1 /* $NetBSD: bozohttpd.h,v 1.36 2015/08/05 06:50:44 mrg Exp $ */ 2 3 /* $eterna: bozohttpd.h,v 1.39 2011/11/18 09:21:15 mrg Exp $ */ 4 5 /* 6 * Copyright (c) 1997-2015 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 <sys/stat.h> 38 39 #ifndef NO_LUA_SUPPORT 40 #include <lua.h> 41 #endif 42 #include <stdio.h> 43 44 /* QNX provides a lot of NetBSD things in nbutil.h */ 45 #ifdef USE_NBUTIL 46 #include <nbutil.h> 47 #endif 48 49 /* lots of "const" but gets free()'ed etc at times, sigh */ 50 51 /* headers */ 52 typedef struct bozoheaders { 53 /*const*/ char *h_header; 54 /*const*/ char *h_value; /* this gets free()'ed etc at times */ 55 SIMPLEQ_ENTRY(bozoheaders) h_next; 56 } bozoheaders_t; 57 58 #ifndef NO_LUA_SUPPORT 59 typedef struct lua_handler { 60 const char *name; 61 int ref; 62 SIMPLEQ_ENTRY(lua_handler) h_next; 63 } lua_handler_t; 64 65 typedef struct lua_state_map { 66 const char *script; 67 const char *prefix; 68 lua_State *L; 69 SIMPLEQ_HEAD(, lua_handler) handlers; 70 SIMPLEQ_ENTRY(lua_state_map) s_next; 71 } lua_state_map_t; 72 #endif 73 74 typedef struct bozo_content_map_t { 75 const char *name; /* postfix of file */ 76 const char *type; /* matching content-type */ 77 const char *encoding; /* matching content-encoding */ 78 const char *encoding11; /* matching content-encoding (HTTP/1.1) */ 79 const char *cgihandler; /* optional CGI handler */ 80 } bozo_content_map_t; 81 82 /* this struct holds the bozo constants */ 83 typedef struct bozo_consts_t { 84 const char *http_09; /* "HTTP/0.9" */ 85 const char *http_10; /* "HTTP/1.0" */ 86 const char *http_11; /* "HTTP/1.1" */ 87 const char *text_plain; /* "text/plain" */ 88 } bozo_consts_t; 89 90 /* this structure encapsulates all the bozo flags and control vars */ 91 typedef struct bozohttpd_t { 92 char *rootdir; /* root directory */ 93 char *username; /* username to switch to */ 94 int numeric; /* avoid gethostby*() */ 95 char *virtbase; /* virtual directory base */ 96 int unknown_slash; /* unknown vhosts go to normal slashdir */ 97 int untrustedref; /* make sure referrer = me unless url = / */ 98 int logstderr; /* log to stderr (even if not tty) */ 99 int background; /* drop into daemon mode */ 100 int foreground; /* keep daemon mode in foreground */ 101 char *pidfile; /* path to the pid file, if any */ 102 size_t page_size; /* page size */ 103 char *slashdir; /* www slash directory */ 104 char *bindport; /* bind port; default "http" */ 105 char *bindaddress; /* address for binding - INADDR_ANY */ 106 int debug; /* debugging level */ 107 char *virthostname; /* my name */ 108 const char *server_software;/* our brand :-) */ 109 const char *index_html; /* our home page */ 110 const char *public_html; /* ~user/public_html page */ 111 int enable_users; /* enable public_html */ 112 int *sock; /* bound sockets */ 113 int nsock; /* number of above */ 114 struct pollfd *fds; /* current poll fd set */ 115 int request_times; /* # times a request was processed */ 116 int dir_indexing; /* handle directories */ 117 int hide_dots; /* hide .* */ 118 int process_cgi; /* use the cgi handler */ 119 char *cgibin; /* cgi-bin directory */ 120 #ifndef NO_LUA_SUPPORT 121 int process_lua; /* use the Lua handler */ 122 SIMPLEQ_HEAD(, lua_state_map) lua_states; 123 #endif 124 void *sslinfo; /* pointer to ssl struct */ 125 int dynamic_content_map_size;/* size of dyn cont map */ 126 bozo_content_map_t *dynamic_content_map;/* dynamic content map */ 127 size_t mmapsz; /* size of region to mmap */ 128 char *getln_buffer; /* space for getln buffer */ 129 ssize_t getln_buflen; /* length of allocated space */ 130 char *errorbuf; /* no dynamic allocation allowed */ 131 bozo_consts_t consts; /* various constants */ 132 } bozohttpd_t; 133 134 /* bozo_httpreq_t */ 135 typedef struct bozo_httpreq_t { 136 bozohttpd_t *hr_httpd; 137 int hr_method; 138 #define HTTP_GET 