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 * H:/serverroot # define the server root. It will override -h
41 * A:172.20. # Allow address from 172.20.0.0/16
42 * A:10.0.0.0/25 # Allow any address from 10.0.0.0-10.0.0.127
43 * A:10.0.0.0/255.255.255.128 # Allow any address that previous set
44 * A:127.0.0.1 # Allow local loopback connections
45 * D:* # Deny from other IP connections
46 * E404:/path/e404.html # /path/e404.html is the 404 (not found) error page
47 * I:index.html # Show index.html when a directory is requested
49 * P:/url:[http://]hostname[:port]/new/path
50 * # When /urlXXXXXX is requested, reverse proxy
51 * # it to http://hostname[:port]/new/pathXXXXXX
53 * /cgi-bin:foo:bar # Require user foo, pwd bar on urls starting with /cgi-bin/
54 * /adm:admin:setup # Require user admin, pwd setup on urls starting with /adm/
55 * /adm:toor:PaSsWd # or user toor, pwd PaSsWd on urls starting with /adm/
56 * .au:audio/basic # additional mime type for audio.au files
57 * *.php:/path/php # running cgi.php scripts through an interpreter
59 * A/D may be as a/d or allow/deny - only first char matters.
60 * Deny/Allow IP logic:
61 * - Default is to allow all (Allow all (A:*) is a no-op).
62 * - Deny rules take precedence over allow rules.
63 * - "Deny all" rule (D:*) is applied last.
66 * 1. Allow only specified addresses
67 * A:172.20 # Allow any address that begins with 172.20.
68 * A:10.10. # Allow any address that begins with 10.10.
69 * A:127.0.0.1 # Allow local loopback connections
70 * D:* # Deny from other IP connections
72 * 2. Only deny specified addresses
73 * D:1.2.3. # deny from 1.2.3.0 - 1.2.3.255
74 * D:2.3.4. # deny from 2.3.4.0 - 2.3.4.255
75 * A:* # (optional line added for clarity)
77 * If a sub directory contains a config file it is parsed and merged with
78 * any existing settings as if it was appended to the original configuration.
80 * subdir paths are relative to the containing subdir and thus cannot
81 * affect the parent rules.
83 * Note that since the sub dir is parsed in the forked thread servicing the
84 * subdir http request, any merge is discarded when the process exits. As a
85 * result, the subdir settings only have a lifetime of a single request.
87 * Custom error pages can contain an absolute path or be relative to
88 * 'home_httpd'. Error pages are to be static files (no CGI or script). Error
89 * page can only be defined in the root configuration file and are not taken
90 * into account in local (directories) config files.
92 * If -c is not set, an attempt will be made to open the default
93 * root configuration file. If -c is set and the file is not found, the
94 * server exits with an error.
99 #if ENABLE_FEATURE_HTTPD_USE_SENDFILE
100 #include <sys/sendfile.h>
106 #define IOBUF_SIZE 8192 /* IO buffer */
108 /* amount of buffering in a pipe */
110 # define PIPE_BUF 4096
112 #if PIPE_BUF >= IOBUF_SIZE
113 # error "PIPE_BUF >= IOBUF_SIZE"
116 #define HEADER_READ_TIMEOUT 60
118 static const char default_path_httpd_conf[] ALIGN1 = "/etc";
119 static const char httpd_conf[] ALIGN1 = "httpd.conf";
120 static const char HTTP_200[] ALIGN1 = "HTTP/1.0 200 OK\r\n";
122 typedef struct has_next_ptr {
123 struct has_next_ptr *next;
126 /* Must have "next" as a first member */
127 typedef struct Htaccess {
128 struct Htaccess *next;
130 char before_colon[1]; /* really bigger, must be last */
133 /* Must have "next" as a first member */
134 typedef struct Htaccess_IP {
135 struct Htaccess_IP *next;
141 /* Must have "next" as a first member */
142 typedef struct Htaccess_Proxy {
143 struct Htaccess_Proxy *next;
151 HTTP_PARTIAL_CONTENT = 206,
152 HTTP_MOVED_TEMPORARILY = 302,
153 HTTP_BAD_REQUEST = 400, /* malformed syntax */
154 HTTP_UNAUTHORIZED = 401, /* authentication needed, respond with auth hdr */
155 HTTP_NOT_FOUND = 404,
156 HTTP_FORBIDDEN = 403,
157 HTTP_REQUEST_TIMEOUT = 408,
158 HTTP_NOT_IMPLEMENTED = 501, /* used for unrecognized requests */
159 HTTP_INTERNAL_SERVER_ERROR = 500,
161 #if 0 /* future use */
162 HTTP_SWITCHING_PROTOCOLS = 101,
165 HTTP_NON_AUTHORITATIVE_INFO = 203,
166 HTTP_NO_CONTENT = 204,
167 HTTP_MULTIPLE_CHOICES = 300,
168 HTTP_MOVED_PERMANENTLY = 301,
169 HTTP_NOT_MODIFIED = 304,
170 HTTP_PAYMENT_REQUIRED = 402,
171 HTTP_BAD_GATEWAY = 502,
172 HTTP_SERVICE_UNAVAILABLE = 503, /* overload, maintenance */
173 HTTP_RESPONSE_SETSIZE = 0xffffffff
177 static const uint16_t http_response_type[] ALIGN2 = {
179 #if ENABLE_FEATURE_HTTPD_RANGES
180 HTTP_PARTIAL_CONTENT,
182 HTTP_MOVED_TEMPORARILY,
183 HTTP_REQUEST_TIMEOUT,
184 HTTP_NOT_IMPLEMENTED,
185 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
191 HTTP_INTERNAL_SERVER_ERROR,
192 #if 0 /* not implemented */
196 HTTP_MULTIPLE_CHOICES,
197 HTTP_MOVED_PERMANENTLY,
200 HTTP_SERVICE_UNAVAILABLE,
204 static const struct {
207 } http_response[ARRAY_SIZE(http_response_type)] = {
209 #if ENABLE_FEATURE_HTTPD_RANGES
210 { "Partial Content", NULL },
213 { "Request Timeout", "No request appeared within 60 seconds" },
214 { "Not Implemented", "The requested method is not recognized" },
215 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
216 { "Unauthorized", "" },
218 { "Not Found", "The requested URL was not found" },
219 { "Bad Request", "Unsupported method" },
221 { "Internal Server Error", "Internal Server Error" },
222 #if 0 /* not implemented */
226 { "Multiple Choices" },
227 { "Moved Permanently" },
229 { "Bad Gateway", "" },
230 { "Service Unavailable", "" },
236 int verbose; /* must be int (used by getopt32) */
237 smallint flg_deny_all;
239 unsigned rmt_ip; /* used for IP-based allow/deny rules */
241 char *rmt_ip_str; /* for $REMOTE_ADDR and $REMOTE_PORT */
242 const char *bind_addr_or_port;
245 const char *configFile;
246 const char *home_httpd;
247 const char *index_page;
249 const char *found_mime_type;
250 const char *found_moved_temporarily;
251 Htaccess_IP *ip_a_d; /* config allow/deny lines */
253 USE_FEATURE_HTTPD_BASIC_AUTH(const char *g_realm;)
254 USE_FEATURE_HTTPD_BASIC_AUTH(char *remoteuser;)
255 USE_FEATURE_HTTPD_CGI(char *referer;)
256 USE_FEATURE_HTTPD_CGI(char *user_agent;)
258 off_t file_size; /* -1 - unknown */
259 #if ENABLE_FEATURE_HTTPD_RANGES
265 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
266 Htaccess *g_auth; /* config user:password lines */
268 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
269 Htaccess *mime_a; /* config mime types */
271 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
272 Htaccess *script_i; /* config script interpreters */
274 char *iobuf; /* [IOBUF_SIZE] */
275 #define hdr_buf bb_common_bufsiz1
278 #if ENABLE_FEATURE_HTTPD_ERROR_PAGES
279 const char *http_error_page[ARRAY_SIZE(http_response_type)];
281 #if ENABLE_FEATURE_HTTPD_PROXY
282 Htaccess_Proxy *proxy;
285 #define G (*ptr_to_globals)
286 #define verbose (G.verbose )
287 #define flg_deny_all (G.flg_deny_all )
288 #define rmt_ip (G.rmt_ip )
289 #define bind_addr_or_port (G.bind_addr_or_port)
290 #define g_query (G.g_query )
291 #define configFile (G.configFile )
292 #define home_httpd (G.home_httpd )
293 #define index_page (G.index_page )
294 #define found_mime_type (G.found_mime_type )
295 #define found_moved_temporarily (G.found_moved_temporarily)
296 #define last_mod (G.last_mod )
297 #define ip_a_d (G.ip_a_d )
298 #define g_realm (G.g_realm )
299 #define remoteuser (G.remoteuser )
300 #define referer (G.referer )
301 #define user_agent (G.user_agent )
302 #define file_size (G.file_size )
303 #if ENABLE_FEATURE_HTTPD_RANGES
304 #define range_start (G.range_start )
305 #define range_end (G.range_end )
306 #define range_len (G.range_len )
308 #define rmt_ip_str (G.rmt_ip_str )
309 #define g_auth (G.g_auth )
310 #define mime_a (G.mime_a )
311 #define script_i (G.script_i )
312 #define iobuf (G.iobuf )
313 #define hdr_ptr (G.hdr_ptr )
314 #define hdr_cnt (G.hdr_cnt )
315 #define http_error_page (G.http_error_page )
316 #define proxy (G.proxy )
317 #define INIT_G() do { \
318 SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
319 USE_FEATURE_HTTPD_BASIC_AUTH(g_realm = "Web Server Authentication";) \
320 bind_addr_or_port = "80"; \
321 index_page = "index.html"; \
325 #if !ENABLE_FEATURE_HTTPD_RANGES
328 range_end = MAXINT(off_t) - 1,
329 range_len = MAXINT(off_t),
334 #define STRNCASECMP(a, str) strncasecmp((a), (str), sizeof(str)-1)
338 SEND_HEADERS = (1 << 0),
339 SEND_BODY = (1 << 1),
340 SEND_HEADERS_AND_BODY = SEND_HEADERS + SEND_BODY,
342 static void send_file_and_exit(const char *url, int what) NORETURN;
344 static void free_llist(has_next_ptr **pptr)
346 has_next_ptr *cur = *pptr;
348 has_next_ptr *t = cur;
355 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH \
356 || ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES \
357 || ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
358 static ALWAYS_INLINE void free_Htaccess_list(Htaccess **pptr)
360 free_llist((has_next_ptr**)pptr);
364 static ALWAYS_INLINE void free_Htaccess_IP_list(Htaccess_IP **pptr)
366 free_llist((has_next_ptr**)pptr);
369 /* Returns presumed mask width in bits or < 0 on error.
