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 starts by "/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.
28 * "CGI Environment Variables": http://hoohoo.ncsa.uiuc.edu/cgi/env.html
30 * The applet can also be invoked as a url arg decoder and html text encoder
32 * foo=`httpd -d $foo` # decode "Hello%20World" as "Hello World"
33 * bar=`httpd -e "<Hello World>"` # encode as "<Hello World>"
34 * Note that url encoding for arguments is not the same as html encoding for
35 * presentation. -d decodes a url-encoded argument while -e encodes in html
38 * httpd.conf has the following format:
40 * A:172.20. # Allow address from 172.20.0.0/16
41 * A:10.0.0.0/25 # Allow any address from 10.0.0.0-10.0.0.127
42 * A:10.0.0.0/255.255.255.128 # Allow any address that previous set
43 * A:127.0.0.1 # Allow local loopback connections
44 * D:* # Deny from other IP connections
45 * E404:/path/e404.html # /path/e404.html is the 404 (not found) error page
46 * I:index.html # Show index.html when a directory is requested
48 * P:/url:[http://]hostname[:port]/new/path
49 * # When /urlXXXXXX is requested, reverse proxy
50 * # it to http://hostname[:port]/new/pathXXXXXX
52 * /cgi-bin:foo:bar # Require user foo, pwd bar on urls starting with /cgi-bin/
53 * /adm:admin:setup # Require user admin, pwd setup on urls starting with /adm/
54 * /adm:toor:PaSsWd # or user toor, pwd PaSsWd on urls starting with /adm/
55 * .au:audio/basic # additional mime type for audio.au files
56 * *.php:/path/php # running cgi.php scripts through an interpreter
58 * A/D may be as a/d or allow/deny - only first char matters.
59 * Deny/Allow IP logic:
60 * - Default is to allow all (Allow all (A:*) is a no-op).
61 * - Deny rules take precedence over allow rules.
62 * - "Deny all" rule (D:*) is applied last.
65 * 1. Allow only specified addresses
66 * A:172.20 # Allow any address that begins with 172.20.
67 * A:10.10. # Allow any address that begins with 10.10.
68 * A:127.0.0.1 # Allow local loopback connections
69 * D:* # Deny from other IP connections
71 * 2. Only deny specified addresses
72 * D:1.2.3. # deny from 1.2.3.0 - 1.2.3.255
73 * D:2.3.4. # deny from 2.3.4.0 - 2.3.4.255
74 * A:* # (optional line added for clarity)
76 * If a sub directory contains a config file it is parsed and merged with
77 * any existing settings as if it was appended to the original configuration.
79 * subdir paths are relative to the containing subdir and thus cannot
80 * affect the parent rules.
82 * Note that since the sub dir is parsed in the forked thread servicing the
83 * subdir http request, any merge is discarded when the process exits. As a
84 * result, the subdir settings only have a lifetime of a single request.
86 * Custom error pages can contain an absolute path or be relative to
87 * 'home_httpd'. Error pages are to be static files (no CGI or script). Error
88 * page can only be defined in the root configuration file and are not taken
89 * into account in local (directories) config files.
91 * If -c is not set, an attempt will be made to open the default
92 * root configuration file. If -c is set and the file is not found, the
93 * server exits with an error.
98 #if ENABLE_FEATURE_HTTPD_USE_SENDFILE
99 #include <sys/sendfile.h>
105 #define IOBUF_SIZE 8192 /* IO buffer */
107 /* amount of buffering in a pipe */
109 # define PIPE_BUF 4096
111 #if PIPE_BUF >= IOBUF_SIZE
112 # error "PIPE_BUF >= IOBUF_SIZE"
115 #define HEADER_READ_TIMEOUT 60
117 static const char default_path_httpd_conf[] ALIGN1 = "/etc";
118 static const char httpd_conf[] ALIGN1 = "httpd.conf";
119 static const char HTTP_200[] ALIGN1 = "HTTP/1.0 200 OK\r\n";
121 typedef struct has_next_ptr {
122 struct has_next_ptr *next;
125 /* Must have "next" as a first member */
126 typedef struct Htaccess {
127 struct Htaccess *next;
129 char before_colon[1]; /* really bigger, must be last */
132 /* Must have "next" as a first member */
133 typedef struct Htaccess_IP {
134 struct Htaccess_IP *next;
140 /* Must have "next" as a first member */
141 typedef struct Htaccess_Proxy {
142 struct Htaccess_Proxy *next;
150 HTTP_PARTIAL_CONTENT = 206,
151 HTTP_MOVED_TEMPORARILY = 302,
152 HTTP_BAD_REQUEST = 400, /* malformed syntax */
153 HTTP_UNAUTHORIZED = 401, /* authentication needed, respond with auth hdr */
154 HTTP_NOT_FOUND = 404,
155 HTTP_FORBIDDEN = 403,
156 HTTP_REQUEST_TIMEOUT = 408,
157 HTTP_NOT_IMPLEMENTED = 501, /* used for unrecognized requests */
158 HTTP_INTERNAL_SERVER_ERROR = 500,
160 #if 0 /* future use */
161 HTTP_SWITCHING_PROTOCOLS = 101,
164 HTTP_NON_AUTHORITATIVE_INFO = 203,
165 HTTP_NO_CONTENT = 204,
166 HTTP_MULTIPLE_CHOICES = 300,
167 HTTP_MOVED_PERMANENTLY = 301,
168 HTTP_NOT_MODIFIED = 304,
169 HTTP_PAYMENT_REQUIRED = 402,
170 HTTP_BAD_GATEWAY = 502,
171 HTTP_SERVICE_UNAVAILABLE = 503, /* overload, maintenance */
172 HTTP_RESPONSE_SETSIZE = 0xffffffff
176 static const uint16_t http_response_type[] ALIGN2 = {
178 #if ENABLE_FEATURE_HTTPD_RANGES
179 HTTP_PARTIAL_CONTENT,
181 HTTP_MOVED_TEMPORARILY,
182 HTTP_REQUEST_TIMEOUT,
183 HTTP_NOT_IMPLEMENTED,
184 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
190 HTTP_INTERNAL_SERVER_ERROR,
191 #if 0 /* not implemented */
195 HTTP_MULTIPLE_CHOICES,
196 HTTP_MOVED_PERMANENTLY,
199 HTTP_SERVICE_UNAVAILABLE,
203 static const struct {
206 } http_response[ARRAY_SIZE(http_response_type)] = {
208 #if ENABLE_FEATURE_HTTPD_RANGES
209 { "Partial Content", NULL },
212 { "Request Timeout", "No request appeared within 60 seconds" },
213 { "Not Implemented", "The requested method is not recognized" },
214 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
215 { "Unauthorized", "" },
217 { "Not Found", "The requested URL was not found" },
218 { "Bad Request", "Unsupported method" },
220 { "Internal Server Error", "Internal Server Error" },
221 #if 0 /* not implemented */
225 { "Multiple Choices" },
226 { "Moved Permanently" },
228 { "Bad Gateway", "" },
229 { "Service Unavailable", "" },
235 int verbose; /* must be int (used by getopt32) */
236 smallint flg_deny_all;
238 unsigned rmt_ip; /* used for IP-based allow/deny rules */
240 char *rmt_ip_str; /* for $REMOTE_ADDR and $REMOTE_PORT */
241 const char *bind_addr_or_port;
244 const char *configFile;
245 const char *home_httpd;
246 const char *index_page;
248 const char *found_mime_type;
249 const char *found_moved_temporarily;
250 Htaccess_IP *ip_a_d; /* config allow/deny lines */
252 USE_FEATURE_HTTPD_BASIC_AUTH(const char *g_realm;)
253 USE_FEATURE_HTTPD_BASIC_AUTH(char *remoteuser;)
254 USE_FEATURE_HTTPD_CGI(char *referer;)
255 USE_FEATURE_HTTPD_CGI(char *user_agent;)
257 off_t file_size; /* -1 - unknown */
258 #if ENABLE_FEATURE_HTTPD_RANGES
264 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
265 Htaccess *g_auth; /* config user:password lines */
267 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
268 Htaccess *mime_a; /* config mime types */
270 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
271 Htaccess *script_i; /* config script interpreters */
273 char *iobuf; /* [IOBUF_SIZE] */
274 #define hdr_buf bb_common_bufsiz1
277 #if ENABLE_FEATURE_HTTPD_ERROR_PAGES
278 const char *http_error_page[ARRAY_SIZE(http_response_type)];
280 #if ENABLE_FEATURE_HTTPD_PROXY
281 Htaccess_Proxy *proxy;
284 #define G (*ptr_to_globals)
285 #define verbose (G.verbose )
286 #define flg_deny_all (G.flg_deny_all )
287 #define rmt_ip (G.rmt_ip )
288 #define bind_addr_or_port (G.bind_addr_or_port)
289 #define g_query (G.g_query )
290 #define configFile (G.configFile )
291 #define home_httpd (G.home_httpd )
292 #define index_page (G.index_page )
293 #define found_mime_type (G.found_mime_type )
294 #define found_moved_temporarily (G.found_moved_temporarily)
295 #define last_mod (G.last_mod )
296 #define ip_a_d (G.ip_a_d )
297 #define g_realm (G.g_realm )
298 #define remoteuser (G.remoteuser )
299 #define referer (G.referer )
300 #define user_agent (G.user_agent )
301 #define file_size (G.file_size )
302 #if ENABLE_FEATURE_HTTPD_RANGES
303 #define range_start (G.range_start )
304 #define range_end (G.range_end )
305 #define range_len (G.range_len )
307 #define rmt_ip_str (G.rmt_ip_str )
308 #define g_auth (G.g_auth )
309 #define mime_a (G.mime_a )
310 #define script_i (G.script_i )
311 #define iobuf (G.iobuf )
312 #define hdr_ptr (G.hdr_ptr )
313 #define hdr_cnt (G.hdr_cnt )
314 #define http_error_page (G.http_error_page )
315 #define proxy (G.proxy )
316 #define INIT_G() do { \
317 SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
318 USE_FEATURE_HTTPD_BASIC_AUTH(g_realm = "Web Server Authentication";) \
319 bind_addr_or_port = "80"; \
320 index_page = "index.html"; \
324 #if !ENABLE_FEATURE_HTTPD_RANGES
327 range_end = MAXINT(off_t) - 1,
328 range_len = MAXINT(off_t),
333 #define STRNCASECMP(a, str) strncasecmp((a), (str), sizeof(str)-1)
337 SEND_HEADERS = (1 << 0),
338 SEND_BODY = (1 << 1),
339 SEND_HEADERS_AND_BODY = SEND_HEADERS + SEND_BODY,
341 static void send_file_and_exit(const char *url, int what) NORETURN;
343 static void free_llist(has_next_ptr **pptr)
345 has_next_ptr *cur = *pptr;
347 has_next_ptr *t = cur;
354 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH \
355 || ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES \
356 || ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
357 static ALWAYS_INLINE void free_Htaccess_list(Htaccess **pptr)
359 free_llist((has_next_ptr**)pptr);
363 static ALWAYS_INLINE void free_Htaccess_IP_list(Htaccess_IP **pptr)
365 free_llist((has_next_ptr**)pptr);
368 /* Returns presumed mask width in bits or < 0 on error.
