#ifndef PROJECT_H_INCLUDED #define PROJECT_H_INCLUDED #define PROJECT_H_VERSION "$Id: project.h,v 1.56 2002/03/13 20:27:30 oes Exp $" /********************************************************************* * * File : $Source: /cvsroot/ijbswa/current/project.h,v $ * * Purpose : Defines data structures which are widely used in the * project. Does not define any variables or functions * (though it does declare some macros). * * Copyright : Written by and Copyright (C) 2001 the SourceForge * IJBSWA team. http://ijbswa.sourceforge.net * * Based on the Internet Junkbuster originally written * by and Copyright (C) 1997 Anonymous Coders and * Junkbusters Corporation. http://www.junkbusters.com * * This program is free software; you can redistribute it * and/or modify it under the terms of the GNU General * Public License as published by the Free Software * Foundation; either version 2 of the License, or (at * your option) any later version. * * This program is distributed in the hope that it will * be useful, but WITHOUT ANY WARRANTY; without even the * implied warranty of MERCHANTABILITY or FITNESS FOR A * PARTICULAR PURPOSE. See the GNU General Public * License for more details. * * The GNU General Public License should be included with * this file. If not, you can view it at * http://www.gnu.org/copyleft/gpl.html * or write to the Free Software Foundation, Inc., 59 * Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * Revisions : * $Log: project.h,v $ * Revision 1.56 2002/03/13 20:27:30 oes * Fixing bug with CT_TABOO * * Revision 1.55 2002/03/12 01:42:50 oes * Introduced modular filters * * Revision 1.54 2002/03/09 20:03:52 jongfoster * - Making various functions return int rather than size_t. * (Undoing a recent change). Since size_t is unsigned on * Windows, functions like read_socket that return -1 on * error cannot return a size_t. * * THIS WAS A MAJOR BUG - it caused frequent, unpredictable * crashes, and also frequently caused JB to jump to 100% * CPU and stay there. (Because it thought it had just * read ((unsigned)-1) == 4Gb of data...) * * - The signature of write_socket has changed, it now simply * returns success=0/failure=nonzero. * * - Trying to get rid of a few warnings --with-debug on * Windows, I've introduced a new type "jb_socket". This is * used for the socket file descriptors. On Windows, this * is SOCKET (a typedef for unsigned). Everywhere else, it's * an int. The error value can't be -1 any more, so it's * now JB_INVALID_SOCKET (which is -1 on UNIX, and in * Windows it maps to the #define INVALID_SOCKET.) * * - The signature of bind_port has changed. * * Revision 1.53 2002/03/08 16:48:55 oes * Added FEATURE_NO_GIFS and BUILTIN_IMAGE_MIMETYPE * * Revision 1.52 2002/03/07 03:46:17 oes * Fixed compiler warnings * * Revision 1.51 2002/03/05 04:52:42 oes * Deleted non-errlog debugging code * * Revision 1.50 2002/03/04 19:32:07 oes * Changed default port to 8118 * * Revision 1.49 2002/03/04 18:28:55 oes * Deleted PID_FILE_NAME * * Revision 1.48 2002/03/03 14:50:40 oes * Fixed CLF logging: Added ocmd member for client's request to struct http_request * * Revision 1.47 2002/02/20 23:15:13 jongfoster * Parsing functions now handle out-of-memory gracefully by returning * an error code. * * Revision 1.46 2002/01/17 21:06:09 jongfoster * Now #defining the URLs of the config interface * * Minor changes to struct http_request and struct url_spec due to * standardizing that struct http_request is used to represent a URL, and * struct url_spec is used to represent a URL pattern. (Before, URLs were * represented as seperate variables and a partially-filled-in url_spec). * * Revision 1.45 2002/01/09 14:33:27 oes * Added HOSTENT_BUFFER_SIZE * * Revision 1.44 2001/12/30 14:07:32 steudten * - Add signal handling (unix) * - Add SIGHUP handler (unix) * - Add creation of pidfile (unix) * - Add action 'top' in rc file (RH) * - Add entry 'SIGNALS' to manpage * - Add exit message to