370 * Updates strp, stores IP at provided pointer */
371 static int scan_ip(const char **strp, unsigned *ipp, unsigned char endc)
373 const char *p = *strp;
381 for (j = 0; j < 4; j++) {
384 if ((*p < '0' || *p > '9') && *p != '/' && *p)
387 while (*p >= '0' && *p <= '9') {
398 ip = (ip << 8) | octet;
412 /* Returns 0 on success. Stores IP and mask at provided pointers */
413 static int scan_ip_mask(const char *str, unsigned *ipp, unsigned *maskp)
419 i = scan_ip(&str, ipp, '/');
424 /* there is /xxx after dotted-IP address */
425 i = bb_strtou(str, &p, 10);
427 /* 'xxx' itself is dotted-IP mask, parse it */
428 /* (return 0 (success) only if it has N.N.N.N form) */
429 return scan_ip(&str, maskp, '\0') - 32;
438 if (sizeof(unsigned) == 4 && i == 32) {
439 /* mask >>= 32 below may not work */
445 /* i == 0 -> *maskp = 0x00000000
446 * i == 1 -> *maskp = 0x80000000
447 * i == 4 -> *maskp = 0xf0000000
448 * i == 31 -> *maskp = 0xfffffffe
449 * i == 32 -> *maskp = 0xffffffff */
450 *maskp = (uint32_t)(~mask);
455 * Parse configuration file into in-memory linked list.
457 * The first non-white character is examined to determine if the config line
458 * is one of the following:
459 * .ext:mime/type # new mime type not compiled into httpd
460 * [adAD]:from # ip address allow/deny, * for wildcard
461 * /path:user:pass # username/password
462 * Ennn:error.html # error page for status nnn
463 * P:/url:[http://]hostname[:port]/new/path # reverse proxy
465 * Any previous IP rules are discarded.
466 * If the flag argument is not SUBDIR_PARSE then all /path and mime rules
467 * are also discarded. That is, previous settings are retained if flag is
469 * Error pages are only parsed on the main config file.
471 * path Path where to look for httpd.conf (without filename).
472 * flag Type of the parse request.
475 #define FIRST_PARSE 0
476 #define SUBDIR_PARSE 1
477 #define SIGNALED_PARSE 2
478 #define FIND_FROM_HTTPD_ROOT 3
479 static void parse_conf(const char *path, int flag)
482 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
485 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH \
486 || ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES \
487 || ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
490 const char *filename = configFile;
496 /* discard old rules */
497 free_Htaccess_IP_list(&ip_a_d);
499 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH \
500 || ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES \
501 || ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
502 /* retain previous auth and mime config only for subdir parse */
503 if (flag != SUBDIR_PARSE) {
504 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
505 free_Htaccess_list(&g_auth);
507 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
508 free_Htaccess_list(&mime_a);
510 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
511 free_Htaccess_list(&script_i);
516 if (flag == SUBDIR_PARSE || filename == NULL) {
517 filename = alloca(strlen(path) + sizeof(httpd_conf) + 2);
518 sprintf((char *)filename, "%s/%s", path, httpd_conf);
521 while ((f = fopen(filename, "r")) == NULL) {
522 if (flag == SUBDIR_PARSE || flag == FIND_FROM_HTTPD_ROOT) {
523 /* config file not found, no changes to config */
526 if (configFile && flag == FIRST_PARSE) /* if -c option given */
527 bb_simple_perror_msg_and_die(filename);
528 flag = FIND_FROM_HTTPD_ROOT;
529 filename = httpd_conf;
532 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
535 /* This could stand some work */
536 while ((p0 = fgets(buf, sizeof(buf), f)) != NULL) {
538 for (p = p0; *p0 != '\0' && *p0 != '#'; p0++) {
541 if (*p0 == ':' && after_colon == NULL)
547 /* test for empty or strange line */
548 if (after_colon == NULL || *after_colon == '\0')
551 if (*p0 == 'd' || *p0 == 'a')
552 *p0 -= 0x20; /* a/d -> A/D */
553 if (*after_colon == '*') {
555 /* memorize "deny all" */
558 /* skip assumed "A:*", it is a default anyway */
562 if (*p0 == 'A' || *p0 == 'D') {
563 /* storing current config IP line */
564 pip = xzalloc(sizeof(Htaccess_IP));
565 if (scan_ip_mask(after_colon, &(pip->ip), &(pip->mask))) {
566 /* IP{/mask} syntax error detected, protect all */
570 pip->allow_deny = *p0;
572 /* Deny:from_IP - prepend */
576 /* A:from_IP - append (thus D precedes A) */
577 Htaccess_IP *prev_IP = ip_a_d;
578 if (prev_IP == NULL) {
581 while (prev_IP->next)
582 prev_IP = prev_IP->next;
589 #if ENABLE_FEATURE_HTTPD_ERROR_PAGES
590 if (flag == FIRST_PARSE && *p0 == 'E') {
592 int status = atoi(++p0); /* error status code */
593 if (status < HTTP_CONTINUE) {
594 bb_error_msg("config error '%s' in '%s'", buf, filename);
597 /* then error page; find matching status */
598 for (i = 0; i < ARRAY_SIZE(http_response_type); i++) {
599 if (http_response_type[i] == status) {
600 /* We chdir to home_httpd, thus no need to
601 * concat_path_file(home_httpd, after_colon)
603 http_error_page[i] = xstrdup(after_colon);
611 #if ENABLE_FEATURE_HTTPD_PROXY
612 if (flag == FIRST_PARSE && *p0 == 'P') {
613 /* P:/url:[http://]hostname[:port]/new/path */
614 char *url_from, *host_port, *url_to;
615 Htaccess_Proxy *proxy_entry;
617 url_from = after_colon;
618 host_port = strchr(after_colon, ':');
619 if (host_port == NULL) {
620 bb_error_msg("config error '%s' in '%s'", buf, filename);
624 if (strncmp(host_port, "http://", 7) == 0)
626 if (*host_port == '\0') {
627 bb_error_msg("config error '%s' in '%s'", buf, filename);
630 url_to = strchr(host_port, '/');
631 if (url_to == NULL) {
632 bb_error_msg("config error '%s' in '%s'", buf, filename);
636 proxy_entry = xzalloc(sizeof(Htaccess_Proxy));
637 proxy_entry->url_from = xstrdup(url_from);
638 proxy_entry->host_port = xstrdup(host_port);
640 proxy_entry->url_to = xstrdup(url_to);
641 proxy_entry->next = proxy;
647 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
649 /* make full path from httpd root / current_path / config_line_path */
650 const char *tp = (flag == SUBDIR_PARSE ? path : "");
651 p0 = xmalloc(strlen(tp) + (after_colon - buf) + 2 + strlen(after_colon));
652 after_colon[-1] = '\0';
653 sprintf(p0, "/%s%s", tp, buf);
655 /* looks like bb_simplify_path... */
659 if (*tp == '/') { /* skip duplicate (or initial) slash */
663 if (tp[1] == '/' || tp[1] == '\0') { /* remove extra '.' */
666 if ((tp[1] == '.') && (tp[2] == '/' || tp[2] == '\0')) {
669 while (*--p != '/') /* omit previous dir */
679 if ((p == p0) || (*p != '/')) { /* not a trailing slash */
680 ++p; /* so keep last character */
683 strcpy(p + 1, after_colon);
687 index_page = xstrdup(after_colon);
691 /* Do not allow jumping around using H in subdir's configs */
692 if (flag == FIRST_PARSE && *p0 == 'H') {
693 home_httpd = xstrdup(after_colon);
698 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH \
699 || ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES \
700 || ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
701 /* storing current config line */
702 cur = xzalloc(sizeof(Htaccess) + strlen(p0));
703 strcpy(cur->before_colon, p0);
704 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
705 if (*p0 == '/') /* was malloced - see above */
708 cur->after_colon = strchr(cur->before_colon, ':');
709 *cur->after_colon++ = '\0';
710 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
711 if (cur->before_colon[0] == '.') {
712 /* .mime line: prepend to mime_a list */
718 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
719 if (cur->before_colon[0] == '*' && cur->before_colon[1] == '.') {
720 /* script interpreter line: prepend to script_i list */
721 cur->next = script_i;
726 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
727 //TODO: we do not test for leading "/"??