369 * Updates strp, stores IP at provided pointer */
370 static int scan_ip(const char **strp, unsigned *ipp, unsigned char endc)
372 const char *p = *strp;
380 for (j = 0; j < 4; j++) {
383 if ((*p < '0' || *p > '9') && *p != '/' && *p)
386 while (*p >= '0' && *p <= '9') {
397 ip = (ip << 8) | octet;
411 /* Returns 0 on success. Stores IP and mask at provided pointers */
412 static int scan_ip_mask(const char *str, unsigned *ipp, unsigned *maskp)
418 i = scan_ip(&str, ipp, '/');
423 /* there is /xxx after dotted-IP address */
424 i = bb_strtou(str, &p, 10);
426 /* 'xxx' itself is dotted-IP mask, parse it */
427 /* (return 0 (success) only if it has N.N.N.N form) */
428 return scan_ip(&str, maskp, '\0') - 32;
437 if (sizeof(unsigned) == 4 && i == 32) {
438 /* mask >>= 32 below may not work */
444 /* i == 0 -> *maskp = 0x00000000
445 * i == 1 -> *maskp = 0x80000000
446 * i == 4 -> *maskp = 0xf0000000
447 * i == 31 -> *maskp = 0xfffffffe
448 * i == 32 -> *maskp = 0xffffffff */
449 *maskp = (uint32_t)(~mask);
454 * Parse configuration file into in-memory linked list.
456 * The first non-white character is examined to determine if the config line
457 * is one of the following:
458 * .ext:mime/type # new mime type not compiled into httpd
459 * [adAD]:from # ip address allow/deny, * for wildcard
460 * /path:user:pass # username/password
461 * Ennn:error.html # error page for status nnn
462 * P:/url:[http://]hostname[:port]/new/path # reverse proxy
464 * Any previous IP rules are discarded.
465 * If the flag argument is not SUBDIR_PARSE then all /path and mime rules
466 * are also discarded. That is, previous settings are retained if flag is
468 * Error pages are only parsed on the main config file.
470 * path Path where to look for httpd.conf (without filename).
471 * flag Type of the parse request.
474 #define FIRST_PARSE 0
475 #define SUBDIR_PARSE 1
476 #define SIGNALED_PARSE 2
477 #define FIND_FROM_HTTPD_ROOT 3
478 static void parse_conf(const char *path, int flag)
481 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
484 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH \
485 || ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES \
486 || ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
489 const char *filename = configFile;
495 /* discard old rules */
496 free_Htaccess_IP_list(&ip_a_d);
498 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH \
499 || ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES \
500 || ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
501 /* retain previous auth and mime config only for subdir parse */
502 if (flag != SUBDIR_PARSE) {
503 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
504 free_Htaccess_list(&g_auth);
506 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
507 free_Htaccess_list(&mime_a);
509 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
510 free_Htaccess_list(&script_i);
515 if (flag == SUBDIR_PARSE || filename == NULL) {
516 filename = alloca(strlen(path) + sizeof(httpd_conf) + 2);
517 sprintf((char *)filename, "%s/%s", path, httpd_conf);
520 while ((f = fopen(filename, "r")) == NULL) {
521 if (flag == SUBDIR_PARSE || flag == FIND_FROM_HTTPD_ROOT) {
522 /* config file not found, no changes to config */
525 if (configFile && flag == FIRST_PARSE) /* if -c option given */
526 bb_simple_perror_msg_and_die(filename);
527 flag = FIND_FROM_HTTPD_ROOT;
528 filename = httpd_conf;
531 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
534 /* This could stand some work */
535 while ((p0 = fgets(buf, sizeof(buf), f)) != NULL) {
537 for (p = p0; *p0 != '\0' && *p0 != '#'; p0++) {
540 if (*p0 == ':' && after_colon == NULL)
546 /* test for empty or strange line */
547 if (after_colon == NULL || *after_colon == '\0')
550 if (*p0 == 'd' || *p0 == 'a')
551 *p0 -= 0x20; /* a/d -> A/D */
552 if (*after_colon == '*') {
554 /* memorize "deny all" */
557 /* skip assumed "A:*", it is a default anyway */
561 if (*p0 == 'A' || *p0 == 'D') {
562 /* storing current config IP line */
563 pip = xzalloc(sizeof(Htaccess_IP));
564 if (scan_ip_mask(after_colon, &(pip->ip), &(pip->mask))) {
565 /* IP{/mask} syntax error detected, protect all */
569 pip->allow_deny = *p0;
571 /* Deny:from_IP - prepend */
575 /* A:from_IP - append (thus D precedes A) */
576 Htaccess_IP *prev_IP = ip_a_d;
577 if (prev_IP == NULL) {
580 while (prev_IP->next)
581 prev_IP = prev_IP->next;
588 #if ENABLE_FEATURE_HTTPD_ERROR_PAGES
589 if (flag == FIRST_PARSE && *p0 == 'E') {
591 int status = atoi(++p0); /* error status code */
592 if (status < HTTP_CONTINUE) {
593 bb_error_msg("config error '%s' in '%s'", buf, filename);
596 /* then error page; find matching status */
597 for (i = 0; i < ARRAY_SIZE(http_response_type); i++) {
598 if (http_response_type[i] == status) {
599 /* We chdir to home_httpd, thus no need to
600 * concat_path_file(home_httpd, after_colon)
602 http_error_page[i] = xstrdup(after_colon);
610 #if ENABLE_FEATURE_HTTPD_PROXY
611 if (flag == FIRST_PARSE && *p0 == 'P') {
612 /* P:/url:[http://]hostname[:port]/new/path */
613 char *url_from, *host_port, *url_to;
614 Htaccess_Proxy *proxy_entry;
616 url_from = after_colon;
617 host_port = strchr(after_colon, ':');
618 if (host_port == NULL) {
619 bb_error_msg("config error '%s' in '%s'", buf, filename);
623 if (strncmp(host_port, "http://", 7) == 0)
625 if (*host_port == '\0') {
626 bb_error_msg("config error '%s' in '%s'", buf, filename);
629 url_to = strchr(host_port, '/');
630 if (url_to == NULL) {
631 bb_error_msg("config error '%s' in '%s'", buf, filename);
635 proxy_entry = xzalloc(sizeof(Htaccess_Proxy));
636 proxy_entry->url_from = xstrdup(url_from);
637 proxy_entry->host_port = xstrdup(host_port);
639 proxy_entry->url_to = xstrdup(url_to);
640 proxy_entry->next = proxy;
646 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
648 /* make full path from httpd root / current_path / config_line_path */
649 const char *tp = (flag == SUBDIR_PARSE ? path : "");
650 p0 = xmalloc(strlen(tp) + (after_colon - buf) + 2 + strlen(after_colon));
651 after_colon[-1] = '\0';
652 sprintf(p0, "/%s%s", tp, buf);
654 /* looks like bb_simplify_path... */
658 if (*tp == '/') { /* skip duplicate (or initial) slash */
662 if (tp[1] == '/' || tp[1] == '\0') { /* remove extra '.' */
665 if ((tp[1] == '.') && (tp[2] == '/' || tp[2] == '\0')) {
668 while (*--p != '/') /* omit previous dir */
678 if ((p == p0) || (*p != '/')) { /* not a trailing slash */
679 ++p; /* so keep last character */
682 strcpy(p + 1, after_colon);
686 index_page = xstrdup(after_colon);
690 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH \
691 || ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES \
692 || ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
693 /* storing current config line */
694 cur = xzalloc(sizeof(Htaccess) + strlen(p0));
695 strcpy(cur->before_colon, p0);
696 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
697 if (*p0 == '/') /* was malloced - see above */
700 cur->after_colon = strchr(cur->before_colon, ':');
701 *cur->after_colon++ = '\0';
702 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
703 if (cur->before_colon[0] == '.') {
704 /* .mime line: prepend to mime_a list */
710 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
711 if (cur->before_colon[0] == '*' && cur->before_colon[1] == '.') {
712 /* script interpreter line: prepend to script_i list */
713 cur->next = script_i;
718 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
719 //TODO: we do not test for leading "/"??
