#ifndef _PROJECT_H
#define _PROJECT_H
-#define PROJECT_H_VERSION "$Id: project.h,v 1.3 2001/05/20 01:21:20 jongfoster Exp $"
+#define PROJECT_H_VERSION "$Id: project.h,v 1.15 2001/06/04 11:28:53 swa Exp $"
/*********************************************************************
*
* File : $Source: /cvsroot/ijbswa/current/project.h,v $
*
* Revisions :
* $Log: project.h,v $
+ * 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
+ * Makefile/in
+ *
+ * introduced cgi.c
+ *
+ * actions.c:
+ *
+ * adapted to new enlist_unique arg format
+ *
+ * conf loadcfg.c
+ *
+ * introduced confdir option
+ *
+ * filters.c filtrers.h
+ *
+ * extracted-CGI relevant stuff
+ *
+ * jbsockets.c
+ *
+ * filled comment
+ *
+ * jcc.c
+ *
+ * support for new cgi mechansim
+ *
+ * list.c list.h
+ *
+ * functions for new list type: "map"
+ * extended enlist_unique
+ *
+ * miscutil.c .h
+ * introduced bindup()
+ *
+ * parsers.c parsers.h
+ *
+ * deleted const struct interceptors
+ *
+ * pcrs.c
+ * added FIXME
+ *
+ * project.h
+ *
+ * added struct map
+ * added struct http_response
+ * changes struct interceptors to struct cgi_dispatcher
+ * moved HTML stuff to cgi.h
+ *
+ * re_filterfile:
+ *
+ * changed
+ *
+ * showargs.c
+ * NO TIME LEFT
+ *
+ * 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 "permissionsfile".
+ * 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.
/* Need this for struct gateway */
struct client_state;
+/* Need this for struct client_state */
+struct configuration_spec;
+
+/* Generic linked list of strings */
+struct list /* FIXME: Why not separate entries and header? */
+{
+ char * str; /* valid in an entry */
+ struct list *last; /* valid in header */
+ struct list *next;
+};
+
+struct map
+{
+ char *name;
+ char *value;
+ struct map *next;
+};
+
+
+/* Generic linked list of strings */
+struct list_share /* FIXME: Why not separate entries and header? */
+{
+ const char * str; /* valid in an entry */
+ struct list_share *last; /* valid in header */
+ struct list_share *next;
+};
struct http_request
{
int ssl;
};
+/* CGI or blocker generated response */
+struct http_response
+{
+ char *status; /* HTTP status */
+ struct list headers[1]; /* List of header lines */
+ int content_length; /* Length of body, REQUIRED if binary body*/
+ char *head; /* Formatted http response head */
+ char *body; /* HTTP document body */
+};
+
struct gateway
{
/* generic attributes */
};
-struct proxy_args
+/* A URL pattern */
+struct url_spec
{
- char *header;
- char *invocation;
- char *gateways;
- char *trailer;
+ char *spec;
+ char *domain; /* fqdn */
+ char *dbuf;
+ char **dvec; /* Domain ptr vector */
+ int dcnt; /* How many domains in fqdn? */
+ int unanchored; /* bitmap 0: left, 1: right */
+
+ char *path;
+ int pathlen;
+ int port;
+#ifdef REGEX
+ regex_t *preg;
+#endif
};
+#define ANCHOR_LEFT 1
+#define ANCHOR_RIGHT 2
+
+
+/* An I/O buffer */
struct iob
{
char *buf;
};
-struct list
+#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));
+
+
+
+#define ACTION_MASK_ALL (~0U)
+
+#define ACTION_MOST_COMPATIBLE 0U
+
+#define ACTION_BLOCK 0x0001U
+#define ACTION_FAST_REDIRECTS 0x0002U
+#define ACTION_FILTER 0x0004U
+#define ACTION_HIDE_FORWARDED 0x0008U
+#define ACTION_HIDE_FROM 0x0010U
+#define ACTION_HIDE_REFERER 0x0020U /* sic - follow HTTP, not English */
+#define ACTION_HIDE_USER_AGENT 0x0040U
+#define ACTION_IMAGE 0x0080U
+#define ACTION_IMAGE_BLOCKER 0x0100U
+#define ACTION_NO_COOKIE_READ 0x0200U
+#define ACTION_NO_COOKIE_SET 0x0400U
+#define ACTION_NO_POPUPS 0x0800U
+#define ACTION_VANILLA_WAFER 0x1000U
+
+#define ACTION_STRING_FROM 0
+#define ACTION_STRING_IMAGE_BLOCKER 1
+#define ACTION_STRING_REFERER 2
+#define ACTION_STRING_USER_AGENT 3
+#define ACTION_STRING_COUNT 4
+
+#define ACTION_MULTI_ADD_HEADER 0
+#define ACTION_MULTI_WAFER 1
+#define ACTION_MULTI_COUNT 2
+
+
+struct current_action_spec
{
- char *str;
- struct list *last;
- struct list *next;
+ unsigned 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];
};
-#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));
+struct action_spec
+{
+ unsigned mask; /* a bit set to "0" = remove action */
+ unsigned 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];
+};
+
+struct url_actions
+{
+ struct url_spec url[1];
+
+ struct action_spec action[1];
+
+ struct url_actions * next;
+};
/* Constants defining bitmask for csp->accept_types */
struct client_state
{
- int permissions;
-
+ /* 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) */
int cfd;
+
+ /* socket to talk to server (web server or proxy) */
int sfd;
+
#ifdef STATISTICS
/* 1 if this URL was rejected, 0 otherwise. Allows actual stats inc to
* occur in main thread only for thread-safety.