728 //also, do we leak cur if BASIC_AUTH is off?
733 /* sort path, if current length eq or bigger then move up */
734 Htaccess *prev_hti = g_auth;
735 size_t l = strlen(cur->before_colon);
738 for (hti = prev_hti; hti; hti = hti->next) {
739 if (l >= strlen(hti->before_colon)) {
740 /* insert before hti */
742 if (prev_hti != hti) {
743 prev_hti->next = cur;
751 prev_hti = prev_hti->next;
753 if (!hti) { /* not inserted, add to bottom */
758 #endif /* BASIC_AUTH */
759 #endif /* BASIC_AUTH || MIME_TYPES || SCRIPT_INTERPR */
760 } /* while (fgets) */
764 #if ENABLE_FEATURE_HTTPD_ENCODE_URL_STR
766 * Given a string, html-encode special characters.
767 * This is used for the -e command line option to provide an easy way
768 * for scripts to encode result data without confusing browsers. The
769 * returned string pointer is memory allocated by malloc().
771 * Returns a pointer to the encoded string (malloced).
773 static char *encodeString(const char *string)
775 /* take the simple route and encode everything */
776 /* could possibly scan once to get length. */
777 int len = strlen(string);
778 char *out = xmalloc(len * 6 + 1);
782 while ((ch = *string++)) {
783 /* very simple check for what to encode */
787 p += sprintf(p, "&#%d;", (unsigned char) ch);
792 #endif /* FEATURE_HTTPD_ENCODE_URL_STR */
795 * Given a URL encoded string, convert it to plain ascii.
796 * Since decoding always makes strings smaller, the decode is done in-place.
797 * Thus, callers should xstrdup() the argument if they do not want the
798 * argument modified. The return is the original pointer, allowing this
799 * function to be easily used as arguments to other functions.
801 * string The first string to decode.
802 * option_d 1 if called for httpd -d
804 * Returns a pointer to the decoded string (same as input).
806 static unsigned hex_to_bin(unsigned char c)
813 /* c | 0x20: letters to lower case, non-letters
814 * to (potentially different) non-letters */
815 v = (unsigned)(c | 0x20) - 'a';
821 void t(char c) { printf("'%c'(%u) %u\n", c, c, hex_to_bin(c)); }
822 int main() { t(0x10); t(0x20); t('0'); t('9'); t('A'); t('F'); t('a'); t('f');
823 t('0'-1); t('9'+1); t('A'-1); t('F'+1); t('a'-1); t('f'+1); return 0; }
825 static char *decodeString(char *orig, int option_d)
827 /* note that decoded string is always shorter than original */
832 while ((c = *ptr++) != '\0') {
835 if (option_d && c == '+') {
843 v = hex_to_bin(ptr[0]);
851 v = (v * 16) | hex_to_bin(ptr[1]);
854 if (!option_d && (v == '/' || v == '\0')) {
855 /* caller takes it as indication of invalid
856 * (dangerous wrt exploits) chars */
866 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
868 * Decode a base64 data stream as per rfc1521.
869 * Note that the rfc states that non base64 chars are to be ignored.
870 * Since the decode always results in a shorter size than the input,
871 * it is OK to pass the input arg as an output arg.
872 * Parameter: a pointer to a base64 encoded string.
873 * Decoded data is stored in-place.
875 static void decodeBase64(char *Data)
877 const unsigned char *in = (const unsigned char *)Data;
878 /* The decoded size will be at most 3/4 the size of the encoded */
885 if (t >= '0' && t <= '9')
887 else if (t >= 'A' && t <= 'Z')
889 else if (t >= 'a' && t <= 'z')
903 *Data++ = (char) (ch >> 16);
904 *Data++ = (char) (ch >> 8);
914 * Create a listen server socket on the designated port.
916 static int openServer(void)
918 unsigned n = bb_strtou(bind_addr_or_port, NULL, 10);
919 if (!errno && n && n <= 0xffff)
920 n = create_and_bind_stream_or_die(NULL, n);
922 n = create_and_bind_stream_or_die(bind_addr_or_port, 80);
928 * Log the connection closure and exit.
930 static void log_and_exit(void) NORETURN;
931 static void log_and_exit(void)
933 /* Paranoia. IE said to be buggy. It may send some extra data
934 * or be confused by us just exiting without SHUT_WR. Oh well. */
935 shutdown(1, SHUT_WR);
937 (this also messes up stdin when user runs httpd -i from terminal)
939 while (read(STDIN_FILENO, iobuf, IOBUF_SIZE) > 0)
944 bb_error_msg("closed");
945 _exit(xfunc_error_retval);
949 * Create and send HTTP response headers.
950 * The arguments are combined and sent as one write operation. Note that
951 * IE will puke big-time if the headers are not sent in one packet and the
952 * second packet is delayed for any reason.
953 * responseNum - the result code to send.
955 static void send_headers(int responseNum)
957 static const char RFC1123FMT[] ALIGN1 = "%a, %d %b %Y %H:%M:%S GMT";
959 const char *responseString = "";
960 const char *infoString = NULL;
961 const char *mime_type;
962 #if ENABLE_FEATURE_HTTPD_ERROR_PAGES
963 const char *error_page = NULL;
966 time_t timer = time(0);
970 for (i = 0; i < ARRAY_SIZE(http_response_type); i++) {
971 if (http_response_type[i] == responseNum) {
972 responseString = http_response[i].name;
973 infoString = http_response[i].info;
974 #if ENABLE_FEATURE_HTTPD_ERROR_PAGES
975 error_page = http_error_page[i];
980 /* error message is HTML */
981 mime_type = responseNum == HTTP_OK ?
982 found_mime_type : "text/html";
985 bb_error_msg("response:%u", responseNum);
987 /* emit the current date */
988 strftime(tmp_str, sizeof(tmp_str), RFC1123FMT, gmtime(&timer));
990 "HTTP/1.0 %d %s\r\nContent-type: %s\r\n"
991 "Date: %s\r\nConnection: close\r\n",
992 responseNum, responseString, mime_type, tmp_str);
994 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
995 if (responseNum == HTTP_UNAUTHORIZED) {
996 len += sprintf(iobuf + len,
997 "WWW-Authenticate: Basic realm=\"%s\"\r\n",
1001 if (responseNum == HTTP_MOVED_TEMPORARILY) {
1002 len += sprintf(iobuf + len, "Location: %s/%s%s\r\n",
1003 found_moved_temporarily,
1004 (g_query ? "?" : ""),
1005 (g_query ? g_query : ""));
1008 #if ENABLE_FEATURE_HTTPD_ERROR_PAGES
1009 if (error_page && access(error_page, R_OK) == 0) {
1010 strcat(iobuf, "\r\n");
1014 fprintf(stderr, "headers: '%s'\n", iobuf);
1015 full_write(STDOUT_FILENO, iobuf, len);
1017 fprintf(stderr, "writing error page: '%s'\n", error_page);
1018 return send_file_and_exit(error_page, SEND_BODY);
1022 if (file_size != -1) { /* file */
1023 strftime(tmp_str, sizeof(tmp_str), RFC1123FMT, gmtime(&last_mod));
1024 #if ENABLE_FEATURE_HTTPD_RANGES
1025 if (responseNum == HTTP_PARTIAL_CONTENT) {
1026 len += sprintf(iobuf + len, "Content-Range: bytes %"OFF_FMT"d-%"OFF_FMT"d/%"OFF_FMT"d\r\n",
1030 file_size = range_end - range_start + 1;
1033 len += sprintf(iobuf + len,
1034 #if ENABLE_FEATURE_HTTPD_RANGES
1035 "Accept-Ranges: bytes\r\n"
1037 "Last-Modified: %s\r\n%s %"OFF_FMT"d\r\n",
1043 iobuf[len++] = '\r';
1044 iobuf[len++] = '\n';
1046 len += sprintf(iobuf + len,
1047 "<HTML><HEAD><TITLE>%d %s</TITLE></HEAD>\n"
1048 "<BODY><H1>%d %s</H1>\n%s\n</BODY></HTML>\n",
1049 responseNum, responseString,
1050 responseNum, responseString, infoString);
1053 fprintf(stderr, "headers: '%s'\n", iobuf);
1054 if (full_write(STDOUT_FILENO, iobuf, len) != len) {
1056 bb_perror_msg("error");
1061 static void send_headers_and_exit(int responseNum) NORETURN;
1062 static void send_headers_and_exit(int responseNum)
1064 send_headers(responseNum);
1069 * Read from the socket until '\n' or EOF. '\r' chars are removed.
