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[] = "./";
130 // Note: bussybox xfuncs are not used because we want the server to keep running
131 // if something bad happens due to a malformed user request.
132 // As a result, all memory allocation after daemonize
133 // is checked rigorously
137 /* Configure options, disabled by default as custom httpd feature */
139 /* disabled as optional features */
140 //#define CONFIG_FEATURE_HTTPD_SET_CGI_VARS_TO_ENV
141 //#define CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
142 //#define CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
143 //#define CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
144 //#define CONFIG_FEATURE_HTTPD_SETUID
145 //#define CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
147 /* If set, use this server from internet superserver only */
148 //#define CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
150 /* You can use this server as standalone, require libbb.a for linking */
151 //#define HTTPD_STANDALONE
153 /* Config options, disable this for do very small module */
154 //#define CONFIG_FEATURE_HTTPD_CGI
155 //#define CONFIG_FEATURE_HTTPD_BASIC_AUTH
156 //#define CONFIG_FEATURE_HTTPD_AUTH_MD5
158 #ifdef HTTPD_STANDALONE
159 /* standalone, enable all features */
160 #undef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
161 /* unset config option for remove warning as redefined */
162 #undef CONFIG_FEATURE_HTTPD_BASIC_AUTH
163 #undef CONFIG_FEATURE_HTTPD_AUTH_MD5
164 #undef CONFIG_FEATURE_HTTPD_SET_CGI_VARS_TO_ENV
165 #undef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
166 #undef CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
167 #undef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
168 #undef CONFIG_FEATURE_HTTPD_CGI
169 #undef CONFIG_FEATURE_HTTPD_SETUID
170 #undef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
171 /* enable all features now */
172 #define CONFIG_FEATURE_HTTPD_BASIC_AUTH
173 #define CONFIG_FEATURE_HTTPD_AUTH_MD5
174 #define CONFIG_FEATURE_HTTPD_SET_CGI_VARS_TO_ENV
175 #define CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
176 #define CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
177 #define CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
178 #define CONFIG_FEATURE_HTTPD_CGI
179 #define CONFIG_FEATURE_HTTPD_SETUID
180 #define CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
182 /* require from libbb.a for linking */
183 const char *bb_applet_name = "httpd";
185 void bb_show_usage(void)
187 fprintf(stderr, "Usage: %s [-p <port>] [-c configFile] [-d/-e <string>] "
188 "[-r realm] [-u user] [-h homedir]\n", bb_applet_name);
193 #ifdef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
194 #undef CONFIG_FEATURE_HTTPD_SETUID /* use inetd user.group config settings */
195 #undef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP /* so is not daemon */
196 /* inetd set stderr to accepted socket and we can`t true see debug messages */
200 /* CGI environ size */
201 #ifdef CONFIG_FEATURE_HTTPD_SET_CGI_VARS_TO_ENV
202 #define ENVSIZE 70 /* set max CGI variable */
204 #define ENVSIZE 15 /* minimal requires */
207 #define MAX_POST_SIZE (64*1024) /* 64k. Its Small? May be ;) */
209 #define MAX_MEMORY_BUFF 8192 /* IO buffer */
211 typedef struct HT_ACCESS {
213 struct HT_ACCESS *next;
214 char before_colon[1]; /* really bigger, must last */
219 #ifdef CONFIG_FEATURE_HTTPD_CGI
220 char *envp[ENVSIZE+1];
223 char buf[MAX_MEMORY_BUFF];
225 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
228 const char *configFile;
230 char rmt_ip[16]; /* for set env REMOTE_ADDR */
231 unsigned port; /* server initial port and for
232 set env REMOTE_PORT */
234 const char *found_mime_type;
235 off_t ContentLength; /* -1 - unknown */
238 Htaccess *ip_a_d; /* config allow/deny lines */
240 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
241 Htaccess *auth; /* config user:password lines */
243 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
244 Htaccess *mime_a; /* config mime types */
247 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
249 #define a_c_r config->accepted_socket
250 #define a_c_w config->accepted_socket
251 int debugHttpd; /* if seted, don`t stay daemon */
258 static HttpdConfig *config;
260 static const char request_GET[] = "GET"; /* size algorithic optimize */
262 static const char* const suffixTable [] = {
263 /* Warning: shorted equalent suffix in one line must be first */
264 ".htm.html", "text/html",
265 ".jpg.jpeg", "image/jpeg",
268 ".txt.h.c.cc.cpp", "text/plain",
271 ".avi", "video/x-msvideo",
272 ".qt.mov", "video/quicktime",
273 ".mpe.mpeg", "video/mpeg",
274 ".mid.midi", "audio/midi",
275 ".mp3", "audio/mpeg",
276 #if 0 /* unpopular */
277 ".au", "audio/basic",
278 ".pac", "application/x-ns-proxy-autoconfig",
279 ".vrml.wrl", "model/vrml",
281 0, "application/octet-stream" /* default */
287 HTTP_UNAUTHORIZED = 401, /* authentication needed, respond with auth hdr */
288 HTTP_NOT_FOUND = 404,
289 HTTP_NOT_IMPLEMENTED = 501, /* used for unrecognized requests */
290 HTTP_BAD_REQUEST = 400, /* malformed syntax */
291 HTTP_FORBIDDEN = 403,
292 HTTP_INTERNAL_SERVER_ERROR = 500,
293 #if 0 /* future use */
295 HTTP_SWITCHING_PROTOCOLS = 101,
298 HTTP_NON_AUTHORITATIVE_INFO = 203,
299 HTTP_NO_CONTENT = 204,
300 HTTP_MULTIPLE_CHOICES = 300,
301 HTTP_MOVED_PERMANENTLY = 301,
302 HTTP_MOVED_TEMPORARILY = 302,
303 HTTP_NOT_MODIFIED = 304,
304 HTTP_PAYMENT_REQUIRED = 402,
305 HTTP_BAD_GATEWAY = 502,
306 HTTP_SERVICE_UNAVAILABLE = 503, /* overload, maintenance */
307 HTTP_RESPONSE_SETSIZE=0xffffffff
313 HttpResponseNum type;
318 static const HttpEnumString httpResponseNames[] = {
320 { HTTP_NOT_IMPLEMENTED, "Not Implemented",
321 "The requested method is not recognized by this server." },
322 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
