bozohttpd.h revision 1.58
1 /* $NetBSD: bozohttpd.h,v 1.58 2019/01/22 05:32:57 mrg Exp $ */ 2 3 /* $eterna: bozohttpd.h,v 1.39 2011/11/18 09:21:15 mrg Exp $ */ 4 5 /* 6 * Copyright (c) 1997-2018 Matthew R. Green 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer and 16 * dedication in the documentation and/or other materials provided 17 * with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 */ 32 #ifndef BOZOHTTOPD_H_ 33 #define BOZOHTTOPD_H_ 1 34 35 #include "netbsd_queue.h" 36 37 #include <stdbool.h> 38 39 #include <sys/stat.h> 40 41 #ifndef NO_LUA_SUPPORT 42 #include <lua.h> 43 #endif 44 #include <stdio.h> 45 46 /* QNX provides a lot of NetBSD things in nbutil.h */ 47 #ifdef HAVE_NBUTIL_H 48 #include <nbutil.h> 49 #endif 50 51 /* lots of "const" but gets free()'ed etc at times, sigh */ 52 53 /* headers */ 54 typedef struct bozoheaders { 55 /*const*/ char *h_header; 56 /*const*/ char *h_value; /* this gets free()'ed etc at times */ 57 SIMPLEQ_ENTRY(bozoheaders) h_next; 58 } bozoheaders_t; 59 SIMPLEQ_HEAD(qheaders, bozoheaders); 60 61 #ifndef NO_LUA_SUPPORT 62 typedef struct lua_handler { 63 const char *name; 64 int ref; 65 SIMPLEQ_ENTRY(lua_handler) h_next; 66 } lua_handler_t; 67 68 typedef struct lua_state_map { 69 const char *script; 70 const char *prefix; 71 lua_State *L; 72 SIMPLEQ_HEAD(, lua_handler) handlers; 73 SIMPLEQ_ENTRY(lua_state_map) s_next; 74 } lua_state_map_t; 75 #endif 76 77 typedef struct bozo_content_map_t { 78 const char *name; /* postfix of file */ 79 const char *type; /* matching content-type */ 80 const char *encoding; /* matching content-encoding */ 81 const char *encoding11; /* matching content-encoding (HTTP/1.1) */ 82 const char *cgihandler; /* optional CGI handler */ 83 } bozo_content_map_t; 84 85 /* this struct holds the bozo constants */ 86 typedef struct bozo_consts_t { 87 const char *http_09; /* "HTTP/0.9" */ 88 const char *http_10; /* "HTTP/1.0" */ 89 const char *http_11; /* "HTTP/1.1" */ 90 const char *text_plain; /* "text/plain" */ 91 } bozo_consts_t; 92 93 /* this structure encapsulates all the bozo flags and control vars */ 94 typedef struct bozohttpd_t { 95 char *rootdir; /* root directory */ 96 int numeric; /* avoid gethostby*() */ 97 char *virtbase; /* virtual directory base */ 98 int unknown_slash; /* unknown vhosts go to normal slashdir */ 99 int logstderr; /* log to stderr (even if not tty) */ 100 int background; /* drop into daemon mode */ 101 int foreground; /* keep daemon mode in foreground */ 102 char *pidfile; /* path to the pid file, if any */ 103 size_t page_size; /* page size */ 104 char *slashdir; /* www slash directory */ 105 char *bindport; /* bind port; default "http" */ 106 char *bindaddress; /* address for binding - INADDR_ANY */ 107 int debug; /* debugging level */ 108 char *virthostname; /* my name */ 109 const char *server_software;/* our brand :-) */ 110 const char *index_html; /* our home page */ 111 const char *public_html; /* ~user/public_html page */ 112 int enable_users; /* enable public_html */ 113 int enable_cgi_users; /* use the cgi handler */ 114 int *sock; /* bound sockets */ 115 int nsock; /* number of above */ 116 struct pollfd *fds; /* current poll fd set */ 117 int request_times; /* # times a request was processed */ 118 int dir_indexing; /* handle directories */ 119 int hide_dots; /* hide .