0x01 139 #define HTTP_POST 0x02 140 #define HTTP_HEAD 0x03 141 #define HTTP_OPTIONS 0x04 /* not supported */ 142 #define HTTP_PUT 0x05 /* not supported */ 143 #define HTTP_DELETE 0x06 /* not supported */ 144 #define HTTP_TRACE 0x07 /* not supported */ 145 #define HTTP_CONNECT 0x08 /* not supported */ 146 const char *hr_methodstr; 147 char *hr_virthostname; /* server name (if not identical 148 to hr_httpd->virthostname) */ 149 char *hr_file; 150 char *hr_oldfile; /* if we added an index_html */ 151 char *hr_query; 152 char *hr_host; /* HTTP/1.1 Host: or virtual hostname, 153 possibly including a port number */ 154 const char *hr_proto; 155 const char *hr_content_type; 156 const char *hr_content_length; 157 const char *hr_allow; 158 const char *hr_referrer; 159 const char *hr_range; 160 const char *hr_if_modified_since; 161 const char *hr_accept_encoding; 162 int hr_have_range; 163 off_t hr_first_byte_pos; 164 off_t hr_last_byte_pos; 165 /*const*/ char *hr_remotehost; 166 /*const*/ char *hr_remoteaddr; 167 /*const*/ char *hr_serverport; 168 #ifdef DO_HTPASSWD 169 /*const*/ char *hr_authrealm; 170 /*const*/ char *hr_authuser; 171 /*const*/ char *hr_authpass; 172 #endif 173 SIMPLEQ_HEAD(, bozoheaders) hr_headers; 174 int hr_nheaders; 175 } bozo_httpreq_t; 176 177 /* helper to access the "active" host name from a httpd/request pair */ 178 #define BOZOHOST(HTTPD,REQUEST) ((REQUEST)->hr_virthostname ? \ 179 (REQUEST)->hr_virthostname : \ 180 (HTTPD)->virthostname) 181 182 /* structure to hold string based (name, value) pairs with preferences */ 183 typedef struct bozoprefs_t { 184 unsigned size; /* size of the two arrays */ 185 unsigned c; /* # of entries in arrays */ 186 char **name; /* names of each entry */ 187 char **value; /* values for the name entries */ 188 } bozoprefs_t; 189 190 /* by default write in upto 64KiB chunks, and mmap in upto 64MiB chunks */ 191 #ifndef BOZO_WRSZ 192 #define BOZO_WRSZ (64 * 1024) 193 #endif 194 #ifndef BOZO_MMAPSZ 195 #define BOZO_MMAPSZ (BOZO_WRSZ * 1024) 196 #endif 197 198 /* debug flags */ 199 #define DEBUG_NORMAL 1 200 #define DEBUG_FAT 2 201 #define DEBUG_OBESE 3 202 #define DEBUG_EXPLODING 4 203 204 #define strornull(x) ((x) ? (x) : "<null>") 205 206 #if defined(__GNUC__) && __GNUC__ >= 3 207 #define BOZO_PRINTFLIKE(x,y) __attribute__((__format__(__printf__, x,y))) 208 #define BOZO_DEAD __attribute__((__noreturn__)) 209 #endif 210 211 #ifndef NO_DEBUG 212 void debug__(bozohttpd_t *, int, const char *, ...) BOZO_PRINTFLIKE(3, 4); 213 #define debug(x) debug__ x 214 #else 215 #define debug(x) 216 #endif /* NO_DEBUG */ 217 218 void bozo_warn(bozohttpd_t *, const char *, ...) 219 BOZO_PRINTFLIKE(2, 3); 220 void bozo_err(bozohttpd_t *, int, const char *, ...) 221 BOZO_PRINTFLIKE(3, 4) 222 BOZO_DEAD; 223 int bozo_http_error(bozohttpd_t *, int, bozo_httpreq_t *, const char *); 224 225 int bozo_check_special_files(bozo_httpreq_t *, const char *); 226 char *bozo_http_date(char *, size_t); 227 void bozo_print_header(bozo_httpreq_t *, struct stat *, const char *, const char *); 228 char *bozo_escape_rfc3986(bozohttpd_t *httpd, const char *url); 229 char *bozo_escape_html(bozohttpd_t *httpd, const char *url); 230 231 char *bozodgetln(bozohttpd_t *, int, ssize_t *, ssize_t (*)(bozohttpd_t *, int, void *, size_t)); 232 char *bozostrnsep(char **, const char *, ssize_t *); 233 234 void *bozomalloc(bozohttpd_t *, size_t); 235 void *bozorealloc(bozohttpd_t *, void *, size_t); 236 char *bozostrdup(bozohttpd_t *, const char *); 237 238 /* ssl-bozo.c */ 239 #ifdef NO_SSL_SUPPORT 240 #define bozo_ssl_set_opts(w, x, y) do { /* nothing */ } while (0) 241 #define bozo_ssl_init(x) do { /* nothing */ } while (0) 242 #define bozo_ssl_accept(x) (0) 243 #define bozo_ssl_destroy(x) do { /* nothing */ } while (0) 244 #else 245 void bozo_ssl_set_opts(bozohttpd_t *, const char *, const char *); 246 void bozo_ssl_init(bozohttpd_t *); 247 int bozo_ssl_accept(bozohttpd_t *); 248 void bozo_ssl_destroy(bozohttpd_t *); 249 #endif 250 251 252 /* auth-bozo.c */ 253 #ifdef DO_HTPASSWD 254 void bozo_auth_init(bozo_httpreq_t *); 255 int bozo_auth_check(bozo_httpreq_t *, const char *); 256 void bozo_auth_cleanup(bozo_httpreq_t *); 257 int bozo_auth_check_headers(bozo_httpreq_t *, char *, char *, ssize_t); 258 int bozo_auth_check_special_files(bozo_httpreq_t *, const char *); 259 void bozo_auth_check_401(bozo_httpreq_t *, int); 260 void bozo_auth_cgi_setenv(bozo_httpreq_t *, char ***); 261 int bozo_auth_cgi_count(bozo_httpreq_t *); 262 #else 263 #define bozo_auth_init(x) do { /* nothing */ } while (0) 264 #define bozo_auth_check(x, y) 0 265 #define bozo_auth_cleanup(x) do { /* nothing */ } while (0) 266 #define bozo_auth_check_headers(y, z, a, b) 0 267 #define bozo_auth_check_special_files(x, y) 0 268 #define bozo_auth_check_401(x, y) do { /* nothing */ } while (0) 269 #define bozo_auth_cgi_setenv(x, y) do { /* nothing */ } while (0) 270 #define bozo_auth_cgi_count(x) 0 271 #endif /* DO_HTPASSWD */ 272 273 274 /* cgi-bozo.c */ 275 #ifdef NO_CGIBIN_SUPPORT 276 #define bozo_process_cgi(h) 0 277 #else 278 void bozo_cgi_setbin(bozohttpd_t *, const char *); 279 void bozo_setenv(bozohttpd_t *, const char *, const char *, char **); 280 int bozo_process_cgi(bozo_httpreq_t *); 281 void bozo_add_content_map_cgi(bozohttpd_t *, const char *, const char *); 282 #endif /* NO_CGIBIN_SUPPORT */ 283 284 285 /* lua-bozo.c */ 286 #ifdef NO_LUA_SUPPORT 287 #define bozo_process_lua(h) 0 288 #else 289 void bozo_add_lua_map(bozohttpd_t *, const char *, const char *); 290 int bozo_process_lua(bozo_httpreq_t *); 291 #endif /* NO_LUA_SUPPORT */ 292 293 294 /* daemon-bozo.c */ 295 #ifdef NO_DAEMON_MODE 296 #define bozo_daemon_init(x) do { /* nothing */ } while (0) 297 #define bozo_daemon_fork(x) 0 298 #define bozo_daemon_closefds(x) do { /* nothing */ } while (0) 299 #else 300 void bozo_daemon_init(bozohttpd_t *); 301 int bozo_daemon_fork(bozohttpd_t *); 302 void bozo_daemon_closefds(bozohttpd_t *); 303 #endif /* NO_DAEMON_MODE */ 304 305 306 /* tilde-luzah-bozo.c */ 307 #ifdef NO_USER_SUPPORT 308 #define bozo_user_transform(a, c) 0 309 #else 310 int bozo_user_transform(bozo_httpreq_t *, int *); 311 #endif /* NO_USER_SUPPORT */ 312 313 314 /* dir-index-bozo.c */ 315 #ifdef NO_DIRINDEX_SUPPORT 316 #define bozo_dir_index(a, b, c) 0 317 #else 318 int bozo_dir_index(bozo_httpreq_t *, const char *, int); 319 #endif /* NO_DIRINDEX_SUPPORT */ 320 321 322 /* content-bozo.c */ 323 const char *bozo_content_type(bozo_httpreq_t *, const char *); 324 const char *bozo_content_encoding(bozo_httpreq_t *, const char *); 325 bozo_content_map_t *bozo_match_content_map(bozohttpd_t *, const char *, int); 326 bozo_content_map_t *bozo_get_content_map(bozohttpd_t *, const char *); 327 #ifndef NO_DYNAMIC_CONTENT 328 void bozo_add_content_map_mime(bozohttpd_t *, const char *, const char *, const char *, const char *); 329 #endif 330 331 /* I/O */ 332 int bozo_printf(bozohttpd_t *, const char *, ...) BOZO_PRINTFLIKE(2, 3);; 333 ssize_t bozo_read(bozohttpd_t *, int, void *, size_t); 334 ssize_t bozo_write(bozohttpd_t *, int, const void *, size_t); 335 int bozo_flush(bozohttpd_t *, FILE *); 336 337 /* misc */ 338 int bozo_init_httpd(bozohttpd_t *); 339 int bozo_init_prefs(bozoprefs_t *); 340 int bozo_set_defaults(bozohttpd_t *, bozoprefs_t *); 341 int bozo_setup(bozohttpd_t *, bozoprefs_t *, const char *, const char *); 342 bozo_httpreq_t *bozo_read_request(bozohttpd_t *); 343 void bozo_process_request(bozo_httpreq_t *); 344 void bozo_clean_request(bozo_httpreq_t *); 345 346 /* variables */ 347 int bozo_set_pref(bozoprefs_t *, const char *, const char *); 348 char *bozo_get_pref(bozoprefs_t *, const char *); 349 350 #endif /* BOZOHTTOPD_H_ */ 351