323 { HTTP_UNAUTHORIZED, "Unauthorized", "" },
325 { HTTP_NOT_FOUND, "Not Found",
326 "The requested URL was not found on this server." },
327 { HTTP_BAD_REQUEST, "Bad Request", "Unsupported method." },
328 { HTTP_FORBIDDEN, "Forbidden", "" },
329 { HTTP_INTERNAL_SERVER_ERROR, "Internal Server Error",
330 "Internal Server Error" },
331 #if 0 /* not implemented */
332 { HTTP_CREATED, "Created" },
333 { HTTP_ACCEPTED, "Accepted" },
334 { HTTP_NO_CONTENT, "No Content" },
335 { HTTP_MULTIPLE_CHOICES, "Multiple Choices" },
336 { HTTP_MOVED_PERMANENTLY, "Moved Permanently" },
337 { HTTP_MOVED_TEMPORARILY, "Moved Temporarily" },
338 { HTTP_NOT_MODIFIED, "Not Modified" },
339 { HTTP_BAD_GATEWAY, "Bad Gateway", "" },
340 { HTTP_SERVICE_UNAVAILABLE, "Service Unavailable", "" },
345 static const char RFC1123FMT[] = "%a, %d %b %Y %H:%M:%S GMT";
346 static const char Content_length[] = "Content-length:";
350 static void free_config_lines(Htaccess **pprev)
352 Htaccess *prev = *pprev;
355 Htaccess *cur = prev;
364 #define FIRST_PARSE 0
365 #define SUBDIR_PARSE 1
366 #define SIGNALED_PARSE 2
367 #define FIND_FROM_HTTPD_ROOT 3
368 /****************************************************************************
370 > $Function: parse_conf()
372 * $Description: parse configuration file into in-memory linked list.
374 * The first non-white character is examined to determine if the config line
375 * is one of the following:
376 * .ext:mime/type # new mime type not compiled into httpd
377 * [adAD]:from # ip address allow/deny, * for wildcard
378 * /path:user:pass # username/password
380 * Any previous IP rules are discarded.
381 * If the flag argument is not SUBDIR_PARSE then all /path and mime rules
382 * are also discarded. That is, previous settings are retained if flag is
386 * (const char *) path . . null for ip address checks, path for password
388 * (int) flag . . . . . . the source of the parse request.
392 ****************************************************************************/
393 static void parse_conf(const char *path, int flag)
397 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
401 const char *cf = config->configFile;
406 /* free previous ip setup if present */
407 free_config_lines(&config->ip_a_d);
408 config->flg_deny_all = 0;
409 /* retain previous auth and mime config only for subdir parse */
410 if(flag != SUBDIR_PARSE) {
411 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
412 free_config_lines(&config->auth)
414 ; /* appease compiler warnings if option is not set */
415 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
416 free_config_lines(&config->mime_a);
420 if(flag == SUBDIR_PARSE || cf == NULL) {
421 cf = alloca(strlen(path) + sizeof(httpd_conf) + 2);
423 if(flag == FIRST_PARSE)
424 bb_error_msg_and_die(bb_msg_memory_exhausted);
427 sprintf((char *)cf, "%s/%s", path, httpd_conf);
430 while((f = fopen(cf, "r")) == NULL) {
431 if(flag == SUBDIR_PARSE || flag == FIND_FROM_HTTPD_ROOT) {
432 /* config file not found, no changes to config */
435 if(config->configFile && flag == FIRST_PARSE) /* if -c option given */
436 bb_perror_msg_and_die("%s", cf);
437 flag = FIND_FROM_HTTPD_ROOT;
441 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
444 /* This could stand some work */
445 while ( (p0 = fgets(buf, sizeof(buf), f)) != NULL) {
447 for(p = p0; *p0 != 0 && *p0 != '#'; p0++) {
450 if(*p0 == ':' && c == NULL)
456 /* test for empty or strange line */
457 if (c == NULL || *c == 0)
464 /* memorize deny all */
465 config->flg_deny_all++;
467 /* skip default other "word:*" config lines */
474 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
477 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
483 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
485 /* make full path from httpd root / curent_path / config_line_path */
486 cf = flag == SUBDIR_PARSE ? path : "";
487 p0 = malloc(strlen(cf) + (c - buf) + 2 + strlen(c));
491 sprintf(p0, "/%s%s", cf, buf);
493 /* another call bb_simplify_path */
498 if (*cf == '/') { /* skip duplicate (or initial) slash */
500 } else if (*cf == '.') {
501 if (cf[1] == '/' || cf[1] == 0) { /* remove extra '.' */
503 } else if ((cf[1] == '.') && (cf[2] == '/' || cf[2] == 0)) {
506 while (*--p != '/'); /* omit previous dir */
515 if ((p == p0) || (*p != '/')) { /* not a trailing slash */
516 ++p; /* so keep last character */
519 sprintf(p0, "%s:%s", p0, c);
522 /* storing current config line */
524 cur = calloc(1, sizeof(Htaccess) + strlen(p0));
526 cf = strcpy(cur->before_colon, p0);
529 cur->after_colon = c;
530 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
534 if(*cf == 'A' || *cf == 'D') {
536 /* Deny:form_IP move top */
537 cur->next = config->ip_a_d;
538 config->ip_a_d = cur;
540 /* add to bottom A:form_IP config line */
541 Htaccess *prev_IP = config->ip_a_d;
543 if(prev_IP == NULL) {
544 config->ip_a_d = cur;
547 prev_IP = prev_IP->next;
552 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
553 else if(*cf == '.') {
554 /* config .mime line move top for overwrite previous */
555 cur->next = config->mime_a;
556 config->mime_a = cur;
560 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
561 else if(prev == NULL) {
563 config->auth = prev = cur;
565 /* sort path, if current lenght eq or bigger then move up */
566 Htaccess *prev_hti = config->auth;
570 for(hti = prev_hti; hti; hti = hti->next) {
571 if(l >= strlen(hti->before_colon)) {
572 /* insert before hti */
574 if(prev_hti != hti) {
575 prev_hti->next = cur;
583 prev_hti = prev_hti->next;
585 if(!hti) { /* not inserted, add to bottom */
596 #ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
597 /****************************************************************************
599 > $Function: encodeString()
601 * $Description: Given a string, html encode special characters.
