2 * httpd implementation for busybox
4 * Copyright (C) 2002,2003 Glenn Engel <glenne@engel.org>
5 * Copyright (C) 2003 Vladimir Oleynik <dzo@simtreas.ru>
7 * simplify patch stolen from libbb without using strdup
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *****************************************************************************
27 * httpd -p 8080 -h $HOME/public_html
28 * or for daemon start from rc script with uid=0:
30 * This is equivalent if www user have uid=80 to
31 * httpd -p 80 -u 80 -h /www -c /etc/httpd.conf -r "Web Server Authentication"
34 * When a url contains "cgi-bin" it is assumed to be a cgi script. The
35 * server changes directory to the location of the script and executes it
36 * after setting QUERY_STRING and other environment variables. If url args
37 * are included in the url or as a post, the args are placed into decoded
38 * environment variables. e.g. /cgi-bin/setup?foo=Hello%20World will set
39 * the $CGI_foo environment variable to "Hello World" while
40 * CONFIG_FEATURE_HTTPD_SET_CGI_VARS_TO_ENV enabled.
42 * The server can also be invoked as a url arg decoder and html text encoder
44 * foo=`httpd -d $foo` # decode "Hello%20World" as "Hello World"
45 * bar=`httpd -e "<Hello World>"` # encode as "<Hello World>"
46 * Note that url encoding for arguments is not the same as html encoding for
47 * presenation. -d decodes a url-encoded argument while -e encodes in html
50 * httpd.conf has the following format:
52 * A:172.20. # Allow any address that begins with 172.20
53 * A:10.10. # Allow any address that begins with 10.10.
54 * A:10.20 # Allow any address that previous set and 10.200-209.X.X
55 * A:127.0.0.1 # Allow local loopback connections
56 * D:* # Deny from other IP connections
57 * /cgi-bin:foo:bar # Require user foo, pwd bar on urls starting with /cgi-bin/
58 * /adm:admin:setup # Require user admin, pwd setup on urls starting with /adm/
59 * /adm:toor:PaSsWd # or user toor, pwd PaSsWd on urls starting with /adm/
60 * .au:audio/basic # additional mime type for audio.au files
62 * A/D may be as a/d or allow/deny - first char case unsensitive
63 * Deny IP rules take precedence over allow rules.
66 * The Deny/Allow IP logic:
68 * - Default is to allow all. No addresses are denied unless
69 * denied with a D: rule.
70 * - Order of Deny/Allow rules is significant
71 * - Deny rules take precedence over allow rules.
72 * - If a deny all rule (D:*) is used it acts as a catch-all for unmatched
74 * - Specification of Allow all (A:*) is a no-op
77 * 1. Allow only specified addresses
78 * A:172.20. # Allow any address that begins with 172.20
79 * A:10.10. # Allow any address that begins with 10.10.
80 * A:10.10 # Allow any address that previous set and 10.100-109.X.X
81 * A:127.0.0.1 # Allow local loopback connections
82 * D:* # Deny from other IP connections
84 * 2. Only deny specified addresses
85 * D:1.2.3. # deny from 1.2.3.0 - 1.2.3.255
86 * D:2.3.4. # deny from 2.3.4.0 - 2.3.4.255
87 * A:* # (optional line added for clarity)
89 * If a sub directory contains a config file it is parsed and merged with
90 * any existing settings as if it was appended to the original configuration
91 * except that all previous IP config rules are discarded.
93 * subdir paths are relative to the containing subdir and thus cannot
94 * affect the parent rules.
96 * Note that since the sub dir is parsed in the forked thread servicing the
97 * subdir http request, any merge is discarded when the process exits. As a
98 * result, the subdir settings only have a lifetime of a single request.
101 * If -c is not set, an attempt will be made to open the default
102 * root configuration file. If -c is set and the file is not found, the
103 * server exits with an error.
109 #include <ctype.h> /* for isspace */
111 #include <stdlib.h> /* for malloc */
113 #include <unistd.h> /* for close */
115 #include <sys/types.h>
116 #include <sys/socket.h> /* for connect and socket*/
117 #include <netinet/in.h> /* for sockaddr_in */
118 #include <sys/time.h>
119 #include <sys/stat.h>
120 #include <sys/wait.h>
121 #include <fcntl.h> /* for open modes */
125 static const char httpdVersion[] = "busybox httpd/1.28 22-Jun-2003";
126 static const char default_path_httpd_conf[] = "/etc";
127 static const char httpd_conf[] = "httpd.conf";
128 static const char home[] = "./";
131 # define cont_l_fmt "%lld"
133 # define cont_l_fmt "%ld"
137 // Note: bussybox xfuncs are not used because we want the server to keep running
138 // if something bad happens due to a malformed user request.
