttpdConfig *config;
188 static const char request_GET[] = "GET"; /* size algorithmic optimize */
190 static const char* const suffixTable [] = {
191 /* Warning: shorted equivalent suffix in one line must be first */
192 ".htm.html", "text/html",
193 ".jpg.jpeg", "image/jpeg",
196 ".txt.h.c.cc.cpp", "text/plain",
199 ".avi", "video/x-msvideo",
200 ".qt.mov", "video/quicktime",
201 ".mpe.mpeg", "video/mpeg",
202 ".mid.midi", "audio/midi",
203 ".mp3", "audio/mpeg",
204 #if 0 /* unpopular */
205 ".au", "audio/basic",
206 ".pac", "application/x-ns-proxy-autoconfig",
207 ".vrml.wrl", "model/vrml",
209 0, "application/octet-stream" /* default */
215 HTTP_MOVED_TEMPORARILY = 302,
216 HTTP_BAD_REQUEST = 400, /* malformed syntax */
217 HTTP_UNAUTHORIZED = 401, /* authentication needed, respond with auth hdr */
218 HTTP_NOT_FOUND = 404,
219 HTTP_FORBIDDEN = 403,
220 HTTP_REQUEST_TIMEOUT = 408,
221 HTTP_NOT_IMPLEMENTED = 501, /* used for unrecognized requests */
222 HTTP_INTERNAL_SERVER_ERROR = 500,
223 #if 0 /* future use */
225 HTTP_SWITCHING_PROTOCOLS = 101,
228 HTTP_NON_AUTHORITATIVE_INFO = 203,
229 HTTP_NO_CONTENT = 204,
230 HTTP_MULTIPLE_CHOICES = 300,
231 HTTP_MOVED_PERMANENTLY = 301,
232 HTTP_NOT_MODIFIED = 304,
233 HTTP_PAYMENT_REQUIRED = 402,
234 HTTP_BAD_GATEWAY = 502,
235 HTTP_SERVICE_UNAVAILABLE = 503, /* overload, maintenance */
236 HTTP_RESPONSE_SETSIZE = 0xffffffff
242 HttpResponseNum type;
247 static const HttpEnumString httpResponseNames[] = {
248 { HTTP_OK, "OK", NULL },
249 { HTTP_MOVED_TEMPORARILY, "Found", "Directories must end with a slash." },
250 { HTTP_REQUEST_TIMEOUT, "Request Timeout",
251 "No request appeared within a reasonable time period." },
252 { HTTP_NOT_IMPLEMENTED, "Not Implemented",
253 "The requested method is not recognized by this server." },
254 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
255 { HTTP_UNAUTHORIZED, "Unauthorized", "" },
257 { HTTP_NOT_FOUND, "Not Found",
258 "The requested URL was not found on this server." },
259 { HTTP_BAD_REQUEST, "Bad Request", "Unsupported method." },
260 { HTTP_FORBIDDEN, "Forbidden", "" },
261 { HTTP_INTERNAL_SERVER_ERROR, "Internal Server Error",
262 "Internal Server Error" },
263 #if 0 /* not implemented */
264 { HTTP_CREATED, "Created" },
265 { HTTP_ACCEPTED, "Accepted" },
266 { HTTP_NO_CONTENT, "No Content" },
267 { HTTP_MULTIPLE_CHOICES, "Multiple Choices" },
268 { HTTP_MOVED_PERMANENTLY, "Moved Permanently" },
269 { HTTP_NOT_MODIFIED, "Not Modified" },
270 { HTTP_BAD_GATEWAY, "Bad Gateway", "" },
271 { HTTP_SERVICE_UNAVAILABLE, "Service Unavailable", "" },
276 static const char RFC1123FMT[] = "%a, %d %b %Y %H:%M:%S GMT";
277 static const char Content_length[] = "Content-length:";
281 scan_ip (const char **ep, unsigned int *ip, unsigned char endc)
288 for (j = 0; j < 4; j++) {
291 if ((*p < '0' || *p > '9') && (*p != '/' || j == 0) && *p != 0)
294 while (*p >= '0' && *p <= '9') {
303 if (*p != '/' && *p != 0)
305 *ip = ((*ip) << 8) | octet;
319 scan_ip_mask (const char *ipm, unsigned int *ip, unsigned int *mask)
324 i = scan_ip(&ipm, ip, '/');
332 if (*p < '0' || *p > '9') {
334 i = scan_ip (&ipm, mask, 0);
356 #if defined(CONFIG_FEATURE_HTTPD_BASIC_AUTH) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES)
357 static void free_config_lines(Htaccess **pprev)
359 Htaccess *prev = *pprev;
362 Htaccess *cur = prev;
372 #define FIRST_PARSE 0
373 #define SUBDIR_PARSE 1
374 #define SIGNALED_PARSE 2
375 #define FIND_FROM_HTTPD_ROOT 3
376 /****************************************************************************
378 > $Function: parse_conf()
380 * $Description: parse configuration file into in-memory linked list.
382 * The first non-white character is examined to determine if the config line
383 * is one of the following:
384 * .ext:mime/type # new mime type not compiled into httpd
385 * [adAD]:from # ip address allow/deny, * for wildcard
386 * /path:user:pass # username/password
388 * Any previous IP rules are discarded.
389 * If the flag argument is not SUBDIR_PARSE then all /path and mime rules
390 * are also discarded. That is, previous settings are retained if flag is
394 * (const char *) path . . null for ip address checks, path for password
396 * (int) flag . . . . . . the source of the parse request.