602 * This is used for the -e command line option to provide an easy way
603 * for scripts to encode result data without confusing browsers. The
604 * returned string pointer is memory allocated by malloc().
607 * (const char *) string . . The first string to encode.
609 * $Return: (char *) . . . .. . . A pointer to the encoded string.
611 * $Errors: Returns a null string ("") if memory is not available.
613 ****************************************************************************/
614 static char *encodeString(const char *string)
616 /* take the simple route and encode everything */
617 /* could possibly scan once to get length. */
618 int len = strlen(string);
619 char *out = malloc(len*5 +1);
624 while ((ch = *string++)) {
625 // very simple check for what to encode
626 if (isalnum(ch)) *p++ = ch;
627 else p += sprintf(p, "&#%d", (unsigned char) ch);
632 #endif /* CONFIG_FEATURE_HTTPD_ENCODE_URL_STR */
634 /****************************************************************************
636 > $Function: decodeString()
638 * $Description: Given a URL encoded string, convert it to plain ascii.
639 * Since decoding always makes strings smaller, the decode is done in-place.
640 * Thus, callers should strdup() the argument if they do not want the
641 * argument modified. The return is the original pointer, allowing this
642 * function to be easily used as arguments to other functions.
645 * (char *) string . . . The first string to decode.
646 * (int) flag . . . 1 if require decode '+' as ' ' for CGI
648 * $Return: (char *) . . . . A pointer to the decoded string (same as input).
652 ****************************************************************************/
653 static char *decodeString(char *orig, int flag_plus_to_space)
655 /* note that decoded string is always shorter than original */
661 if (*ptr == '+' && flag_plus_to_space) { *string++ = ' '; ptr++; }
662 else if (*ptr != '%') *string++ = *ptr++;
665 sscanf(ptr+1, "%2X", &value);
675 #ifdef CONFIG_FEATURE_HTTPD_CGI
676 /****************************************************************************
678 > $Function: addEnv()
680 * $Description: Add an enviornment variable setting to the global list.
681 * A NAME=VALUE string is allocated, filled, and added to the list of
682 * environment settings passed to the cgi execution script.
685 * (char *) name_before_underline - The first part environment variable name.
686 * (char *) name_after_underline - The second part environment variable name.
687 * (char *) value . . The value to which the env variable is set.
691 * $Errors: Silently returns if the env runs out of space to hold the new item
693 ****************************************************************************/
694 static void addEnv(const char *name_before_underline,
695 const char *name_after_underline, const char *value)
698 const char *underline;
700 if (config->envCount >= ENVSIZE)
704 underline = *name_after_underline ? "_" : "";
705 asprintf(&s, "%s%s%s=%s", name_before_underline, underline,
706 name_after_underline, value);
708 config->envp[config->envCount++] = s;
709 config->envp[config->envCount] = 0;
713 #if defined(CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV) || !defined(CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY)
714 /* set environs SERVER_PORT and REMOTE_PORT */
715 static void addEnvPort(const char *port_name)
719 sprintf(buf, "%u", config->port);
720 addEnv(port_name, "PORT", buf);
723 #endif /* CONFIG_FEATURE_HTTPD_CGI */
725 #ifdef CONFIG_FEATURE_HTTPD_SET_CGI_VARS_TO_ENV
726 /****************************************************************************
728 > $Function: addEnvCgi
730 * $Description: Create environment variables given a URL encoded arg list.
731 * For each variable setting the URL encoded arg list, create a corresponding
732 * environment variable. URL encoded arguments have the form
733 * name1=value1&name2=value2&name3=&ignores
734 * from this example, name3 set empty value, tail without '=' skiping
737 * (char *) pargs . . . . A pointer to the URL encoded arguments.
743 ****************************************************************************/
744 static void addEnvCgi(const char *pargs)
748 char *namelist; /* space separated list of arg names */
749 if (pargs==0) return;
751 /* args are a list of name=value&name2=value2 sequences */
752 namelist = (char *) malloc(strlen(pargs));
753 if (namelist) namelist[0]=0;
754 memargs = args = strdup(pargs);
755 while (args && *args) {
756 const char *name = args;
757 char *value = strchr(args, '=');
759 if (!value) /* &XXX without '=' */
762 args = strchr(value, '&');
765 addEnv("CGI", name, decodeString(value, 1));
766 if (*namelist) strcat(namelist, " ");
767 strcat(namelist, name);
771 addEnv("CGI", "ARGLIST_", namelist);
775 #endif /* CONFIG_FEATURE_HTTPD_SET_CGI_VARS_TO_ENV */
778 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
779 /****************************************************************************
781 > $Function: decodeBase64()
783 > $Description: Decode a base 64 data stream as per rfc1521.