logfile (unix) * * Revision 1.43 2001/11/22 21:57:51 jongfoster * Making action_spec->flags into an unsigned long rather than just an * unsigned int. * Adding ACTION_NO_COOKIE_KEEP * * Revision 1.42 2001/11/05 21:42:41 steudten * Include DBG() macro. * * Revision 1.41 2001/10/28 19:12:06 jongfoster * Adding ijb_toupper() * * Revision 1.40 2001/10/26 17:40:47 oes * Moved ijb_isspace and ijb_tolower to project.h * Removed http->user_agent, csp->referrer and csp->accept_types * * Revision 1.39 2001/10/25 03:45:02 david__schmidt * Adding a (void*) cast to freez() because Visual Age C++ won't expand the * macro when called with a cast; so moving the cast to the macro def'n * seems to both eliminate compiler warnings (on darwin and OS/2, anyway) and * doesn't make macro expansion complain. Hope this works for everyone else * too... * * Revision 1.38 2001/10/23 21:19:04 jongfoster * New error-handling support: jb_err type and JB_ERR_xxx constants * CGI functions now return a jb_err, and their parameters map is const. * Support for RUNTIME_FEATUREs to enable/disable config editor * Adding a few comments * * Revision 1.37 2001/10/14 22:14:01 jongfoster * Removing name_length field from struct cgi_dispatcher, as this is * now calculated at runtime from the "name" field. * * Revision 1.36 2001/10/10 16:45:15 oes * Added LIMIT_CONNECT action and string * Fixed HTTP message line termination * Added CFORBIDDEN HTTP message * * Revision 1.35 2001/10/07 18:06:43 oes * Added status member to struct http_request * * Revision 1.34 2001/10/07 15:45:25 oes * Added url member to struct http_request and commented all * members * * Added CT_TABOO * * Added ACTION_DOWNGRADE and ACTION_NO_COMPRESSION * * Replaced struct client_state members rejected, * force, active and toggled_on with "flags" bitmap. * * Added CSP_FLAG_MODIFIED and CSP_FLAG_CHUNKED * * Added buffer_limit to struct configuration_spec * * Revision 1.33 2001/09/20 13:30:08 steudten * * Make freez() more secure in case of: if (exp) { free(z) ; a=*z } * Last case will set z to NULL in free(z) and thats bad.. * * Revision 1.32 2001/09/16 23:02:51 jongfoster * Fixing warning * * Revision 1.31 2001/09/16 13:20:29 jongfoster * Rewrite of list library. Now has seperate header and list_entry * structures. Also added a large sprinking of assert()s to the list * code. * * Revision 1.30 2001/09/13 23:52:00 jongfoster * Support for both static and dynamically generated CGI pages * * Revision 1.29 2001/09/13 23:29:43 jongfoster * Defining FORWARD_SPEC_INITIALIZER * * Revision 1.28 2001/09/13 23:05:50 jongfoster * Changing the string paramater to the header parsers a "const". * * Revision 1.27 2001/08/05 16:06:20 jongfoster * Modifiying "struct map" so that there are now separate header and * "map_entry" structures. This means that functions which modify a * map no longer need to return a pointer to the modified map. * Also, it no longer reverses the order of the entries (which may be * important with some advanced template substitutions). * * Revision 1.26 2001/07/30 22:08:36 jongfoster * Tidying up #defines: * - All feature #defines are now of the form FEATURE_xxx * - Permanently turned off WIN_GUI_EDIT * - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS * * Revision 1.25 2001/07/29 18:43:08 jongfoster * Changing #ifdef _FILENAME_H to FILENAME_H_INCLUDED, to conform to * ANSI C rules. * * Revision 1.24 2001/07/25 17:20:27 oes * Introduced http->user_agent * * Revision 1.23 2001/07/18 12:32:23 oes * - Added ACTION_STRING_DEANIMATE * - moved #define freez from jcc.h to project.h * * Revision 1.22 2001/07/15 17:51:41 jongfoster * Renaming #define STATIC to STATIC_PCRE * * Revision 1.21 2001/07/13 14:03:19 oes * - Reorganized regex header inclusion and #defines to * comply to the scheme in configure.in * - Added csp->content_type and its CT_* keys * - Added ACTION_DEANIMATE * - Removed all #ifdef PCRS * * Revision 1.20 2001/06/29 21:45:41 oes * Indentation, CRLF->LF, Tab-> Space * * Revision 1.19 2001/06/29 13:33:36 oes * - Improved comments * - Introduced http_request.host_ip_addr_str * - Introduced http_response.head_length * - Introduced config.my_ip_addr_str, config.my_hostname, * config.admin_address and config.proxy_info_url * - Removed config.proxy_args_header and config.proxy_args_trailer, * renamed config.proxy_args_invocation to config.proxy_args * - Removed HTML snipplets and GIFs * - Removed logentry from cancelled commit * * Revision 1.18 2001/06/09 10:57:39 jongfoster * Adding definition of BUFFER_SIZE. * Changing struct cgi_dispatcher to use "const" strings. * * Revision 1.17 2001/06/07 23:15:09 jongfoster * Merging ACL and forward files into config file. * Moving struct gateway members into struct forward_spec * Removing config->proxy_args_gateways * Cosmetic: Adding a few comments * * Revision 1.16 2001/06/04 18:31:58 swa * files are now prefixed with either `confdir' or `logdir'. * `make redhat-dist' replaces both entries confdir and logdir * with redhat values * * Revision 1.15 2001/06/04 11:28:53 swa * redirect did not work due to missing / * * Revision 1.14 2001/06/03 11:03:48 oes * Added struct map, * added struct http_response, * changed struct interceptors to struct cgi_dispatcher, * moved HTML stuff to cgi.h * * Revision 1.13 2001/06/01 20:05:36 jongfoster * Support for +image-blocker{}: added ACTION_IMAGE_BLOCKER * constant, and removed csp->tinygif. * * Revision 1.12 2001/06/01 18:49:17 jongfoster * Replaced "list_share" with "list" - the tiny memory gain was not * worth the extra complexity. * * Revision 1.11 2001/06/01 10:32:47 oes * Added constants for anchoring selection bitmap * * Revision 1.10 2001/05/31 21:33:53 jongfoster * Changes for new actions file, replacing permissionsfile * and parts of the config file. Also added support for * list_shared. * * Revision 1.9 2001/05/31 17:32:31 oes * * - Enhanced domain part globbing with infix and prefix asterisk * matching and optional unanchored operation * * Revision 1.8 2001/05/29 20:09:15 joergs * HTTP_REDIRECT_TEMPLATE fixed. * * Revision 1.7 2001/05/29 09:50:24 jongfoster * Unified blocklist/imagelist/actionslist. * File format is still under discussion, but the internal changes * are (mostly) done. * * Also modified interceptor behaviour: * - We now intercept all URLs beginning with one of the following * prefixes (and *only* these prefixes): * * http://i.j.b/ * * http://ijbswa.sf.net/config/ * * http://ijbswa.sourceforge.net/config/ * - New interceptors "home page" - go to http://i.j.b/ to see it. * - Internal changes so that intercepted and fast redirect pages * are not replaced with an image. * - Interceptors now have the option to send a binary page direct * to the client. (i.e. ijb-send-banner uses this) * - Implemented show-url-info interceptor. (Which is why I needed * the above interceptors changes - a typical URL is * "http://i.j.b/show-url-info?url=www.somesite.com/banner.gif". * The previous mechanism would not have intercepted that, and * if it had been intercepted then it then it would have replaced * it with an image.) * * Revision 1.6 2001/05/27 22:17:04 oes * * - re_process_buffer no longer writes the modified buffer * to the client, which was very ugly. It now returns the * buffer, which it is then written by chat. * * - content_length now adjusts the Content-Length: header * for modified documents rather than crunch()ing it. * (Length info in csp->content_length, which is 0 for * unmodified documents) * * - For this to work, sed() is called twice when filtering. * * Revision 1.5 2001/05/26 00:28:36 jongfoster * Automatic reloading of config file. * Removed obsolete SIGHUP support (Unix) and Reload menu option (Win32). * Most of the global variables have been moved to a new * struct configuration_spec, accessed through csp->config->globalname * Most of the globals remaining are used by the Win32 GUI. * * Revision 1.4 