1070 * '\n' is replaced with NUL.
1071 * Return number of characters read or 0 if nothing is read
1072 * ('\r' and '\n' are not counted).
1073 * Data is returned in iobuf.
1075 static int get_line(void)
1082 hdr_cnt = safe_read(STDIN_FILENO, hdr_buf, sizeof(hdr_buf));
1087 iobuf[count] = c = *hdr_ptr++;
1093 iobuf[count] = '\0';
1096 if (count < (IOBUF_SIZE - 1)) /* check overflow */
1102 #if ENABLE_FEATURE_HTTPD_CGI || ENABLE_FEATURE_HTTPD_PROXY
1104 /* gcc 4.2.1 fares better with NOINLINE */
1105 static NOINLINE void cgi_io_loop_and_exit(int fromCgi_rd, int toCgi_wr, int post_len) NORETURN;
1106 static NOINLINE void cgi_io_loop_and_exit(int fromCgi_rd, int toCgi_wr, int post_len)
1108 enum { FROM_CGI = 1, TO_CGI = 2 }; /* indexes in pfd[] */
1109 struct pollfd pfd[3];
1110 int out_cnt; /* we buffer a bit of initial CGI output */
1113 /* iobuf is used for CGI -> network data,
1114 * hdr_buf is for network -> CGI data (POSTDATA) */
1116 /* If CGI dies, we still want to correctly finish reading its output
1117 * and send it to the peer. So please no SIGPIPEs! */
1118 signal(SIGPIPE, SIG_IGN);
1120 // We inconsistently handle a case when more POSTDATA from network
1121 // is coming than we expected. We may give *some part* of that
1122 // extra data to CGI.
1124 //if (hdr_cnt > post_len) {
1125 // /* We got more POSTDATA from network than we expected */
1126 // hdr_cnt = post_len;
1128 post_len -= hdr_cnt;
1129 /* post_len - number of POST bytes not yet read from network */
1131 /* NB: breaking out of this loop jumps to log_and_exit() */
1134 memset(pfd, 0, sizeof(pfd));
1136 pfd[FROM_CGI].fd = fromCgi_rd;
1137 pfd[FROM_CGI].events = POLLIN;
1140 pfd[TO_CGI].fd = toCgi_wr;
1142 pfd[TO_CGI].events = POLLOUT;
1143 } else if (post_len > 0) {
1144 pfd[0].events = POLLIN;
1146 /* post_len <= 0 && hdr_cnt <= 0:
1147 * no more POST data to CGI,
1148 * let CGI see EOF on CGI's stdin */
1154 /* Now wait on the set of sockets */
1155 count = safe_poll(pfd, 3, -1);
1158 if (safe_waitpid(pid, &status, WNOHANG) <= 0) {
1159 /* Weird. CGI didn't exit and no fd's
1160 * are ready, yet poll returned?! */
1163 if (DEBUG && WIFEXITED(status))
1164 bb_error_msg("CGI exited, status=%d", WEXITSTATUS(status));
1165 if (DEBUG && WIFSIGNALED(status))
1166 bb_error_msg("CGI killed, signal=%d", WTERMSIG(status));
1171 if (pfd[TO_CGI].revents) {
1172 /* hdr_cnt > 0 here due to the way pfd[TO_CGI].events set */
1173 /* Have data from peer and can write to CGI */
1174 count = safe_write(toCgi_wr, hdr_ptr, hdr_cnt);
1175 /* Doesn't happen, we dont use nonblocking IO here
1176 *if (count < 0 && errno == EAGAIN) {
1183 /* EOF/broken pipe to CGI, stop piping POST data */
1184 hdr_cnt = post_len = 0;
1188 if (pfd[0].revents) {
1189 /* post_len > 0 && hdr_cnt == 0 here */
1190 /* We expect data, prev data portion is eaten by CGI
1191 * and there *is* data to read from the peer
1193 //count = post_len > (int)sizeof(hdr_buf) ? (int)sizeof(hdr_buf) : post_len;
1194 //count = safe_read(STDIN_FILENO, hdr_buf, count);
1195 count = safe_read(STDIN_FILENO, hdr_buf, sizeof(hdr_buf));
1201 /* no more POST data can be read */
1206 if (pfd[FROM_CGI].revents) {
1207 /* There is something to read from CGI */
1210 /* Are we still buffering CGI output? */
1212 /* HTTP_200[] has single "\r\n" at the end.
1213 * According to http://hoohoo.ncsa.uiuc.edu/cgi/out.html,
1214 * CGI scripts MUST send their own header terminated by
1215 * empty line, then data. That's why we have only one
1216 * <cr><lf> pair here. We will output "200 OK" line
1217 * if needed, but CGI still has to provide blank line
1218 * between header and body */
1220 /* Must use safe_read, not full_read, because
1221 * CGI may output a few first bytes and then wait
1222 * for POSTDATA without closing stdout.
1223 * With full_read we may wait here forever. */
1224 count = safe_read(fromCgi_rd, rbuf + out_cnt, PIPE_BUF - 8);
1226 /* eof (or error) and there was no "HTTP",
1227 * so write it, then write received data */
1229 full_write(STDOUT_FILENO, HTTP_200, sizeof(HTTP_200)-1);
1230 full_write(STDOUT_FILENO, rbuf, out_cnt);
1232 break; /* CGI stdout is closed, exiting */
1236 /* "Status" header format is: "Status: 302 Redirected\r\n" */
1237 if (out_cnt >= 8 && memcmp(rbuf, "Status: ", 8) == 0) {
1238 /* send "HTTP/1.0 " */
1239 if (full_write(STDOUT_FILENO, HTTP_200, 9) != 9)
1241 rbuf += 8; /* skip "Status: " */
1242 count = out_cnt - 8;
1243 out_cnt = -1; /* buffering off */
1244 } else if (out_cnt >= 4) {
1245 /* Did CGI add "HTTP"? */
1246 if (memcmp(rbuf, HTTP_200, 4) != 0) {
1247 /* there is no "HTTP", do it ourself */
1248 if (full_write(STDOUT_FILENO, HTTP_200, sizeof(HTTP_200)-1) != sizeof(HTTP_200)-1)
1252 if (!strstr(rbuf, "ontent-")) {
1253 full_write(s, "Content-type: text/plain\r\n\r\n", 28);
1255 * Counter-example of valid CGI without Content-type:
1256 * echo -en "HTTP/1.0 302 Found\r\n"
1257 * echo -en "Location: http://www.busybox.net\r\n"
1261 out_cnt = -1; /* buffering off */
1264 count = safe_read(fromCgi_rd, rbuf, PIPE_BUF);
1266 break; /* eof (or error) */
1268 if (full_write(STDOUT_FILENO, rbuf, count) != count)
1271 fprintf(stderr, "cgi read %d bytes: '%.*s'\n", count, count, rbuf);
1272 } /* if (pfd[FROM_CGI].revents) */
1278 #if ENABLE_FEATURE_HTTPD_CGI
1280 static void setenv1(const char *name, const char *value)
1282 setenv(name, value ? value : "", 1);
1286 * Spawn CGI script, forward CGI's stdin/out <=> network
1288 * Environment variables are set up and the script is invoked with pipes
1289 * for stdin/stdout. If a POST is being done the script is fed the POST
1290 * data in addition to setting the QUERY_STRING variable (for GETs or POSTs).
1293 * const char *url The requested URL (with leading /).
1294 * int post_len Length of the POST body.
1295 * const char *cookie For set HTTP_COOKIE.
1296 * const char *content_type For set CONTENT_TYPE.
1298 static void send_cgi_and_exit(
1300 const char *request,
1303 const char *content_type) NORETURN;
1304 static void send_cgi_and_exit(
1306 const char *request,
1309 const char *content_type)
1311 struct fd_pair fromCgi; /* CGI -> httpd pipe */
1312 struct fd_pair toCgi; /* httpd -> CGI pipe */
1316 /* Make a copy. NB: caller guarantees:
1317 * url[0] == '/', url[1] != '/' */
1321 * We are mucking with environment _first_ and then vfork/exec,
1322 * this allows us to use vfork safely. Parent doesn't care about
1323 * these environment changes anyway.