139 // As a result, all memory allocation after daemonize
140 // is checked rigorously
144 /* Configure options, disabled by default as custom httpd feature */
146 /* disabled as optional features */
147 //#define CONFIG_FEATURE_HTTPD_SET_CGI_VARS_TO_ENV
148 //#define CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
149 //#define CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
150 //#define CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
151 //#define CONFIG_FEATURE_HTTPD_SETUID
152 //#define CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
154 /* If set, use this server from internet superserver only */
155 //#define CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
157 /* You can use this server as standalone, require libbb.a for linking */
158 //#define HTTPD_STANDALONE
160 /* Config options, disable this for do very small module */
161 //#define CONFIG_FEATURE_HTTPD_CGI
162 //#define CONFIG_FEATURE_HTTPD_BASIC_AUTH
163 //#define CONFIG_FEATURE_HTTPD_AUTH_MD5
165 #ifdef HTTPD_STANDALONE
166 /* standalone, enable all features */
167 #undef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
168 /* unset config option for remove warning as redefined */
169 #undef CONFIG_FEATURE_HTTPD_BASIC_AUTH
170 #undef CONFIG_FEATURE_HTTPD_AUTH_MD5
171 #undef CONFIG_FEATURE_HTTPD_SET_CGI_VARS_TO_ENV
172 #undef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
173 #undef CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
174 #undef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
175 #undef CONFIG_FEATURE_HTTPD_CGI
176 #undef CONFIG_FEATURE_HTTPD_SETUID
177 #undef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
178 /* enable all features now */
179 #define CONFIG_FEATURE_HTTPD_BASIC_AUTH
180 #define CONFIG_FEATURE_HTTPD_AUTH_MD5
181 #define CONFIG_FEATURE_HTTPD_SET_CGI_VARS_TO_ENV
182 #define CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
183 #define CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
184 #define CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
185 #define CONFIG_FEATURE_HTTPD_CGI
186 #define CONFIG_FEATURE_HTTPD_SETUID
187 #define CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
189 /* require from libbb.a for linking */
190 const char *bb_applet_name = "httpd";
192 void bb_show_usage(void)
194 fprintf(stderr, "Usage: %s [-p <port>] [-c configFile] [-d/-e <string>] "
195 "[-r realm] [-u user] [-h homedir]\n", bb_applet_name);
200 #ifdef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
201 #undef CONFIG_FEATURE_HTTPD_SETUID /* use inetd user.group config settings */
202 #undef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP /* so is not daemon */
203 /* inetd set stderr to accepted socket and we can`t true see debug messages */
207 /* CGI environ size */
208 #ifdef CONFIG_FEATURE_HTTPD_SET_CGI_VARS_TO_ENV
209 #define ENVSIZE 70 /* set max CGI variable */
211 #define ENVSIZE 15 /* minimal requires */
214 #define MAX_POST_SIZE (64*1024) /* 64k. Its Small? May be ;) */
216 #define MAX_MEMORY_BUFF 8192 /* IO buffer */
218 typedef struct HT_ACCESS {
220 struct HT_ACCESS *next;
221 char before_colon[1]; /* really bigger, must last */
226 #ifdef CONFIG_FEATURE_HTTPD_CGI
227 char *envp[ENVSIZE+1];
230 char buf[MAX_MEMORY_BUFF];
232 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
235 const char *configFile;
237 char rmt_ip[16]; /* for set env REMOTE_ADDR */
238 unsigned port; /* server initial port and for
239 set env REMOTE_PORT */
241 const char *found_mime_type;
242 off_t ContentLength; /* -1 - unknown */
245 Htaccess *ip_a_d; /* config allow/deny lines */
247 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
248 Htaccess *auth; /* config user:password lines */
250 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
251 Htaccess *mime_a; /* config mime types */
254 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
256 #define a_c_r config->accepted_socket
257 #define a_c_w config->accepted_socket
258 int debugHttpd; /* if seted, don`t stay daemon */
265 static HttpdConfig *config;
267 static const char request_GET[] = "GET"; /* size algorithic optimize */
269 static const char* const suffixTable [] = {
270 /* Warning: shorted equalent suffix in one line must be first */
271 ".htm.html", "text/html",
272 ".jpg.jpeg", "image/jpeg",
275 ".txt.h.c.cc.cpp", "text/plain",
278 ".avi", "video/x-msvideo",
279 ".qt.mov", "video/quicktime",
280 ".mpe.mpeg", "video/mpeg",
281 ".mid.midi", "audio/midi",
282 ".mp3", "audio/mpeg",
283 #if 0 /* unpopular */
284 ".au", "audio/basic",
285 ".pac", "application/x-ns-proxy-autoconfig",
286 ".vrml.wrl", "model/vrml",
288 0, "application/octet-stream" /* default */
294 HTTP_UNAUTHORIZED = 401, /* authentication needed, respond with auth hdr */
295 HTTP_NOT_FOUND = 404,
296 HTTP_NOT_IMPLEMENTED = 501, /* used for unrecognized requests */
297 HTTP_BAD_REQUEST = 400, /* malformed syntax */
298 HTTP_FORBIDDEN = 403,
299 HTTP_INTERNAL_SERVER_ERROR = 500,
300 #if 0 /* future use */
302 HTTP_SWITCHING_PROTOCOLS = 101,
305 HTTP_NON_AUTHORITATIVE_INFO = 203,
306 HTTP_NO_CONTENT = 204,
307 HTTP_MULTIPLE_CHOICES = 300,
308 HTTP_MOVED_PERMANENTLY = 301,
309 HTTP_MOVED_TEMPORARILY = 302,
310 HTTP_NOT_MODIFIED = 304,
311 HTTP_PAYMENT_REQUIRED = 402,
312 HTTP_BAD_GATEWAY = 502,
313 HTTP_SERVICE_UNAVAILABLE = 503, /* overload, maintenance */
314 HTTP_RESPONSE_SETSIZE=0xffffffff
320 HttpResponseNum type;
325 static const HttpEnumString httpResponseNames[] = {
327 { HTTP_NOT_IMPLEMENTED, "Not Implemented",
328 "The requested method is not recognized by this server." },
329 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
330 { HTTP_UNAUTHORIZED, "Unauthorized", "" },
332 { HTTP_NOT_FOUND, "Not Found",
333 "The requested URL was not found on this server." },
334 { HTTP_BAD_REQUEST, "Bad Request", "Unsupported method." },
335 { HTTP_FORBIDDEN, "Forbidden", "" },
336 { HTTP_INTERNAL_SERVER_ERROR, "Internal Server Error",
337 "Internal Server Error" },
338 #if 0 /* not implemented */
339 { HTTP_CREATED, "Created" },
340 { HTTP_ACCEPTED, "Accepted" },
341 { HTTP_NO_CONTENT, "No Content" },
342 { HTTP_MULTIPLE_CHOICES, "Multiple Choices" },
343 { HTTP_MOVED_PERMANENTLY, "Moved Permanently" },
344 { HTTP_MOVED_TEMPORARILY, "Moved Temporarily" },
345 { HTTP_NOT_MODIFIED, "Not Modified" },
346 { HTTP_BAD_GATEWAY, "Bad Gateway", "" },
347 { HTTP_SERVICE_UNAVAILABLE, "Service Unavailable", "" },
352 static const char RFC1123FMT[] = "%a, %d %b %Y %H:%M:%S GMT";
353 static const char Content_length[] = "Content-length:";
357 static void free_config_lines(Htaccess **pprev)
359 Htaccess *prev = *pprev;
362 Htaccess *cur = prev;
371 #define FIRST_PARSE 0
372 #define SUBDIR_PARSE 1
373 #define SIGNALED_PARSE 2
374 #define FIND_FROM_HTTPD_ROOT 3
375 /****************************************************************************
377 > $Function: parse_conf()
379 * $Description: parse configuration file into in-memory linked list.