2001/05/22 18:46:04 oes * * - Enabled filtering banners by size rather than URL * by adding patterns that replace all standard banner * sizes with the "Junkbuster" gif to the re_filterfile * * - Enabled filtering WebBugs by providing a pattern * which kills all 1x1 images * * - Added support for PCRE_UNGREEDY behaviour to pcrs, * which is selected by the (nonstandard and therefore * capital) letter 'U' in the option string. * It causes the quantifiers to be ungreedy by default. * Appending a ? turns back to greedy (!). * * - Added a new interceptor ijb-send-banner, which * sends back the "Junkbuster" gif. Without imagelist or * MSIE detection support, or if tinygif = 1, or the * URL isn't recognized as an imageurl, a lame HTML * explanation is sent instead. * * - Added new feature, which permits blocking remote * script redirects and firing back a local redirect * to the browser. * The feature is conditionally compiled, i.e. it * can be disabled with --disable-fast-redirects, * plus it must be activated by a "fast-redirects" * line in the config file, has its own log level * and of course wants to be displayed by show-proxy-args * Note: Boy, all the #ifdefs in 1001 locations and * all the fumbling with configure.in and acconfig.h * were *way* more work than the feature itself :-( * * - Because a generic redirect template was needed for * this, tinygif = 3 now uses the same. * * - Moved GIFs, and other static HTTP response templates * to project.h * * - Some minor fixes * * - Removed some >400 CRs again (Jon, you really worked * a lot! ;-) * * Revision 1.3 2001/05/20 01:21:20 jongfoster * Version 2.9.4 checkin. * - Merged popupfile and cookiefile, and added control over PCRS * filtering, in new "actionsfile". * - Implemented LOG_LEVEL_FATAL, so that if there is a configuration * file error you now get a message box (in the Win32 GUI) rather * than the program exiting with no explanation. * - Made killpopup use the PCRS MIME-type checking and HTTP-header * skipping. * - Removed tabs from "config" * - Moved duplicated url parsing code in "loaders.c" to a new funcition. * - Bumped up version number. * * Revision 1.2 2001/05/17 23:01:01 oes * - Cleaned CRLF's from the sources and related files * * Revision 1.1.1.1 2001/05/15 13:59:03 oes * Initial import of version 2.9.3 source tree * * *********************************************************************/ /* Declare struct FILE for vars and funcs. */ #include /* Need time_t for file_list */ #include /* * Include appropriate regular expression libraries. * Note that pcrs and pcre (native) are needed for cgi * and are included anyway. */ #if defined(REGEX_PCRE) || defined (REGEX_GNU) # define REGEX #endif /* defined(REGEX_PCRE) || defined (REGEX_GNU) */ #ifdef STATIC_PCRE # include "pcre.h" #else # include #endif #ifdef STATIC_PCRS # include "pcrs.h" #else # include #endif #if defined(REGEX_PCRE) # ifdef STATIC_PCRE # include "pcreposix.h" # else # include # endif #endif /* defined(REGEX_PCRE) */ #if defined(REGEX_GNU) # include "gnu_regex.h" #endif #ifdef AMIGA #include "amiga.h" #endif /* def AMIGA */ #ifdef _WIN32 /* * I don't want to have to #include all this just for the declaration * of SOCKET. However, it looks like we have to... */ #include #endif #ifdef __cplusplus extern "C" { #endif /* * The type used by sockets. On UNIX it's an int. Microsoft decided to * make it an unsigned. */ #ifdef _WIN32 typedef SOCKET jb_socket; #define JB_INVALID_SOCKET INVALID_SOCKET #else /* ndef _WIN32 */ typedef int jb_socket; #define JB_INVALID_SOCKET (-1) #endif /* ndef _WIN32 */ /* * Error codes. Functions returning these should return a jb_err */ #define JB_ERR_OK 0 /* Success, no error */ #define JB_ERR_MEMORY 1 /* Out of memory */ #define JB_ERR_CGI_PARAMS 2 /* Missing or corrupt CGI parameters */ #define JB_ERR_FILE 3 /* Error opening, reading or writing a file */ #define JB_ERR_PARSE 4 /* Error parsing file */ #define JB_ERR_MODIFIED 