1326 /* Check for [dirs/]script.cgi/PATH_INFO */
1327 script = (char*)url;
1328 while ((script = strchr(script + 1, '/')) != NULL) {
1332 if (!is_directory(url + 1, 1, &sb)) {
1333 /* not directory, found script.cgi/PATH_INFO */
1337 *script = '/'; /* is directory, find next '/' */
1339 setenv1("PATH_INFO", script); /* set to /PATH_INFO or "" */
1340 setenv1("REQUEST_METHOD", request);
1342 putenv(xasprintf("%s=%s?%s", "REQUEST_URI", url, g_query));
1344 setenv1("REQUEST_URI", url);
1347 *script = '\0'; /* cut off /PATH_INFO */
1349 /* SCRIPT_FILENAME is required by PHP in CGI mode */
1350 if (home_httpd[0] == '/') {
1351 char *fullpath = concat_path_file(home_httpd, url);
1352 setenv1("SCRIPT_FILENAME", fullpath);
1354 /* set SCRIPT_NAME as full path: /cgi-bin/dirs/script.cgi */
1355 setenv1("SCRIPT_NAME", url);
1356 /* http://hoohoo.ncsa.uiuc.edu/cgi/env.html:
1357 * QUERY_STRING: The information which follows the ? in the URL
1358 * which referenced this script. This is the query information.
1359 * It should not be decoded in any fashion. This variable
1360 * should always be set when there is query information,
1361 * regardless of command line decoding. */
1362 /* (Older versions of bbox seem to do some decoding) */
1363 setenv1("QUERY_STRING", g_query);
1364 putenv((char*)"SERVER_SOFTWARE=busybox httpd/"BB_VER);
1365 putenv((char*)"SERVER_PROTOCOL=HTTP/1.0");
1366 putenv((char*)"GATEWAY_INTERFACE=CGI/1.1");
1367 /* Having _separate_ variables for IP and port defeats
1368 * the purpose of having socket abstraction. Which "port"
1369 * are you using on Unix domain socket?
1370 * IOW - REMOTE_PEER="1.2.3.4:56" makes much more sense.
1373 char *p = rmt_ip_str ? rmt_ip_str : (char*)"";
1374 char *cp = strrchr(p, ':');
1375 if (ENABLE_FEATURE_IPV6 && cp && strchr(cp, ']'))
1377 if (cp) *cp = '\0'; /* delete :PORT */
1378 setenv1("REMOTE_ADDR", p);
1381 #if ENABLE_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
1382 setenv1("REMOTE_PORT", cp + 1);
1386 setenv1("HTTP_USER_AGENT", user_agent);
1388 putenv(xasprintf("CONTENT_LENGTH=%d", post_len));
1390 setenv1("HTTP_COOKIE", cookie);
1392 setenv1("CONTENT_TYPE", content_type);
1393 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
1395 setenv1("REMOTE_USER", remoteuser);
1396 putenv((char*)"AUTH_TYPE=Basic");
1400 setenv1("HTTP_REFERER", referer);
1402 xpiped_pair(fromCgi);
1407 /* TODO: log perror? */
1415 xfunc_error_retval = 242;
1417 /* NB: close _first_, then move fds! */
1420 xmove_fd(toCgi.rd, 0); /* replace stdin with the pipe */
1421 xmove_fd(fromCgi.wr, 1); /* replace stdout with the pipe */
1422 /* User seeing stderr output can be a security problem.
1423 * If CGI really wants that, it can always do dup itself. */
1426 /* Chdiring to script's dir */
1427 script = strrchr(url, '/');
1428 if (script != url) { /* paranoia */
1430 if (chdir(url + 1) != 0) {
1431 bb_perror_msg("chdir %s", url + 1);
1432 goto error_execing_cgi;
1434 // not needed: *script = '/';
1438 /* set argv[0] to name without path */
1442 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
1444 char *suffix = strrchr(script, '.');
1448 for (cur = script_i; cur; cur = cur->next) {
1449 if (strcmp(cur->before_colon + 1, suffix) == 0) {
1450 /* found interpreter name */
1451 argv[0] = cur->after_colon;
1460 /* restore default signal dispositions for CGI process */
1467 /* _NOT_ execvp. We do not search PATH. argv[0] is a filename
1468 * without any dir components and will only match a file
1469 * in the current directory */
1470 execv(argv[0], argv);
1472 bb_perror_msg("exec %s", argv[0]);
1475 * (we are CGI here, our stdout is pumped to the net) */
1476 send_headers_and_exit(HTTP_NOT_FOUND);
1479 /* Parent process */
1481 /* Restore variables possibly changed by child */
1482 xfunc_error_retval = 0;
1487 cgi_io_loop_and_exit(fromCgi.rd, toCgi.wr, post_len);
1490 #endif /* FEATURE_HTTPD_CGI */
1493 * Send a file response to a HTTP request, and exit
1496 * const char *url The requested URL (with leading /).
1497 * what What to send (headers/body/both).
1499 static void send_file_and_exit(const char *url, int what)
1501 static const char *const suffixTable[] = {
1502 /* Warning: shorter equivalent suffix in one line must be first */
1503 ".htm.html", "text/html",
1504 ".jpg.jpeg", "image/jpeg",
1505 ".gif", "image/gif",
1506 ".png", "image/png",
1507 ".txt.h.c.cc.cpp", "text/plain",
1509 ".wav", "audio/wav",
1510 ".avi", "video/x-msvideo",
1511 ".qt.mov", "video/quicktime",
1512 ".mpe.mpeg", "video/mpeg",
1513 ".mid.midi", "audio/midi",
1514 ".mp3", "audio/mpeg",
1515 #if 0 /* unpopular */
1516 ".au", "audio/basic",
1517 ".pac", "application/x-ns-proxy-autoconfig",
1518 ".vrml.wrl", "model/vrml",
1525 const char *const *table;
1526 const char *try_suffix;
1528 #if ENABLE_FEATURE_HTTPD_USE_SENDFILE
1532 /* If you want to know about EPIPE below
1533 * (happens if you abort downloads from local httpd): */
1534 signal(SIGPIPE, SIG_IGN);
1536 suffix = strrchr(url, '.');
1538 /* If not found, set default as "application/octet-stream"; */
1539 found_mime_type = "application/octet-stream";
1541 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
1544 for (table = suffixTable; *table; table += 2) {
1545 try_suffix = strstr(table[0], suffix);
1547 try_suffix += strlen(suffix);
1548 if (*try_suffix == '\0' || *try_suffix == '.') {
1549 found_mime_type = table[1];
1554 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
1555 for (cur = mime_a; cur; cur = cur->next) {
1556 if (strcmp(cur->before_colon, suffix) == 0) {
1557 found_mime_type = cur->after_colon;
1565 bb_error_msg("sending file '%s' content-type: %s",
1566 url, found_mime_type);
1568 f = open(url, O_RDONLY);
1571 bb_perror_msg("can't open '%s'", url);
1572 /* Error pages are sent by using send_file_and_exit(SEND_BODY).
1573 * IOW: it is unsafe to call send_headers_and_exit
1574 * if what is SEND_BODY! Can recurse! */
1575 if (what != SEND_BODY)
1576 send_headers_and_exit(HTTP_NOT_FOUND);
1579 #if ENABLE_FEATURE_HTTPD_RANGES
1580 if (what == SEND_BODY)
1581 range_start = 0; /* err pages and ranges don't mix */
1582 range_len = MAXINT(off_t);
1585 range_end = file_size - 1;
1587 if (range_end < range_start
1588 || lseek(f, range_start, SEEK_SET) != range_start
1590 lseek(f, 0, SEEK_SET);
1593 range_len = range_end - range_start + 1;
1594 send_headers(HTTP_PARTIAL_CONTENT);
1600 if (what & SEND_HEADERS)
1601 send_headers(HTTP_OK);
1603 #if ENABLE_FEATURE_HTTPD_USE_SENDFILE
1604 offset = range_start;
1606 /* sz is rounded down to 64k */
1607 ssize_t sz = MAXINT(ssize_t) - 0xffff;
1608 USE_FEATURE_HTTPD_RANGES(if (sz > range_len) sz = range_len;)
1609 count = sendfile(1, f, &offset, sz);
1611 if (offset == range_start)
1615 USE_FEATURE_HTTPD_RANGES(range_len -= sz;)
1616 } while (count > 0 && range_len);
1621 while ((count = safe_read(f, iobuf, IOBUF_SIZE)) > 0) {
1623 USE_FEATURE_HTTPD_RANGES(if (count > range_len) count = range_len;)
1624 n = full_write(STDOUT_FILENO, iobuf, count);
1627 USE_FEATURE_HTTPD_RANGES(range_len -= count;)
1631 #if ENABLE_FEATURE_HTTPD_USE_SENDFILE
1634 if (count < 0 && verbose > 1)
1635 bb_perror_msg("error");
1639 static int checkPermIP(void)
1643 for (cur = ip_a_d; cur; cur = cur->next) {
1646 "checkPermIP: '%s' ? '%u.%u.%u.%u/%u.%u.%u.%u'\n",
1648 (unsigned char)(cur->ip >> 24),
1649 (unsigned char)(cur->ip >> 16),
1650 (unsigned char)(cur->ip >> 8),
1651 (unsigned char)(cur->ip),
1652 (unsigned char)(cur->mask >> 24),
1653 (unsigned char)(cur->mask >> 16),
1654 (unsigned char)(cur->mask >> 8),
1655 (unsigned char)(cur->mask)
1658 if ((rmt_ip & cur->mask) == cur->ip)
1659 return (cur->allow_deny == 'A'); /* A -> 1 */
1662 return !flg_deny_all; /* depends on whether we saw "D:*" */
1665 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
1667 * Config file entries are of the form "/<path>:<user>:<passwd>".