784 * Note that the rfc states that none base64 chars are to be ignored.
785 * Since the decode always results in a shorter size than the input, it is
786 * OK to pass the input arg as an output arg.
789 * (char *) Data . . . . A pointer to a base64 encoded string.
790 * Where to place the decoded data.
796 ****************************************************************************/
797 static void decodeBase64(char *Data)
800 const unsigned char *in = Data;
801 // The decoded size will be at most 3/4 the size of the encoded
802 unsigned long ch = 0;
808 if(t >= '0' && t <= '9')
810 else if(t >= 'A' && t <= 'Z')
812 else if(t >= 'a' && t <= 'z')
826 *Data++ = (char) (ch >> 16);
827 *Data++ = (char) (ch >> 8);
837 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
838 /****************************************************************************
840 > $Function: openServer()
842 * $Description: create a listen server socket on the designated port.
844 * $Return: (int) . . . A connection socket. -1 for errors.
848 ****************************************************************************/
849 static int openServer(void)
851 struct sockaddr_in lsocket;
854 /* create the socket right now */
855 /* inet_addr() returns a value that is already in network order */
856 memset(&lsocket, 0, sizeof(lsocket));
857 lsocket.sin_family = AF_INET;
858 lsocket.sin_addr.s_addr = INADDR_ANY;
859 lsocket.sin_port = htons(config->port) ;
860 fd = socket(AF_INET, SOCK_STREAM, 0);
862 /* tell the OS it's OK to reuse a previous address even though */
863 /* it may still be in a close down state. Allows bind to succeed. */
866 setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, (void *)&on, sizeof(on)) ;
868 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void *)&on, sizeof(on)) ;
870 if (bind(fd, (struct sockaddr *)&lsocket, sizeof(lsocket)) == 0) {
872 signal(SIGCHLD, SIG_IGN); /* prevent zombie (defunct) processes */
874 bb_perror_msg_and_die("bind");
877 bb_perror_msg_and_die("create socket");
881 #endif /* CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY */
883 /****************************************************************************
885 > $Function: sendHeaders()
887 * $Description: Create and send HTTP response headers.
888 * The arguments are combined and sent as one write operation. Note that
889 * IE will puke big-time if the headers are not sent in one packet and the
890 * second packet is delayed for any reason.
893 * (HttpResponseNum) responseNum . . . The result code to send.
895 * $Return: (int) . . . . writing errors
897 ****************************************************************************/
898 static int sendHeaders(HttpResponseNum responseNum)
900 char *buf = config->buf;
901 const char *responseString = "";
902 const char *infoString = 0;
904 time_t timer = time(0);
909 i < (sizeof(httpResponseNames)/sizeof(httpResponseNames[0])); i++) {
910 if (httpResponseNames[i].type == responseNum) {
911 responseString = httpResponseNames[i].name;
912 infoString = httpResponseNames[i].info;
916 if (responseNum != HTTP_OK) {
917 config->found_mime_type = "text/html"; // error message is HTML
920 /* emit the current date */
921 strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&timer));
923 "HTTP/1.0 %d %s\nContent-type: %s\r\n"
924 "Date: %s\r\nConnection: close\r\n",
925 responseNum, responseString, config->found_mime_type, timeStr);
927 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
928 if (responseNum == HTTP_UNAUTHORIZED) {
929 len += sprintf(buf+len, "WWW-Authenticate: Basic realm=\"%s\"\r\n",
933 if (config->ContentLength != -1) { /* file */
934 strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&config->last_mod));
935 len += sprintf(buf+len, "Last-Modified: %s\r\n%s %ld\r\n",
936 timeStr, Content_length, config->ContentLength);
941 len += sprintf(buf+len,
942 "<HEAD><TITLE>%d %s</TITLE></HEAD>\n"
943 "<BODY><H1>%d %s</H1>\n%s\n</BODY>\n",
944 responseNum, responseString,
945 responseNum, responseString, infoString);
948 if (config->debugHttpd) fprintf(stderr, "Headers: '%s'", buf);
950 return bb_full_write(a_c_w, buf, len);
953 /****************************************************************************
955 > $Function: getLine()
957 * $Description: Read from the socket until an end of line char found.
959 * Characters are read one at a time until an eol sequence is found.
962 * (char *) buf . . Where to place the read result.
964 * $Return: (int) . . . . number of characters read. -1 if error.
966 ****************************************************************************/
967 static int getLine(char *buf)
971 while (read(a_c_r, buf + count, 1) == 1) {
972 if (buf[count] == '\r') continue;
973 if (buf[count] == '\n') {
977 if(count < (MAX_MEMORY_BUFF-1)) /* check owerflow */
980 if (count) return count;
984 #ifdef CONFIG_FEATURE_HTTPD_CGI
985 /****************************************************************************
987 > $Function: sendCgi()
989 * $Description: Execute a CGI script and send it's stdout back
991 * Environment variables are set up and the script is invoked with pipes
992 * for stdin/stdout. If a post is being done the script is fed the POST
993 * data in addition to setting the QUERY_STRING variable (for GETs or POSTs).
996 * (const char *) url . . . The requested URL (with leading /).
997 * (const char *urlArgs). . Any URL arguments.
998 * (const char *body) . . . POST body contents.
999 * (int bodyLen) . . . . . Length of the post body.
1000 * (const char *cookie) . . For set HTTP_COOKIE.
1003 * $Return: (char *) . . . . A pointer to the decoded string (same as input).