400 ****************************************************************************/
401 static void parse_conf(const char *path, int flag)
404 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
405 Htaccess *prev, *cur;
406 #elif CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
410 const char *cf = config->configFile;
415 /* free previous ip setup if present */
416 Htaccess_IP *pip = config->ip_a_d;
419 Htaccess_IP *cur_ipl = pip;
424 config->ip_a_d = NULL;
426 config->flg_deny_all = 0;
428 #if defined(CONFIG_FEATURE_HTTPD_BASIC_AUTH) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR)
429 /* retain previous auth and mime config only for subdir parse */
430 if (flag != SUBDIR_PARSE) {
431 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
432 free_config_lines(&config->auth);
434 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
435 free_config_lines(&config->mime_a);
437 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
438 free_config_lines(&config->script_i);
443 if (flag == SUBDIR_PARSE || cf == NULL) {
444 cf = alloca(strlen(path) + sizeof(httpd_conf) + 2);
446 if (flag == FIRST_PARSE)
447 bb_error_msg_and_die(bb_msg_memory_exhausted);
450 sprintf((char *)cf, "%s/%s", path, httpd_conf);
453 while ((f = fopen(cf, "r")) == NULL) {
454 if (flag == SUBDIR_PARSE || flag == FIND_FROM_HTTPD_ROOT) {
455 /* config file not found, no changes to config */
458 if (config->configFile && flag == FIRST_PARSE) /* if -c option given */
459 bb_perror_msg_and_die("%s", cf);
460 flag = FIND_FROM_HTTPD_ROOT;
464 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
467 /* This could stand some work */
468 while ( (p0 = fgets(buf, sizeof(buf), f)) != NULL) {
470 for (p = p0; *p0 != 0 && *p0 != '#'; p0++) {
473 if (*p0 == ':' && c == NULL)
479 /* test for empty or strange line */
480 if (c == NULL || *c == 0)
487 /* memorize deny all */
488 config->flg_deny_all++;
490 /* skip default other "word:*" config lines */
496 else if (*p0 != 'D' && *p0 != 'A'
497 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
500 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
503 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
508 if (*p0 == 'A' || *p0 == 'D') {
509 /* storing current config IP line */
510 pip = calloc(1, sizeof(Htaccess_IP));
512 if (scan_ip_mask (c, &(pip->ip), &(pip->mask))) {
513 /* syntax IP{/mask} error detected, protect all */
517 pip->allow_deny = *p0;
519 /* Deny:form_IP move top */
520 pip->next = config->ip_a_d;
521 config->ip_a_d = pip;
523 /* add to bottom A:form_IP config line */
524 Htaccess_IP *prev_IP = config->ip_a_d;
526 if (prev_IP == NULL) {
527 config->ip_a_d = pip;
529 while (prev_IP->next)
530 prev_IP = prev_IP->next;
537 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
539 /* make full path from httpd root / curent_path / config_line_path */
540 cf = flag == SUBDIR_PARSE ? path : "";
541 p0 = malloc(strlen(cf) + (c - buf) + 2 + strlen(c));
545 sprintf(p0, "/%s%s", cf, buf);
547 /* another call bb_simplify_path */
552 if (*cf == '/') { /* skip duplicate (or initial) slash */
554 } else if (*cf == '.') {
555 if (cf[1] == '/' || cf[1] == 0) { /* remove extra '.' */
557 } else if ((cf[1] == '.') && (cf[2] == '/' || cf[2] == 0)) {
560 while (*--p != '/'); /* omit previous dir */
569 if ((p == p0) || (*p != '/')) { /* not a trailing slash */
570 ++p; /* so keep last character */
573 sprintf(p0, "%s:%s", p0, c);
577 #if defined(CONFIG_FEATURE_HTTPD_BASIC_AUTH) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES) || defined(CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR)
578 /* storing current config line */
579 cur = calloc(1, sizeof(Htaccess) + strlen(p0));
581 cf = strcpy(cur->before_colon, p0);
584 cur->after_colon = c;
585 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
587 /* config .mime line move top for overwrite previous */
588 cur->next = config->mime_a;
589 config->mime_a = cur;
593 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
594 if (*cf == '*' && cf[1] == '.') {
595 /* config script interpreter line move top for overwrite previous */
596 cur->next = config->script_i;
597 config->script_i = cur;
601 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
605 config->auth = prev = cur;
607 /* sort path, if current lenght eq or bigger then move up */
608 Htaccess *prev_hti = config->auth;
609 size_t l = strlen(cf);
612 for (hti = prev_hti; hti; hti = hti->next) {
613 if (l >= strlen(hti->before_colon)) {
614 /* insert before hti */
616 if (prev_hti != hti) {
617 prev_hti->next = cur;
625 prev_hti = prev_hti->next;
627 if (!hti) { /* not inserted, add to bottom */
639 #ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
640 /****************************************************************************
642 > $Function: encodeString()
644 * $Description: Given a string, html encode special characters.
645 * This is used for the -e command line option to provide an easy way
646 * for scripts to encode result data without confusing browsers. The
647 * returned string pointer is memory allocated by malloc().
650 * (const char *) string . . The first string to encode.
652 * $Return: (char *) . . . .. . . A pointer to the encoded string.
654 * $Errors: Returns a null string ("") if memory is not available.
656 ****************************************************************************/
657 static char *encodeString(const char *string)
659 /* take the simple route and encode everything */
660 /* could possibly scan once to get length. */
661 int len = strlen(string);
662 char *out = malloc(len * 6 + 1);
667 while ((ch = *string++)) {
668 // very simple check for what to encode
669 if (isalnum(ch)) *p++ = ch;
670 else p += sprintf(p, "&#%d;", (unsigned char) ch);
675 #endif /* CONFIG_FEATURE_HTTPD_ENCODE_URL_STR */
677 /****************************************************************************
679 > $Function: decodeString()
681 * $Description: Given a URL encoded string, convert it to plain ascii.
682 * Since decoding always makes strings smaller, the decode is done in-place.
683 * Thus, callers should strdup() the argument if they do not want the
684 * argument modified. The return is the original pointer, allowing this
685 * function to be easily used as arguments to other functions.
688 * (char *) string . . . The first string to decode.
689 * (int) flag . . . 1 if require decode '+' as ' ' for CGI
691 * $Return: (char *) . . . . A pointer to the decoded string (same as input).