720 //also, do we leak cur if BASIC_AUTH is off?
725 /* sort path, if current length eq or bigger then move up */
726 Htaccess *prev_hti = g_auth;
727 size_t l = strlen(cur->before_colon);
730 for (hti = prev_hti; hti; hti = hti->next) {
731 if (l >= strlen(hti->before_colon)) {
732 /* insert before hti */
734 if (prev_hti != hti) {
735 prev_hti->next = cur;
743 prev_hti = prev_hti->next;
745 if (!hti) { /* not inserted, add to bottom */
750 #endif /* BASIC_AUTH */
751 #endif /* BASIC_AUTH || MIME_TYPES || SCRIPT_INTERPR */
752 } /* while (fgets) */
756 #if ENABLE_FEATURE_HTTPD_ENCODE_URL_STR
758 * Given a string, html-encode special characters.
759 * This is used for the -e command line option to provide an easy way
760 * for scripts to encode result data without confusing browsers. The
761 * returned string pointer is memory allocated by malloc().
763 * Returns a pointer to the encoded string (malloced).
765 static char *encodeString(const char *string)
767 /* take the simple route and encode everything */
768 /* could possibly scan once to get length. */
769 int len = strlen(string);
770 char *out = xmalloc(len * 6 + 1);
774 while ((ch = *string++)) {
775 /* very simple check for what to encode */
779 p += sprintf(p, "&#%d;", (unsigned char) ch);
784 #endif /* FEATURE_HTTPD_ENCODE_URL_STR */
787 * Given a URL encoded string, convert it to plain ascii.
788 * Since decoding always makes strings smaller, the decode is done in-place.
789 * Thus, callers should xstrdup() the argument if they do not want the
790 * argument modified. The return is the original pointer, allowing this
791 * function to be easily used as arguments to other functions.
793 * string The first string to decode.
794 * option_d 1 if called for httpd -d
796 * Returns a pointer to the decoded string (same as input).
798 static unsigned hex_to_bin(unsigned char c)
805 /* c | 0x20: letters to lower case, non-letters
806 * to (potentially different) non-letters */
807 v = (unsigned)(c | 0x20) - 'a';
813 void t(char c) { printf("'%c'(%u) %u\n", c, c, hex_to_bin(c)); }
814 int main() { t(0x10); t(0x20); t('0'); t('9'); t('A'); t('F'); t('a'); t('f');
815 t('0'-1); t('9'+1); t('A'-1); t('F'+1); t('a'-1); t('f'+1); return 0; }
817 static char *decodeString(char *orig, int option_d)
819 /* note that decoded string is always shorter than original */
824 while ((c = *ptr++) != '\0') {
827 if (option_d && c == '+') {
835 v = hex_to_bin(ptr[0]);
843 v = (v * 16) | hex_to_bin(ptr[1]);
846 if (!option_d && (v == '/' || v == '\0')) {
847 /* caller takes it as indication of invalid
848 * (dangerous wrt exploits) chars */
858 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
860 * Decode a base64 data stream as per rfc1521.
861 * Note that the rfc states that non base64 chars are to be ignored.
862 * Since the decode always results in a shorter size than the input,
863 * it is OK to pass the input arg as an output arg.
864 * Parameter: a pointer to a base64 encoded string.
865 * Decoded data is stored in-place.
867 static void decodeBase64(char *Data)
869 const unsigned char *in = (const unsigned char *)Data;
870 /* The decoded size will be at most 3/4 the size of the encoded */
877 if (t >= '0' && t <= '9')
879 else if (t >= 'A' && t <= 'Z')
881 else if (t >= 'a' && t <= 'z')
895 *Data++ = (char) (ch >> 16);
896 *Data++ = (char) (ch >> 8);
906 * Create a listen server socket on the designated port.
908 static int openServer(void)
910 unsigned n = bb_strtou(bind_addr_or_port, NULL, 10);
911 if (!errno && n && n <= 0xffff)
912 n = create_and_bind_stream_or_die(NULL, n);
914 n = create_and_bind_stream_or_die(bind_addr_or_port, 80);
920 * Log the connection closure and exit.
922 static void log_and_exit(void) NORETURN;
923 static void log_and_exit(void)
925 /* Paranoia. IE said to be buggy. It may send some extra data
926 * or be confused by us just exiting without SHUT_WR. Oh well. */
927 shutdown(1, SHUT_WR);
929 (this also messes up stdin when user runs httpd -i from terminal)
931 while (read(STDIN_FILENO, iobuf, IOBUF_SIZE) > 0)
936 bb_error_msg("closed");
937 _exit(xfunc_error_retval);
941 * Create and send HTTP response headers.
942 * The arguments are combined and sent as one write operation. Note that
943 * IE will puke big-time if the headers are not sent in one packet and the
944 * second packet is delayed for any reason.
945 * responseNum - the result code to send.
947 static void send_headers(int responseNum)
949 static const char RFC1123FMT[] ALIGN1 = "%a, %d %b %Y %H:%M:%S GMT";
951 const char *responseString = "";
952 const char *infoString = NULL;
953 const char *mime_type;
954 #if ENABLE_FEATURE_HTTPD_ERROR_PAGES
955 const char *error_page = NULL;
958 time_t timer = time(0);
962 for (i = 0; i < ARRAY_SIZE(http_response_type); i++) {
963 if (http_response_type[i] == responseNum) {
964 responseString = http_response[i].name;
965 infoString = http_response[i].info;
966 #if ENABLE_FEATURE_HTTPD_ERROR_PAGES
967 error_page = http_error_page[i];
972 /* error message is HTML */
973 mime_type = responseNum == HTTP_OK ?
974 found_mime_type : "text/html";
977 bb_error_msg("response:%u", responseNum);
979 /* emit the current date */
980 strftime(tmp_str, sizeof(tmp_str), RFC1123FMT, gmtime(&timer));
982 "HTTP/1.0 %d %s\r\nContent-type: %s\r\n"
983 "Date: %s\r\nConnection: close\r\n",
984 responseNum, responseString, mime_type, tmp_str);
986 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
987 if (responseNum == HTTP_UNAUTHORIZED) {
988 len += sprintf(iobuf + len,
989 "WWW-Authenticate: Basic realm=\"%s\"\r\n",
993 if (responseNum == HTTP_MOVED_TEMPORARILY) {
994 len += sprintf(iobuf + len, "Location: %s/%s%s\r\n",
995 found_moved_temporarily,
996 (g_query ? "?" : ""),
997 (g_query ? g_query : ""));
1000 #if ENABLE_FEATURE_HTTPD_ERROR_PAGES
1001 if (error_page && access(error_page, R_OK) == 0) {
1002 strcat(iobuf, "\r\n");
1006 fprintf(stderr, "headers: '%s'\n", iobuf);
1007 full_write(STDOUT_FILENO, iobuf, len);
1009 fprintf(stderr, "writing error page: '%s'\n", error_page);
1010 return send_file_and_exit(error_page, SEND_BODY);
1014 if (file_size != -1) { /* file */
1015 strftime(tmp_str, sizeof(tmp_str), RFC1123FMT, gmtime(&last_mod));
1016 #if ENABLE_FEATURE_HTTPD_RANGES
1017 if (responseNum == HTTP_PARTIAL_CONTENT) {
1018 len += sprintf(iobuf + len, "Content-Range: bytes %"OFF_FMT"d-%"OFF_FMT"d/%"OFF_FMT"d\r\n",
1022 file_size = range_end - range_start + 1;
1025 len += sprintf(iobuf + len,
1026 #if ENABLE_FEATURE_HTTPD_RANGES
1027 "Accept-Ranges: bytes\r\n"
1029 "Last-Modified: %s\r\n%s %"OFF_FMT"d\r\n",
1035 iobuf[len++] = '\r';
1036 iobuf[len++] = '\n';
1038 len += sprintf(iobuf + len,
1039 "<HTML><HEAD><TITLE>%d %s</TITLE></HEAD>\n"
1040 "<BODY><H1>%d %s</H1>\n%s\n</BODY></HTML>\n",
1041 responseNum, responseString,
1042 responseNum, responseString, infoString);
1045 fprintf(stderr, "headers: '%s'\n", iobuf);
1046 if (full_write(STDOUT_FILENO, iobuf, len) != len) {
1048 bb_perror_msg("error");
1053 static void send_headers_and_exit(int responseNum) NORETURN;
1054 static void send_headers_and_exit(int responseNum)
1056 send_headers(responseNum);
1061 * Read from the socket until '\n' or EOF. '\r' chars are removed.