1007 ****************************************************************************/
1008 static int sendCgi(const char *url,
1009 const char *request, const char *urlArgs,
1010 const char *body, int bodyLen, const char *cookie)
1012 int fromCgi[2]; /* pipe for reading data from CGI */
1013 int toCgi[2]; /* pipe for sending data to CGI */
1015 static char * argp[] = { 0, 0 };
1022 if (pipe(fromCgi) != 0) {
1025 if (pipe(toCgi) != 0) {
1038 char *purl = strdup( url );
1039 char realpath_buff[MAXPATHLEN];
1047 dup2(inFd, 0); // replace stdin with the pipe
1048 dup2(outFd, 1); // replace stdout with the pipe
1050 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1051 if (!config->debugHttpd)
1053 dup2(outFd, 2); // replace stderr with the pipe
1064 while((script = strchr( script + 1, '/' )) != NULL) {
1065 /* have script.cgi/PATH_INFO or dirs/script.cgi[/PATH_INFO] */
1069 if(is_directory(purl + 1, 1, &sb) == 0) {
1070 /* not directory, found script.cgi/PATH_INFO */
1074 *script = '/'; /* is directory, find next '/' */
1076 addEnv("PATH", "INFO", script); /* set /PATH_INFO or NULL */
1077 addEnv("PATH", "", getenv("PATH"));
1078 addEnv("REQUEST", "METHOD", request);
1080 char *uri = alloca(strlen(purl) + 2 + strlen(urlArgs));
1082 sprintf(uri, "%s?%s", purl, urlArgs);
1083 addEnv("REQUEST", "URI", uri);
1085 addEnv("REQUEST", "URI", purl);
1088 *script = '\0'; /* reduce /PATH_INFO */
1089 /* set SCRIPT_NAME as full path: /cgi-bin/dirs/script.cgi */
1090 addEnv("SCRIPT_NAME", "", purl);
1091 addEnv("QUERY_STRING", "", urlArgs);
1092 addEnv("SERVER", "SOFTWARE", httpdVersion);
1093 addEnv("SERVER", "PROTOCOL", "HTTP/1.0");
1094 addEnv("GATEWAY_INTERFACE", "", "CGI/1.1");
1095 #ifdef CONFIG_FEATURE_HTTPD_SET_REMOTE_PORT_TO_ENV
1096 addEnv("REMOTE", "ADDR", config->rmt_ip);
1097 addEnvPort("REMOTE");
1099 addEnv("REMOTE_ADDR", "", config->rmt_ip);
1104 sprintf(sbl, "%d", bodyLen);
1105 addEnv("CONTENT_LENGTH", "", sbl);
1108 addEnv("HTTP_COOKIE", "", cookie);
1110 #ifdef CONFIG_FEATURE_HTTPD_SET_CGI_VARS_TO_ENV
1111 if (request != request_GET) {
1118 /* set execve argp[0] without path */
1119 argp[0] = strrchr( purl, '/' ) + 1;
1120 /* but script argp[0] must have absolute path and chdiring to this */
1121 if(realpath(purl + 1, realpath_buff) != NULL) {
1122 script = strrchr(realpath_buff, '/');
1125 if(chdir(realpath_buff) == 0) {
1127 // now run the program. If it fails,
1128 // use _exit() so no destructors
1129 // get called and make a mess.
1130 execve(realpath_buff, argp, config->envp);
1134 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1135 config->accepted_socket = 1; /* send to stdout */
1137 sendHeaders(HTTP_NOT_FOUND);
1144 /* parent process */
1151 if (body) bb_full_write(outFd, body, bodyLen);
1155 struct timeval timeout;
1162 FD_SET(inFd, &readSet);
1164 /* Now wait on the set of sockets! */
1166 timeout.tv_usec = 10000;
1167 nfound = select(inFd + 1, &readSet, 0, 0, &timeout);
1170 if (waitpid(pid, &status, WNOHANG) > 0) {
1173 if (config->debugHttpd) {
1174 if (WIFEXITED(status))
1175 bb_error_msg("piped has exited with status=%d", WEXITSTATUS(status));
1176 if (WIFSIGNALED(status))
1177 bb_error_msg("piped has exited with signal=%d", WTERMSIG(status));
1186 // There is something to read
1187 count = bb_full_read(inFd, buf, sizeof(buf)-1);
1188 // If a read returns 0 at this point then some type of error has
1189 // occurred. Bail now.
1190 if (count == 0) break;
1193 /* check to see if the user script added headers */
1194 if (strncmp(buf, "HTTP/1.0 200 OK\n", 4) != 0) {
1195 bb_full_write(s, "HTTP/1.0 200 OK\n", 16);
1197 if (strstr(buf, "ontent-") == 0) {
1198 bb_full_write(s, "Content-type: text/plain\n\n", 26);
1202 bb_full_write(s, buf, count);
1204 if (config->debugHttpd)
1205 fprintf(stderr, "cgi read %d bytes\n", count);
1213 #endif /* CONFIG_FEATURE_HTTPD_CGI */
1215 /****************************************************************************
1217 > $Function: sendFile()
1219 * $Description: Send a file response to an HTTP request
1222 * (const char *) url . . The URL requested.
1223 * (char *) buf . . . . . The stack buffer.
1225 * $Return: (int) . . . . . . Always 0.
1227 ****************************************************************************/
1228 static int sendFile(const char *url, char *buf)
1232 const char * const * table;
1233 const char * try_suffix;
1235 suffix = strrchr(url, '.');
1237 for (table = suffixTable; *table; table += 2)
1238 if(suffix != NULL && (try_suffix = strstr(*table, suffix)) != 0) {
1239 try_suffix += strlen(suffix);
1240 if(*try_suffix == 0 || *try_suffix == '.')