695 ****************************************************************************/
696 static char *decodeString(char *orig, int flag_plus_to_space)
698 /* note that decoded string is always shorter than original */
703 if (*ptr == '+' && flag_plus_to_space) { *string++ = ' '; ptr++; }
704 else if (*ptr != '%') *string++ = *ptr++;
706 unsigned int value1, value2;
709 if (sscanf(ptr, "%1X", &value1) != 1 ||
710 sscanf(ptr+1, "%1X", &value2) != 1) {
711 if (!flag_plus_to_space)
715 value1 = value1 * 16 + value2;
716 if (value1 == '/' || value1 == 0)
728 #ifdef CONFIG_FEATURE_HTTPD_CGI
729 /****************************************************************************
731 > $Function: addEnv()
733 * $Description: Add an environment variable setting to the global list.
734 * A NAME=VALUE string is allocated, filled, and added to the list of
735 * environment settings passed to the cgi execution script.
738 * (char *) name_before_underline - The first part environment variable name.
739 * (char *) name_after_underline - The second part environment variable name.
740 * (char *) value . . The value to which the env variable is set.
744 * $Errors: Silently returns if the env runs out of space to hold the new item
746 ****************************************************************************/
747 static void addEnv(const char *name_before_underline,
748 const char *name_after_underline, const char *value)
751 const char *underline;
755 underline = *name_after_underline ? "_" : "";
756 asprintf(&s, "%s%s%s=%s", name_before_underline, underline,
757 name_after_underline, value);
763 #if defined(CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV) || defined(CONFIG_FEATURE_HTTPD_WITHOUT_INETD)
764 /* set environs SERVER_PORT and REMOTE_PORT */
765 static void addEnvPort(const char *port_name)
769 sprintf(buf, "%u", config->port);
770 addEnv(port_name, "PORT", buf);
773 #endif /* CONFIG_FEATURE_HTTPD_CGI */
776 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
777 /****************************************************************************
779 > $Function: decodeBase64()
781 > $Description: Decode a base 64 data stream as per rfc1521.
782 * Note that the rfc states that none base64 chars are to be ignored.
783 * Since the decode always results in a shorter size than the input, it is
784 * OK to pass the input arg as an output arg.
787 * (char *) Data . . . . A pointer to a base64 encoded string.
788 * Where to place the decoded data.
794 ****************************************************************************/
795 static void decodeBase64(char *Data)
798 const unsigned char *in = (const unsigned char *)Data;
799 // The decoded size will be at most 3/4 the size of the encoded
800 unsigned long ch = 0;
806 if (t >= '0' && t <= '9')
808 else if (t >= 'A' && t <= 'Z')
810 else if (t >= 'a' && t <= 'z')
824 *Data++ = (char) (ch >> 16);
825 *Data++ = (char) (ch >> 8);
835 #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
836 /****************************************************************************
838 > $Function: openServer()
840 * $Description: create a listen server socket on the designated port.
842 * $Return: (int) . . . A connection socket. -1 for errors.
846 ****************************************************************************/
847 static int openServer(void)
849 struct sockaddr_in lsocket;
853 /* create the socket right now */
854 /* inet_addr() returns a value that is already in network order */
855 memset(&lsocket, 0, sizeof(lsocket));
856 lsocket.sin_family = AF_INET;
857 lsocket.sin_addr.s_addr = INADDR_ANY;
858 lsocket.sin_port = htons(config->port);
859 fd = xsocket(AF_INET, SOCK_STREAM, 0);
860 /* tell the OS it's OK to reuse a previous address even though */
861 /* it may still be in a close down state. Allows bind to succeed. */
863 setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, (void *)&on, sizeof(on)) ;
865 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void *)&on, sizeof(on)) ;
867 xbind(fd, (struct sockaddr *)&lsocket, sizeof(lsocket));
869 signal(SIGCHLD, SIG_IGN); /* prevent zombie (defunct) processes */
872 #endif /* CONFIG_FEATURE_HTTPD_WITHOUT_INETD */
874 /****************************************************************************
876 > $Function: sendHeaders()
878 * $Description: Create and send HTTP response headers.
879 * The arguments are combined and sent as one write operation. Note that
880 * IE will puke big-time if the headers are not sent in one packet and the
881 * second packet is delayed for any reason.
884 * (HttpResponseNum) responseNum . . . The result code to send.
886 * $Return: (int) . . . . writing errors
888 ****************************************************************************/
889 static int sendHeaders(HttpResponseNum responseNum)
891 char *buf = config->buf;
892 const char *responseString = "";
893 const char *infoString = 0;
894 const char *mime_type;
896 time_t timer = time(0);
901 i < (sizeof(httpResponseNames)/sizeof(httpResponseNames[0])); i++) {
902 if (httpResponseNames[i].type == responseNum) {
903 responseString = httpResponseNames[i].name;
904 infoString = httpResponseNames[i].info;
908 /* error message is HTML */
909 mime_type = responseNum == HTTP_OK ?
910 config->httpd_found.found_mime_type : "text/html";
912 /* emit the current date */
913 strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&timer));
915 "HTTP/1.0 %d %s\r\nContent-type: %s\r\n"
916 "Date: %s\r\nConnection: close\r\n",
917 responseNum, responseString, mime_type, timeStr);
919 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
920 if (responseNum == HTTP_UNAUTHORIZED) {
921 len += sprintf(buf+len, "WWW-Authenticate: Basic realm=\"%s\"\r\n",
925 if (responseNum == HTTP_MOVED_TEMPORARILY) {
926 len += sprintf(buf+len, "Location: %s/%s%s\r\n",
927 config->httpd_found.found_moved_temporarily,
928 (config->query ? "?" : ""),
929 (config->query ? config->query : ""));
932 if (config->ContentLength != -1) { /* file */
933 strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&config->last_mod));
934 len += sprintf(buf+len, "Last-Modified: %s\r\n%s " cont_l_fmt "\r\n",
935 timeStr, Content_length, cont_l_type config->ContentLength);
940 len += sprintf(buf+len,
941 "<HEAD><TITLE>%d %s</TITLE></HEAD>\n"
942 "<BODY><H1>%d %s</H1>\n%s\n</BODY>\n",
943 responseNum, responseString,
944 responseNum, responseString, infoString);
947 fprintf(stderr, "Headers: '%s'", buf);
949 return full_write(a_c_w, buf, len);
952 /****************************************************************************
954 > $Function: getLine()
956 * $Description: Read from the socket until an end of line char found.