1062 * '\n' is replaced with NUL.
1063 * Return number of characters read or 0 if nothing is read
1064 * ('\r' and '\n' are not counted).
1065 * Data is returned in iobuf.
1067 static int get_line(void)
1074 hdr_cnt = safe_read(STDIN_FILENO, hdr_buf, sizeof(hdr_buf));
1079 iobuf[count] = c = *hdr_ptr++;
1085 iobuf[count] = '\0';
1088 if (count < (IOBUF_SIZE - 1)) /* check overflow */
1094 #if ENABLE_FEATURE_HTTPD_CGI || ENABLE_FEATURE_HTTPD_PROXY
1096 /* gcc 4.2.1 fares better with NOINLINE */
1097 static NOINLINE void cgi_io_loop_and_exit(int fromCgi_rd, int toCgi_wr, int post_len) NORETURN;
1098 static NOINLINE void cgi_io_loop_and_exit(int fromCgi_rd, int toCgi_wr, int post_len)
1100 enum { FROM_CGI = 1, TO_CGI = 2 }; /* indexes in pfd[] */
1101 struct pollfd pfd[3];
1102 int out_cnt; /* we buffer a bit of initial CGI output */
1105 /* iobuf is used for CGI -> network data,
1106 * hdr_buf is for network -> CGI data (POSTDATA) */
1108 /* If CGI dies, we still want to correctly finish reading its output
1109 * and send it to the peer. So please no SIGPIPEs! */
1110 signal(SIGPIPE, SIG_IGN);
1112 // We inconsistently handle a case when more POSTDATA from network
1113 // is coming than we expected. We may give *some part* of that
1114 // extra data to CGI.
1116 //if (hdr_cnt > post_len) {
1117 // /* We got more POSTDATA from network than we expected */
1118 // hdr_cnt = post_len;
1120 post_len -= hdr_cnt;
1121 /* post_len - number of POST bytes not yet read from network */
1123 /* NB: breaking out of this loop jumps to log_and_exit() */
1126 memset(pfd, 0, sizeof(pfd));
1128 pfd[FROM_CGI].fd = fromCgi_rd;
1129 pfd[FROM_CGI].events = POLLIN;
1132 pfd[TO_CGI].fd = toCgi_wr;
1134 pfd[TO_CGI].events = POLLOUT;
1135 } else if (post_len > 0) {
1136 pfd[0].events = POLLIN;
1138 /* post_len <= 0 && hdr_cnt <= 0:
1139 * no more POST data to CGI,
1140 * let CGI see EOF on CGI's stdin */
1146 /* Now wait on the set of sockets */
1147 count = safe_poll(pfd, 3, -1);
1150 if (safe_waitpid(pid, &status, WNOHANG) <= 0) {
1151 /* Weird. CGI didn't exit and no fd's
1152 * are ready, yet poll returned?! */
1155 if (DEBUG && WIFEXITED(status))
1156 bb_error_msg("CGI exited, status=%d", WEXITSTATUS(status));
1157 if (DEBUG && WIFSIGNALED(status))
1158 bb_error_msg("CGI killed, signal=%d", WTERMSIG(status));
1163 if (pfd[TO_CGI].revents) {
1164 /* hdr_cnt > 0 here due to the way pfd[TO_CGI].events set */
1165 /* Have data from peer and can write to CGI */
1166 count = safe_write(toCgi_wr, hdr_ptr, hdr_cnt);
1167 /* Doesn't happen, we dont use nonblocking IO here
1168 *if (count < 0 && errno == EAGAIN) {
1175 /* EOF/broken pipe to CGI, stop piping POST data */
1176 hdr_cnt = post_len = 0;
1180 if (pfd[0].revents) {
1181 /* post_len > 0 && hdr_cnt == 0 here */
1182 /* We expect data, prev data portion is eaten by CGI
1183 * and there *is* data to read from the peer
1185 //count = post_len > (int)sizeof(hdr_buf) ? (int)sizeof(hdr_buf) : post_len;
1186 //count = safe_read(STDIN_FILENO, hdr_buf, count);
1187 count = safe_read(STDIN_FILENO, hdr_buf, sizeof(hdr_buf));
1193 /* no more POST data can be read */
1198 if (pfd[FROM_CGI].revents) {
1199 /* There is something to read from CGI */
1202 /* Are we still buffering CGI output? */
1204 /* HTTP_200[] has single "\r\n" at the end.
1205 * According to http://hoohoo.ncsa.uiuc.edu/cgi/out.html,
1206 * CGI scripts MUST send their own header terminated by
1207 * empty line, then data. That's why we have only one
1208 * <cr><lf> pair here. We will output "200 OK" line
1209 * if needed, but CGI still has to provide blank line
1210 * between header and body */
1212 /* Must use safe_read, not full_read, because
1213 * CGI may output a few first bytes and then wait
1214 * for POSTDATA without closing stdout.
1215 * With full_read we may wait here forever. */
1216 count = safe_read(fromCgi_rd, rbuf + out_cnt, PIPE_BUF - 8);
1218 /* eof (or error) and there was no "HTTP",
1219 * so write it, then write received data */
1221 full_write(STDOUT_FILENO, HTTP_200, sizeof(HTTP_200)-1);
1222 full_write(STDOUT_FILENO, rbuf, out_cnt);
1224 break; /* CGI stdout is closed, exiting */
1228 /* "Status" header format is: "Status: 302 Redirected\r\n" */
1229 if (out_cnt >= 8 && memcmp(rbuf, "Status: ", 8) == 0) {
1230 /* send "HTTP/1.0 " */
1231 if (full_write(STDOUT_FILENO, HTTP_200, 9) != 9)
1233 rbuf += 8; /* skip "Status: " */
1234 count = out_cnt - 8;
1235 out_cnt = -1; /* buffering off */
1236 } else if (out_cnt >= 4) {
1237 /* Did CGI add "HTTP"? */
1238 if (memcmp(rbuf, HTTP_200, 4) != 0) {
1239 /* there is no "HTTP", do it ourself */
1240 if (full_write(STDOUT_FILENO, HTTP_200, sizeof(HTTP_200)-1) != sizeof(HTTP_200)-1)
1244 if (!strstr(rbuf, "ontent-")) {
1245 full_write(s, "Content-type: text/plain\r\n\r\n", 28);
1247 * Counter-example of valid CGI without Content-type:
1248 * echo -en "HTTP/1.0 302 Found\r\n"
1249 * echo -en "Location: http://www.busybox.net\r\n"
1253 out_cnt = -1; /* buffering off */
1256 count = safe_read(fromCgi_rd, rbuf, PIPE_BUF);
1258 break; /* eof (or error) */
1260 if (full_write(STDOUT_FILENO, rbuf, count) != count)
1263 fprintf(stderr, "cgi read %d bytes: '%.*s'\n", count, count, rbuf);
1264 } /* if (pfd[FROM_CGI].revents) */
1270 #if ENABLE_FEATURE_HTTPD_CGI
1272 static void setenv1(const char *name, const char *value)
1274 setenv(name, value ? value : "", 1);
1278 * Spawn CGI script, forward CGI's stdin/out <=> network
1280 * Environment variables are set up and the script is invoked with pipes
1281 * for stdin/stdout. If a POST is being done the script is fed the POST
1282 * data in addition to setting the QUERY_STRING variable (for GETs or POSTs).
1285 * const char *url The requested URL (with leading /).
1286 * int post_len Length of the POST body.
1287 * const char *cookie For set HTTP_COOKIE.
1288 * const char *content_type For set CONTENT_TYPE.
1290 static void send_cgi_and_exit(
1292 const char *request,
1295 const char *content_type) NORETURN;
1296 static void send_cgi_and_exit(
1298 const char *request,
1301 const char *content_type)
1303 struct fd_pair fromCgi; /* CGI -> httpd pipe */
1304 struct fd_pair toCgi; /* httpd -> CGI pipe */
1308 /* Make a copy. NB: caller guarantees:
1309 * url[0] == '/', url[1] != '/' */
1313 * We are mucking with environment _first_ and then vfork/exec,
1314 * this allows us to use vfork safely. Parent doesn't care about
1315 * these environment changes anyway.