* */ 120 int process_cgi; /* use the cgi handler */ 121 char *cgibin; /* cgi-bin directory */ 122 unsigned initial_timeout;/* first line timeout */ 123 unsigned header_timeout; /* header lines timeout */ 124 unsigned request_timeout;/* total session timeout */ 125 #ifndef NO_LUA_SUPPORT 126 int process_lua; /* use the Lua handler */ 127 SIMPLEQ_HEAD(, lua_state_map) lua_states; 128 #endif 129 void *sslinfo; /* pointer to ssl struct */ 130 int dynamic_content_map_size;/* size of dyn cont map */ 131 bozo_content_map_t *dynamic_content_map;/* dynamic content map */ 132 size_t mmapsz; /* size of region to mmap */ 133 char *getln_buffer; /* space for getln buffer */ 134 ssize_t getln_buflen; /* length of allocated space */ 135 char *errorbuf; /* no dynamic allocation allowed */ 136 bozo_consts_t consts; /* various constants */ 137 } bozohttpd_t; 138 139 /* bozo_httpreq_t */ 140 typedef struct bozo_httpreq_t { 141 bozohttpd_t *hr_httpd; 142 int hr_method; 143 #define HTTP_GET 0x01 144 #define HTTP_POST 0x02 145 #define HTTP_HEAD 0x03 146 #define HTTP_OPTIONS 0x04 /* not supported */ 147 #define HTTP_PUT 0x05 /* not supported */ 148 #define HTTP_DELETE 0x06 /* not supported */ 149 #define HTTP_TRACE 0x07 /* not supported */ 150 #define HTTP_CONNECT 0x08 /* not supported */ 151 const char *hr_methodstr; 152 char *hr_virthostname; /* server name (if not identical 153 to hr_httpd->virthostname) */ 154 char *hr_file; 155 char *hr_oldfile; /* if we added an index_html */ 156 char *hr_query; 157 char *hr_host; /* HTTP/1.1 Host: or virtual hostname, 158 possibly including a port number */ 159 #ifndef NO_USER_SUPPORT 160 char *hr_user; /* username if we hit userdir request */ 161 #endif /* !NO_USER_SUPPORT */ 162 const char *hr_proto; 163 const char *hr_content_type; 164 const char *hr_content_length; 165 const char *hr_allow; 166 const char *hr_referrer; 167 const char *hr_range; 168 const char *hr_if_modified_since; 169 const char *hr_accept_encoding; 170 int hr_have_range; 171 off_t hr_first_byte_pos; 172 off_t hr_last_byte_pos; 173 /*const*/ char *hr_remotehost; 174 /*const*/ char *hr_remoteaddr; 175 /*const*/ char *hr_serverport; 176 #ifdef DO_HTPASSWD 177 /*const*/ char *hr_authrealm; 178 /*const*/ char *hr_authuser; 179 /*const*/ char *hr_authpass; 180 #endif 181 struct qheaders hr_headers; 182 struct qheaders hr_replheaders; 183 unsigned hr_nheaders; 184 size_t hr_header_bytes; 185 } bozo_httpreq_t; 186 187 /* helper to access the "active" host name from a httpd/request pair */ 188 #define BOZOHOST(HTTPD,REQUEST) ((REQUEST)->hr_virthostname ? \ 189 (REQUEST)->hr_virthostname : \ 190 (HTTPD)->virthostname) 191 192 /* structure to hold string based (name, value) pairs with preferences */ 193 typedef struct bozoprefs_t { 194 size_t size; /* size of the two arrays */ 195 size_t count; /* # of entries in arrays */ 196 char **name; /* names of each entry */ 197 char **value; /* values for the name entries */ 198 } bozoprefs_t; 199 200 /* by default write in upto 64KiB chunks, and mmap in upto 64MiB chunks */ 201 #ifndef BOZO_WRSZ 202 #define BOZO_WRSZ (64 * 1024) 203 #endif 204 #ifndef BOZO_MMAPSZ 205 #define BOZO_MMAPSZ (BOZO_WRSZ * 1024) 206 #endif 207 208 /* only allow this many total headers bytes */ 209 #define BOZO_HEADERS_MAX_SIZE (16 * 1024) 210 211 /* debug flags */ 212 #define DEBUG_NORMAL 1 213 #define DEBUG_FAT 2 214 #define DEBUG_OBESE 3 215 #define DEBUG_EXPLODING 4 216 217 #define strornull(x) ((x) ? (x) : "<null>") 218 219 #if (defined(__GNUC__) && __GNUC__ >= 3) || defined(__lint__) 220 #define BOZO_PRINTFLIKE(x,y) __attribute__((__format__(__printf__, x,y))) 221 #define BOZO_DEAD __attribute__((__noreturn__)) 222 #define BOZO_CHECKRET __attribute__((__warn_unused_result__)) 223 #else 224 #define BOZO_PRINTFLIKE(x,y) 225 #define BOZO_DEAD 226 #define BOZO_CHECKRET 227 #endif 228 229 #ifdef NO_DEBUG 230 #define debug(x) 231 #define have_debug (0) 232 #else 233 void