958 * Characters are read one at a time until an eol sequence is found.
960 * $Return: (int) . . . . number of characters read. -1 if error.
962 ****************************************************************************/
963 static int getLine(void)
966 char *buf = config->buf;
968 while (read(a_c_r, buf + count, 1) == 1) {
969 if (buf[count] == '\r') continue;
970 if (buf[count] == '\n') {
974 if (count < (MAX_MEMORY_BUFF-1)) /* check owerflow */
977 if (count) return count;
981 #ifdef CONFIG_FEATURE_HTTPD_CGI
982 /****************************************************************************
984 > $Function: sendCgi()
986 * $Description: Execute a CGI script and send it's stdout back
988 * Environment variables are set up and the script is invoked with pipes
989 * for stdin/stdout. If a post is being done the script is fed the POST
990 * data in addition to setting the QUERY_STRING variable (for GETs or POSTs).
993 * (const char *) url . . . . . . The requested URL (with leading /).
994 * (int bodyLen) . . . . . . . . Length of the post body.
995 * (const char *cookie) . . . . . For set HTTP_COOKIE.
996 * (const char *content_type) . . For set CONTENT_TYPE.
999 * $Return: (char *) . . . . A pointer to the decoded string (same as input).
1003 ****************************************************************************/
1004 static int sendCgi(const char *url,
1005 const char *request, int bodyLen, const char *cookie,
1006 const char *content_type)
1008 int fromCgi[2]; /* pipe for reading data from CGI */
1009 int toCgi[2]; /* pipe for sending data to CGI */
1011 static char * argp[] = { 0, 0 };
1018 if (pipe(fromCgi) != 0) {
1021 if (pipe(toCgi) != 0) {
1034 char *purl = strdup(url);
1035 char realpath_buff[MAXPATHLEN];
1043 dup2(inFd, 0); // replace stdin with the pipe
1044 dup2(outFd, 1); // replace stdout with the pipe
1046 dup2(outFd, 2); // replace stderr with the pipe
1057 while ((script = strchr(script + 1, '/')) != NULL) {
1058 /* have script.cgi/PATH_INFO or dirs/script.cgi[/PATH_INFO] */
1062 if (is_directory(purl + 1, 1, &sb) == 0) {
1063 /* not directory, found script.cgi/PATH_INFO */
1067 *script = '/'; /* is directory, find next '/' */
1069 addEnv("PATH", "INFO", script); /* set /PATH_INFO or NULL */
1070 addEnv("PATH", "", getenv("PATH"));
1071 addEnv("REQUEST", "METHOD", request);
1072 if (config->query) {
1073 char *uri = alloca(strlen(purl) + 2 + strlen(config->query));
1075 sprintf(uri, "%s?%s", purl, config->query);
1076 addEnv("REQUEST", "URI", uri);
1078 addEnv("REQUEST", "URI", purl);
1081 *script = '\0'; /* reduce /PATH_INFO */
1082 /* SCRIPT_FILENAME required by PHP in CGI mode */
1083 if (realpath(purl + 1, realpath_buff))
1084 addEnv("SCRIPT", "FILENAME", realpath_buff);
1087 /* set SCRIPT_NAME as full path: /cgi-bin/dirs/script.cgi */
1088 addEnv("SCRIPT_NAME", "", purl);
1089 addEnv("QUERY_STRING", "", config->query);
1090 addEnv("SERVER", "SOFTWARE", httpdVersion);
1091 addEnv("SERVER", "PROTOCOL", "HTTP/1.0");
1092 addEnv("GATEWAY_INTERFACE", "", "CGI/1.1");
1093 addEnv("REMOTE", "ADDR", config->rmt_ip_str);
1094 #ifdef CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
1095 addEnvPort("REMOTE");
1100 sprintf(sbl, "%d", bodyLen);
1101 addEnv("CONTENT", "LENGTH", sbl);
1104 addEnv("HTTP", "COOKIE", cookie);
1106 addEnv("CONTENT", "TYPE", content_type);
1107 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1108 if (config->remoteuser) {
1109 addEnv("REMOTE", "USER", config->remoteuser);
1110 addEnv("AUTH_TYPE", "", "Basic");
1113 if (config->referer)
1114 addEnv("HTTP", "REFERER", config->referer);
1116 /* set execve argp[0] without path */
1117 argp[0] = strrchr(purl, '/') + 1;
1118 /* but script argp[0] must have absolute path and chdiring to this */
1119 if (*realpath_buff) {
1120 script = strrchr(realpath_buff, '/');
1123 if (chdir(realpath_buff) == 0) {
1124 // now run the program. If it fails,
1125 // use _exit() so no destructors
1126 // get called and make a mess.