1318 /* Check for [dirs/]script.cgi/PATH_INFO */
1319 script = (char*)url;
1320 while ((script = strchr(script + 1, '/')) != NULL) {
1324 if (!is_directory(url + 1, 1, &sb)) {
1325 /* not directory, found script.cgi/PATH_INFO */
1329 *script = '/'; /* is directory, find next '/' */
1331 setenv1("PATH_INFO", script); /* set to /PATH_INFO or "" */
1332 setenv1("REQUEST_METHOD", request);
1334 putenv(xasprintf("%s=%s?%s", "REQUEST_URI", url, g_query));
1336 setenv1("REQUEST_URI", url);
1339 *script = '\0'; /* cut off /PATH_INFO */
1341 /* SCRIPT_FILENAME is required by PHP in CGI mode */
1342 if (home_httpd[0] == '/') {
1343 char *fullpath = concat_path_file(home_httpd, url);
1344 setenv1("SCRIPT_FILENAME", fullpath);
1346 /* set SCRIPT_NAME as full path: /cgi-bin/dirs/script.cgi */
1347 setenv1("SCRIPT_NAME", url);
1348 /* http://hoohoo.ncsa.uiuc.edu/cgi/env.html:
1349 * QUERY_STRING: The information which follows the ? in the URL
1350 * which referenced this script. This is the query information.
1351 * It should not be decoded in any fashion. This variable
1352 * should always be set when there is query information,
1353 * regardless of command line decoding. */
1354 /* (Older versions of bbox seem to do some decoding) */
1355 setenv1("QUERY_STRING", g_query);
1356 putenv((char*)"SERVER_SOFTWARE=busybox httpd/"BB_VER);
1357 putenv((char*)"SERVER_PROTOCOL=HTTP/1.0");
1358 putenv((char*)"GATEWAY_INTERFACE=CGI/1.1");
1359 /* Having _separate_ variables for IP and port defeats
1360 * the purpose of having socket abstraction. Which "port"
1361 * are you using on Unix domain socket?
1362 * IOW - REMOTE_PEER="1.2.3.4:56" makes much more sense.
1365 char *p = rmt_ip_str ? rmt_ip_str : (char*)"";
1366 char *cp = strrchr(p, ':');
1367 if (ENABLE_FEATURE_IPV6 && cp && strchr(cp, ']'))
1369 if (cp) *cp = '\0'; /* delete :PORT */
1370 setenv1("REMOTE_ADDR", p);
1373 #if ENABLE_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
1374 setenv1("REMOTE_PORT", cp + 1);
1378 setenv1("HTTP_USER_AGENT", user_agent);
1380 putenv(xasprintf("CONTENT_LENGTH=%d", post_len));
1382 setenv1("HTTP_COOKIE", cookie);
1384 setenv1("CONTENT_TYPE", content_type);
1385 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
1387 setenv1("REMOTE_USER", remoteuser);
1388 putenv((char*)"AUTH_TYPE=Basic");
1392 setenv1("HTTP_REFERER", referer);
1394 xpiped_pair(fromCgi);
1399 /* TODO: log perror? */
1407 xfunc_error_retval = 242;
1409 /* NB: close _first_, then move fds! */
1412 xmove_fd(toCgi.rd, 0); /* replace stdin with the pipe */
1413 xmove_fd(fromCgi.wr, 1); /* replace stdout with the pipe */
1414 /* User seeing stderr output can be a security problem.
1415 * If CGI really wants that, it can always do dup itself. */
1418 /* Chdiring to script's dir */
1419 script = strrchr(url, '/');
1420 if (script != url) { /* paranoia */
1422 if (chdir(url + 1) != 0) {
1423 bb_perror_msg("chdir %s", url + 1);
1424 goto error_execing_cgi;
1426 // not needed: *script = '/';
1430 /* set argv[0] to name without path */
1434 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
1436 char *suffix = strrchr(script, '.');
1440 for (cur = script_i; cur; cur = cur->next) {
1441 if (strcmp(cur->before_colon + 1, suffix) == 0) {
1442 /* found interpreter name */
1443 argv[0] = cur->after_colon;
1452 /* restore default signal dispositions for CGI process */
1459 /* _NOT_ execvp. We do not search PATH. argv[0] is a filename
1460 * without any dir components and will only match a file
1461 * in the current directory */
1462 execv(argv[0], argv);
1464 bb_perror_msg("exec %s", argv[0]);
1467 * (we are CGI here, our stdout is pumped to the net) */
1468 send_headers_and_exit(HTTP_NOT_FOUND);
1471 /* Parent process */
1473 /* Restore variables possibly changed by child */
1474 xfunc_error_retval = 0;
1479 cgi_io_loop_and_exit(fromCgi.rd, toCgi.wr, post_len);
1482 #endif /* FEATURE_HTTPD_CGI */
1485 * Send a file response to a HTTP request, and exit
1488 * const char *url The requested URL (with leading /).
1489 * what What to send (headers/body/both).
1491 static void send_file_and_exit(const char *url, int what)
1493 static const char *const suffixTable[] = {
1494 /* Warning: shorter equivalent suffix in one line must be first */
1495 ".htm.html", "text/html",
1496 ".jpg.jpeg", "image/jpeg",
1497 ".gif", "image/gif",
1498 ".png", "image/png",
1499 ".txt.h.c.cc.cpp", "text/plain",
1501 ".wav", "audio/wav",
1502 ".avi", "video/x-msvideo",
1503 ".qt.mov", "video/quicktime",
1504 ".mpe.mpeg", "video/mpeg",
1505 ".mid.midi", "audio/midi",
1506 ".mp3", "audio/mpeg",
1507 #if 0 /* unpopular */
1508 ".au", "audio/basic",
1509 ".pac", "application/x-ns-proxy-autoconfig",
1510 ".vrml.wrl", "model/vrml",
1517 const char *const *table;
1518 const char *try_suffix;
1520 #if ENABLE_FEATURE_HTTPD_USE_SENDFILE
1524 /* If you want to know about EPIPE below
1525 * (happens if you abort downloads from local httpd): */
1526 signal(SIGPIPE, SIG_IGN);
1528 suffix = strrchr(url, '.');
1530 /* If not found, set default as "application/octet-stream"; */
1531 found_mime_type = "application/octet-stream";
1533 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
1536 for (table = suffixTable; *table; table += 2) {
1537 try_suffix = strstr(table[0], suffix);
1539 try_suffix += strlen(suffix);
1540 if (*try_suffix == '\0' || *try_suffix == '.') {
1541 found_mime_type = table[1];
1546 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
1547 for (cur = mime_a; cur; cur = cur->next) {
1548 if (strcmp(cur->before_colon, suffix) == 0) {
1549 found_mime_type = cur->after_colon;
1557 bb_error_msg("sending file '%s' content-type: %s",
1558 url, found_mime_type);
1560 f = open(url, O_RDONLY);
1563 bb_perror_msg("cannot open '%s'", url);
1564 /* Error pages are sent by using send_file_and_exit(SEND_BODY).
1565 * IOW: it is unsafe to call send_headers_and_exit
1566 * if what is SEND_BODY! Can recurse! */
1567 if (what != SEND_BODY)
1568 send_headers_and_exit(HTTP_NOT_FOUND);
1571 #if ENABLE_FEATURE_HTTPD_RANGES
1572 if (what == SEND_BODY)
1573 range_start = 0; /* err pages and ranges don't mix */
1574 range_len = MAXINT(off_t);
1577 range_end = file_size - 1;
1579 if (range_end < range_start
1580 || lseek(f, range_start, SEEK_SET) != range_start
1582 lseek(f, 0, SEEK_SET);
1585 range_len = range_end - range_start + 1;
1586 send_headers(HTTP_PARTIAL_CONTENT);
1592 if (what & SEND_HEADERS)
1593 send_headers(HTTP_OK);
1595 #if ENABLE_FEATURE_HTTPD_USE_SENDFILE
1596 offset = range_start;
1598 /* sz is rounded down to 64k */
1599 ssize_t sz = MAXINT(ssize_t) - 0xffff;
1600 USE_FEATURE_HTTPD_RANGES(if (sz > range_len) sz = range_len;)
1601 count = sendfile(1, f, &offset, sz);
1603 if (offset == range_start)
1607 USE_FEATURE_HTTPD_RANGES(range_len -= sz;)
1608 } while (count > 0 && range_len);
1613 while ((count = safe_read(f, iobuf, IOBUF_SIZE)) > 0) {
1615 USE_FEATURE_HTTPD_RANGES(if (count > range_len) count = range_len;)
1616 n = full_write(STDOUT_FILENO, iobuf, count);
1619 USE_FEATURE_HTTPD_RANGES(range_len -= count;)
1623 #if ENABLE_FEATURE_HTTPD_USE_SENDFILE
1626 if (count < 0 && verbose > 1)
1627 bb_perror_msg("error");
1631 static int checkPermIP(void)
1635 for (cur = ip_a_d; cur; cur = cur->next) {
1638 "checkPermIP: '%s' ? '%u.%u.%u.%u/%u.%u.%u.%u'\n",
1640 (unsigned char)(cur->ip >> 24),
1641 (unsigned char)(cur->ip >> 16),
1642 (unsigned char)(cur->ip >> 8),
1643 (unsigned char)(cur->ip),
1644 (unsigned char)(cur->mask >> 24),
1645 (unsigned char)(cur->mask >> 16),
1646 (unsigned char)(cur->mask >> 8),
1647 (unsigned char)(cur->mask)
1650 if ((rmt_ip & cur->mask) == cur->ip)
1651 return (cur->allow_deny == 'A'); /* A -> 1 */
1654 return !flg_deny_all; /* depends on whether we saw "D:*" */
1657 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
1659 * Config file entries are of the form "/<path>:<user>:<passwd>".