5 /* File has been modified outside of the */ /* CGI actions editor. */ typedef int jb_err; /* * This macro is used to free a pointer that may be NULL */ #define freez(X) { if(X) { free((void*)X); X = NULL ; } } /* Fix a problem with Solaris. There should be no effect on other * platforms. * Solaris's isspace() is a macro which uses it's argument directly * as an array index. Therefore we need to make sure that high-bit * characters generate +ve values, and ideally we also want to make * the argument match the declared parameter type of "int". * * Note: Remember to #include if you use these macros. */ #define ijb_toupper(__X) toupper((int)(unsigned char)(__X)) #define ijb_tolower(__X) tolower((int)(unsigned char)(__X)) #define ijb_isspace(__X) isspace((int)(unsigned char)(__X)) /* * Use for statically allocated buffers if you have no other choice. * Remember to check the length of what you write into the buffer * - we don't want any buffer overflows! */ #define BUFFER_SIZE 5000 /* * Buffer size for capturing struct hostent data in the * gethostby(name|addr)_r library calls. Since we don't * loop over gethostbyname_r, the buffer must be sufficient * to accomodate multiple IN A RRs, as used in DNS round robin * load balancing. W3C's wwwlib uses 1K, so that should be * good enough for us, too. */ #define HOSTENT_BUFFER_SIZE 1024 /* * So you can say "while (FOREVER) { ...do something... }" */ #define FOREVER 1 /* Default IP and port to listen on */ #define HADDR_DEFAULT "127.0.0.1" #define HADDR_PORT 8118 /* Forward defs for various structures */ /* Need this for struct client_state */ struct configuration_spec; /* Generic linked list of strings */ struct list_entry { const char *str; struct list_entry *next; }; struct list { struct list_entry *first; struct list_entry *last; }; /* A map from a string to another string */ struct map_entry { const char *name; const char *value; struct map_entry *next; }; struct map { struct map_entry *first; struct map_entry *last; }; struct http_request { char *cmd; /* Whole command line: method, URL, Version */ char *ocmd; /* Backup of original cmd for CLF logging */ char *gpc; /* HTTP method: GET, POST, .. */ char *url; /* The URL */ char *ver; /* Protocol version */ int status; /* HTTP Status */ char *host; /* Host part of URL */ int port; /* Port of URL or 80 (default) */ char *path; /* Path of URL */ char *hostport; /* host[:port] */ int ssl; /* Flag if protocol is https */ char *host_ip_addr_str; /* String with dotted decimal representation * of host's IP. NULL before connect_to() */ char *dbuffer; /* Buffer with '\0'-delimited domain name. */ char **dvec; /* List of pointers to the strings in dbuffer. */ int dcount; /* How many parts to this domain? (length of dvec) */ }; /* * Response generated by CGI, blocker, or error handler */ struct http_response { char *status; /* HTTP status (string) */ struct list headers[1]; /* List of header lines */ char *head; /* Formatted http response head */ size_t head_length; /* Length of http response head */ char *body; /* HTTP document body */ size_t content_length; /* Length of body, REQUIRED if binary body */ int is_static; /* Nonzero if the content will never change and * should be cached by the brwoser (e.g. images) */ }; /* A URL pattern */ struct url_spec { char *spec; /* The string which was parsed to produce this */ /* url_spec. Used for debugging or display only. */ /* Hostname matching, or dbuffer == NULL to match all hosts */ char *dbuffer; /* Buffer with '\0'-delimited domain name. */ char **dvec; /* List of pointers to the strings in dbuffer. */ int dcount; /* How many parts to this domain? (length of dvec) */ int unanchored; /* Bitmap - flags are ANCHOR_LEFT and ANCHOR_RIGHT. */ /* Port matching: */ int port; /* The port number, or 0 to match all ports. */ /* Path matching: */ char *path; /* The path prefix (if not using regex), or source */ /* for the regex. */ int pathlen; /* ==strlen(path). Needed