1127 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
1128 char *interpr = NULL;
1129 char *suffix = strrchr(purl, '.');
1133 for (cur = config->script_i; cur; cur = cur->next)
1134 if (strcmp(cur->before_colon + 1, suffix) == 0) {
1135 interpr = cur->after_colon;
1141 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
1143 execv(interpr, argp);
1146 execv(realpath_buff, argp);
1150 #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
1151 config->accepted_socket = 1; /* send to stdout */
1153 sendHeaders(HTTP_NOT_FOUND);
1160 /* parent process */
1162 size_t post_readed_size = 0, post_readed_idx = 0;
1168 signal(SIGPIPE, SIG_IGN);
1179 FD_SET(inFd, &readSet);
1180 if (bodyLen > 0 || post_readed_size > 0) {
1181 FD_SET(outFd, &writeSet);
1182 nfound = outFd > inFd ? outFd : inFd;
1183 if (post_readed_size == 0) {
1184 FD_SET(a_c_r, &readSet);
1188 /* Now wait on the set of sockets! */
1189 nfound = select(nfound + 1, &readSet, &writeSet, 0, NULL);
1195 nfound = select(inFd + 1, &readSet, 0, 0, NULL);
1199 if (waitpid(pid, &status, WNOHANG) > 0) {
1202 if (WIFEXITED(status))
1203 bb_error_msg("piped has exited with status=%d", WEXITSTATUS(status));
1204 if (WIFSIGNALED(status))
1205 bb_error_msg("piped has exited with signal=%d", WTERMSIG(status));
1209 } else if (post_readed_size > 0 && FD_ISSET(outFd, &writeSet)) {
1210 count = full_write(outFd, wbuf + post_readed_idx, post_readed_size);
1212 post_readed_size -= count;
1213 post_readed_idx += count;
1214 if (post_readed_size == 0)
1215 post_readed_idx = 0;
1217 post_readed_size = post_readed_idx = bodyLen = 0; /* broken pipe to CGI */
1219 } else if (bodyLen > 0 && post_readed_size == 0 && FD_ISSET(a_c_r, &readSet)) {
1220 count = bodyLen > (int)sizeof(wbuf) ? (int)sizeof(wbuf) : bodyLen;
1221 count = safe_read(a_c_r, wbuf, count);
1223 post_readed_size += count;
1226 bodyLen = 0; /* closed */
1229 if (FD_ISSET(inFd, &readSet)) {
1231 char *rbuf = config->buf;
1234 # define PIPESIZE 4096 /* amount of buffering in a pipe */
1236 # define PIPESIZE PIPE_BUF
1238 #if PIPESIZE >= MAX_MEMORY_BUFF
1239 # error "PIPESIZE >= MAX_MEMORY_BUFF"
1242 // There is something to read
1243 count = safe_read(inFd, rbuf, PIPESIZE);
1249 /* check to see if the user script added headers */
1250 if (strncmp(rbuf, "HTTP/1.0 200 OK\r\n", 4) != 0) {
1251 full_write(s, "HTTP/1.0 200 OK\r\n", 17);
1253 if (strstr(rbuf, "ontent-") == 0) {
1254 full_write(s, "Content-type: text/plain\r\n\r\n", 28);
1258 if (full_write(s, rbuf, count) != count)
1262 fprintf(stderr, "cgi read %d bytes\n", count);
1270 #endif /* CONFIG_FEATURE_HTTPD_CGI */
1272 /****************************************************************************
1274 > $Function: sendFile()
1276 * $Description: Send a file response to an HTTP request
1279 * (const char *) url . . The URL requested.
1281 * $Return: (int) . . . . . . Always 0.
1283 ****************************************************************************/
1284 static int sendFile(const char *url)
1288 const char * const * table;
1289 const char * try_suffix;
1291 suffix = strrchr(url, '.');
1293 for (table = suffixTable; *table; table += 2)
1294 if (suffix != NULL && (try_suffix = strstr(*table, suffix)) != 0) {
1295 try_suffix += strlen(suffix);
1296 if (*try_suffix == 0 || *try_suffix == '.')
1299 /* also, if not found, set default as "application/octet-stream"; */
1300 config->httpd_found.found_mime_type = *(table+1);
1301 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
1305 for (cur = config->mime_a; cur; cur = cur->next) {
1306 if (strcmp(cur->before_colon, suffix) == 0) {
1307 config->httpd_found.found_mime_type = cur->after_colon;
1312 #endif /* CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES */
1315 fprintf(stderr, "Sending file '%s' Content-type: %s\n",
1316 url, config->httpd_found.found_mime_type);
1319 f = open(url, O_RDONLY);
1322 char *buf = config->buf;
1324 sendHeaders(HTTP_OK);
1325 while ((count = full_read(f, buf, MAX_MEMORY_BUFF)) > 0) {
1326 if (full_write(a_c_w, buf, count) != count)
1332 bb_perror_msg("Unable to open '%s'", url);
1334 sendHeaders(HTTP_NOT_FOUND);
1340 static int checkPermIP(void)
1344 /* This could stand some work */
1345 for (cur = config->ip_a_d; cur; cur = cur->next) {
1347 fprintf(stderr, "checkPermIP: '%s' ? ", config->rmt_ip_str);
1348 fprintf(stderr, "'%u.%u.%u.%u/%u.%u.%u.%u'\n",
1349 (unsigned char)(cur->ip >> 24),
1350 (unsigned char)(cur->ip >> 16),
1351 (unsigned char)(cur->ip >> 8),
1353 (unsigned char)(cur->mask >> 24),
1354 (unsigned char)(cur->mask >> 16),
1355 (unsigned char)(cur->mask >> 8),
1358 if ((config->rmt_ip & cur->mask) == cur->ip)
1359 return cur->allow_deny == 'A'; /* Allow/Deny */
1362 /* if unconfigured, return 1 - access from all */
1363 return !config->flg_deny_all;
1366 /****************************************************************************
1368 > $Function: checkPerm()
1370 * $Description: Check the permission file for access password protected.
1372 * If config file isn't present, everything is allowed.
1373 * Entries are of the form you can see example from header source
1376 * (const char *) path . . . . The file path.
1377 * (const char *) request . . . User information to validate.
1379 * $Return: (int) . . . . . . . . . 1 if request OK, 0 otherwise.