1668 * If config file has no prefix match for path, access is allowed.
1670 * path The file path
1671 * user_and_passwd "user:passwd" to validate
1673 * Returns 1 if user_and_passwd is OK.
1675 static int check_user_passwd(const char *path, const char *user_and_passwd)
1678 const char *prev = NULL;
1680 for (cur = g_auth; cur; cur = cur->next) {
1681 const char *dir_prefix;
1684 dir_prefix = cur->before_colon;
1687 /* If already saw a match, don't accept other different matches */
1688 if (prev && strcmp(prev, dir_prefix) != 0)
1692 fprintf(stderr, "checkPerm: '%s' ? '%s'\n", dir_prefix, user_and_passwd);
1694 /* If it's not a prefix match, continue searching */
1695 len = strlen(dir_prefix);
1696 if (len != 1 /* dir_prefix "/" matches all, don't need to check */
1697 && (strncmp(dir_prefix, path, len) != 0
1698 || (path[len] != '/' && path[len] != '\0'))
1703 /* Path match found */
1706 if (ENABLE_FEATURE_HTTPD_AUTH_MD5) {
1709 md5_passwd = strchr(cur->after_colon, ':');
1710 if (md5_passwd && md5_passwd[1] == '$' && md5_passwd[2] == '1'
1711 && md5_passwd[3] == '$' && md5_passwd[4]
1717 user_len_p1 = md5_passwd - cur->after_colon;
1718 /* comparing "user:" */
1719 if (strncmp(cur->after_colon, user_and_passwd, user_len_p1) != 0) {
1723 encrypted = pw_encrypt(
1724 user_and_passwd + user_len_p1 /* cleartext pwd from user */,
1725 md5_passwd /*salt */, 1 /* cleanup */);
1726 r = strcmp(encrypted, md5_passwd);
1729 goto set_remoteuser_var; /* Ok */
1734 /* Comparing plaintext "user:pass" in one go */
1735 if (strcmp(cur->after_colon, user_and_passwd) == 0) {
1737 remoteuser = xstrndup(user_and_passwd,
1738 strchrnul(user_and_passwd, ':') - user_and_passwd);
1743 /* 0(bad) if prev is set: matches were found but passwd was wrong */
1744 return (prev == NULL);
1746 #endif /* FEATURE_HTTPD_BASIC_AUTH */
1748 #if ENABLE_FEATURE_HTTPD_PROXY
1749 static Htaccess_Proxy *find_proxy_entry(const char *url)
1752 for (p = proxy; p; p = p->next) {
1753 if (strncmp(url, p->url_from, strlen(p->url_from)) == 0)
1763 static void exit_on_signal(int sig) NORETURN;
1764 static void exit_on_signal(int sig UNUSED_PARAM)
1766 send_headers_and_exit(HTTP_REQUEST_TIMEOUT);
1770 * Handle an incoming http request and exit.
1772 static void handle_incoming_and_exit(const len_and_sockaddr *fromAddr) NORETURN;
1773 static void handle_incoming_and_exit(const len_and_sockaddr *fromAddr)
1775 static const char request_GET[] ALIGN1 = "GET";
1780 #if ENABLE_FEATURE_HTTPD_CGI
1781 static const char request_HEAD[] ALIGN1 = "HEAD";
1782 const char *prequest;
1783 char *cookie = NULL;
1784 char *content_type = NULL;
1785 unsigned long length = 0;
1786 #elif ENABLE_FEATURE_HTTPD_PROXY
1787 #define prequest request_GET
1788 unsigned long length = 0;
1790 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
1791 smallint authorized = -1;
1793 smallint ip_allowed;
1794 char http_major_version;
1795 #if ENABLE_FEATURE_HTTPD_PROXY
1796 char http_minor_version;
1797 char *header_buf = header_buf; /* for gcc */
1798 char *header_ptr = header_ptr;
1799 Htaccess_Proxy *proxy_entry;
1802 /* Allocation of iobuf is postponed until now
1803 * (IOW, server process doesn't need to waste 8k) */
1804 iobuf = xmalloc(IOBUF_SIZE);
1807 if (fromAddr->u.sa.sa_family == AF_INET) {
1808 rmt_ip = ntohl(fromAddr->u.sin.sin_addr.s_addr);
1810 #if ENABLE_FEATURE_IPV6
1811 if (fromAddr->u.sa.sa_family == AF_INET6
1812 && fromAddr->u.sin6.sin6_addr.s6_addr32[0] == 0
1813 && fromAddr->u.sin6.sin6_addr.s6_addr32[1] == 0
1814 && ntohl(fromAddr->u.sin6.sin6_addr.s6_addr32[2]) == 0xffff)
1815 rmt_ip = ntohl(fromAddr->u.sin6.sin6_addr.s6_addr32[3]);
1817 if (ENABLE_FEATURE_HTTPD_CGI || DEBUG || verbose) {
1818 /* NB: can be NULL (user runs httpd -i by hand?) */
1819 rmt_ip_str = xmalloc_sockaddr2dotted(&fromAddr->u.sa);
1822 /* this trick makes -v logging much simpler */
1824 applet_name = rmt_ip_str;
1826 bb_error_msg("connected");
1829 /* Install timeout handler */
1830 signal_no_SA_RESTART_empty_mask(SIGALRM, exit_on_signal);
1831 alarm(HEADER_READ_TIMEOUT);
1833 if (!get_line()) /* EOF or error or empty line */
1834 send_headers_and_exit(HTTP_BAD_REQUEST);
1836 /* Determine type of request (GET/POST) */
1837 urlp = strpbrk(iobuf, " \t");
1839 send_headers_and_exit(HTTP_BAD_REQUEST);
1841 #if ENABLE_FEATURE_HTTPD_CGI
1842 prequest = request_GET;
1843 if (strcasecmp(iobuf, prequest) != 0) {
1844 prequest = request_HEAD;
1845 if (strcasecmp(iobuf, prequest) != 0) {
1847 if (strcasecmp(iobuf, prequest) != 0)
1848 send_headers_and_exit(HTTP_NOT_IMPLEMENTED);
1852 if (strcasecmp(iobuf, request_GET) != 0)
1853 send_headers_and_exit(HTTP_NOT_IMPLEMENTED);
1855 urlp = skip_whitespace(urlp);
1857 send_headers_and_exit(HTTP_BAD_REQUEST);
1859 /* Find end of URL and parse HTTP version, if any */
1860 http_major_version = '0';
1861 USE_FEATURE_HTTPD_PROXY(http_minor_version = '0';)
1862 tptr = strchrnul(urlp, ' ');
1863 /* Is it " HTTP/"? */
1864 if (tptr[0] && strncmp(tptr + 1, HTTP_200, 5) == 0) {
1865 http_major_version = tptr[6];
1866 USE_FEATURE_HTTPD_PROXY(http_minor_version = tptr[8];)
1870 /* Copy URL from after "GET "/"POST " to stack-allocated char[] */
1871 urlcopy = alloca((tptr - urlp) + 2 + strlen(index_page));
1872 /*if (urlcopy == NULL)
1873 * send_headers_and_exit(HTTP_INTERNAL_SERVER_ERROR);*/
1874 strcpy(urlcopy, urlp);
1875 /* NB: urlcopy ptr is never changed after this */
1877 /* Extract url args if present */
1879 tptr = strchr(urlcopy, '?');
1885 /* Decode URL escape sequences */
1886 tptr = decodeString(urlcopy, 0);
1888 send_headers_and_exit(HTTP_BAD_REQUEST);
1889 if (tptr == urlcopy + 1) {
1890 /* '/' or NUL is encoded */
1891 send_headers_and_exit(HTTP_NOT_FOUND);
1894 /* Canonicalize path */
1895 /* Algorithm stolen from libbb bb_simplify_path(),
1896 * but don't strdup, retain trailing slash, protect root */
1897 urlp = tptr = urlcopy;
1900 /* skip duplicate (or initial) slash */
1905 /* skip extra "/./" */
1906 if (tptr[1] == '/' || !tptr[1]) {
1909 /* "..": be careful */
1910 if (tptr[1] == '.' && (tptr[2] == '/' || !tptr[2])) {
1912 if (urlp == urlcopy) /* protect root */
1913 send_headers_and_exit(HTTP_BAD_REQUEST);
1914 while (*--urlp != '/') /* omit previous dir */;
1921 *++urlp = '\0'; /* terminate after last character */
1923 /* If URL is a directory, add '/' */
1924 if (urlp[-1] != '/') {
1925 if (is_directory(urlcopy + 1, 1, &sb)) {
1926 found_moved_temporarily = urlcopy;