1243 /* also, if not found, set default as "application/octet-stream"; */
1244 config->found_mime_type = *(table+1);
1245 #ifdef CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
1249 for (cur = config->mime_a; cur; cur = cur->next) {
1250 if(strcmp(cur->before_colon, suffix) == 0) {
1251 config->found_mime_type = cur->after_colon;
1256 #endif /* CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES */
1259 if (config->debugHttpd)
1260 fprintf(stderr, "Sending file '%s' Content-type: %s\n",
1261 url, config->found_mime_type);
1264 f = open(url, O_RDONLY);
1268 sendHeaders(HTTP_OK);
1269 while ((count = bb_full_read(f, buf, MAX_MEMORY_BUFF)) > 0) {
1270 bb_full_write(a_c_w, buf, count);
1275 if (config->debugHttpd)
1276 bb_perror_msg("Unable to open '%s'", url);
1278 sendHeaders(HTTP_NOT_FOUND);
1284 /****************************************************************************
1286 > $Function: checkPerm()
1288 * $Description: Check the permission file for access.
1290 * If config file isn't present, everything is allowed.
1291 * Entries are of the form you can see example from header source
1294 * (const char *) path . . . . The file path or NULL for ip addresses.
1295 * (const char *) request . . . User information to validate.
1297 * $Return: (int) . . . . . . . . . 1 if request OK, 0 otherwise.
1299 ****************************************************************************/
1301 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1302 static int checkPerm(const char *path, const char *request)
1308 int ipaddr = path == NULL;
1309 const char *prev = NULL;
1311 /* This could stand some work */
1312 for (cur = ipaddr ? config->ip_a_d : config->auth; cur; cur = cur->next) {
1313 p0 = cur->before_colon;
1314 if(prev != NULL && strcmp(prev, p0) != 0)
1315 continue; /* find next identical */
1316 p = cur->after_colon;
1318 if (config->debugHttpd)
1319 fprintf(stderr,"checkPerm: '%s' ? '%s'\n",
1320 (ipaddr ? (*p ? p : "*") : p0), request);
1323 if(strncmp(p, request, strlen(p)) != 0)
1325 return *p0 == 'A'; /* Allow/Deny */
1329 if(strncmp(p0, path, l) == 0 &&
1330 (l == 1 || path[l] == '/' || path[l] == 0)) {
1331 /* path match found. Check request */
1333 /* for check next /path:user:password */
1335 #ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
1339 char *u = strchr(request, ':');
1342 /* bad request, ':' required */
1345 if(strncmp(p, request, u-request) != 0) {
1346 /* user uncompared */
1349 pp = strchr(p, ':');
1350 if(pp && pp[1] == '$' && pp[2] == '1' &&
1351 pp[3] == '$' && pp[4]) {
1353 cipher = pw_encrypt(u+1, pp);
1354 if (strcmp(cipher, pp) == 0)
1361 if (strcmp(p, request) == 0)
1369 return !config->flg_deny_all;
1370 return prev == NULL;
1373 #else /* ifndef CONFIG_FEATURE_HTTPD_BASIC_AUTH */
1374 static int checkPermIP(const char *request)
1379 /* This could stand some work */
1380 for (cur = config->ip_a_d; cur; cur = cur->next) {
1381 p = cur->after_colon;
1383 if (config->debugHttpd)
1384 fprintf(stderr, "checkPerm: '%s' ? '%s'\n",
1385 (*p ? p : "*"), request);
1387 if(strncmp(p, request, strlen(p)) == 0)
1388 return *cur->before_colon == 'A'; /* Allow/Deny */
1391 /* if uncofigured, return 1 - access from all */
1392 return !config->flg_deny_all;
1394 #define checkPerm(null, request) checkPermIP(request)
1395 #endif /* CONFIG_FEATURE_HTTPD_BASIC_AUTH */
1398 /****************************************************************************
1400 > $Function: handleIncoming()
1402 * $Description: Handle an incoming http request.