1381 ****************************************************************************/
1383 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1384 static int checkPerm(const char *path, const char *request)
1390 const char *prev = NULL;
1392 /* This could stand some work */
1393 for (cur = config->auth; cur; cur = cur->next) {
1394 p0 = cur->before_colon;
1395 if (prev != NULL && strcmp(prev, p0) != 0)
1396 continue; /* find next identical */
1397 p = cur->after_colon;
1399 fprintf(stderr,"checkPerm: '%s' ? '%s'\n", p0, request);
1402 size_t l = strlen(p0);
1404 if (strncmp(p0, path, l) == 0 &&
1405 (l == 1 || path[l] == '/' || path[l] == 0)) {
1407 /* path match found. Check request */
1408 /* for check next /path:user:password */
1410 u = strchr(request, ':');
1412 /* bad request, ':' required */
1416 #ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
1421 if (strncmp(p, request, u-request) != 0) {
1422 /* user uncompared */
1425 pp = strchr(p, ':');
1426 if (pp && pp[1] == '$' && pp[2] == '1' &&
1427 pp[3] == '$' && pp[4]) {
1429 cipher = pw_encrypt(u+1, pp);
1430 if (strcmp(cipher, pp) == 0)
1431 goto set_remoteuser_var; /* Ok */
1437 if (strcmp(p, request) == 0) {
1438 #ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
1441 config->remoteuser = strdup(request);
1442 if (config->remoteuser)
1443 config->remoteuser[(u - request)] = 0;
1451 return prev == NULL;
1454 #endif /* CONFIG_FEATURE_HTTPD_BASIC_AUTH */
1456 /****************************************************************************
1458 > $Function: handle_sigalrm()
1460 * $Description: Handle timeouts
1462 ****************************************************************************/
1464 static void handle_sigalrm(int sig)
1466 sendHeaders(HTTP_REQUEST_TIMEOUT);
1467 config->alarm_signaled = sig;
1470 /****************************************************************************
1472 > $Function: handleIncoming()
1474 * $Description: Handle an incoming http request.
1476 ****************************************************************************/
1477 static void handleIncoming(void)
1479 char *buf = config->buf;
1486 #ifdef CONFIG_FEATURE_HTTPD_CGI
1487 const char *prequest = request_GET;
1490 char *content_type = 0;
1495 struct sigaction sa;
1497 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1498 int credentials = -1; /* if not requred this is Ok */
1501 sa.sa_handler = handle_sigalrm;
1502 sigemptyset(&sa.sa_mask);
1503 sa.sa_flags = 0; /* no SA_RESTART */
1504 sigaction(SIGALRM, &sa, NULL);
1509 (void) alarm(TIMEOUT);
1513 purl = strpbrk(buf, " \t");
1516 sendHeaders(HTTP_BAD_REQUEST);
1520 #ifdef CONFIG_FEATURE_HTTPD_CGI
1521 if (strcasecmp(buf, prequest) != 0) {
1523 if (strcasecmp(buf, prequest) != 0) {
1524 sendHeaders(HTTP_NOT_IMPLEMENTED);
1529 if (strcasecmp(buf, request_GET) != 0) {
1530 sendHeaders(HTTP_NOT_IMPLEMENTED);
1535 count = sscanf(purl, " %[^ ] HTTP/%d.%*d", buf, &blank);
1537 if (count < 1 || buf[0] != '/') {
1538 /* Garbled request/URL */
1541 url = alloca(strlen(buf) + 12); /* + sizeof("/index.html\0") */
1543 sendHeaders(HTTP_INTERNAL_SERVER_ERROR);
1547 /* extract url args if present */
1548 test = strchr(url, '?');
1551 config->query = test;
1554 test = decodeString(url, 0);
1557 if (test == (buf+1)) {
1558 sendHeaders(HTTP_NOT_FOUND);
1561 /* algorithm stolen from libbb bb_simplify_path(),
1562 but don`t strdup and reducing trailing slash and protect out root */
1567 if (*test == '/') { /* skip duplicate (or initial) slash */
1569 } else if (*test == '.') {
1570 if (test[1] == '/' || test[1] == 0) { /* skip extra '.' */
1572 } else if ((test[1] == '.') && (test[2] == '/' || test[2] == 0)) {
1575 /* protect out root */
1578 while (*--purl != '/'); /* omit previous dir */
1586 *++purl = 0; /* so keep last character */
1587 test = purl; /* end ptr */
1589 /* If URL is directory, adding '/' */
1590 if (test[-1] != '/') {
1591 if (is_directory(url + 1, 1, &sb)) {
1592 config->httpd_found.found_moved_temporarily = url;
1596 fprintf(stderr, "url='%s', args=%s\n", url, config->query);
1600 ip_allowed = checkPermIP();
1601 while (ip_allowed && (test = strchr(test + 1, '/')) != NULL) {
1602 /* have path1/path2 */
1604 if (is_directory(url + 1, 1, &sb)) {
1605 /* may be having subdir config */
1606 parse_conf(url + 1, SUBDIR_PARSE);
1607 ip_allowed = checkPermIP();
1612 // read until blank line for HTTP version specified, else parse immediate
1620 fprintf(stderr, "Header: '%s'\n", buf);
1623 #ifdef CONFIG_FEATURE_HTTPD_CGI
1624 /* try and do our best to parse more lines */
1625 if ((strncasecmp(buf, Content_length, 15) == 0)) {
1626 if (prequest != request_GET)
1627 length = strtol(buf + 15, 0, 0); // extra read only for POST
1628 } else if ((strncasecmp(buf, "Cookie:", 7) == 0)) {
1629 for (test = buf + 7; isspace(*test); test++)
1631 cookie = strdup(test);
1632 } else if ((strncasecmp(buf, "Content-Type:", 13) == 0)) {
1633 for (test = buf + 13; isspace(*test); test++)
1635 content_type = strdup(test);
1636 } else if ((strncasecmp(buf, "Referer:", 8) == 0)) {
1637 for (test = buf + 8; isspace(*test); test++)
1639 config->referer = strdup(test);
1643 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1644 if (strncasecmp(buf, "Authorization:", 14) == 0) {
1645 /* We only allow Basic credentials.