1932 bb_error_msg("url:%s", urlcopy);
1935 ip_allowed = checkPermIP();
1936 while (ip_allowed && (tptr = strchr(tptr + 1, '/')) != NULL) {
1937 /* have path1/path2 */
1939 if (is_directory(urlcopy + 1, 1, &sb)) {
1940 /* may have subdir config */
1941 parse_conf(urlcopy + 1, SUBDIR_PARSE);
1942 ip_allowed = checkPermIP();
1947 #if ENABLE_FEATURE_HTTPD_PROXY
1948 proxy_entry = find_proxy_entry(urlcopy);
1950 header_buf = header_ptr = xmalloc(IOBUF_SIZE);
1953 if (http_major_version >= '0') {
1954 /* Request was with "... HTTP/nXXX", and n >= 0 */
1956 /* Read until blank line for HTTP version specified, else parse immediate */
1958 alarm(HEADER_READ_TIMEOUT);
1960 break; /* EOF or error or empty line */
1962 bb_error_msg("header: '%s'", iobuf);
1964 #if ENABLE_FEATURE_HTTPD_PROXY
1965 /* We need 2 more bytes for yet another "\r\n" -
1966 * see near fdprintf(proxy_fd...) further below */
1967 if (proxy_entry && (header_ptr - header_buf) < IOBUF_SIZE - 2) {
1968 int len = strlen(iobuf);
1969 if (len > IOBUF_SIZE - (header_ptr - header_buf) - 4)
1970 len = IOBUF_SIZE - (header_ptr - header_buf) - 4;
1971 memcpy(header_ptr, iobuf, len);
1973 header_ptr[0] = '\r';
1974 header_ptr[1] = '\n';
1979 #if ENABLE_FEATURE_HTTPD_CGI || ENABLE_FEATURE_HTTPD_PROXY
1980 /* Try and do our best to parse more lines */
1981 if ((STRNCASECMP(iobuf, "Content-length:") == 0)) {
1982 /* extra read only for POST */
1983 if (prequest != request_GET
1984 #if ENABLE_FEATURE_HTTPD_CGI
1985 && prequest != request_HEAD
1988 tptr = skip_whitespace(iobuf + sizeof("Content-length:") - 1);
1990 send_headers_and_exit(HTTP_BAD_REQUEST);
1991 /* not using strtoul: it ignores leading minus! */
1992 length = bb_strtou(tptr, NULL, 10);
1993 /* length is "ulong", but we need to pass it to int later */
1994 if (errno || length > INT_MAX)
1995 send_headers_and_exit(HTTP_BAD_REQUEST);
1999 #if ENABLE_FEATURE_HTTPD_CGI
2000 else if (STRNCASECMP(iobuf, "Cookie:") == 0) {
2001 cookie = xstrdup(skip_whitespace(iobuf + sizeof("Cookie:")-1));
2002 } else if (STRNCASECMP(iobuf, "Content-Type:") == 0) {
2003 content_type = xstrdup(skip_whitespace(iobuf + sizeof("Content-Type:")-1));
2004 } else if (STRNCASECMP(iobuf, "Referer:") == 0) {
2005 referer = xstrdup(skip_whitespace(iobuf + sizeof("Referer:")-1));
2006 } else if (STRNCASECMP(iobuf, "User-Agent:") == 0) {
2007 user_agent = xstrdup(skip_whitespace(iobuf + sizeof("User-Agent:")-1));
2010 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
2011 if (STRNCASECMP(iobuf, "Authorization:") == 0) {
2012 /* We only allow Basic credentials.
2013 * It shows up as "Authorization: Basic <user>:<passwd>" where
2014 * "<user>:<passwd>" is base64 encoded.
2016 tptr = skip_whitespace(iobuf + sizeof("Authorization:")-1);
2017 if (STRNCASECMP(tptr, "Basic") != 0)
2019 tptr += sizeof("Basic")-1;
2020 /* decodeBase64() skips whitespace itself */
2022 authorized = check_user_passwd(urlcopy, tptr);
2025 #if ENABLE_FEATURE_HTTPD_RANGES
2026 if (STRNCASECMP(iobuf, "Range:") == 0) {
2027 /* We know only bytes=NNN-[MMM] */
2028 char *s = skip_whitespace(iobuf + sizeof("Range:")-1);
2029 if (strncmp(s, "bytes=", 6) == 0) {
2030 s += sizeof("bytes=")-1;
2031 range_start = BB_STRTOOFF(s, &s, 10);
2032 if (s[0] != '-' || range_start < 0) {
2035 range_end = BB_STRTOOFF(s+1, NULL, 10);
2036 if (errno || range_end < range_start)
2042 } /* while extra header reading */
2045 /* We are done reading headers, disable peer timeout */
2048 if (strcmp(bb_basename(urlcopy), httpd_conf) == 0 || !ip_allowed) {
2049 /* protect listing [/path]/httpd_conf or IP deny */
2050 send_headers_and_exit(HTTP_FORBIDDEN);
2053 #if ENABLE_FEATURE_HTTPD_BASIC_AUTH
2054 /* Case: no "Authorization:" was seen, but page does require passwd.
2055 * Check that with dummy user:pass */
2057 authorized = check_user_passwd(urlcopy, ":");
2059 send_headers_and_exit(HTTP_UNAUTHORIZED);
2062 if (found_moved_temporarily) {
2063 send_headers_and_exit(HTTP_MOVED_TEMPORARILY);
2066 #if ENABLE_FEATURE_HTTPD_PROXY
2067 if (proxy_entry != NULL) {
2069 len_and_sockaddr *lsa;
2071 proxy_fd = socket(AF_INET, SOCK_STREAM, 0);
2073 send_headers_and_exit(HTTP_INTERNAL_SERVER_ERROR);
2074 lsa = host2sockaddr(proxy_entry->host_port, 80);
2076 send_headers_and_exit(HTTP_INTERNAL_SERVER_ERROR);
2077 if (connect(proxy_fd, &lsa->u.sa, lsa->len) < 0)
2078 send_headers_and_exit(HTTP_INTERNAL_SERVER_ERROR);
2079 fdprintf(proxy_fd, "%s %s%s%s%s HTTP/%c.%c\r\n",
2080 prequest, /* GET or POST */
2081 proxy_entry->url_to, /* url part 1 */
2082 urlcopy + strlen(proxy_entry->url_from), /* url part 2 */
2083 (g_query ? "?" : ""), /* "?" (maybe) */
2084 (g_query ? g_query : ""), /* query string (maybe) */
2085 http_major_version, http_minor_version);
2086 header_ptr[0] = '\r';
2087 header_ptr[1] = '\n';
2089 write(proxy_fd, header_buf, header_ptr - header_buf);
2090 free(header_buf); /* on the order of 8k, free it */
2091 /* cgi_io_loop_and_exit needs to have two disctinct fds */
2092 cgi_io_loop_and_exit(proxy_fd, dup(proxy_fd), length);
2096 tptr = urlcopy + 1; /* skip first '/' */
2098 #if ENABLE_FEATURE_HTTPD_CGI
2099 if (strncmp(tptr, "cgi-bin/", 8) == 0) {
2100 if (tptr[8] == '\0') {
2101 /* protect listing "cgi-bin/" */
2102 send_headers_and_exit(HTTP_FORBIDDEN);
2104 send_cgi_and_exit(urlcopy, prequest, length, cookie, content_type);
2106 #if ENABLE_FEATURE_HTTPD_CONFIG_WITH_SCRIPT_INTERPR
2108 char *suffix = strrchr(tptr, '.');
2111 for (cur = script_i; cur; cur = cur->next) {
2112 if (strcmp(cur->before_colon + 1, suffix) == 0) {
2113 send_cgi_and_exit(urlcopy, prequest, length, cookie, content_type);
2119 if (prequest != request_GET && prequest != request_HEAD) {
2120 send_headers_and_exit(HTTP_NOT_IMPLEMENTED);
2122 #endif /* FEATURE_HTTPD_CGI */
2124 if (urlp[-1] == '/')
2125 strcpy(urlp, index_page);
2126 if (stat(tptr, &sb) == 0) {
2127 file_size = sb.st_size;
2128 last_mod = sb.st_mtime;
2130 #if ENABLE_FEATURE_HTTPD_CGI
2131 else if (urlp[-1] == '/') {
2132 /* It's a dir URL and there is no index.html
2133 * Try cgi-bin/index.cgi */
2134 if (access("/cgi-bin/index.cgi"+1, X_OK) == 0) {
2137 send_cgi_and_exit("/cgi-bin/index.cgi", prequest, length, cookie, content_type);
2142 * fall through to send_file, it errors out if open fails
2146 send_file_and_exit(tptr,
2147 #if ENABLE_FEATURE_HTTPD_CGI
2148 (prequest != request_HEAD ? SEND_HEADERS_AND_BODY : SEND_HEADERS)
2150 SEND_HEADERS_AND_BODY
2156 * The main http server function.