1404 ****************************************************************************/
1405 static void handleIncoming(void)
1407 char *buf = config->buf;
1412 #ifdef CONFIG_FEATURE_HTTPD_CGI
1413 const char *prequest = request_GET;
1422 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1423 int credentials = -1; /* if not requred this is Ok */
1429 if (getLine(buf) <= 0)
1432 purl = strpbrk(buf, " \t");
1435 sendHeaders(HTTP_BAD_REQUEST);
1439 #ifdef CONFIG_FEATURE_HTTPD_CGI
1440 if(strcasecmp(buf, prequest) != 0) {
1442 if(strcasecmp(buf, prequest) != 0) {
1443 sendHeaders(HTTP_NOT_IMPLEMENTED);
1448 if(strcasecmp(buf, request_GET) != 0) {
1449 sendHeaders(HTTP_NOT_IMPLEMENTED);
1454 count = sscanf(purl, " %[^ ] HTTP/%d.%*d", buf, &blank);
1456 decodeString(buf, 0);
1457 if (count < 1 || buf[0] != '/') {
1458 /* Garbled request/URL */
1461 url = alloca(strlen(buf) + 12); /* + sizeof("/index.html\0") */
1463 sendHeaders(HTTP_INTERNAL_SERVER_ERROR);
1467 /* extract url args if present */
1468 urlArgs = strchr(url, '?');
1472 /* algorithm stolen from libbb bb_simplify_path(),
1473 but don`t strdup and reducing trailing slash and protect out root */
1478 if (*test == '/') { /* skip duplicate (or initial) slash */
1480 } else if (*test == '.') {
1481 if (test[1] == '/' || test[1] == 0) { /* skip extra '.' */
1483 } else if ((test[1] == '.') && (test[2] == '/' || test[2] == 0)) {
1486 /* protect out root */
1489 while (*--purl != '/'); /* omit previous dir */
1497 *++purl = 0; /* so keep last character */
1498 test = purl; /* end ptr */
1500 /* If URL is directory, adding '/' */
1501 if(test[-1] != '/') {
1502 if ( is_directory(url + 1, 1, &sb) ) {
1505 purl = test; /* end ptr */
1509 if (config->debugHttpd)
1510 fprintf(stderr, "url='%s', args=%s\n", url, urlArgs);
1514 ip_allowed = checkPerm(NULL, config->rmt_ip);
1515 while(ip_allowed && (test = strchr( test + 1, '/' )) != NULL) {
1516 /* have path1/path2 */
1518 if( is_directory(url + 1, 1, &sb) ) {
1519 /* may be having subdir config */
1520 parse_conf(url + 1, SUBDIR_PARSE);
1521 ip_allowed = checkPerm(NULL, config->rmt_ip);
1526 // read until blank line for HTTP version specified, else parse immediate
1527 while (blank >= 0 && (count = getLine(buf)) > 0) {
1530 if (config->debugHttpd) fprintf(stderr, "Header: '%s'\n", buf);
1533 #ifdef CONFIG_FEATURE_HTTPD_CGI
1534 /* try and do our best to parse more lines */
1535 if ((strncasecmp(buf, Content_length, 15) == 0)) {
1536 if(prequest != request_GET)
1537 length = strtol(buf + 15, 0, 0); // extra read only for POST
1538 } else if ((strncasecmp(buf, "Cookie:", 7) == 0)) {
1539 for(test = buf + 7; isspace(*test); test++)
1541 cookie = strdup(test);
1545 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1546 if (strncasecmp(buf, "Authorization:", 14) == 0) {
1547 /* We only allow Basic credentials.
1548 * It shows up as "Authorization: Basic <userid:password>" where
1549 * the userid:password is base64 encoded.
1551 for(test = buf + 14; isspace(*test); test++)
1553 if (strncasecmp(test, "Basic", 5) != 0)
1556 test += 5; /* decodeBase64() skiping space self */
1558 credentials = checkPerm(url, test);
1560 #endif /* CONFIG_FEATURE_HTTPD_BASIC_AUTH */
1562 } /* while extra header reading */
1565 if (strcmp(strrchr(url, '/') + 1, httpd_conf) == 0 || ip_allowed == 0) {
1566 /* protect listing [/path]/httpd_conf or IP deny */
1567 #ifdef CONFIG_FEATURE_HTTPD_CGI
1568 FORBIDDEN: /* protect listing /cgi-bin */
1570 sendHeaders(HTTP_FORBIDDEN);
1574 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1575 if (credentials <= 0 && checkPerm(url, ":") == 0) {
1576 sendHeaders(HTTP_UNAUTHORIZED);
1581 test = url + 1; /* skip first '/' */
1583 #ifdef CONFIG_FEATURE_HTTPD_CGI
1584 /* if strange Content-Length */
1585 if (length < 0 || length > MAX_POST_SIZE)
1589 body = malloc(length + 1);
1591 length = bb_full_read(a_c_r, body, length);
1592 if(length < 0) // closed
1594 body[length] = 0; // always null terminate for safety
1598 if (strncmp(test, "cgi-bin", 7) == 0) {
1599 if(test[7] == '/' && test[8] == 0)
1600 goto FORBIDDEN; // protect listing cgi-bin/
1601 sendCgi(url, prequest, urlArgs, body, length, cookie);
1603 if (prequest != request_GET)
1604 sendHeaders(HTTP_NOT_IMPLEMENTED);
1606 #endif /* CONFIG_FEATURE_HTTPD_CGI */
1608 strcpy(purl, "index.html");
1609 if ( stat(test, &sb ) == 0 ) {
1610 config->ContentLength = sb.st_size;
1611 config->last_mod = sb.st_mtime;
1613 sendFile(test, buf);
1614 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1615 /* unset if non inetd looped */
1616 config->ContentLength = -1;
1619 #ifdef CONFIG_FEATURE_HTTPD_CGI
1627 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1628 /* from inetd don`t looping: freeing, closing automatic from exit always */
1630 if (config->debugHttpd) fprintf(stderr, "closing socket\n");
1632 # ifdef CONFIG_FEATURE_HTTPD_CGI
1636 shutdown(a_c_w, SHUT_WR);
1637 shutdown(a_c_r, SHUT_RD);
1638 close(config->accepted_socket);
1639 #endif /* CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY */
1642 /****************************************************************************
1644 > $Function: miniHttpd()
1646 * $Description: The main http server function.
1648 * Given an open socket fildes, listen for new connections and farm out
1649 * the processing as a forked process.
1652 * (int) server. . . The server socket fildes.
1654 * $Return: (int) . . . . Always 0.
