bozohttpd.h revision 1.70
1 /* $NetBSD: bozohttpd.h,v 1.70 2021/08/24 09:47:36 mrg Exp $ */ 2 3 /* $eterna: bozohttpd.h,v 1.39 2011/11/18 09:21:15 mrg Exp $ */ 4 5 /* 6 * Copyright (c) 1997-2021 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 BOZOHTTPD_H_ 33 #define BOZOHTTPD_H_ 1 34 35 #include "netbsd_queue.h" 36 37 #include <stdbool.h> 38 #include <stdio.h> 39 #include <signal.h> 40 41 #include <sys/stat.h> 42 43 #ifndef NO_LUA_SUPPORT 44 #include <lua.h> 45 #endif 46 47 #ifndef NO_BLOCKLIST_SUPPORT 48 #include <blocklist.h> 49 void pfilter_notify(const int, const int); 50 #endif 51 52 /* QNX provides a lot of NetBSD things in nbutil.h */ 53 #ifdef HAVE_NBUTIL_H 54 #include <nbutil.h> 55 #endif 56 57 /* lots of "const" but gets free()'ed etc at times, sigh */ 58 59 /* headers */ 60 typedef struct bozoheaders { 61 /*const*/ char *h_header; 62 /*const*/ char *h_value; /* this gets free()'ed etc at times */ 63 SIMPLEQ_ENTRY(bozoheaders) h_next; 64 } bozoheaders_t; 65 SIMPLEQ_HEAD(qheaders, bozoheaders); 66 67 #ifndef NO_LUA_SUPPORT 68 typedef struct lua_handler { 69 const char *name; 70 int ref; 71 SIMPLEQ_ENTRY(lua_handler) h_next; 72 } lua_handler_t; 73 74 typedef struct lua_state_map { 75 const char *script; 76 const char *prefix; 77 lua_State *L; 78 SIMPLEQ_HEAD(, lua_handler) handlers; 79 SIMPLEQ_ENTRY(lua_state_map) s_next; 80 } lua_state_map_t; 81 #endif 82 83 typedef struct bozo_content_map_t { 84 const char *name; /* postfix of file */ 85 const char *type; /* matching content-type */ 86 const char *encoding; /* matching content-encoding */ 87 const char *encoding11; /* matching content-encoding (HTTP/1.1) */ 88 const char *cgihandler; /* optional CGI handler */ 89 } bozo_content_map_t; 90 91 /* this struct holds the bozo constants */ 92 typedef struct bozo_consts_t { 93 const char *http_09; /* "HTTP/0.9" */ 94 const char *http_10; /* "HTTP/1.0" */ 95 const char *http_11; /* "HTTP/1.1" */ 96 const char *text_plain; /* "text/plain" */ 97 } bozo_consts_t; 98 99 /* this structure encapsulates all the bozo flags and control vars */ 100 typedef struct bozohttpd_t { 101 char *rootdir; /* root directory */ 102 int numeric; /* avoid gethostby*() */ 103 char *virtbase; /* virtual directory base */ 104 int unknown_slash; /* unknown vhosts go to normal slashdir */ 105 int logstderr; /* log to stderr (even if not tty) */ 106 int background; /* drop into daemon mode */ 107 int foreground; /* keep daemon mode in foreground */ 108 char *pidfile; /* path to the pid file, if any */ 109 size_t page_size; /* page size */ 110 char *slashdir; /* www slash directory */ 111 char *bindport; /* bind port; default "http" */ 112 char *bindaddress; /* address for binding - INADDR_ANY */ 113 int debug; /* debugging level */ 114 char *virthostname; /* my name */ 115 const char *server_software;/* our brand :-) */ 116 const char *index_html; /* our home page */ 117 const char *public_html; /* ~user/public_html page */ 118 int enable_users; /* enable public_html */ 119 int enable_cgi_users; /* use the cgi handler */ 120 int *sock; /* bound sockets */ 121 int nsock; /* number of above */ 122 struct pollfd *fds; /* current poll fd set */ 123 int request_times; /* # times a request was processed */ 124 int dir_indexing; /* handle directories */ 125 const char *dir_readme; /* include README footer in indexes */ 126 int hide_dots; /* hide .