1660 * If config file has no prefix match for path, access is allowed.
1662 * path The file path
1663 * user_and_passwd "user:passwd" to validate
1665 * Returns 1 if user_and_passwd is OK.
1667 static int check_user_passwd(const char *path, const char *user_and_passwd)
1670 const char *prev = NULL;
1672 for (cur = g_auth; cur; cur = cur->next) {
1673 const char *dir_prefix;
1676 dir_prefix = cur->before_colon;
1679 /* If already saw a match, don't accept other different matches */
1680 if (prev && strcmp(prev, dir_prefix) != 0)
1684 fprintf(stderr, "checkPerm: '%s' ? '%s'\n", dir_prefix, user_and_passwd);
1686 /* If it's not a prefix match, continue searching */
1687 len = strlen(dir_prefix);
1688 if (len != 1 /* dir_prefix "/" matches all, don't need to check */
1689 && (strncmp(dir_prefix, path, len) != 0
1690 || (path[len] != '/' && path[len] != '\0'))
1695 /* Path match found */
1698 if (ENABLE_FEATURE_HTTPD_AUTH_MD5) {
1701 md5_passwd = strchr(cur->after_colon, ':');
1702 if (md5_passwd && md5_passwd[1] == '$' && md5_passwd[2] == '1'
1703 && md5_passwd[3] == '$' && md5_passwd[4]
1709 user_len_p1 = md5_passwd - cur->after_colon;
1710 /* comparing "user:" */
1711 if (strncmp(cur->after_colon, user_and_passwd, user_len_p1) != 0) {
1715 encrypted = pw_encrypt(
1716 user_and_passwd + user_len_p1 /* cleartext pwd from user */,
1717 md5_passwd /*salt */, 1 /* cleanup */);
1718 r = strcmp(encrypted, md5_passwd);
1721 goto set_remoteuser_var; /* Ok */
1726 /* Comparing plaintext "user:pass" in one go */
1727 if (strcmp(cur->after_colon, user_and_passwd) == 0) {
1729 remoteuser = xstrndup(user_and_passwd,
1730 strchrnul(user_and_passwd, ':') - user_and_passwd);
1735 /* 0(bad) if prev is set: matches were found but passwd was wrong */
1736 return (prev == NULL);
1738 #endif /* FEATURE_HTTPD_BASIC_AUTH */
1740 #if ENABLE_FEATURE_HTTPD_PROXY
1741 static Htaccess_Proxy *find_proxy_entry(const char *url)
1744 for (p = proxy; p; p = p->next) {
1745 if (strncmp(url, p->url_from, strlen(p->url_from)) == 0)
1755 static void exit_on_signal(int sig) NORETURN;
1756 static void exit_on_signal(int sig UNUSED_PARAM)
1758 send_headers_and_exit(HTTP_REQUEST_TIMEOUT);
1762 * Handle an incoming http request and exit.
1764 static void handle_incoming_and_exit(const len_and_sockaddr *fromAddr) NORETURN;
1765 static void handle_incoming_and_exit(const len_and_sockaddr *fromAddr)
1767 static const char request_GET[] ALIGN1 = "GET";
1772 #if ENABLE_FEATURE_HTTPD_CGI
1773 static const char request_HEAD[] ALIGN1 = "HEAD";
1774 const char *prequest;
1775 char *cookie = NULL;
1776 char *content_type = NULL;
1777 unsigned long length = 0;
1778 #elif ENABLE_FEATURE_HTTPD_PROXY
1779 #define prequest request_GET
1780 unsigned long length = 0;
1782 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
1783 smallint authorized = -1;
1785 smallint ip_allowed;
1786 char http_major_version;
1787 #if ENABLE_FEATURE_HTTPD_PROXY
1788 char http_minor_version;
1789 char *header_buf = header_buf; /* for gcc */
1790 char *header_ptr = header_ptr;
1791 Htaccess_Proxy *proxy_entry;
1794 /* Allocation of iobuf is postponed until now
1795 * (IOW, server process doesn't need to waste 8k) */
1796 iobuf = xmalloc(IOBUF_SIZE);
1799 if (fromAddr->u.sa.sa_family == AF_INET) {
1800 rmt_ip = ntohl(fromAddr->u.sin.sin_addr.s_addr);
1802 #if ENABLE_FEATURE_IPV6
1803 if (fromAddr->u.sa.sa_family == AF_INET6
1804 && fromAddr->u.sin6.sin6_addr.s6_addr32[0] == 0
1805 && fromAddr->u.sin6.sin6_addr.s6_addr32[1] == 0
1806 && ntohl(fromAddr->u.sin6.sin6_addr.s6_addr32[2]) == 0xffff)
1807 rmt_ip = ntohl(fromAddr->u.sin6.sin6_addr.s6_addr32[3]);
1809 if (ENABLE_FEATURE_HTTPD_CGI || DEBUG || verbose) {
1810 /* NB: can be NULL (user runs httpd -i by hand?) */
1811 rmt_ip_str = xmalloc_sockaddr2dotted(&fromAddr->u.sa);
1814 /* this trick makes -v logging much simpler */
1816 applet_name = rmt_ip_str;
1818 bb_error_msg("connected");
1821 /* Install timeout handler */
1822 signal_no_SA_RESTART_empty_mask(SIGALRM, exit_on_signal);
1823 alarm(HEADER_READ_TIMEOUT);
1825 if (!get_line()) /* EOF or error or empty line */
1826 send_headers_and_exit(HTTP_BAD_REQUEST);
1828 /* Determine type of request (GET/POST) */
1829 urlp = strpbrk(iobuf, " \t");
1831 send_headers_and_exit(HTTP_BAD_REQUEST);
1833 #if ENABLE_FEATURE_HTTPD_CGI
1834 prequest = request_GET;
1835 if (strcasecmp(iobuf, prequest) != 0) {
1836 prequest = request_HEAD;
1837 if (strcasecmp(iobuf, prequest) != 0) {
1839 if (strcasecmp(iobuf, prequest) != 0)
1840 send_headers_and_exit(HTTP_NOT_IMPLEMENTED);
1844 if (strcasecmp(iobuf, request_GET) != 0)
1845 send_headers_and_exit(HTTP_NOT_IMPLEMENTED);
1847 urlp = skip_whitespace(urlp);
1849 send_headers_and_exit(HTTP_BAD_REQUEST);
1851 /* Find end of URL and parse HTTP version, if any */
1852 http_major_version = '0';
1853 USE_FEATURE_HTTPD_PROXY(http_minor_version = '0';)
1854 tptr = strchrnul(urlp, ' ');
1855 /* Is it " HTTP/"? */
1856 if (tptr[0] && strncmp(tptr + 1, HTTP_200, 5) == 0) {
1857 http_major_version = tptr[6];
1858 USE_FEATURE_HTTPD_PROXY(http_minor_version = tptr[8];)
1862 /* Copy URL from after "GET "/"POST " to stack-allocated char[] */
1863 urlcopy = alloca((tptr - urlp) + 2 + strlen(index_page));
1864 /*if (urlcopy == NULL)
1865 * send_headers_and_exit(HTTP_INTERNAL_SERVER_ERROR);*/
1866 strcpy(urlcopy, urlp);
1867 /* NB: urlcopy ptr is never changed after this */
1869 /* Extract url args if present */
1871 tptr = strchr(urlcopy, '?');
1877 /* Decode URL escape sequences */
1878 tptr = decodeString(urlcopy, 0);
1880 send_headers_and_exit(HTTP_BAD_REQUEST);
1881 if (tptr == urlcopy + 1) {
1882 /* '/' or NUL is encoded */
1883 send_headers_and_exit(HTTP_NOT_FOUND);
1886 /* Canonicalize path */
1887 /* Algorithm stolen from libbb bb_simplify_path(),
1888 * but don't strdup, retain trailing slash, protect root */
1889 urlp = tptr = urlcopy;
1892 /* skip duplicate (or initial) slash */
1897 /* skip extra "/./" */
1898 if (tptr[1] == '/' || !tptr[1]) {
1901 /* "..": be careful */
1902 if (tptr[1] == '.' && (tptr[2] == '/' || !tptr[2])) {
1904 if (urlp == urlcopy) /* protect root */
1905 send_headers_and_exit(HTTP_BAD_REQUEST);
1906 while (*--urlp != '/') /* omit previous dir */;
1913 *++urlp = '\0'; /* terminate after last character */
1915 /* If URL is a directory, add '/' */
1916 if (urlp[-1] != '/') {
1917 if (is_directory(urlcopy + 1, 1, &sb)) {
1918 found_moved_temporarily = urlcopy;
1924 bb_error_msg("url:%s", urlcopy);
1927 ip_allowed = checkPermIP();