381 * The first non-white character is examined to determine if the config line
382 * is one of the following:
383 * .ext:mime/type # new mime type not compiled into httpd
384 * [adAD]:from # ip address allow/deny, * for wildcard
385 * /path:user:pass # username/password
387 * Any previous IP rules are discarded.
388 * If the flag argument is not SUBDIR_PARSE then all /path and mime rules
389 * are also discarded. That is, previous settings are retained if flag is
393 * (const char *) path . . null for ip address checks, path for password
395 * (int) flag . . . . . . the source of the parse request.
399 ****************************************************************************/
400 static void parse_conf(const char *path, int flag)
404 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
408 const char *cf = config->configFile;
413 /* free previous ip setup if present */
414 free_config_lines(&config->ip_a_d);
415 config->flg_deny_all = 0;
416 /* retain previous auth and mime config only for subdir parse */
417 if(flag != SUBDIR_PARSE) {
418 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
419 free_config_lines(&config->auth)
421 ; /* appease compiler warnings if option is not set */
422 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
423 free_config_lines(&config->mime_a);
427 if(flag == SUBDIR_PARSE || cf == NULL) {
428 cf = alloca(strlen(path) + sizeof(httpd_conf) + 2);
430 if(flag == FIRST_PARSE)
431 bb_error_msg_and_die(bb_msg_memory_exhausted);
434 sprintf((char *)cf, "%s/%s", path, httpd_conf);
437 while((f = fopen(cf, "r")) == NULL) {
438 if(flag == SUBDIR_PARSE || flag == FIND_FROM_HTTPD_ROOT) {
439 /* config file not found, no changes to config */
442 if(config->configFile && flag == FIRST_PARSE) /* if -c option given */
443 bb_perror_msg_and_die("%s", cf);
444 flag = FIND_FROM_HTTPD_ROOT;
448 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
451 /* This could stand some work */
452 while ( (p0 = fgets(buf, sizeof(buf), f)) != NULL) {
454 for(p = p0; *p0 != 0 && *p0 != '#'; p0++) {
457 if(*p0 == ':' && c == NULL)
463 /* test for empty or strange line */
464 if (c == NULL || *c == 0)
471 /* memorize deny all */
472 config->flg_deny_all++;
474 /* skip default other "word:*" config lines */
481 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
484 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
490 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
492 /* make full path from httpd root / curent_path / config_line_path */
493 cf = flag == SUBDIR_PARSE ? path : "";
494 p0 = malloc(strlen(cf) + (c - buf) + 2 + strlen(c));
498 sprintf(p0, "/%s%s", cf, buf);
500 /* another call bb_simplify_path */
505 if (*cf == '/') { /* skip duplicate (or initial) slash */
507 } else if (*cf == '.') {
508 if (cf[1] == '/' || cf[1] == 0) { /* remove extra '.' */
510 } else if ((cf[1] == '.') && (cf[2] == '/' || cf[2] == 0)) {
513 while (*--p != '/'); /* omit previous dir */
522 if ((p == p0) || (*p != '/')) { /* not a trailing slash */
523 ++p; /* so keep last character */
526 sprintf(p0, "%s:%s", p0, c);
529 /* storing current config line */
531 cur = calloc(1, sizeof(Htaccess) + strlen(p0));
533 cf = strcpy(cur->before_colon, p0);
536 cur->after_colon = c;
537 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
541 if(*cf == 'A' || *cf == 'D') {
543 /* Deny:form_IP move top */
544 cur->next = config->ip_a_d;
545 config->ip_a_d = cur;
547 /* add to bottom A:form_IP config line */
548 Htaccess *prev_IP = config->ip_a_d;
550 if(prev_IP == NULL) {
551 config->ip_a_d = cur;
554 prev_IP = prev_IP->next;
559 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
560 else if(*cf == '.') {
561 /* config .mime line move top for overwrite previous */
562 cur->next = config->mime_a;
563 config->mime_a = cur;
567 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
568 else if(prev == NULL) {
570 config->auth = prev = cur;
572 /* sort path, if current lenght eq or bigger then move up */
573 Htaccess *prev_hti = config->auth;
577 for(hti = prev_hti; hti; hti = hti->next) {
578 if(l >= strlen(hti->before_colon)) {
579 /* insert before hti */
581 if(prev_hti != hti) {
582 prev_hti->next = cur;
590 prev_hti = prev_hti->next;
592 if(!hti) { /* not inserted, add to bottom */
603 #ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
604 /****************************************************************************
606 > $Function: encodeString()
608 * $Description: Given a string, html encode special characters.
609 * This is used for the -e command line option to provide an easy way
610 * for scripts to encode result data without confusing browsers. The
611 * returned string pointer is memory allocated by malloc().
614 * (const char *) string . . The first string to encode.
616 * $Return: (char *) . . . .. . . A pointer to the encoded string.
618 * $Errors: Returns a null string ("") if memory is not available.
620 ****************************************************************************/
621 static char *encodeString(const char *string)
623 /* take the simple route and encode everything */
624 /* could possibly scan once to get length. */
625 int len = strlen(string);
626 char *out = malloc(len*5 +1);
631 while ((ch = *string++)) {
632 // very simple check for what to encode
633 if (isalnum(ch)) *p++ = ch;
634 else p += sprintf(p, "&#%d", (unsigned char) ch);
639 #endif /* CONFIG_FEATURE_HTTPD_ENCODE_URL_STR */
641 /****************************************************************************
643 > $Function: decodeString()
645 * $Description: Given a URL encoded string, convert it to plain ascii.
646 * Since decoding always makes strings smaller, the decode is done in-place.
647 * Thus, callers should strdup() the argument if they do not want the
648 * argument modified. The return is the original pointer, allowing this
649 * function to be easily used as arguments to other functions.
652 * (char *) string . . . The first string to decode.
653 * (int) flag . . . 1 if require decode '+' as ' ' for CGI
655 * $Return: (char *) . . . . A pointer to the decoded string (same as input).