for prefix matching. */ #ifdef REGEX regex_t *preg; /* Regex for matching path part */ #endif }; #ifdef REGEX #define URL_SPEC_INITIALIZER { NULL, NULL, NULL, 0, 0, 0, NULL, 0, NULL } #else /* ifndef REGEX */ #define URL_SPEC_INITIALIZER { NULL, NULL, NULL, 0, 0, 0, NULL, 0 } #endif /* ndef REGEX */ /* Constants for host part matching in URLs */ #define ANCHOR_LEFT 1 #define ANCHOR_RIGHT 2 /* An I/O buffer */ struct iob { char *buf; char *cur; char *eod; }; #define IOB_PEEK(CSP) ((CSP->iob->cur > CSP->iob->eod) ? (CSP->iob->eod - CSP->iob->cur) : 0) #define IOB_RESET(CSP) if(CSP->iob->buf) free(CSP->iob->buf); memset(CSP->iob, '\0', sizeof(CSP->iob)); /* Bits for csp->content_type */ #define CT_TEXT 1 /* Suitable for pcrs filtering */ #define CT_GIF 2 /* Suitable for GIF filtering */ #define CT_TABOO 4 /* DONT filter */ #define ACTION_MASK_ALL (~0U) #define ACTION_MOST_COMPATIBLE 0x00000000UL #define ACTION_BLOCK 0x00000001UL #define ACTION_DEANIMATE 0x00000002UL #define ACTION_DOWNGRADE 0x00000004UL #define ACTION_FAST_REDIRECTS 0x00000008UL #define ACTION_HIDE_FORWARDED 0x00000010UL #define ACTION_HIDE_FROM 0x00000020UL #define ACTION_HIDE_REFERER 0x00000040UL /* sic - follow HTTP, not English */ #define ACTION_HIDE_USER_AGENT 0x00000080UL #define ACTION_IMAGE 0x00000100UL #define ACTION_IMAGE_BLOCKER 0x00000200UL #define ACTION_NO_COMPRESSION 0x00000400UL #define ACTION_NO_COOKIE_KEEP 0x00000800UL #define ACTION_NO_COOKIE_READ 0x00001000UL #define ACTION_NO_COOKIE_SET 0x00002000UL #define ACTION_NO_POPUPS 0x00004000UL #define ACTION_VANILLA_WAFER 0x00008000UL #define ACTION_LIMIT_CONNECT 0x00010000UL #define ACTION_STRING_DEANIMATE 0 #define ACTION_STRING_FROM 1 #define ACTION_STRING_IMAGE_BLOCKER 2 #define ACTION_STRING_REFERER 3 #define ACTION_STRING_USER_AGENT 4 #define ACTION_STRING_LIMIT_CONNECT 5 #define ACTION_STRING_COUNT 6 #define ACTION_MULTI_ADD_HEADER 0 #define ACTION_MULTI_WAFER 1 #define ACTION_MULTI_FILTER 2 #define ACTION_MULTI_COUNT 3 /* * This structure contains a list of actions to apply to a URL. * It only contains positive instructions - no "-" options. * It is not used to store the actions list itself, only for * url_actions() to return the current values. */ struct current_action_spec { unsigned long flags; /* a bit set to "1" = add action */ /* For those actions that require parameters: */ /* each entry is valid if & only if corresponding entry in "add" set. */ char * string[ACTION_STRING_COUNT]; /* Strings to add */ struct list multi[ACTION_MULTI_COUNT][1]; }; /* * This structure contains a set of changes to actions. * It can contain both positive and negative instructions. * It is used to store an entry in the actions list. */ struct action_spec { unsigned long mask; /* a bit set to "0" = remove action */ unsigned long add; /* a bit set to "1" = add action */ /* For those actions that require parameters: */ /* each entry is valid if & only if corresponding entry in "add" set. */ char * string[ACTION_STRING_COUNT]; /* Strings to remove. */ struct list multi_remove[ACTION_MULTI_COUNT][1]; /* If nonzero, remove *all* strings. */ int multi_remove_all[ACTION_MULTI_COUNT]; /* Strings to add */ struct list multi_add[ACTION_MULTI_COUNT][1]; }; /* * This structure is used to store the actions list. * * It contains a URL pattern, and the chages to the actions. * It is a linked list. */ struct url_actions { struct url_spec url[1]; struct action_spec action[1]; struct url_actions * next; }; /* * Flags for use in csp->flags */ #define CSP_FLAG_ACTIVE 0x01 /* Set if this client is processing data. * Cleared when the thread associated with * this structure dies. */ #define CSP_FLAG_CHUNKED 0x02 /* Set if the server's reply is in "chunked" * transfer encoding */ #define CSP_FLAG_FORCED 0x04 /* Set if this request was enforced, although * it would normally have been blocked. */ #define CSP_FLAG_MODIFIED 0x08 /* Set if any modification to the body