2157 * Given a socket, listen for new connections and farm out
2158 * the processing as a [v]forked process.
2162 static void mini_httpd(int server_socket) NORETURN;
2163 static void mini_httpd(int server_socket)
2165 /* NB: it's best to not use xfuncs in this loop before fork().
2166 * Otherwise server may die on transient errors (temporary
2167 * out-of-memory condition, etc), which is Bad(tm).
2168 * Try to do any dangerous calls after fork.
2172 len_and_sockaddr fromAddr;
2174 /* Wait for connections... */
2175 fromAddr.len = LSA_SIZEOF_SA;
2176 n = accept(server_socket, &fromAddr.u.sa, &fromAddr.len);
2180 /* set the KEEPALIVE option to cull dead connections */
2181 setsockopt(n, SOL_SOCKET, SO_KEEPALIVE, &const_int_1, sizeof(const_int_1));
2185 #if ENABLE_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
2186 /* Do not reload config on HUP */
2187 signal(SIGHUP, SIG_IGN);
2189 close(server_socket);
2193 handle_incoming_and_exit(&fromAddr);
2195 /* parent, or fork failed */
2201 static void mini_httpd_nommu(int server_socket, int argc, char **argv) NORETURN;
2202 static void mini_httpd_nommu(int server_socket, int argc, char **argv)
2204 char *argv_copy[argc + 2];
2206 argv_copy[0] = argv[0];
2207 argv_copy[1] = (char*)"-i";
2208 memcpy(&argv_copy[2], &argv[1], argc * sizeof(argv[0]));
2210 /* NB: it's best to not use xfuncs in this loop before vfork().
2211 * Otherwise server may die on transient errors (temporary
2212 * out-of-memory condition, etc), which is Bad(tm).
2213 * Try to do any dangerous calls after fork.
2217 len_and_sockaddr fromAddr;
2219 /* Wait for connections... */
2220 fromAddr.len = LSA_SIZEOF_SA;
2221 n = accept(server_socket, &fromAddr.u.sa, &fromAddr.len);
2225 /* set the KEEPALIVE option to cull dead connections */
2226 setsockopt(n, SOL_SOCKET, SO_KEEPALIVE, &const_int_1, sizeof(const_int_1));
2230 #if ENABLE_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
2231 /* Do not reload config on HUP */
2232 signal(SIGHUP, SIG_IGN);
2234 close(server_socket);
2238 /* Run a copy of ourself in inetd mode */
2241 /* parent, or vfork failed */
2249 * Process a HTTP connection on stdin/out.
2252 static void mini_httpd_inetd(void) NORETURN;
2253 static void mini_httpd_inetd(void)
2255 len_and_sockaddr fromAddr;
2257 memset(&fromAddr, 0, sizeof(fromAddr));
2258 fromAddr.len = LSA_SIZEOF_SA;
2259 /* NB: can fail if user runs it by hand and types in http cmds */
2260 getpeername(0, &fromAddr.u.sa, &fromAddr.len);
2261 handle_incoming_and_exit(&fromAddr);
2264 #if ENABLE_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
2265 static void sighup_handler(int sig)
2267 parse_conf(default_path_httpd_conf, sig ? SIGNALED_PARSE : FIRST_PARSE);
2268 signal_SA_RESTART_empty_mask(SIGHUP, sighup_handler);
2273 c_opt_config_file = 0,
2276 USE_FEATURE_HTTPD_ENCODE_URL_STR(e_opt_encode_url,)
2277 USE_FEATURE_HTTPD_BASIC_AUTH( r_opt_realm ,)
2278 USE_FEATURE_HTTPD_AUTH_MD5( m_opt_md5 ,)
2279 USE_FEATURE_HTTPD_SETUID( u_opt_setuid ,)
2284 OPT_CONFIG_FILE = 1 << c_opt_config_file,
2285 OPT_DECODE_URL = 1 << d_opt_decode_url,
2286 OPT_HOME_HTTPD = 1 << h_opt_home_httpd,
2287 OPT_ENCODE_URL = USE_FEATURE_HTTPD_ENCODE_URL_STR((1 << e_opt_encode_url)) + 0,
2288 OPT_REALM = USE_FEATURE_HTTPD_BASIC_AUTH( (1 << r_opt_realm )) + 0,
2289 OPT_MD5 = USE_FEATURE_HTTPD_AUTH_MD5( (1 << m_opt_md5 )) + 0,
2290 OPT_SETUID = USE_FEATURE_HTTPD_SETUID( (1 << u_opt_setuid )) + 0,
2291 OPT_PORT = 1 << p_opt_port,
2292 OPT_INETD = 1 << p_opt_inetd,
2293 OPT_FOREGROUND = 1 << p_opt_foreground,
2294 OPT_VERBOSE = 1 << p_opt_verbose,
2298 int httpd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
2299 int httpd_main(int argc UNUSED_PARAM, char **argv)
2301 int server_socket = server_socket; /* for gcc */
2303 char *url_for_decode;
2304 USE_FEATURE_HTTPD_ENCODE_URL_STR(const char *url_for_encode;)
2305 USE_FEATURE_HTTPD_SETUID(const char *s_ugid = NULL;)
2306 USE_FEATURE_HTTPD_SETUID(struct bb_uidgid_t ugid;)
2307 USE_FEATURE_HTTPD_AUTH_MD5(const char *pass;)
2311 #if ENABLE_LOCALE_SUPPORT
2312 /* Undo busybox.c: we want to speak English in http (dates etc) */
2313 setlocale(LC_TIME, "C");
2316 home_httpd = xrealloc_getcwd_or_warn(NULL);
2317 /* -v counts, -i implies -f */
2318 opt_complementary = "vv:if";
2319 /* We do not "absolutize" path given by -h (home) opt.
2320 * If user gives relative path in -h,
2321 * $SCRIPT_FILENAME will not be set. */
2322 opt = getopt32(argv, "c:d:h:"
2323 USE_FEATURE_HTTPD_ENCODE_URL_STR("e:")
2324 USE_FEATURE_HTTPD_BASIC_AUTH("r:")
2325 USE_FEATURE_HTTPD_AUTH_MD5("m:")
2326 USE_FEATURE_HTTPD_SETUID("u:")
2328 &configFile, &url_for_decode, &home_httpd
2329 USE_FEATURE_HTTPD_ENCODE_URL_STR(, &url_for_encode)
2330 USE_FEATURE_HTTPD_BASIC_AUTH(, &g_realm)
2331 USE_FEATURE_HTTPD_AUTH_MD5(, &pass)
2332 USE_FEATURE_HTTPD_SETUID(, &s_ugid)
2333 , &bind_addr_or_port
2336 if (opt & OPT_DECODE_URL) {
2337 fputs(decodeString(url_for_decode, 1), stdout);
2340 #if ENABLE_FEATURE_HTTPD_ENCODE_URL_STR
2341 if (opt & OPT_ENCODE_URL) {
2342 fputs(encodeString(url_for_encode), stdout);
2346 #if ENABLE_FEATURE_HTTPD_AUTH_MD5
2347 if (opt & OPT_MD5) {
2348 puts(pw_encrypt(pass, "$1$", 1));
2352 #if ENABLE_FEATURE_HTTPD_SETUID
2353 if (opt & OPT_SETUID) {
2354 xget_uidgid(&ugid, s_ugid);
2359 if (!(opt & OPT_FOREGROUND)) {
2360 bb_daemonize_or_rexec(0, argv); /* don't change current directory */
2365 if (!(opt & OPT_INETD)) {
2366 signal(SIGCHLD, SIG_IGN);
2367 server_socket = openServer();
2368 #if ENABLE_FEATURE_HTTPD_SETUID
2369 /* drop privileges */
2370 if (opt & OPT_SETUID) {
2371 if (ugid.gid != (gid_t)-1) {
2372 if (setgroups(1, &ugid.gid) == -1)
2373 bb_perror_msg_and_die("setgroups");
2381 #if 0 /*was #if ENABLE_FEATURE_HTTPD_CGI*/
2382 /* User can do it himself: 'env - PATH="$PATH" httpd'
2383 * We don't do it because we don't want to screw users
2385 * 'env - VAR1=val1 VAR2=val2 httpd'
2386 * and have VAR1 and VAR2 values visible in their CGIs.
2387 * Besides, it is also smaller. */
2389 char *p = getenv("PATH");
2390 /* env strings themself are not freed, no need to xstrdup(p): */
2394 // if (!(opt & OPT_INETD))
2395 // setenv_long("SERVER_PORT", ???);
2399 #if ENABLE_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
2400 if (!(opt & OPT_INETD)) {
2401 /* runs parse_conf() inside */
2406 parse_conf(default_path_httpd_conf, FIRST_PARSE);
2409 xfunc_error_retval = 0;
2410 if (opt & OPT_INETD)
2413 if (!(opt & OPT_FOREGROUND))
2414 bb_daemonize(0); /* don't change current directory */
2415 mini_httpd(server_socket); /* never returns */
2417 mini_httpd_nommu(server_socket, argc, argv); /* never returns */