659 ****************************************************************************/
660 static char *decodeString(char *orig, int flag_plus_to_space)
662 /* note that decoded string is always shorter than original */
668 if (*ptr == '+' && flag_plus_to_space) { *string++ = ' '; ptr++; }
669 else if (*ptr != '%') *string++ = *ptr++;
672 sscanf(ptr+1, "%2X", &value);
682 #ifdef CONFIG_FEATURE_HTTPD_CGI
683 /****************************************************************************
685 > $Function: addEnv()
687 * $Description: Add an enviornment variable setting to the global list.
688 * A NAME=VALUE string is allocated, filled, and added to the list of
689 * environment settings passed to the cgi execution script.
692 * (char *) name_before_underline - The first part environment variable name.
693 * (char *) name_after_underline - The second part environment variable name.
694 * (char *) value . . The value to which the env variable is set.
698 * $Errors: Silently returns if the env runs out of space to hold the new item
700 ****************************************************************************/
701 static void addEnv(const char *name_before_underline,
702 const char *name_after_underline, const char *value)
705 const char *underline;
707 if (config->envCount >= ENVSIZE)
711 underline = *name_after_underline ? "_" : "";
712 asprintf(&s, "%s%s%s=%s", name_before_underline, underline,
713 name_after_underline, value);
715 config->envp[config->envCount++] = s;
716 config->envp[config->envCount] = 0;
720 #if defined(CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV) || !defined(CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY)
721 /* set environs SERVER_PORT and REMOTE_PORT */
722 static void addEnvPort(const char *port_name)
726 sprintf(buf, "%u", config->port);
727 addEnv(port_name, "PORT", buf);
730 #endif /* CONFIG_FEATURE_HTTPD_CGI */
732 #ifdef CONFIG_FEATURE_HTTPD_SET_CGI_VARS_TO_ENV
733 /****************************************************************************
735 > $Function: addEnvCgi
737 * $Description: Create environment variables given a URL encoded arg list.
738 * For each variable setting the URL encoded arg list, create a corresponding
739 * environment variable. URL encoded arguments have the form
740 * name1=value1&name2=value2&name3=&ignores
741 * from this example, name3 set empty value, tail without '=' skiping
744 * (char *) pargs . . . . A pointer to the URL encoded arguments.
750 ****************************************************************************/
751 static void addEnvCgi(const char *pargs)
755 char *namelist; /* space separated list of arg names */
756 if (pargs==0) return;
758 /* args are a list of name=value&name2=value2 sequences */
759 namelist = (char *) malloc(strlen(pargs));
760 if (namelist) namelist[0]=0;
761 memargs = args = strdup(pargs);
762 while (args && *args) {
763 const char *name = args;
764 char *value = strchr(args, '=');
766 if (!value) /* &XXX without '=' */
769 args = strchr(value, '&');
772 addEnv("CGI", name, decodeString(value, 1));
773 if (*namelist) strcat(namelist, " ");
774 strcat(namelist, name);
778 addEnv("CGI", "ARGLIST_", namelist);
782 #endif /* CONFIG_FEATURE_HTTPD_SET_CGI_VARS_TO_ENV */
785 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
786 /****************************************************************************
788 > $Function: decodeBase64()
790 > $Description: Decode a base 64 data stream as per rfc1521.
791 * Note that the rfc states that none base64 chars are to be ignored.
792 * Since the decode always results in a shorter size than the input, it is
793 * OK to pass the input arg as an output arg.
796 * (char *) Data . . . . A pointer to a base64 encoded string.
797 * Where to place the decoded data.
803 ****************************************************************************/
804 static void decodeBase64(char *Data)
807 const unsigned char *in = Data;
808 // The decoded size will be at most 3/4 the size of the encoded
809 unsigned long ch = 0;
815 if(t >= '0' && t <= '9')
817 else if(t >= 'A' && t <= 'Z')
819 else if(t >= 'a' && t <= 'z')
833 *Data++ = (char) (ch >> 16);
834 *Data++ = (char) (ch >> 8);
844 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
845 /****************************************************************************
847 > $Function: openServer()
849 * $Description: create a listen server socket on the designated port.
851 * $Return: (int) . . . A connection socket. -1 for errors.
855 ****************************************************************************/
856 static int openServer(void)
858 struct sockaddr_in lsocket;
861 /* create the socket right now */
862 /* inet_addr() returns a value that is already in network order */
863 memset(&lsocket, 0, sizeof(lsocket));
864 lsocket.sin_family = AF_INET;
865 lsocket.sin_addr.s_addr = INADDR_ANY;
866 lsocket.sin_port = htons(config->port) ;
867 fd = socket(AF_INET, SOCK_STREAM, 0);
869 /* tell the OS it's OK to reuse a previous address even though */
870 /* it may still be in a close down state. Allows bind to succeed. */
873 setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, (void *)&on, sizeof(on)) ;
875 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void *)&on, sizeof(on)) ;
877 if (bind(fd, (struct sockaddr *)&lsocket, sizeof(lsocket)) == 0) {
879 signal(SIGCHLD, SIG_IGN); /* prevent zombie (defunct) processes */
881 bb_perror_msg_and_die("bind");
884 bb_perror_msg_and_die("create socket");
888 #endif /* CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY */
890 /****************************************************************************
892 > $Function: sendHeaders()
894 * $Description: Create and send HTTP response headers.
895 * The arguments are combined and sent as one write operation. Note that
896 * IE will puke big-time if the headers are not sent in one packet and the
897 * second packet is delayed for any reason.
900 * (HttpResponseNum) responseNum . . . The result code to send.