1928 while (ip_allowed && (tptr = strchr(tptr + 1, '/')) != NULL) {
1929 /* have path1/path2 */
1931 if (is_directory(urlcopy + 1, 1, &sb)) {
1932 /* may have subdir config */
1933 parse_conf(urlcopy + 1, SUBDIR_PARSE);
1934 ip_allowed = checkPermIP();
1939 #if ENABLE_FEATURE_HTTPD_PROXY
1940 proxy_entry = find_proxy_entry(urlcopy);
1942 header_buf = header_ptr = xmalloc(IOBUF_SIZE);
1945 if (http_major_version >= '0') {
1946 /* Request was with "... HTTP/nXXX", and n >= 0 */
1948 /* Read until blank line for HTTP version specified, else parse immediate */
1950 alarm(HEADER_READ_TIMEOUT);
1952 break; /* EOF or error or empty line */
1954 bb_error_msg("header: '%s'", iobuf);
1956 #if ENABLE_FEATURE_HTTPD_PROXY
1957 /* We need 2 more bytes for yet another "\r\n" -
1958 * see near fdprintf(proxy_fd...) further below */
1959 if (proxy_entry && (header_ptr - header_buf) < IOBUF_SIZE - 2) {
1960 int len = strlen(iobuf);
1961 if (len > IOBUF_SIZE - (header_ptr - header_buf) - 4)
1962 len = IOBUF_SIZE - (header_ptr - header_buf) - 4;
1963 memcpy(header_ptr, iobuf, len);
1965 header_ptr[0] = '\r';
1966 header_ptr[1] = '\n';
1971 #if ENABLE_FEATURE_HTTPD_CGI || ENABLE_FEATURE_HTTPD_PROXY
1972 /* Try and do our best to parse more lines */
1973 if ((STRNCASECMP(iobuf, "Content-length:") == 0)) {
1974 /* extra read only for POST */
1975 if (prequest != request_GET
1976 #if ENABLE_FEATURE_HTTPD_CGI
1977 && prequest != request_HEAD
1980 tptr = skip_whitespace(iobuf + sizeof("Content-length:") - 1);
1982 send_headers_and_exit(HTTP_BAD_REQUEST);
1983 /* not using strtoul: it ignores leading minus! */
1984 length = bb_strtou(tptr, NULL, 10);
1985 /* length is "ulong", but we need to pass it to int later */
1986 if (errno || length > INT_MAX)
1987 send_headers_and_exit(HTTP_BAD_REQUEST);
1991 #if ENABLE_FEATURE_HTTPD_CGI
1992 else if (STRNCASECMP(iobuf, "Cookie:") == 0) {
1993 cookie = xstrdup(skip_whitespace(iobuf + sizeof("Cookie:")-1));
1994 } else if (STRNCASECMP(iobuf, "Content-Type:") == 0) {
1995 content_type = xstrdup(skip_whitespace(iobuf + sizeof("Content-Type:")-1));
1996 } else if (STRNCASECMP(iobuf, "Referer:") == 0) {
1997 referer = xstrdup(skip_whitespace(iobuf + sizeof("Referer:")-1));
1998 } else if (STRNCASECMP(iobuf, "User-Agent:") == 0) {
1999 user_agent = xstrdup(skip_whitespace(iobuf + sizeof("User-Agent:")-1));
2002 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
2003 if (STRNCASECMP(iobuf, "Authorization:") == 0) {
2004 /* We only allow Basic credentials.
2005 * It shows up as "Authorization: Basic <user>:<passwd>" where
2006 * "<user>:<passwd>" is base64 encoded.
2008 tptr = skip_whitespace(iobuf + sizeof("Authorization:")-1);
2009 if (STRNCASECMP(tptr, "Basic") != 0)
2011 tptr += sizeof("Basic")-1;
2012 /* decodeBase64() skips whitespace itself */
2014 authorized = check_user_passwd(urlcopy, tptr);
2017 #if ENABLE_FEATURE_HTTPD_RANGES
2018 if (STRNCASECMP(iobuf, "Range:") == 0) {
2019 /* We know only bytes=NNN-[MMM] */
2020 char *s = skip_whitespace(iobuf + sizeof("Range:")-1);
2021 if (strncmp(s, "bytes=", 6) == 0) {
2022 s += sizeof("bytes=")-1;
2023 range_start = BB_STRTOOFF(s, &s, 10);
2024 if (s[0] != '-' || range_start < 0) {
2027 range_end = BB_STRTOOFF(s+1, NULL, 10);
2028 if (errno || range_end < range_start)
2034 } /* while extra header reading */
2037 /* We are done reading headers, disable peer timeout */
2040 if (strcmp(bb_basename(urlcopy), httpd_conf) == 0 || !ip_allowed) {
2041 /* protect listing [/path]/httpd_conf or IP deny */
2042 send_headers_and_exit(HTTP_FORBIDDEN);
2045 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
2046 /* Case: no "Authorization:" was seen, but page does require passwd.
2047 * Check that with dummy user:pass */
2049 authorized = check_user_passwd(urlcopy, ":");
2051 send_headers_and_exit(HTTP_UNAUTHORIZED);
2054 if (found_moved_temporarily) {
2055 send_headers_and_exit(HTTP_MOVED_TEMPORARILY);
2058 #if ENABLE_FEATURE_HTTPD_PROXY
2059 if (proxy_entry != NULL) {
2061 len_and_sockaddr *lsa;
2063 proxy_fd = socket(AF_INET, SOCK_STREAM, 0);
2065 send_headers_and_exit(HTTP_INTERNAL_SERVER_ERROR);
2066 lsa = host2sockaddr(proxy_entry->host_port, 80);
2068 send_headers_and_exit(HTTP_INTERNAL_SERVER_ERROR);
2069 if (connect(proxy_fd, &lsa->u.sa, lsa->len) < 0)
2070 send_headers_and_exit(HTTP_INTERNAL_SERVER_ERROR);
2071 fdprintf(proxy_fd, "%s %s%s%s%s HTTP/%c.%c\r\n",
2072 prequest, /* GET or POST */
2073 proxy_entry->url_to, /* url part 1 */
2074 urlcopy + strlen(proxy_entry->url_from), /* url part 2 */
2075 (g_query ? "?" : ""), /* "?" (maybe) */
2076 (g_query ? g_query : ""), /* query string (maybe) */
2077 http_major_version, http_minor_version);
2078 header_ptr[0] = '\r';
2079 header_ptr[1] = '\n';
2081 write(proxy_fd, header_buf, header_ptr - header_buf);
2082 free(header_buf); /* on the order of 8k, free it */
2083 /* cgi_io_loop_and_exit needs to have two disctinct fds */
2084 cgi_io_loop_and_exit(proxy_fd, dup(proxy_fd), length);
2088 tptr = urlcopy + 1; /* skip first '/' */
2090 #if ENABLE_FEATURE_HTTPD_CGI
2091 if (strncmp(tptr, "cgi-bin/", 8) == 0) {
2092 if (tptr[8] == '\0') {
2093 /* protect listing "cgi-bin/" */
2094 send_headers_and_exit(HTTP_FORBIDDEN);
2096 send_cgi_and_exit(urlcopy, prequest, length, cookie, content_type);
2098 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
2100 char *suffix = strrchr(tptr, '.');
2103 for (cur = script_i; cur; cur = cur->next) {
2104 if (strcmp(cur->before_colon + 1, suffix) == 0) {
2105 send_cgi_and_exit(urlcopy, prequest, length, cookie, content_type);
2111 if (prequest != request_GET && prequest != request_HEAD) {
2112 send_headers_and_exit(HTTP_NOT_IMPLEMENTED);
2114 #endif /* FEATURE_HTTPD_CGI */
2116 if (urlp[-1] == '/')
2117 strcpy(urlp, index_page);
2118 if (stat(tptr, &sb) == 0) {
2119 file_size = sb.st_size;
2120 last_mod = sb.st_mtime;
2122 #if ENABLE_FEATURE_HTTPD_CGI
2123 else if (urlp[-1] == '/') {
2124 /* It's a dir URL and there is no index.html
2125 * Try cgi-bin/index.cgi */
2126 if (access("/cgi-bin/index.cgi"+1, X_OK) == 0) {
2129 send_cgi_and_exit("/cgi-bin/index.cgi", prequest, length, cookie, content_type);
2134 * fall through to send_file, it errors out if open fails
2138 send_file_and_exit(tptr,
2139 #if ENABLE_FEATURE_HTTPD_CGI
2140 (prequest != request_HEAD ? SEND_HEADERS_AND_BODY : SEND_HEADERS)
2142 SEND_HEADERS_AND_BODY
2148 * The main http server function.
2149 * Given a socket, listen for new connections and farm out
2150 * the processing as a [v]forked process.