#endif /* def FORCE_LOAD */
#ifdef TOGGLE
- /*
- * by haroon - most of credit to srt19170
- * We add an "on/off" toggle here that is used to effectively toggle
- * the Junkbuster off or on
- */
int toggled_on;
-#endif
+#endif /* def TOGGLE */
+ /*
+ * Client PC's IP address, as reported by the accept()_ function.
+ * Both as string and number
+ */
char *ip_addr_str;
long ip_addr_long;
+
+#ifdef TRUST_FILES
+ /* The referer in this request, if one was specified. */
char *referrer;
+#endif /* def TRUST_FILES */
#if defined(DETECT_MSIE_IMAGES)
/* Types the client will accept.
int accept_types;
#endif /* defined(DETECT_MSIE_IMAGES) */
- const struct gateway *gw;
+ /* 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];
+
#if defined(PCRS) || defined(KILLPOPUPS)
+ /* Nonzero if this has a text MIME type */
int is_text;
#endif /* defined(PCRS) || defined(KILLPOPUPS) */
+ /* The "X-Forwarded-For:" header sent by the client */
char *x_forwarded;
+ /*
+ * Nonzero if this client is processing data.
+ * Set to zero when the thread associated with this structure dies.
+ */
int active;
/* files associated with this client */
- struct file_list *blist; /* blockfile */
struct file_list *flist; /* forwardfile */
- struct file_list *permissions_list;
+ struct file_list *actions_list;
#ifdef ACL_FILES
struct file_list *alist; /* aclfile */
#endif /* def ACL_FILES */
-#ifdef USE_IMAGE_LIST
- struct file_list *ilist; /* imagefile */
-#endif /* def USE_IMAGE_LIST */
-
#ifdef PCRS
struct file_list *rlist; /* Perl re_filterfile */
+ size_t content_length; /* Length after processing */
#endif /* def PCRS */
#ifdef TRUST_FILES
char *(*parser)(const struct parsers *, char *, struct client_state *);
};
-
-struct interceptors
+struct cgi_dispatcher
{
- char *str;
- char len;
- char *(*interceptor)(struct http_request *http, struct client_state *csp);
-};
-
-
-/* this allows the proxy to permit/block access to any host and/or path */
-
-struct url_spec
-{
- char *spec;
- char *domain;
- char *dbuf;
- char **dvec;
- int dcnt;
- int toplevel;
-
- char *path;
- int pathlen;
- int port;
-#ifdef REGEX
- regex_t *preg;
-#endif
+ char *name;
+ int name_length;
+ int (*handler)(struct client_state *csp, struct http_response *rsp, struct map *parameters);
+ char *description;
};
-
struct file_list
{
/*
};
+#ifdef TRUST_FILES
struct block_spec
{
struct url_spec url[1];
int reject;
struct block_spec *next;
};
+#endif /* def TRUST_FILES */
-#define PERMIT_COOKIE_SET 0x0001
-#define PERMIT_COOKIE_READ 0x0002
-#define PERMIT_RE_FILTER 0x0004
-#define PERMIT_POPUPS 0x0008
-
-struct permissions_spec
-{
- struct url_spec url[1];
- int permissions;
- struct permissions_spec * next;
-};
-
struct forward_spec
{
struct url_spec url[1];
- int reject;
struct gateway gw[1];
struct forward_spec *next;
};
struct re_filterfile_spec
{
struct list patterns[1];
- /* See README.re_filter */
pcrs_job *joblist;
};
#endif /* def PCRS */
};
#endif /* def ACL_FILES */
+
+/* Maximum number of loaders (actions, block, forward, acl...) */
+#define NLOADERS 8
+
+/*
+ * 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;
+
+ const char *logfile;
+
+ const char *confdir;
+ const char *logdir;
+ const char *actions_file;
+ const char *forwardfile;
+
+#ifdef ACL_FILES
+ const char *aclfile;
+#endif /* def ACL_FILES */
+
+#ifdef PCRS
+ const char *re_filterfile;
+#endif /* def PCRS */
+
+#ifdef JAR_FILES
+ const char * jarfile;
+ FILE * jar;
+#endif /* def JAR_FILES */
+
+ /*
+ * Port and IP to bind to.