902 * $Return: (int) . . . . writing errors
904 ****************************************************************************/
905 static int sendHeaders(HttpResponseNum responseNum)
907 char *buf = config->buf;
908 const char *responseString = "";
909 const char *infoString = 0;
911 time_t timer = time(0);
916 i < (sizeof(httpResponseNames)/sizeof(httpResponseNames[0])); i++) {
917 if (httpResponseNames[i].type == responseNum) {
918 responseString = httpResponseNames[i].name;
919 infoString = httpResponseNames[i].info;
923 if (responseNum != HTTP_OK) {
924 config->found_mime_type = "text/html"; // error message is HTML
927 /* emit the current date */
928 strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&timer));
930 "HTTP/1.0 %d %s\nContent-type: %s\r\n"
931 "Date: %s\r\nConnection: close\r\n",
932 responseNum, responseString, config->found_mime_type, timeStr);
934 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
935 if (responseNum == HTTP_UNAUTHORIZED) {
936 len += sprintf(buf+len, "WWW-Authenticate: Basic realm=\"%s\"\r\n",
940 if (config->ContentLength != -1) { /* file */
941 strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&config->last_mod));
942 len += sprintf(buf+len, "Last-Modified: %s\r\n%s " cont_l_fmt "\r\n",
943 timeStr, Content_length, config->ContentLength);
948 len += sprintf(buf+len,
949 "<HEAD><TITLE>%d %s</TITLE></HEAD>\n"
950 "<BODY><H1>%d %s</H1>\n%s\n</BODY>\n",
951 responseNum, responseString,
952 responseNum, responseString, infoString);
955 if (config->debugHttpd) fprintf(stderr, "Headers: '%s'", buf);
957 return bb_full_write(a_c_w, buf, len);
960 /****************************************************************************
962 > $Function: getLine()
964 * $Description: Read from the socket until an end of line char found.
966 * Characters are read one at a time until an eol sequence is found.
969 * (char *) buf . . Where to place the read result.
971 * $Return: (int) . . . . number of characters read. -1 if error.
973 ****************************************************************************/
974 static int getLine(char *buf)
978 while (read(a_c_r, buf + count, 1) == 1) {
979 if (buf[count] == '\r') continue;
980 if (buf[count] == '\n') {
984 if(count < (MAX_MEMORY_BUFF-1)) /* check owerflow */
987 if (count) return count;
991 #ifdef CONFIG_FEATURE_HTTPD_CGI
992 /****************************************************************************
994 > $Function: sendCgi()
996 * $Description: Execute a CGI script and send it's stdout back
998 * Environment variables are set up and the script is invoked with pipes
999 * for stdin/stdout. If a post is being done the script is fed the POST
1000 * data in addition to setting the QUERY_STRING variable (for GETs or POSTs).
1003 * (const char *) url . . . The requested URL (with leading /).
1004 * (const char *urlArgs). . Any URL arguments.
1005 * (const char *body) . . . POST body contents.
1006 * (int bodyLen) . . . . . Length of the post body.
1007 * (const char *cookie) . . For set HTTP_COOKIE.
1010 * $Return: (char *) . . . . A pointer to the decoded string (same as input).
1014 ****************************************************************************/
1015 static int sendCgi(const char *url,
1016 const char *request, const char *urlArgs,
1017 const char *body, int bodyLen, const char *cookie)
1019 int fromCgi[2]; /* pipe for reading data from CGI */
1020 int toCgi[2]; /* pipe for sending data to CGI */
1022 static char * argp[] = { 0, 0 };
1029 if (pipe(fromCgi) != 0) {
1032 if (pipe(toCgi) != 0) {
1045 char *purl = strdup( url );
1046 char realpath_buff[MAXPATHLEN];
1054 dup2(inFd, 0); // replace stdin with the pipe
1055 dup2(outFd, 1); // replace stdout with the pipe
1057 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1058 if (!config->debugHttpd)
1060 dup2(outFd, 2); // replace stderr with the pipe
1071 while((script = strchr( script + 1, '/' )) != NULL) {
1072 /* have script.cgi/PATH_INFO or dirs/script.cgi[/PATH_INFO] */
1076 if(is_directory(purl + 1, 1, &sb) == 0) {
1077 /* not directory, found script.cgi/PATH_INFO */
1081 *script = '/'; /* is directory, find next '/' */
1083 addEnv("PATH", "INFO", script); /* set /PATH_INFO or NULL */
1084 addEnv("PATH", "", getenv("PATH"));
1085 addEnv("REQUEST", "METHOD", request);
1087 char *uri = alloca(strlen(purl) + 2 + strlen(urlArgs));
1089 sprintf(uri, "%s?%s", purl, urlArgs);
1090 addEnv("REQUEST", "URI", uri);
1092 addEnv("REQUEST", "URI", purl);
1095 *script = '\0'; /* reduce /PATH_INFO */
1096 /* set SCRIPT_NAME as full path: /cgi-bin/dirs/script.cgi */
1097 addEnv("SCRIPT_NAME", "", purl);
1098 addEnv("QUERY_STRING", "", urlArgs);
1099 addEnv("SERVER", "SOFTWARE", httpdVersion);
1100 addEnv("SERVER", "PROTOCOL", "HTTP/1.0");
1101 addEnv("GATEWAY_INTERFACE", "", "CGI/1.1");
1102 #ifdef CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
1103 addEnv("REMOTE", "ADDR", config->rmt_ip);
1104 addEnvPort("REMOTE");
1106 addEnv("REMOTE_ADDR", "", config->rmt_ip);
1111 sprintf(sbl, "%d", bodyLen);
1112 addEnv("CONTENT_LENGTH", "", sbl);
1115 addEnv("HTTP_COOKIE", "", cookie);
1117 #ifdef CONFIG_FEATURE_HTTPD_SET_CGI_VARS_TO_ENV
1118 if (request != request_GET) {
1125 /* set execve argp[0] without path */
1126 argp[0] = strrchr( purl, '/' ) + 1;
1127 /* but script argp[0] must have absolute path and chdiring to this */
1128 if(realpath(purl + 1, realpath_buff) != NULL) {
1129 script = strrchr(realpath_buff, '/');
1132 if(chdir(realpath_buff) == 0) {
1134 // now run the program. If it fails,
1135 // use _exit() so no destructors
1136 // get called and make a mess.