was done */ #define CSP_FLAG_REJECTED 0x10 /* Set if request was blocked. */ #define CSP_FLAG_TOGGLED_ON 0x20 /* Set if we are toggled on (FEATURE_TOGGLE) */ /* * The state of a JunkBuster processing thread. */ struct client_state { /* The proxy's configuration */ struct configuration_spec * config; /* The actions to perform on the current request */ struct current_action_spec action[1]; /* socket to talk to client (web browser) */ jb_socket cfd; /* socket to talk to server (web server or proxy) */ jb_socket sfd; /* Multi-purpose flag container, see CSP_FLAG_* above */ unsigned short int flags; /* * Client PC's IP address, as reported by the accept()_ function. * Both as string and number */ char *ip_addr_str; long ip_addr_long; /* Our IP address and hostname, i.e. the IP address that the client used to reach us, and the associated hostname, both as strings */ char *my_ip_addr_str; char *my_hostname; /* The URL that was requested */ struct http_request http[1]; /* An I/O buffer used for buffering data read from the client */ struct iob iob[1]; /* List of all headers for this request */ struct list headers[1]; /* List of all cookies for this request */ struct list cookie_list[1]; /* MIME-Type key, see CT_* above */ unsigned short int content_type; /* The "X-Forwarded-For:" header sent by the client */ char *x_forwarded; /* files associated with this client */ struct file_list *actions_list; struct file_list *rlist; /* pcrs job file */ size_t content_length; /* Length after content modification */ #ifdef FEATURE_TRUST struct file_list *tlist; /* trustfile */ #endif /* def FEATURE_TRUST */ struct client_state *next; }; /* * A function to add a header */ typedef jb_err (*add_header_func_ptr)(struct client_state *); /* * A function to process a header */ typedef jb_err (*parser_func_ptr )(struct client_state *, char **); /* * List of functions to run on a list of headers */ struct parsers { char *str; size_t len; parser_func_ptr parser; }; /* * List of available CGI functions. */ struct cgi_dispatcher { const char * const name; jb_err (* const handler)(struct client_state *csp, struct http_response *rsp, const struct map *parameters); const char * const description; }; /* * A data file used by JunkBuster. Kept in a linked list. */ struct file_list { /* * this is a pointer to the data structures associated with the file. * Read-only once the structure has been created. */ void *f; /* Normally NULL. When we are finished with file (i.e. when we have * loaded a new one), set to a pointer to an unloader function. * Unloader will be called by sweep() (called from main loop) when * all clients using this file are done. This prevents threading * problems. */ void (*unloader)(void *); /* Used internally by sweep(). Do not access from elsewhere. */ int active; /* Following variables allow us to check if file has been changed. * Read-only once the structure has been created. */ time_t lastmodified; char * filename; /* Pointer to next entry in the linked list of all "file_list"s. * This linked list is so that sweep() can navigate it. * Since sweep() can remove items from the list, we must be careful * to only access this value from main thread (when we know sweep * won't be running). */ struct file_list *next; }; #ifdef FEATURE_TRUST struct block_spec { struct url_spec url[1]; int reject; struct block_spec *next; }; #endif /* def FEATURE_TRUST */ #define SOCKS_NONE 0 /* Don't use a SOCKS server */ #define SOCKS_4 40 /* original SOCKS 4 protocol */ #define SOCKS_4A 41 /* as modified for hosts w/o external DNS */ struct forward_spec { struct url_spec url[1]; /* Connection type - must be a SOCKS_xxx constant */ int type; /* SOCKS server */ char *gateway_host; int gateway_port; /* Parent HTTP proxy */ char *forward_host; int forward_port; /* For the linked list */ struct forward_spec *next; }; #define FORWARD_SPEC_INITIALIZER { { URL_SPEC_INITIALIZER }, 0, NULL, 0, NULL, 0, NULL } /* * This struct