1646 * It shows up as "Authorization: Basic <userid:password>" where
1647 * the userid:password is base64 encoded.
1649 for (test = buf + 14; isspace(*test); test++)
1651 if (strncasecmp(test, "Basic", 5) != 0)
1654 test += 5; /* decodeBase64() skiping space self */
1656 credentials = checkPerm(url, test);
1658 #endif /* CONFIG_FEATURE_HTTPD_BASIC_AUTH */
1660 } /* while extra header reading */
1663 if (config->alarm_signaled)
1666 if (strcmp(strrchr(url, '/') + 1, httpd_conf) == 0 || ip_allowed == 0) {
1667 /* protect listing [/path]/httpd_conf or IP deny */
1668 #ifdef CONFIG_FEATURE_HTTPD_CGI
1669 FORBIDDEN: /* protect listing /cgi-bin */
1671 sendHeaders(HTTP_FORBIDDEN);
1675 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1676 if (credentials <= 0 && checkPerm(url, ":") == 0) {
1677 sendHeaders(HTTP_UNAUTHORIZED);
1682 if (config->httpd_found.found_moved_temporarily) {
1683 sendHeaders(HTTP_MOVED_TEMPORARILY);
1685 /* clear unforked memory flag */
1686 config->httpd_found.found_moved_temporarily = NULL;
1691 test = url + 1; /* skip first '/' */
1693 #ifdef CONFIG_FEATURE_HTTPD_CGI
1694 /* if strange Content-Length */
1698 if (strncmp(test, "cgi-bin", 7) == 0) {
1699 if (test[7] == '/' && test[8] == 0)
1700 goto FORBIDDEN; // protect listing cgi-bin/
1701 sendCgi(url, prequest, length, cookie, content_type);
1703 if (prequest != request_GET)
1704 sendHeaders(HTTP_NOT_IMPLEMENTED);
1706 #endif /* CONFIG_FEATURE_HTTPD_CGI */
1707 if (purl[-1] == '/')
1708 strcpy(purl, "index.html");
1709 if (stat(test, &sb) == 0) {
1710 config->ContentLength = sb.st_size;
1711 config->last_mod = sb.st_mtime;
1714 #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
1715 /* unset if non inetd looped */
1716 config->ContentLength = -1;
1719 #ifdef CONFIG_FEATURE_HTTPD_CGI
1727 #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
1728 /* from inetd don`t looping: freeing, closing automatic from exit always */
1730 fprintf(stderr, "closing socket\n");
1732 # ifdef CONFIG_FEATURE_HTTPD_CGI
1735 free(config->referer);
1736 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1737 free(config->remoteuser);
1740 #endif /* CONFIG_FEATURE_HTTPD_WITHOUT_INETD */
1741 shutdown(a_c_w, SHUT_WR);
1743 /* Properly wait for remote to closed */
1745 FD_SET (a_c_r, &s_fd) ;
1750 retval = select (a_c_r + 1, &s_fd, NULL, NULL, &tv);
1751 } while (retval > 0 && (read (a_c_r, buf, sizeof (config->buf)) > 0));
1753 shutdown(a_c_r, SHUT_RD);
1754 #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
1755 close(config->accepted_socket);
1756 #endif /* CONFIG_FEATURE_HTTPD_WITHOUT_INETD */
1759 /****************************************************************************
1761 > $Function: miniHttpd()
1763 * $Description: The main http server function.
1765 * Given an open socket fildes, listen for new connections and farm out
1766 * the processing as a forked process.
1769 * (int) server. . . The server socket fildes.
1771 * $Return: (int) . . . . Always 0.
1773 ****************************************************************************/
1774 #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
1775 static int miniHttpd(int server)
1777 fd_set readfd, portfd;
1780 FD_SET(server, &portfd);
1782 /* copy the ports we are watching to the readfd set */
1786 /* Now wait INDEFINITELY on the set of sockets! */
1787 if (select(server + 1, &readfd, 0, 0, 0) > 0) {
1788 if (FD_ISSET(server, &readfd)) {
1790 struct sockaddr_in fromAddr;
1792 socklen_t fromAddrLen = sizeof(fromAddr);
1793 int s = accept(server,
1794 (struct sockaddr *)&fromAddr, &fromAddrLen);
1799 config->accepted_socket = s;
1800 config->rmt_ip = ntohl(fromAddr.sin_addr.s_addr);
1801 #if defined(CONFIG_FEATURE_HTTPD_CGI) || DEBUG
1802 sprintf(config->rmt_ip_str, "%u.%u.%u.%u",
1803 (unsigned char)(config->rmt_ip >> 24),
1804 (unsigned char)(config->rmt_ip >> 16),
1805 (unsigned char)(config->rmt_ip >> 8),
1806 config->rmt_ip & 0xff);
1807 config->port = ntohs(fromAddr.sin_port);
1809 bb_error_msg("connection from IP=%s, port %u",
1810 config->rmt_ip_str, config->port);
1812 #endif /* CONFIG_FEATURE_HTTPD_CGI */
1814 /* set the KEEPALIVE option to cull dead connections */
1816 setsockopt(s, SOL_SOCKET, SO_KEEPALIVE, (void *)&on, sizeof (on));
1822 /* This is the spawned thread */
1823 #ifdef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
1824 /* protect reload config, may be confuse checking */
1825 signal(SIGHUP, SIG_IGN);