1137 execve(realpath_buff, argp, config->envp);
1141 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1142 config->accepted_socket = 1; /* send to stdout */
1144 sendHeaders(HTTP_NOT_FOUND);
1151 /* parent process */
1158 if (body) bb_full_write(outFd, body, bodyLen);
1162 struct timeval timeout;
1169 FD_SET(inFd, &readSet);
1171 /* Now wait on the set of sockets! */
1173 timeout.tv_usec = 10000;
1174 nfound = select(inFd + 1, &readSet, 0, 0, &timeout);
1177 if (waitpid(pid, &status, WNOHANG) > 0) {
1180 if (config->debugHttpd) {
1181 if (WIFEXITED(status))
1182 bb_error_msg("piped has exited with status=%d", WEXITSTATUS(status));
1183 if (WIFSIGNALED(status))
1184 bb_error_msg("piped has exited with signal=%d", WTERMSIG(status));
1193 // There is something to read
1194 count = bb_full_read(inFd, buf, sizeof(buf)-1);
1195 // If a read returns 0 at this point then some type of error has
1196 // occurred. Bail now.
1197 if (count == 0) break;
1200 /* check to see if the user script added headers */
1201 if (strncmp(buf, "HTTP/1.0 200 OK\n", 4) != 0) {
1202 bb_full_write(s, "HTTP/1.0 200 OK\n", 16);
1204 if (strstr(buf, "ontent-") == 0) {
1205 bb_full_write(s, "Content-type: text/plain\n\n", 26);
1209 bb_full_write(s, buf, count);
1211 if (config->debugHttpd)
1212 fprintf(stderr, "cgi read %d bytes\n", count);
1220 #endif /* CONFIG_FEATURE_HTTPD_CGI */
1222 /****************************************************************************
1224 > $Function: sendFile()
1226 * $Description: Send a file response to an HTTP request
1229 * (const char *) url . . The URL requested.
1230 * (char *) buf . . . . . The stack buffer.
1232 * $Return: (int) . . . . . . Always 0.
1234 ****************************************************************************/
1235 static int sendFile(const char *url, char *buf)
1239 const char * const * table;
1240 const char * try_suffix;
1242 suffix = strrchr(url, '.');
1244 for (table = suffixTable; *table; table += 2)
1245 if(suffix != NULL && (try_suffix = strstr(*table, suffix)) != 0) {
1246 try_suffix += strlen(suffix);
1247 if(*try_suffix == 0 || *try_suffix == '.')
1250 /* also, if not found, set default as "application/octet-stream"; */
1251 config->found_mime_type = *(table+1);
1252 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
1256 for (cur = config->mime_a; cur; cur = cur->next) {
1257 if(strcmp(cur->before_colon, suffix) == 0) {
1258 config->found_mime_type = cur->after_colon;
1263 #endif /* CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES */
1266 if (config->debugHttpd)
1267 fprintf(stderr, "Sending file '%s' Content-type: %s\n",
1268 url, config->found_mime_type);
1271 f = open(url, O_RDONLY);
1275 sendHeaders(HTTP_OK);
1276 while ((count = bb_full_read(f, buf, MAX_MEMORY_BUFF)) > 0) {
1277 bb_full_write(a_c_w, buf, count);
1282 if (config->debugHttpd)
1283 bb_perror_msg("Unable to open '%s'", url);
1285 sendHeaders(HTTP_NOT_FOUND);
1291 /****************************************************************************
1293 > $Function: checkPerm()
1295 * $Description: Check the permission file for access.
1297 * If config file isn't present, everything is allowed.
1298 * Entries are of the form you can see example from header source
1301 * (const char *) path . . . . The file path or NULL for ip addresses.
1302 * (const char *) request . . . User information to validate.
1304 * $Return: (int) . . . . . . . . . 1 if request OK, 0 otherwise.
1306 ****************************************************************************/
1308 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1309 static int checkPerm(const char *path, const char *request)
1315 int ipaddr = path == NULL;
1316 const char *prev = NULL;
1318 /* This could stand some work */
1319 for (cur = ipaddr ? config->ip_a_d : config->auth; cur; cur = cur->next) {
1320 p0 = cur->before_colon;
1321 if(prev != NULL && strcmp(prev, p0) != 0)
1322 continue; /* find next identical */
1323 p = cur->after_colon;
1325 if (config->debugHttpd)
1326 fprintf(stderr,"checkPerm: '%s' ? '%s'\n",
1327 (ipaddr ? (*p ? p : "*") : p0), request);
1330 if(strncmp(p, request, strlen(p)) != 0)
1332 return *p0 == 'A'; /* Allow/Deny */
1336 if(strncmp(p0, path, l) == 0 &&
1337 (l == 1 || path[l] == '/' || path[l] == 0)) {
1338 /* path match found. Check request */
1340 /* for check next /path:user:password */
1342 #ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
1346 char *u = strchr(request, ':');
1349 /* bad request, ':' required */
1352 if(strncmp(p, request, u-request) != 0) {
1353 /* user uncompared */
1356 pp = strchr(p, ':');
1357 if(pp && pp[1] == '$' && pp[2] == '1' &&
1358 pp[3] == '$' && pp[4]) {
1360 cipher = pw_encrypt(u+1, pp);
1361 if (strcmp(cipher, pp) == 0)
1368 if (strcmp(p, request) == 0)
1376 return !config->flg_deny_all;
1377 return prev == NULL;
1380 #else /* ifndef CONFIG_FEATURE_HTTPD_BASIC_AUTH */
1381 static int checkPermIP(const char *request)
1386 /* This could stand some work */
1387 for (cur = config->ip_a_d; cur; cur = cur->next) {
1388 p = cur->after_colon;
1390 if (config->debugHttpd)
1391 fprintf(stderr, "checkPerm: '%s' ? '%s'\n",
1392 (*p ? p : "*"), request);
1394 if(strncmp(p, request, strlen(p)) == 0)
1395 return *cur->before_colon == 'A'; /* Allow/Deny */
1398 /* if uncofigured, return 1 - access from all */
1399 return !config->flg_deny_all;
1401 #define checkPerm(null, request) checkPermIP(request)
1402 #endif /* CONFIG_FEATURE_HTTPD_BASIC_AUTH */
1405 /****************************************************************************
1407 > $Function: handleIncoming()
1409 * $Description: Handle an incoming http request.