1656 ****************************************************************************/
1657 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1658 static int miniHttpd(int server)
1660 fd_set readfd, portfd;
1663 FD_SET(server, &portfd);
1665 /* copy the ports we are watching to the readfd set */
1669 /* Now wait INDEFINATELY on the set of sockets! */
1670 if (select(server + 1, &readfd, 0, 0, 0) > 0) {
1671 if (FD_ISSET(server, &readfd)) {
1673 struct sockaddr_in fromAddr;
1676 socklen_t fromAddrLen = sizeof(fromAddr);
1677 int s = accept(server,
1678 (struct sockaddr *)&fromAddr, &fromAddrLen);
1683 config->accepted_socket = s;
1684 addr = ntohl(fromAddr.sin_addr.s_addr);
1685 sprintf(config->rmt_ip, "%u.%u.%u.%u",
1686 (unsigned char)(addr >> 24),
1687 (unsigned char)(addr >> 16),
1688 (unsigned char)(addr >> 8),
1690 config->port = ntohs(fromAddr.sin_port);
1692 if (config->debugHttpd) {
1693 bb_error_msg("connection from IP=%s, port %u\n",
1694 config->rmt_ip, config->port);
1697 /* set the KEEPALIVE option to cull dead connections */
1699 setsockopt(s, SOL_SOCKET, SO_KEEPALIVE, (void *)&on, sizeof (on));
1701 if (config->debugHttpd || fork() == 0) {
1702 /* This is the spawned thread */
1703 #ifdef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
1704 /* protect reload config, may be confuse checking */
1705 signal(SIGHUP, SIG_IGN);
1708 if(!config->debugHttpd)
1721 static int miniHttpd(void)
1723 struct sockaddr_in fromAddrLen;
1724 socklen_t sinlen = sizeof (struct sockaddr_in);
1727 getpeername (0, (struct sockaddr *)&fromAddrLen, &sinlen);
1728 addr = ntohl(fromAddrLen.sin_addr.s_addr);
1729 sprintf(config->rmt_ip, "%u.%u.%u.%u",
1730 (unsigned char)(addr >> 24),
1731 (unsigned char)(addr >> 16),
1732 (unsigned char)(addr >> 8),
1734 config->port = ntohs(fromAddrLen.sin_port);
1738 #endif /* CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY */
1740 #ifdef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
1741 static void sighup_handler(int sig)
1744 struct sigaction sa;
1746 sa.sa_handler = sighup_handler;
1747 sigemptyset(&sa.sa_mask);
1748 sa.sa_flags = SA_RESTART;
1749 sigaction(SIGHUP, &sa, NULL);
1750 parse_conf(default_path_httpd_conf,
1751 sig == SIGHUP ? SIGNALED_PARSE : FIRST_PARSE);
1756 static const char httpd_opts[]="c:d:h:"
1757 #ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
1763 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1765 # ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
1767 # define OPT_INC_2 2
1769 # define OPT_INC_2 1
1774 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1776 #ifdef CONFIG_FEATURE_HTTPD_SETUID
1779 #endif /* CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY */
1782 #define OPT_CONFIG_FILE (1<<0)
1783 #define OPT_DECODE_URL (1<<1)
1784 #define OPT_HOME_HTTPD (1<<2)
1785 #define OPT_ENCODE_URL (1<<(2+OPT_INC_1))
1786 #define OPT_REALM (1<<(3+OPT_INC_1))
1787 #define OPT_MD5 (1<<(4+OPT_INC_1))
1788 #define OPT_PORT (1<<(3+OPT_INC_1+OPT_INC_2))
1789 #define OPT_DEBUG (1<<(4+OPT_INC_1+OPT_INC_2))
1790 #define OPT_SETUID (1<<(5+OPT_INC_1+OPT_INC_2))
1793 #ifdef HTTPD_STANDALONE
1794 int main(int argc, char *argv[])
1796 int httpd_main(int argc, char *argv[])
1800 const char *home_httpd = home;
1801 char *url_for_decode;
1802 #ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
1803 const char *url_for_encode;
1805 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1809 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1813 #ifdef CONFIG_FEATURE_HTTPD_SETUID
1818 #ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
1822 config = xcalloc(1, sizeof(*config));
1823 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1824 config->realm = "Web Server Authentication";
1827 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1831 config->ContentLength = -1;
1833 opt = bb_getopt_ulflags(argc, argv, httpd_opts,
1834 &(config->configFile), &url_for_decode, &home_httpd
1835 #ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
1838 #ifdef CONFIG_FEATURE_HTTPD_BASIC_AUTH
1840 # ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
1844 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1846 #ifdef CONFIG_FEATURE_HTTPD_SETUID
1852 if(opt & OPT_DECODE_URL) {
1853 printf("%s", decodeString(url_for_decode, 1));
1856 #ifdef CONFIG_FEATURE_HTTPD_ENCODE_URL_STR
1857 if(opt & OPT_ENCODE_URL) {
1858 printf("%s", encodeString(url_for_encode));
1862 #ifdef CONFIG_FEATURE_HTTPD_AUTH_MD5
1864 printf("%s\n", pw_encrypt(pass, "$1$"));
1868 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1870 config->port = bb_xgetlarg(s_port, 10, 1, 0xffff);
1871 config->debugHttpd = opt & OPT_DEBUG;
1872 #ifdef CONFIG_FEATURE_HTTPD_SETUID
1873 if(opt & OPT_SETUID) {
1876 uid = strtol(s_uid, &e, 0);
1879 uid = my_getpwnam(s_uid);
1885 if(chdir(home_httpd)) {
1886 bb_perror_msg_and_die("can`t chdir to %s", home_httpd);
1888 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1889 server = openServer();
1890 # ifdef CONFIG_FEATURE_HTTPD_SETUID
1891 /* drop privilegies */
1895 # ifdef CONFIG_FEATURE_HTTPD_CGI
1896 addEnvPort("SERVER");
1900 #ifdef CONFIG_FEATURE_HTTPD_RELOAD_CONFIG_SIGHUP
1903 parse_conf(default_path_httpd_conf, FIRST_PARSE);
1906 #ifndef CONFIG_FEATURE_HTTPD_USAGE_FROM_INETD_ONLY
1907 if (!config->debugHttpd) {
1908 if (daemon(1, 0) < 0) /* don`t change curent directory */
1909 bb_perror_msg_and_die("daemon");
1911 return miniHttpd(server);