* */ 127 int process_cgi; /* use the cgi handler */ 128 char *cgibin; /* cgi-bin directory */ 129 unsigned ssl_timeout; /* ssl timeout */ 130 unsigned initial_timeout;/* first line timeout */ 131 unsigned header_timeout; /* header lines timeout */ 132 unsigned request_timeout;/* total session timeout */ 133 char *ssl_min_proto; /* minimum ssl protocol level */ 134 #ifndef NO_LUA_SUPPORT 135 int process_lua; /* use the Lua handler */ 136 SIMPLEQ_HEAD(, lua_state_map) lua_states; 137 #endif 138 void *sslinfo; /* pointer to ssl struct */ 139 int dynamic_content_map_size;/* size of dyn cont map */ 140 bozo_content_map_t *dynamic_content_map;/* dynamic content map */ 141 size_t mmapsz; /* size of region to mmap */ 142 char *getln_buffer; /* space for getln buffer */ 143 ssize_t getln_buflen; /* length of allocated space */ 144 char *errorbuf; /* no dynamic allocation allowed */ 145 bozo_consts_t consts; /* various constants */ 146 } bozohttpd_t; 147 148 /* bozo_httpreq_t */ 149 typedef struct bozo_httpreq_t { 150 bozohttpd_t *hr_httpd; 151 int hr_method; 152 #define HTTP_GET 0x01 153 #define HTTP_POST 0x02 154 #define HTTP_HEAD 0x03 155 #define HTTP_OPTIONS 0x04 /* not supported */ 156 #define HTTP_PUT 0x05 /* not supported */ 157 #define HTTP_DELETE 0x06 /* not supported */ 158 #define HTTP_TRACE 0x07 /* not supported */ 159 #define HTTP_CONNECT 0x08 /* not supported */ 160 const char *hr_methodstr; 161 char *hr_virthostname; /* server name (if not identical 162 to hr_httpd->virthostname) */ 163 char *hr_file_free; /* pointer to file buffer to free() */ 164 char *hr_file; /* pointer into file buffer */ 165 char *hr_oldfile; /* if we added an index_html */ 166 char *hr_query; 167 char *hr_host; /* HTTP/1.1 Host: or virtual hostname, 168 possibly including a port number */ 169 #ifndef NO_USER_SUPPORT 170 char *hr_user; /* username if we hit userdir request */ 171 #endif /* !NO_USER_SUPPORT */ 172 const char *hr_proto; 173 const char *hr_content_type; 174 const char *hr_content_length; 175 const char *hr_allow; 176 const char *hr_referrer; 177 const char *hr_range; 178 const char *hr_if_modified_since; 179 const char *hr_accept_encoding; 180 int hr_have_range; 181 off_t hr_first_byte_pos; 182 off_t hr_last_byte_pos; 183 /*const*/ char *hr_remotehost; 184 /*const*/ char *hr_remoteaddr; 185 /*const*/ char *hr_serverport; 186 #ifdef DO_HTPASSWD 187 /*const*/ char *hr_authrealm; 188 /*const*/ char *hr_authuser; 189 /*const*/ char *hr_authpass; 190 #endif 191 struct qheaders hr_headers; 192 struct qheaders hr_replheaders; 193 unsigned hr_nheaders; 194 size_t hr_header_bytes; 195 } bozo_httpreq_t; 196 197 /* helper to access the "active" host name from a httpd/request pair */ 198 #define BOZOHOST(HTTPD,REQUEST) ((REQUEST)->hr_virthostname ? \ 199 (REQUEST)->hr_virthostname : \ 200 (HTTPD)->virthostname) 201 202 /* structure to hold string based (name, value) pairs with preferences */ 203 typedef struct bozoprefs_t { 204 size_t size; /* size of the two arrays */ 205 size_t count; /* # of entries in arrays */ 206 char **name; /* names of each entry */ 207 char **value; /* values for the name entries */ 208 } bozoprefs_t; 209 210 /* sun2 has a tiny VA range */ 211 #ifdef __mc68010__ 212 #ifndef BOZO_WRSZ 213 #define BOZO_WRSZ (16 * 1024) 214 #endif 215 #ifndef BOZO_MMAPSZ 216 #define BOZO_MMAPSZ (BOZO_WRSZ * 4) 217 #endif 218 #endif 219 220 /* by default write in upto 64KiB chunks, and mmap in upto 64MiB chunks */ 221 #ifndef BOZO_WRSZ 222 #define BOZO_WRSZ (64 * 1024) 223 #endif 224 #ifndef BOZO_MMAPSZ 225 #define BOZO_MMAPSZ (BOZO_WRSZ * 1024) 226 #endif 227 228 /* only allow this many total headers bytes */ 229 #define BOZO_HEADERS_MAX_SIZE (16 * 1024) 230 231 #define BOZO_MINBUFSIZE (4 * 1024) 232 233 /* debug flags */ 234 #define DEBUG_NORMAL 1 235 #define DEBUG_FAT 2 236 #define DEBUG_OBESE 3 237 #define DEBUG_EXPLODING 4 238 239 #define strornull(x) ((x) ? (x) : "<null>") 240 241 #if (defined(__GNUC__) && __GNUC__ >= 3) || defined(__lint__) 242 #define BOZO_PRINTFLIKE(x,y) __attribute__((__format__(__printf__, x,y))) 243 #define BOZO_DEAD __attribute__((__noreturn__)) 244 #define BOZO_CHECKRET __attribute__((__warn_unused_result__)) 245 #else 246 #define BOZO_PRINTFLIKE(x,y) 247 #define BOZO_DEAD 248 #define BOZO_CHECKRET 249 #endif 250 251 #ifdef NO_DEBUG 252 #define debug(x) 253 #define have_debug (0) 254 #else 255 void debug__(bozohttpd_t *, int, const char *, ...) BOZO_PRINTFLIKE(3, 4); 256 #define debug(x) debug__ x 257 #define have_debug (1) 258 #endif /* NO_DEBUG */ 259 260 #define BOZO_HTTP_PORT "80" 261 #define BOZO_HTTPS_PORT "443" 262 263 /* 264 * bozohttpd special files. avoid serving these out. 265 * 266 * When you add some .bz* file, make sure to also check it in 267 * bozo_check_special_files() 268 */ 269 270 #ifndef DIRECT_ACCESS_FILE 271 #define DIRECT_ACCESS_FILE ".bzdirect" 272 #endif 273 #ifndef REDIRECT_FILE 274 #define REDIRECT_FILE ".bzredirect" 275 #endif 276 #ifndef ABSREDIRECT_FILE 277 #define ABSREDIRECT_FILE ".bzabsredirect" 278 #endif 279 #ifndef REMAP_FILE 280 #define REMAP_FILE ".bzremap" 281 #endif 282 #ifndef AUTH_FILE 283 #define AUTH_FILE ".htpasswd" 284 #endif 285 286 /* be sure to always return this error up */ 287 int bozo_http_error(bozohttpd_t *, int, bozo_httpreq_t *, const char *); 288 289 int bozo_check_special_files(bozo_httpreq_t *, const char *, bool) BOZO_CHECKRET; 290 char *bozo_http_date(char *, size_t); 291 void bozo_print_header(bozo_httpreq_t *, struct stat *, const char *, 292 const char *); 293 char *bozo_escape_rfc3986(bozohttpd_t *httpd, const char *url, int absolute); 294 char *bozo_escape_html(bozohttpd_t *httpd, const char *url); 295 int bozo_decode_url_percent(bozo_httpreq_t *, char *); 296 297 /* these are similar to libc functions, no underscore here */ 298 void bozowarn(bozohttpd_t *, const char *, ...) 