1411 ****************************************************************************/
1412 static void handleIncoming(void)
1414 char *buf = config->buf;
1419 #ifdef CONFIG_FEATURE_HTTPD_CGI
1420 const char *prequest = request_GET;
1429 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1430 int credentials = -1; /* if not requred this is Ok */
1436 if (getLine(buf) <= 0)
1439 purl = strpbrk(buf, " \t");
1442 sendHeaders(HTTP_BAD_REQUEST);
1446 #ifdef CONFIG_FEATURE_HTTPD_CGI
1447 if(strcasecmp(buf, prequest) != 0) {
1449 if(strcasecmp(buf, prequest) != 0) {
1450 sendHeaders(HTTP_NOT_IMPLEMENTED);
1455 if(strcasecmp(buf, request_GET) != 0) {
1456 sendHeaders(HTTP_NOT_IMPLEMENTED);
1461 count = sscanf(purl, " %[^ ] HTTP/%d.%*d", buf, &blank);
1463 decodeString(buf, 0);
1464 if (count < 1 || buf[0] != '/') {
1465 /* Garbled request/URL */
1468 url = alloca(strlen(buf) + 12); /* + sizeof("/index.html\0") */
1470 sendHeaders(HTTP_INTERNAL_SERVER_ERROR);
1474 /* extract url args if present */
1475 urlArgs = strchr(url, '?');
1479 /* algorithm stolen from libbb bb_simplify_path(),
1480 but don`t strdup and reducing trailing slash and protect out root */
1485 if (*test == '/') { /* skip duplicate (or initial) slash */
1487 } else if (*test == '.') {
1488 if (test[1] == '/' || test[1] == 0) { /* skip extra '.' */
1490 } else if ((test[1] == '.') && (test[2] == '/' || test[2] == 0)) {
1493 /* protect out root */
1496 while (*--purl != '/'); /* omit previous dir */
1504 *++purl = 0; /* so keep last character */
1505 test = purl; /* end ptr */
1507 /* If URL is directory, adding '/' */
1508 if(test[-1] != '/') {
1509 if ( is_directory(url + 1, 1, &sb) ) {
1512 purl = test; /* end ptr */
1516 if (config->debugHttpd)
1517 fprintf(stderr, "url='%s', args=%s\n", url, urlArgs);
1521 ip_allowed = checkPerm(NULL, config->rmt_ip);
1522 while(ip_allowed && (test = strchr( test + 1, '/' )) != NULL) {
1523 /* have path1/path2 */
1525 if( is_directory(url + 1, 1, &sb) ) {
1526 /* may be having subdir config */
1527 parse_conf(url + 1, SUBDIR_PARSE);
1528 ip_allowed = checkPerm(NULL, config->rmt_ip);
1533 // read until blank line for HTTP version specified, else parse immediate
1534 while (blank >= 0 && (count = getLine(buf)) > 0) {
1537 if (config->debugHttpd) fprintf(stderr, "Header: '%s'\n", buf);
1540 #ifdef CONFIG_FEATURE_HTTPD_CGI
1541 /* try and do our best to parse more lines */
1542 if ((strncasecmp(buf, Content_length, 15) == 0)) {
1543 if(prequest != request_GET)
1544 length = strtol(buf + 15, 0, 0); // extra read only for POST
1545 } else if ((strncasecmp(buf, "Cookie:", 7) == 0)) {
1546 for(test = buf + 7; isspace(*test); test++)
1548 cookie = strdup(test);
1552 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1553 if (strncasecmp(buf, "Authorization:", 14) == 0) {
1554 /* We only allow Basic credentials.
1555 * It shows up as "Authorization: Basic <userid:password>" where
1556 * the userid:password is base64 encoded.
1558 for(test = buf + 14; isspace(*test); test++)
1560 if (strncasecmp(test, "Basic", 5) != 0)
1563 test += 5; /* decodeBase64() skiping space self */
1565 credentials = checkPerm(url, test);
1567 #endif /* CONFIG_FEATURE_HTTPD_BASIC_AUTH */
1569 } /* while extra header reading */
1572 if (strcmp(strrchr(url, '/') + 1, httpd_conf) == 0 || ip_allowed == 0) {
1573 /* protect listing [/path]/httpd_conf or IP deny */
1574 #ifdef CONFIG_FEATURE_HTTPD_CGI
1575 FORBIDDEN: /* protect listing /cgi-bin */
1577 sendHeaders(HTTP_FORBIDDEN);
1581 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1582 if (credentials <= 0 && checkPerm(url, ":") == 0) {
1583 sendHeaders(HTTP_UNAUTHORIZED);
1588 test = url + 1; /* skip first '/' */
1590 #ifdef CONFIG_FEATURE_HTTPD_CGI
1591 /* if strange Content-Length */
1592 if (length < 0 || length > MAX_POST_SIZE)
1596 body = malloc(length + 1);
1598 length = bb_full_read(a_c_r, body, length);
1599 if(length < 0) // closed
1601 body[length] = 0; // always null terminate for safety
1605 if (strncmp(test, "cgi-bin", 7) == 0) {
1606 if(test[7] == '/' && test[8] == 0)
1607 goto FORBIDDEN; // protect listing cgi-bin/
1608 sendCgi(url, prequest, urlArgs, body, length, cookie);
1610 if (prequest != request_GET)
1611 sendHeaders(HTTP_NOT_IMPLEMENTED);
1613 #endif /* CONFIG_FEATURE_HTTPD_CGI */
1615 strcpy(purl, "index.html");
1616 if ( stat(test, &sb ) == 0 ) {
1617 config->ContentLength = sb.st_size;
1618 config->last_mod = sb.st_mtime;
1620 sendFile(test, buf);
1621 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1622 /* unset if non inetd looped */
1623 config->ContentLength = -1;
1626 #ifdef CONFIG_FEATURE_HTTPD_CGI
1634 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1635 /* from inetd don`t looping: freeing, closing automatic from exit always */
1637 if (config->debugHttpd) fprintf(stderr, "closing socket\n");
1639 # ifdef CONFIG_FEATURE_HTTPD_CGI
1643 shutdown(a_c_w, SHUT_WR);
1644 shutdown(a_c_r, SHUT_RD);
1645 close(config->accepted_socket);
1646 #endif /* CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY */
1649 /****************************************************************************
1651 > $Function: miniHttpd()
1653 * $Description: The main http server function.