debug__(bozohttpd_t *, int, const char *, ...) BOZO_PRINTFLIKE(3, 4); 234 #define debug(x) debug__ x 235 #define have_debug (1) 236 #endif /* NO_DEBUG */ 237 238 /* 239 * bozohttpd special files. avoid serving these out. 240 * 241 * When you add some .bz* file, make sure to also check it in 242 * bozo_check_special_files() 243 */ 244 245 #ifndef DIRECT_ACCESS_FILE 246 #define DIRECT_ACCESS_FILE ".bzdirect" 247 #endif 248 #ifndef REDIRECT_FILE 249 #define REDIRECT_FILE ".bzredirect" 250 #endif 251 #ifndef ABSREDIRECT_FILE 252 #define ABSREDIRECT_FILE ".bzabsredirect" 253 #endif 254 #ifndef REMAP_FILE 255 #define REMAP_FILE ".bzremap" 256 #endif 257 #ifndef AUTH_FILE 258 #define AUTH_FILE ".htpasswd" 259 #endif 260 261 /* be sure to always return this error up */ 262 int bozo_http_error(bozohttpd_t *, int, bozo_httpreq_t *, const char *); 263 264 int bozo_check_special_files(bozo_httpreq_t *, const char *, bool) BOZO_CHECKRET; 265 char *bozo_http_date(char *, size_t); 266 void bozo_print_header(bozo_httpreq_t *, struct stat *, const char *, 267 const char *); 268 char *bozo_escape_rfc3986(bozohttpd_t *httpd, const char *url, int absolute); 269 char *bozo_escape_html(bozohttpd_t *httpd, const char *url); 270 int bozo_decode_url_percent(bozo_httpreq_t *, char *); 271 272 /* these are similar to libc functions, no underscore here */ 273 void bozowarn(bozohttpd_t *, const char *, ...) 274 BOZO_PRINTFLIKE(2, 3); 275 void bozoerr(bozohttpd_t *, int, const char *, ...) 276 BOZO_PRINTFLIKE(3, 4) 277 BOZO_DEAD; 278 void bozoasprintf(bozohttpd_t *, char **, const char *, ...) 279 BOZO_PRINTFLIKE(3, 4); 280 char *bozodgetln(bozohttpd_t *, int, ssize_t *, ssize_t (*)(bozohttpd_t *, 281 int, void *, size_t)); 282 char *bozostrnsep(char **, const char *, ssize_t *); 283 void *bozomalloc(bozohttpd_t *, size_t); 284 void *bozorealloc(bozohttpd_t *, void *, size_t); 285 char *bozostrdup(bozohttpd_t *, bozo_httpreq_t *, const char *); 286 287 #define bozo_noop do { /* nothing */ } while (/*CONSTCOND*/0) 288 289 #define have_all (1) 290 291 /* ssl-bozo.c */ 292 #ifdef NO_SSL_SUPPORT 293 #define bozo_ssl_set_opts(w, x, y) bozo_noop 294 #define bozo_ssl_set_ciphers(w, x) bozo_noop 295 #define bozo_ssl_init(x) bozo_noop 296 #define bozo_ssl_accept(x) (0) 297 #define bozo_ssl_destroy(x) bozo_noop 298 #define have_ssl (0) 299 #else 300 void bozo_ssl_set_opts(bozohttpd_t *, const char *, const char *); 301 void bozo_ssl_set_ciphers(bozohttpd_t *, const char *); 302 void bozo_ssl_init(bozohttpd_t *); 303 int bozo_ssl_accept(bozohttpd_t *); 304 void bozo_ssl_destroy(bozohttpd_t *); 305 #define have_ssl (1) 306 #endif 307 308 309 /* auth-bozo.c */ 310 #ifdef DO_HTPASSWD 311 void bozo_auth_init(bozo_httpreq_t *); 312 int bozo_auth_check(bozo_httpreq_t *, const char *); 313 void bozo_auth_cleanup(bozo_httpreq_t *); 314 int bozo_auth_check_headers(bozo_httpreq_t *, char *, char *, ssize_t); 315 void bozo_auth_check_401(bozo_httpreq_t *, int); 316 void bozo_auth_cgi_setenv(bozo_httpreq_t *, char ***); 317 int bozo_auth_cgi_count(bozo_httpreq_t *); 318 #else 319 #define bozo_auth_init(x) bozo_noop 320 #define bozo_auth_check(x, y) (0) 321 #define bozo_auth_cleanup(x) bozo_noop 322 #define bozo_auth_check_headers(y, z, a, b) (0) 323 #define bozo_auth_check_401(x, y) bozo_noop 324 #define bozo_auth_cgi_setenv(x, y) bozo_noop 325 #define bozo_auth_cgi_count(x) (0) 326 #endif /* DO_HTPASSWD */ 327 328 329 /* cgi-bozo.c */ 330 #ifdef NO_CGIBIN_SUPPORT 331 #define bozo_cgi_setbin(h,s) bozo_noop 332 #define bozo_process_cgi(h) (0) 333 #define have_cgibin (0) 334 #else 335 void bozo_cgi_setbin(bozohttpd_t *, const char *); 336 