299 BOZO_PRINTFLIKE(2, 3); 300 void bozoerr(bozohttpd_t *, int, const char *, ...) 301 BOZO_PRINTFLIKE(3, 4) 302 BOZO_DEAD; 303 void bozoasprintf(bozohttpd_t *, char **, const char *, ...) 304 BOZO_PRINTFLIKE(3, 4); 305 char *bozodgetln(bozohttpd_t *, int, ssize_t *, ssize_t (*)(bozohttpd_t *, 306 int, void *, size_t)); 307 char *bozostrnsep(char **, const char *, ssize_t *); 308 void *bozomalloc(bozohttpd_t *, size_t); 309 void *bozorealloc(bozohttpd_t *, void *, size_t); 310 char *bozostrdup(bozohttpd_t *, bozo_httpreq_t *, const char *); 311 312 #define bozo_noop do { /* nothing */ } while (/*CONSTCOND*/0) 313 314 #define have_core (1) 315 316 /* ssl-bozo.c */ 317 #ifdef NO_SSL_SUPPORT 318 #define bozo_ssl_set_opts(w, x, y) bozo_noop 319 #define bozo_ssl_set_ciphers(w, x) bozo_noop 320 #define bozo_ssl_init(x) bozo_noop 321 #define bozo_ssl_accept(x) (0) 322 #define bozo_ssl_shutdown(x) bozo_noop 323 #define bozo_ssl_destroy(x) bozo_noop 324 #define have_ssl (0) 325 #else 326 void bozo_ssl_set_opts(bozohttpd_t *, const char *, const char *); 327 void bozo_ssl_set_ciphers(bozohttpd_t *, const char *); 328 void bozo_ssl_init(bozohttpd_t *); 329 int bozo_ssl_accept(bozohttpd_t *); 330 void bozo_ssl_shutdown(bozohttpd_t *); 331 void bozo_ssl_destroy(bozohttpd_t *); 332 #define have_ssl (1) 333 #endif 334 335 336 /* auth-bozo.c */ 337 #ifdef DO_HTPASSWD 338 void bozo_auth_init(bozo_httpreq_t *); 339 int bozo_auth_check(bozo_httpreq_t *, const char *); 340 void bozo_auth_cleanup(bozo_httpreq_t *); 341 int bozo_auth_check_headers(bozo_httpreq_t *, char *, char *, ssize_t); 342 void bozo_auth_check_401(bozo_httpreq_t *, int); 343 void bozo_auth_cgi_setenv(bozo_httpreq_t *, char ***); 344 int bozo_auth_cgi_count(bozo_httpreq_t *); 345 #else 346 #define bozo_auth_init(x) bozo_noop 347 #define bozo_auth_check(x, y) (0) 348 #define bozo_auth_cleanup(x) bozo_noop 349 #define bozo_auth_check_headers(y, z, a, b) (0) 350 #define bozo_auth_check_401(x, y) bozo_noop 351 #define bozo_auth_cgi_setenv(x, y) bozo_noop 352 #define bozo_auth_cgi_count(x) (0) 353 #endif /* DO_HTPASSWD */ 354 355 356 /* cgi-bozo.c */ 357 #ifdef NO_CGIBIN_SUPPORT 358 #define bozo_cgi_setbin(h,s) bozo_noop 359 #define bozo_process_cgi(h) (0) 360 #define have_cgibin (0) 361 #else 362 void bozo_cgi_setbin(bozohttpd_t *, const char *); 363 void bozo_setenv(bozohttpd_t *, const char *, const char *, char **); 364 int bozo_process_cgi(bozo_httpreq_t *); 365 #define have_cgibin (1) 366 #endif /* NO_CGIBIN_SUPPORT */ 367 368 369 /* lua-bozo.c */ 370 #ifdef NO_LUA_SUPPORT 371 #define bozo_process_lua(h) (0) 372 #define bozo_add_lua_map(h,s,t) bozo_noop 373 #define have_lua (0) 374 #else 375 void bozo_add_lua_map(bozohttpd_t *, const char *, const char *); 376 int bozo_process_lua(bozo_httpreq_t *); 377 #define have_lua (1) 378 #endif /* NO_LUA_SUPPORT */ 379 380 381 /* daemon-bozo.c */ 382 #ifdef NO_DAEMON_MODE 383 #define bozo_daemon_init(x) bozo_noop 384 #define bozo_daemon_fork(x) (0) 385 #define