1655 * Given an open socket fildes, listen for new connections and farm out
1656 * the processing as a forked process.
1659 * (int) server. . . The server socket fildes.
1661 * $Return: (int) . . . . Always 0.
1663 ****************************************************************************/
1664 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1665 static int miniHttpd(int server)
1667 fd_set readfd, portfd;
1670 FD_SET(server, &portfd);
1672 /* copy the ports we are watching to the readfd set */
1676 /* Now wait INDEFINATELY on the set of sockets! */
1677 if (select(server + 1, &readfd, 0, 0, 0) > 0) {
1678 if (FD_ISSET(server, &readfd)) {
1680 struct sockaddr_in fromAddr;
1683 socklen_t fromAddrLen = sizeof(fromAddr);
1684 int s = accept(server,
1685 (struct sockaddr *)&fromAddr, &fromAddrLen);
1690 config->accepted_socket = s;
1691 addr = ntohl(fromAddr.sin_addr.s_addr);
1692 sprintf(config->rmt_ip, "%u.%u.%u.%u",
1693 (unsigned char)(addr >> 24),
1694 (unsigned char)(addr >> 16),
1695 (unsigned char)(addr >> 8),
1697 config->port = ntohs(fromAddr.sin_port);
1699 if (config->debugHttpd) {
1700 bb_error_msg("connection from IP=%s, port %u\n",
1701 config->rmt_ip, config->port);
1704 /* set the KEEPALIVE option to cull dead connections */
1706 setsockopt(s, SOL_SOCKET, SO_KEEPALIVE, (void *)&on, sizeof (on));
1708 if (config->debugHttpd || fork() == 0) {
1709 /* This is the spawned thread */
1710 #ifdef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
1711 /* protect reload config, may be confuse checking */
1712 signal(SIGHUP, SIG_IGN);
1715 if(!config->debugHttpd)
1728 static int miniHttpd(void)
1730 struct sockaddr_in fromAddrLen;
1731 socklen_t sinlen = sizeof (struct sockaddr_in);
1734 getpeername (0, (struct sockaddr *)&fromAddrLen, &sinlen);
1735 addr = ntohl(fromAddrLen.sin_addr.s_addr);
1736 sprintf(config->rmt_ip, "%u.%u.%u.%u",
1737 (unsigned char)(addr >> 24),
1738 (unsigned char)(addr >> 16),
1739 (unsigned char)(addr >> 8),
1741 config->port = ntohs(fromAddrLen.sin_port);
1745 #endif /* CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY */
1747 #ifdef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
1748 static void sighup_handler(int sig)
1751 struct sigaction sa;
1753 sa.sa_handler = sighup_handler;
1754 sigemptyset(&sa.sa_mask);
1755 sa.sa_flags = SA_RESTART;
1756 sigaction(SIGHUP, &sa, NULL);
1757 parse_conf(default_path_httpd_conf,
1758 sig == SIGHUP ? SIGNALED_PARSE : FIRST_PARSE);
1763 static const char httpd_opts[]="c:d:h:"
1764 #ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
1770 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1772 # ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
1774 # define OPT_INC_2 2
1776 # define OPT_INC_2 1
1781 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1783 #ifdef CONFIG_FEATURE_HTTPD_SETUID
1786 #endif /* CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY */
1789 #define OPT_CONFIG_FILE (1<<0)
1790 #define OPT_DECODE_URL (1<<1)
1791 #define OPT_HOME_HTTPD (1<<2)
1792 #define OPT_ENCODE_URL (1<<(2+OPT_INC_1))
1793 #define OPT_REALM (1<<(3+OPT_INC_1))
1794 #define OPT_MD5 (1<<(4+OPT_INC_1))
1795 #define OPT_PORT (1<<(3+OPT_INC_1+OPT_INC_2))
1796 #define OPT_DEBUG (1<<(4+OPT_INC_1+OPT_INC_2))
1797 #define OPT_SETUID (1<<(5+OPT_INC_1+OPT_INC_2))
1800 #ifdef HTTPD_STANDALONE
1801 int main(int argc, char *argv[])
1803 int httpd_main(int argc, char *argv[])
1807 const char *home_httpd = home;
1808 char *url_for_decode;
1809 #ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
1810 const char *url_for_encode;
1812 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1816 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1820 #ifdef CONFIG_FEATURE_HTTPD_SETUID
1825 #ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
1829 config = xcalloc(1, sizeof(*config));
1830 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1831 config->realm = "Web Server Authentication";
1834 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1838 config->ContentLength = -1;
1840 opt = bb_getopt_ulflags(argc, argv, httpd_opts,
1841 &(config->configFile), &url_for_decode, &home_httpd
1842 #ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
1845 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1847 # ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
1851 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1853 #ifdef CONFIG_FEATURE_HTTPD_SETUID
1859 if(opt & OPT_DECODE_URL) {
1860 printf("%s", decodeString(url_for_decode, 1));
1863 #ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
1864 if(opt & OPT_ENCODE_URL) {
1865 printf("%s", encodeString(url_for_encode));
1869 #ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
1871 printf("%s\n", pw_encrypt(pass, "$1$"));
1875 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1877 config->port = bb_xgetlarg(s_port, 10, 1, 0xffff);
1878 config->debugHttpd = opt & OPT_DEBUG;
1879 #ifdef CONFIG_FEATURE_HTTPD_SETUID
1880 if(opt & OPT_SETUID) {
1883 uid = strtol(s_uid, &e, 0);
1886 uid = my_getpwnam(s_uid);
1892 if(chdir(home_httpd)) {
1893 bb_perror_msg_and_die("can`t chdir to %s", home_httpd);
1895 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1896 server = openServer();
1897 # ifdef CONFIG_FEATURE_HTTPD_SETUID
1898 /* drop privilegies */
1902 # ifdef CONFIG_FEATURE_HTTPD_CGI
1903 addEnvPort("SERVER");
1907 #ifdef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
1910 parse_conf(default_path_httpd_conf, FIRST_PARSE);
1913 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1914 if (!config->debugHttpd) {
1915 if (daemon(1, 0) < 0) /* don`t change curent directory */
1916 bb_perror_msg_and_die("daemon");
1918 return miniHttpd(server);