void bozo_setenv(bozohttpd_t *, const char *, const char *, char **); 337 int bozo_process_cgi(bozo_httpreq_t *); 338 #define have_cgibin (1) 339 #endif /* NO_CGIBIN_SUPPORT */ 340 341 342 /* lua-bozo.c */ 343 #ifdef NO_LUA_SUPPORT 344 #define bozo_process_lua(h) (0) 345 #define bozo_add_lua_map(h,s,t) bozo_noop 346 #define have_lua (0) 347 #else 348 void bozo_add_lua_map(bozohttpd_t *, const char *, const char *); 349 int bozo_process_lua(bozo_httpreq_t *); 350 #define have_lua (1) 351 #endif /* NO_LUA_SUPPORT */ 352 353 354 /* daemon-bozo.c */ 355 #ifdef NO_DAEMON_MODE 356 #define bozo_daemon_init(x) bozo_noop 357 #define bozo_daemon_fork(x) (0) 358 #define bozo_daemon_closefds(x) bozo_noop 359 #define have_daemon_mode (0) 360 #else 361 void bozo_daemon_init(bozohttpd_t *); 362 int bozo_daemon_fork(bozohttpd_t *); 363 void bozo_daemon_closefds(bozohttpd_t *); 364 #define have_daemon_mode (1) 365 #endif /* NO_DAEMON_MODE */ 366 367 368 /* tilde-luzah-bozo.c */ 369 #ifdef NO_USER_SUPPORT 370 #define bozo_user_transform(x) (0) 371 #define bozo_user_free(x) /* nothing */ 372 #define have_user (0) 373 #else 374 int bozo_user_transform(bozo_httpreq_t *); 375 #define bozo_user_free(x) free(x) 376 #define have_user (1) 377 #endif /* NO_USER_SUPPORT */ 378 379 380 /* dir-index-bozo.c */ 381 #ifdef NO_DIRINDEX_SUPPORT 382 #define bozo_dir_index(a, b, c) (0) 383 #define have_dirindex (0) 384 #else 385 int bozo_dir_index(bozo_httpreq_t *, const char *, int); 386 #define have_dirindex (1) 387 #endif /* NO_DIRINDEX_SUPPORT */ 388 389 390 /* content-bozo.c */ 391 const char *bozo_content_type(bozo_httpreq_t *, const char *); 392 const char *bozo_content_encoding(bozo_httpreq_t *, const char *); 393 bozo_content_map_t *bozo_match_content_map(bozohttpd_t *, const char *, int); 394 bozo_content_map_t *bozo_get_content_map(bozohttpd_t *, const char *); 395 #ifdef NO_DYNAMIC_CONTENT 396 #define bozo_add_content_map_mime(h,s,t,u,v) bozo_noop 397 #define have_dynamic_content (0) 398 #else 399 void bozo_add_content_map_mime(bozohttpd_t *, const char *, const char *, 400 const char *, const char *); 401 #define have_dynamic_content (1) 402 #endif 403 404 /* additional cgi-bozo.c */ 405 #if have_cgibin && have_dynamic_content 406 void bozo_add_content_map_cgi(bozohttpd_t *, const char *, const char *); 407 #else 408 #define bozo_add_content_map_cgi(h,s,t) 409 #endif 410 411 /* I/O */ 412 int bozo_printf(bozohttpd_t *, const char *, ...) BOZO_PRINTFLIKE(2, 3); 413 ssize_t bozo_read(bozohttpd_t *, int, void *, size_t); 414 ssize_t bozo_write(bozohttpd_t *, int, const void *, size_t); 415 int bozo_flush(bozohttpd_t *, FILE *); 416 417 /* misc */ 418 int bozo_init_httpd(bozohttpd_t *); 419 int bozo_init_prefs(bozohttpd_t *, bozoprefs_t *); 420 int bozo_set_defaults(bozohttpd_t *, bozoprefs_t *); 421 int bozo_setup(bozohttpd_t *, bozoprefs_t *, const char *, const char *); 422 bozo_httpreq_t *bozo_read_request(bozohttpd_t *); 423 void bozo_process_request(bozo_httpreq_t *); 424 void bozo_clean_request(bozo_httpreq_t *); 425 int bozo_set_timeout(bozohttpd_t *, bozoprefs_t *, const char *, const char *); 426 bozoheaders_t *addmerge_reqheader(bozo_httpreq_t *, const char *, 427 const char *, ssize_t); 428 bozoheaders_t *addmerge_replheader(bozo_httpreq_t *, const char *, 429 const char *, ssize_t); 430 431 /* variables */ 432 int bozo_set_pref(bozohttpd_t *, bozoprefs_t *, const char *, const char *); 433 char *bozo_get_pref(bozoprefs_t *, const char *); 434 435 int bozo_get_version(char */*buf*/, size_t /*size*/); 436 437 #endif /* BOZOHTTOPD_H_ */ 438
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