2154 static void mini_httpd(int server_socket) NORETURN;
2155 static void mini_httpd(int server_socket)
2157 /* NB: it's best to not use xfuncs in this loop before fork().
2158 * Otherwise server may die on transient errors (temporary
2159 * out-of-memory condition, etc), which is Bad(tm).
2160 * Try to do any dangerous calls after fork.
2164 len_and_sockaddr fromAddr;
2166 /* Wait for connections... */
2167 fromAddr.len = LSA_SIZEOF_SA;
2168 n = accept(server_socket, &fromAddr.u.sa, &fromAddr.len);
2172 /* set the KEEPALIVE option to cull dead connections */
2173 setsockopt(n, SOL_SOCKET, SO_KEEPALIVE, &const_int_1, sizeof(const_int_1));
2177 #if ENABLE_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
2178 /* Do not reload config on HUP */
2179 signal(SIGHUP, SIG_IGN);
2181 close(server_socket);
2185 handle_incoming_and_exit(&fromAddr);
2187 /* parent, or fork failed */
2193 static void mini_httpd_nommu(int server_socket, int argc, char **argv) NORETURN;
2194 static void mini_httpd_nommu(int server_socket, int argc, char **argv)
2196 char *argv_copy[argc + 2];
2198 argv_copy[0] = argv[0];
2199 argv_copy[1] = (char*)"-i";
2200 memcpy(&argv_copy[2], &argv[1], argc * sizeof(argv[0]));
2202 /* NB: it's best to not use xfuncs in this loop before vfork().
2203 * Otherwise server may die on transient errors (temporary
2204 * out-of-memory condition, etc), which is Bad(tm).
2205 * Try to do any dangerous calls after fork.
2209 len_and_sockaddr fromAddr;
2211 /* Wait for connections... */
2212 fromAddr.len = LSA_SIZEOF_SA;
2213 n = accept(server_socket, &fromAddr.u.sa, &fromAddr.len);
2217 /* set the KEEPALIVE option to cull dead connections */
2218 setsockopt(n, SOL_SOCKET, SO_KEEPALIVE, &const_int_1, sizeof(const_int_1));
2222 #if ENABLE_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
2223 /* Do not reload config on HUP */
2224 signal(SIGHUP, SIG_IGN);
2226 close(server_socket);
2230 /* Run a copy of ourself in inetd mode */
2233 /* parent, or vfork failed */
2241 * Process a HTTP connection on stdin/out.
2244 static void mini_httpd_inetd(void) NORETURN;
2245 static void mini_httpd_inetd(void)
2247 len_and_sockaddr fromAddr;
2249 memset(&fromAddr, 0, sizeof(fromAddr));
2250 fromAddr.len = LSA_SIZEOF_SA;
2251 /* NB: can fail if user runs it by hand and types in http cmds */
2252 getpeername(0, &fromAddr.u.sa, &fromAddr.len);
2253 handle_incoming_and_exit(&fromAddr);
2256 #if ENABLE_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
2257 static void sighup_handler(int sig)
2259 parse_conf(default_path_httpd_conf, sig == SIGHUP ? SIGNALED_PARSE : FIRST_PARSE);
2261 signal_SA_RESTART_empty_mask(SIGHUP, sighup_handler);
2266 c_opt_config_file = 0,
2269 USE_FEATURE_HTTPD_ENCODE_URL_STR(e_opt_encode_url,)
2270 USE_FEATURE_HTTPD_BASIC_AUTH( r_opt_realm ,)
2271 USE_FEATURE_HTTPD_AUTH_MD5( m_opt_md5 ,)
2272 USE_FEATURE_HTTPD_SETUID( u_opt_setuid ,)
2277 OPT_CONFIG_FILE = 1 << c_opt_config_file,
2278 OPT_DECODE_URL = 1 << d_opt_decode_url,
2279 OPT_HOME_HTTPD = 1 << h_opt_home_httpd,
2280 OPT_ENCODE_URL = USE_FEATURE_HTTPD_ENCODE_URL_STR((1 << e_opt_encode_url)) + 0,
2281 OPT_REALM = USE_FEATURE_HTTPD_BASIC_AUTH( (1 << r_opt_realm )) + 0,
2282 OPT_MD5 = USE_FEATURE_HTTPD_AUTH_MD5( (1 << m_opt_md5 )) + 0,
2283 OPT_SETUID = USE_FEATURE_HTTPD_SETUID( (1 << u_opt_setuid )) + 0,
2284 OPT_PORT = 1 << p_opt_port,
2285 OPT_INETD = 1 << p_opt_inetd,
2286 OPT_FOREGROUND = 1 << p_opt_foreground,
2287 OPT_VERBOSE = 1 << p_opt_verbose,
2291 int httpd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
2292 int httpd_main(int argc UNUSED_PARAM, char **argv)
2294 int server_socket = server_socket; /* for gcc */
2296 char *url_for_decode;
2297 USE_FEATURE_HTTPD_ENCODE_URL_STR(const char *url_for_encode;)
2298 USE_FEATURE_HTTPD_SETUID(const char *s_ugid = NULL;)
2299 USE_FEATURE_HTTPD_SETUID(struct bb_uidgid_t ugid;)
2300 USE_FEATURE_HTTPD_AUTH_MD5(const char *pass;)
2304 #if ENABLE_LOCALE_SUPPORT
2305 /* Undo busybox.c: we want to speak English in http (dates etc) */
2306 setlocale(LC_TIME, "C");
2309 home_httpd = xrealloc_getcwd_or_warn(NULL);
2310 /* -v counts, -i implies -f */
2311 opt_complementary = "vv:if";
2312 /* We do not "absolutize" path given by -h (home) opt.
2313 * If user gives relative path in -h,
2314 * $SCRIPT_FILENAME will not be set. */
2315 opt = getopt32(argv, "c:d:h:"
2316 USE_FEATURE_HTTPD_ENCODE_URL_STR("e:")
2317 USE_FEATURE_HTTPD_BASIC_AUTH("r:")
2318 USE_FEATURE_HTTPD_AUTH_MD5("m:")
2319 USE_FEATURE_HTTPD_SETUID("u:")
2321 &configFile, &url_for_decode, &home_httpd
2322 USE_FEATURE_HTTPD_ENCODE_URL_STR(, &url_for_encode)
2323 USE_FEATURE_HTTPD_BASIC_AUTH(, &g_realm)
2324 USE_FEATURE_HTTPD_AUTH_MD5(, &pass)
2325 USE_FEATURE_HTTPD_SETUID(, &s_ugid)
2326 , &bind_addr_or_port
2329 if (opt & OPT_DECODE_URL) {
2330 fputs(decodeString(url_for_decode, 1), stdout);
2333 #if ENABLE_FEATURE_HTTPD_ENCODE_URL_STR
2334 if (opt & OPT_ENCODE_URL) {
2335 fputs(encodeString(url_for_encode), stdout);
2339 #if ENABLE_FEATURE_HTTPD_AUTH_MD5
2340 if (opt & OPT_MD5) {
2341 puts(pw_encrypt(pass, "$1$", 1));
2345 #if ENABLE_FEATURE_HTTPD_SETUID
2346 if (opt & OPT_SETUID) {
2347 if (!get_uidgid(&ugid, s_ugid, 1))
2348 bb_error_msg_and_die("unknown user[:group] "
2349 "name '%s'", s_ugid);
2354 if (!(opt & OPT_FOREGROUND)) {
2355 bb_daemonize_or_rexec(0, argv); /* don't change current directory */
2360 if (!(opt & OPT_INETD)) {
2361 signal(SIGCHLD, SIG_IGN);
2362 server_socket = openServer();
2363 #if ENABLE_FEATURE_HTTPD_SETUID
2364 /* drop privileges */
2365 if (opt & OPT_SETUID) {
2366 if (ugid.gid != (gid_t)-1) {
2367 if (setgroups(1, &ugid.gid) == -1)
2368 bb_perror_msg_and_die("setgroups");
2376 #if 0 /*was #if ENABLE_FEATURE_HTTPD_CGI*/
2377 /* User can do it himself: 'env - PATH="$PATH" httpd'
2378 * We don't do it because we don't want to screw users
2380 * 'env - VAR1=val1 VAR2=val2 httpd'
2381 * and have VAR1 and VAR2 values visible in their CGIs.
2382 * Besides, it is also smaller. */
2384 char *p = getenv("PATH");
2385 /* env strings themself are not freed, no need to xstrdup(p): */
2389 // if (!(opt & OPT_INETD))
2390 // setenv_long("SERVER_PORT", ???);
2394 #if ENABLE_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
2395 if (!(opt & OPT_INETD))
2398 parse_conf(default_path_httpd_conf, FIRST_PARSE);
2400 xfunc_error_retval = 0;
2401 if (opt & OPT_INETD)
2404 if (!(opt & OPT_FOREGROUND))
2405 bb_daemonize(0); /* don't change current directory */
2406 mini_httpd(server_socket); /* never returns */
2408 mini_httpd_nommu(server_socket, argc, argv); /* never returns */