1842 static int miniHttpd(void)
1844 struct sockaddr_in fromAddrLen;
1845 socklen_t sinlen = sizeof (struct sockaddr_in);
1847 getpeername (0, (struct sockaddr *)&fromAddrLen, &sinlen);
1848 config->rmt_ip = ntohl(fromAddrLen.sin_addr.s_addr);
1849 #ifdef CONFIG_FEATURE_HTTPD_CGI
1850 sprintf(config->rmt_ip_str, "%u.%u.%u.%u",
1851 (unsigned char)(config->rmt_ip >> 24),
1852 (unsigned char)(config->rmt_ip >> 16),
1853 (unsigned char)(config->rmt_ip >> 8),
1854 config->rmt_ip & 0xff);
1856 config->port = ntohs(fromAddrLen.sin_port);
1860 #endif /* CONFIG_FEATURE_HTTPD_WITHOUT_INETD */
1862 #ifdef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
1863 static void sighup_handler(int sig)
1866 struct sigaction sa;
1868 parse_conf(default_path_httpd_conf, sig == SIGHUP ? SIGNALED_PARSE : FIRST_PARSE);
1869 sa.sa_handler = sighup_handler;
1870 sigemptyset(&sa.sa_mask);
1871 sa.sa_flags = SA_RESTART;
1872 sigaction(SIGHUP, &sa, NULL);
1876 enum httpd_opts_nums {
1877 c_opt_config_file = 0,
1880 USE_FEATURE_HTTPD_ENCODE_URL_STR(e_opt_encode_url,)
1881 USE_FEATURE_HTTPD_BASIC_AUTH(r_opt_realm,)
1882 USE_FEATURE_HTTPD_AUTH_MD5(m_opt_md5,)
1883 USE_FEATURE_HTTPD_SETUID(u_opt_setuid,)
1884 USE_FEATURE_HTTPD_WITHOUT_INETD(p_opt_port,)
1887 static const char httpd_opts[]="c:d:h:"
1888 USE_FEATURE_HTTPD_ENCODE_URL_STR("e:")
1889 USE_FEATURE_HTTPD_BASIC_AUTH("r:")
1890 USE_FEATURE_HTTPD_AUTH_MD5("m:")
1891 USE_FEATURE_HTTPD_SETUID("u:")
1892 USE_FEATURE_HTTPD_WITHOUT_INETD("p:");
1894 #define OPT_CONFIG_FILE (1<<c_opt_config_file)
1895 #define OPT_DECODE_URL (1<<d_opt_decode_url)
1896 #define OPT_HOME_HTTPD (1<<h_opt_home_httpd)
1898 #define OPT_ENCODE_URL USE_FEATURE_HTTPD_ENCODE_URL_STR((1<<e_opt_encode_url)) \
1899 SKIP_FEATURE_HTTPD_ENCODE_URL_STR(0)
1901 #define OPT_REALM USE_FEATURE_HTTPD_BASIC_AUTH((1<<r_opt_realm)) \
1902 SKIP_FEATURE_HTTPD_BASIC_AUTH(0)
1904 #define OPT_MD5 USE_FEATURE_HTTPD_AUTH_MD5((1<<m_opt_md5)) \
1905 SKIP_FEATURE_HTTPD_AUTH_MD5(0)
1907 #define OPT_SETUID USE_FEATURE_HTTPD_SETUID((1<<u_opt_setuid)) \
1908 SKIP_FEATURE_HTTPD_SETUID(0)
1910 #define OPT_PORT USE_FEATURE_HTTPD_WITHOUT_INETD((1<<p_opt_port)) \
1911 SKIP_FEATURE_HTTPD_WITHOUT_INETD(0)
1914 int httpd_main(int argc, char *argv[])
1917 const char *home_httpd = home;
1918 char *url_for_decode;
1919 USE_FEATURE_HTTPD_ENCODE_URL_STR(const char *url_for_encode;)
1920 USE_FEATURE_HTTPD_WITHOUT_INETD(const char *s_port;)
1921 USE_FEATURE_HTTPD_WITHOUT_INETD(int server;)
1923 USE_FEATURE_HTTPD_SETUID(const char *s_uid;)
1924 USE_FEATURE_HTTPD_SETUID(long uid = -1;)
1926 USE_FEATURE_HTTPD_AUTH_MD5(const char *pass;)
1928 config = xzalloc(sizeof(*config));
1929 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1930 config->realm = "Web Server Authentication";
1933 #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
1937 config->ContentLength = -1;
1939 opt = bb_getopt_ulflags(argc, argv, httpd_opts,
1940 &(config->configFile), &url_for_decode, &home_httpd
1941 USE_FEATURE_HTTPD_ENCODE_URL_STR(, &url_for_encode)
1942 USE_FEATURE_HTTPD_BASIC_AUTH(, &(config->realm))
1943 USE_FEATURE_HTTPD_AUTH_MD5(, &pass)
1944 USE_FEATURE_HTTPD_SETUID(, &s_uid)
1945 USE_FEATURE_HTTPD_WITHOUT_INETD(, &s_port)
1948 if (opt & OPT_DECODE_URL) {
1949 printf("%s", decodeString(url_for_decode, 1));
1952 #ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
1953 if (opt & OPT_ENCODE_URL) {
1954 printf("%s", encodeString(url_for_encode));
1958 #ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
1959 if (opt & OPT_MD5) {
1960 printf("%s\n", pw_encrypt(pass, "$1$"));
1964 #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
1966 config->port = bb_xgetlarg(s_port, 10, 1, 0xffff);
1967 #ifdef CONFIG_FEATURE_HTTPD_SETUID
1968 if (opt & OPT_SETUID) {
1971 uid = strtol(s_uid, &e, 0);
1974 uid = bb_xgetpwnam(s_uid);
1981 #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
1982 server = openServer();
1983 # ifdef CONFIG_FEATURE_HTTPD_SETUID
1984 /* drop privileges */
1990 #ifdef CONFIG_FEATURE_HTTPD_CGI
1992 char *p = getenv("PATH");
1998 setenv("PATH", p, 1);
1999 # ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
2000 addEnvPort("SERVER");
2005 #ifdef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
2008 parse_conf(default_path_httpd_conf, FIRST_PARSE);
2011 #ifdef CONFIG_FEATURE_HTTPD_WITHOUT_INETD
2013 xdaemon(1, 0); /* don`t change curent directory */
2015 return miniHttpd(server);