represents one filter (one block) from * the re_filterfile. If there is more than one filter * in the file, the file will be represented by a * chained list of re_filterfile specs. */ struct re_filterfile_spec { char *name; /* Name from FILTER: statement in re_filterfile */ char *description; /* Description from FILTER: statement in re_filterfile */ struct list patterns[1]; /* The patterns from the re_filterfile */ pcrs_job *joblist; /* The resulting compiled pcrs_jobs */ struct re_filterfile_spec *next; /* The pointer for chaining */ }; #ifdef FEATURE_ACL #define ACL_PERMIT 1 /* accept connection request */ #define ACL_DENY 2 /* reject connection request */ struct access_control_addr { unsigned long addr; unsigned long mask; unsigned long port; }; struct access_control_list { struct access_control_addr src[1]; struct access_control_addr dst[1]; short action; struct access_control_list *next; }; #endif /* def FEATURE_ACL */ /* Maximum number of loaders (actions, re_filter, ...) */ #define NLOADERS 8 #define RUNTIME_FEATURE_CGI_EDIT_ACTIONS 1 #define RUNTIME_FEATURE_CGI_TOGGLE 2 /* * Data loaded from the configuration file. * * (Anomaly: toggle is still handled through a global, not this structure) */ struct configuration_spec { int debug; int multi_threaded; /* Features that can be enabled/disabled throuigh the config file */ unsigned feature_flags; const char *logfile; const char *confdir; const char *logdir; const char *actions_file; /* The administrator's email address */ char *admin_address; /* A URL with info on this proxy */ char *proxy_info_url; const char *re_filterfile; #ifdef FEATURE_COOKIE_JAR const char * jarfile; FILE * jar; #endif /* def FEATURE_COOKIE_JAR */ /* * Port and IP to bind to. * Defaults to HADDR_DEFAULT:HADDR_PORT == 127.0.0.1:8118 */ const char *haddr; int hport; /* Size limit for IOB */ size_t buffer_limit; #ifdef FEATURE_TRUST const char * trustfile; struct list trust_info[1]; struct url_spec *trust_list[64]; #endif /* def FEATURE_TRUST */ #ifdef FEATURE_ACL struct access_control_list *acl; #endif /* def FEATURE_ACL */ struct forward_spec *forward; /* All options from the config file, HTML-formatted */ char *proxy_args; /* the configuration file object. */ struct file_list *config_file_list; /* List of loaders */ int (*loaders[NLOADERS])(struct client_state *); /* bool, nonzero if we need to bind() to the new port */ int need_bind; }; #define SZ(X) (sizeof(X) / sizeof(*X)) #ifdef FEATURE_FORCE_LOAD #define FORCE_PREFIX "/IJB-FORCE-LOAD" #endif /* def FEATURE_FORCE_LOAD */ #ifdef FEATURE_NO_GIFS #define BUILTIN_IMAGE_MIMETYPE "image/png" #else #define BUILTIN_IMAGE_MIMETYPE "image/gif" #endif /* def FEATURE_NO_GIFS */ /* Hardwired URLs */ #define HOME_PAGE_URL "http://ijbswa.sourceforge.net" #define REDIRECT_URL HOME_PAGE_URL "/redirect.php?v=" VERSION "&to=" /* * The "hosts" to intercept and display CGI pages. * First one is a hostname only, second one can specify host and path. * * Notes: * 1) Do not specify the http: prefix * 2) CGI_SITE_2_PATH must not end with /, one will be added automatically. * 3) CGI_SITE_2_PATH must start with /, unless it is the empty string. */ #define CGI_SITE_1_HOST "i.j.b" #define CGI_SITE_2_HOST "ijbswa.sourceforge.net" #define CGI_SITE_2_PATH "/config" /* * The prefix for CGI pages. Written out in generated HTML. * INCLUDES the trailing slash. */ #define CGI_PREFIX "http://" CGI_SITE_2_HOST CGI_SITE_2_PATH "/" /* HTTP snipplets */ static const char CSUCCEED[] = "HTTP/1.0 200 Connection established\n" "Proxy-Agent: IJ/" VERSION "\r\n\r\n"; static const char CHEADER[] = "HTTP/1.0 400 Invalid header received from browser\r\n\r\n"; static const char CFORBIDDEN[] = "HTTP/1.0 403 Connection not allowable\r\nX-Hint: If you read this message interactively, then you know why this happens ,-)\r\n\r\n"; #ifdef __cplusplus } /* extern "C" */ #endif #endif /* ndef PROJECT_H_INCLUDED */ /* Local Variables: tab-width: 3 end: */