bozo_daemon_closefds(x) bozo_noop 386 #define have_daemon_mode (0) 387 #else 388 void bozo_daemon_init(bozohttpd_t *); 389 int bozo_daemon_fork(bozohttpd_t *); 390 void bozo_daemon_closefds(bozohttpd_t *); 391 #define have_daemon_mode (1) 392 #endif /* NO_DAEMON_MODE */ 393 394 395 /* tilde-luzah-bozo.c */ 396 #ifdef NO_USER_SUPPORT 397 #define bozo_user_transform(x) (0) 398 #define bozo_user_free(x) /* nothing */ 399 #define have_user (0) 400 #else 401 int bozo_user_transform(bozo_httpreq_t *); 402 #define bozo_user_free(x) free(x) 403 #define have_user (1) 404 #endif /* NO_USER_SUPPORT */ 405 406 407 /* dir-index-bozo.c */ 408 #ifdef NO_DIRINDEX_SUPPORT 409 #define bozo_dir_index(a, b, c) (0) 410 #define have_dirindex (0) 411 #else 412 int bozo_dir_index(bozo_httpreq_t *, const char *, int); 413 #define have_dirindex (1) 414 #endif /* NO_DIRINDEX_SUPPORT */ 415 416 417 /* content-bozo.c */ 418 const char *bozo_content_type(bozo_httpreq_t *, const char *); 419 const char *bozo_content_encoding(bozo_httpreq_t *, const char *); 420 bozo_content_map_t *bozo_match_content_map(bozohttpd_t *, const char *, int); 421 bozo_content_map_t *bozo_get_content_map(bozohttpd_t *, const char *); 422 #ifdef NO_DYNAMIC_CONTENT 423 #define bozo_add_content_map_mime(h,s,t,u,v) bozo_noop 424 #define have_dynamic_content (0) 425 #else 426 void bozo_add_content_map_mime(bozohttpd_t *, const char *, const char *, 427 const char *, const char *); 428 #define have_dynamic_content (1) 429 #endif 430 431 /* additional cgi-bozo.c */ 432 #if have_cgibin && have_dynamic_content 433 void bozo_add_content_map_cgi(bozohttpd_t *, const char *, const char *); 434 #else 435 #define bozo_add_content_map_cgi(h,s,t) 436 #endif 437 438 /* I/O */ 439 int bozo_printf(bozohttpd_t *, const char *, ...) BOZO_PRINTFLIKE(2, 3); 440 ssize_t bozo_read(bozohttpd_t *, int, void *, size_t); 441 ssize_t bozo_write(bozohttpd_t *, int, const void *, size_t); 442 int bozo_flush(bozohttpd_t *, FILE *); 443 444 /* misc */ 445 int bozo_init_httpd(bozohttpd_t *); 446 int bozo_init_prefs(bozohttpd_t *, bozoprefs_t *); 447 int bozo_set_defaults(bozohttpd_t *, bozoprefs_t *); 448 int bozo_setup(bozohttpd_t *, bozoprefs_t *, const char *, const char *); 449 void bozo_cleanup(bozohttpd_t *, bozoprefs_t *); 450 bozo_httpreq_t *bozo_read_request(bozohttpd_t *); 451 void bozo_process_request(bozo_httpreq_t *); 452 void bozo_clean_request(bozo_httpreq_t *); 453 int bozo_set_timeout(bozohttpd_t *, bozoprefs_t *, const char *, const char *); 454 bozoheaders_t *addmerge_reqheader(bozo_httpreq_t *, const char *, 455 const char *, ssize_t); 456 bozoheaders_t *addmerge_replheader(bozo_httpreq_t *, const char *, 457 const char *, ssize_t); 458 459 /* variables */ 460 int bozo_set_pref(bozohttpd_t *, bozoprefs_t *, const char *, const char *); 461 char *bozo_get_pref(bozoprefs_t *, const char *); 462 463 int bozo_get_version(char */*buf*/, size_t /*size*/); 464 465 extern volatile sig_atomic_t bozo_timeout_hit; 466 467 #endif /* BOZOHTTPD_H_ */ 468
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