+ * Defaults to HADDR_DEFAULT:HADDR_PORT == 127.0.0.1:8000
+ */
+ const char *haddr;
+ int hport;
+
+#ifndef SPLIT_PROXY_ARGS
+ const char *suppress_message;
+#endif /* ndef SPLIT_PROXY_ARGS */
+
+#ifndef SPLIT_PROXY_ARGS
+ /* suppress listing config files */
+ int suppress_blocklists;
+#endif /* ndef SPLIT_PROXY_ARGS */
+
+#ifdef TRUST_FILES
+ const char * trustfile;
+
+ struct list trust_info[1];
+ struct url_spec *trust_list[64];
+#endif /* def TRUST_FILES */
+
+ /* Various strings for show-proxy-args */
+ char *proxy_args_header;
+ char *proxy_args_invocation;
+ char *proxy_args_gateways;
+ char *proxy_args_trailer;
+
+ /* 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))
#define WHITEBG "<body bgcolor=\"#ffffff\" link=\"#000078\" alink=\"#ff0022\" vlink=\"#787878\">\n"
#define FORCE_PREFIX "/IJB-FORCE-LOAD"
#endif /* def FORCE_LOAD */
-#define HOME_PAGE_URL "http://ijbswa.sourceforge.net/"
-#define REDIRECT_URL HOME_PAGE_URL "redirect.php?v=" VERSION "&to="
-
-static const char CFAIL[] =
- "HTTP/1.0 503 Connect failed\n"
- "Content-Type: text/html\n\n"
- "<html>\n"
- "<head>\n"
- "<title>Internet Junkbuster: Connect failed</title>\n"
- "</head>\n"
- BODY
- "<h1><center>"
- BANNER
- "</center></h1>"
- "TCP connection to '%s' failed: %s.\n<br>"
- "</body>\n"
- "</html>\n";
-
-static const char CNXDOM[] =
- "HTTP/1.0 404 Non-existent domain\n"
- "Content-Type: text/html\n\n"
- "<html>\n"
- "<head>\n"
- "<title>Internet Junkbuster: Non-existent domain</title>\n"
- "</head>\n"
- BODY
- "<h1><center>"
- BANNER
- "</center></h1>"
- "No such domain: %s\n"
- "</body>\n"
- "</html>\n";
-
-static const char CNOBANNER[] =
- "HTTP/1.0 200 No Banner\n"
- "Content-Type: text/html\n\n"
- "<html>\n"
- "<head>\n"
- "<title>Internet Junkbuster: No Banner</title>\n"
- "</head>\n"
- BODY
- "<h1><center>"
- BANNER
- "</h1>"
- "You asked for a banner that this proxy can't produce because either configuration does not permit.\n<br>"
- "or the URL didn't end with .gif\n"
- "</center></body>\n"
- "</html>\n";
+/* Shouldn't end with '/' */
+#define HOME_PAGE_URL "http://ijbswa.sourceforge.net"
+#define REDIRECT_URL HOME_PAGE_URL "/redirect.php?v=" VERSION "&to="
+
+#define CGI_PREFIX_HOST "i.j.b"
static const char CSUCCEED[] =
"HTTP/1.0 200 Connection established\n"
static const char SHEADER[] =
"HTTP/1.0 502 Invalid header received from server\n\n";
-#if defined(DETECT_MSIE_IMAGES) || defined(USE_IMAGE_LIST)
+#ifdef IMAGE_BLOCKING
/*
* Hint: You can encode your own GIFs like that:
"\372\003S\275\274k2\354\254z\347?\335\274x\306^9\374\276"
"\037Q\000\000;";
-#endif /* defined(DETECT_MSIE_IMAGES) || defined(USE_IMAGE_LIST) */
+#endif /* def IMAGE_BLOCKING */
-#if defined(FAST_REDIRECTS) || defined(DETECT_MSIE_IMAGES) || defined(USE_IMAGE_LIST)
+#if defined(FAST_REDIRECTS) || defined(IMAGE_BLOCKING)
static const char HTTP_REDIRECT_TEMPLATE[] =
"HTTP/1.0 302 Local Redirect from Junkbuster\r\n"
"Pragma: no-cache\r\n"
"Last-Modified: Thu Jul 31, 1997 07:42:22 pm GMT\r\n"
"Expires: Thu Jul 31, 1997 07:42:22 pm GMT\r\n"
- "Location: %s\r\n";
+ "Location: %s\r\n\r\n";
-#endif /* defined(DETECT_MSIE_IMAGES) || defined(USE_IMAGE_LIST) */
+#endif /* defined(FAST_REDIRECTS) || defined(IMAGE_BLOCKING) */
#ifdef __cplusplus
} /* extern "C" */
projects / privoxy.git / blobdiff