#ifndef PROJECT_H_INCLUDED
#define PROJECT_H_INCLUDED
-#define PROJECT_H_VERSION "$Id: project.h,v 1.31 2001/09/16 13:20:29 jongfoster Exp $"
+#define PROJECT_H_VERSION "$Id: project.h,v 1.42 2001/11/05 21:42:41 steudten Exp $"
/*********************************************************************
*
* File : $Source: /cvsroot/ijbswa/current/project.h,v $
* IJBSWA team. http://ijbswa.sourceforge.net
*
* Based on the Internet Junkbuster originally written
- * by and Copyright (C) 1997 Anonymous Coders and
+ * by and Copyright (C) 1997 Anonymous Coders and
* Junkbusters Corporation. http://www.junkbusters.com
*
- * This program is free software; you can redistribute it
+ * 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
*
* Revisions :
* $Log: project.h,v $
+ * 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
#endif
#ifdef STATIC_PCRS
-# include "pcrs.h"
+# include "pcrs.h"
#else
-# include <pcrs.h>
+# include <pcrs.h>
#endif
#if defined(REGEX_PCRE)
# include "gnu_regex.h"
#endif
-#ifdef AMIGA
-#include "amiga.h"
+#ifdef AMIGA
+#include "amiga.h"
#endif /* def AMIGA */
#ifdef __cplusplus
extern "C" {
#endif
-#define freez(X) if(X) free(X); X = NULL
+#ifdef _DEBUG
+extern int ldebug;
+#define DBG(a,b) { if ( ldebug >= a ) { printf b ; }}
+#else
+#define DBG(a,b)
+#endif /* _DEBUG */
+
+
+/*
+ * 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 <ctype.h> 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
+/*
+ * So you can say "while (FOREVER) { ...do something... }"
+ */
#define FOREVER 1
/* Default IP and port to listen on */
struct http_request
{
- char *cmd;
- char *gpc;
- char *host;
- char *host_ip_addr_str; /* NULL before connect_to() */
- int port;
- char *path;
- char *ver;
- char *hostport; /* "host[:port]" */
- int ssl;
- char *user_agent; /* Client's User-Agent: header value */
+ char *cmd; /* Whole command line: method, URL, Version */
+ 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() */
};
/* Response generated by CGI, blocker, or error handler */
#define IOB_RESET(CSP) if(CSP->iob->buf) free(CSP->iob->buf); memset(CSP->iob, '\0', sizeof(CSP->iob));
/* Keys for csp->content_type */
-#define CT_TEXT 0x01U
-#define CT_GIF 0x02U
+#define CT_TEXT 1 /* Suitable for pcrs filtering */
+#define CT_GIF 2 /* Suitable for GIF filtering */
+#define CT_TABOO 3 /* DONT filter */
#define ACTION_MASK_ALL (~0U)
-#define ACTION_MOST_COMPATIBLE 0x0000U
-
-#define ACTION_BLOCK 0x0001U
-#define ACTION_DEANIMATE 0x2000U
-#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_MOST_COMPATIBLE 0x00000000UL
+
+#define ACTION_BLOCK 0x00000001UL
+#define ACTION_DEANIMATE 0x00000002UL
+#define ACTION_DOWNGRADE 0x00000004UL
+#define ACTION_FAST_REDIRECTS 0x00000008UL
+#define ACTION_FILTER 0x00000010UL
+#define ACTION_HIDE_FORWARDED 0x00000020UL
+#define ACTION_HIDE_FROM 0x00000040UL
+#define ACTION_HIDE_REFERER 0x00000080UL /* sic - follow HTTP, not English */
+#define ACTION_HIDE_USER_AGENT 0x00000100UL
+#define ACTION_IMAGE 0x00000200UL
+#define ACTION_IMAGE_BLOCKER 0x00000400UL
+#define ACTION_NO_COMPRESSION 0x00000800UL
+#define ACTION_NO_COOKIE_KEEP 0x00001000UL
+#define ACTION_NO_COOKIE_READ 0x00002000UL
+#define ACTION_NO_COOKIE_SET 0x00004000UL
+#define ACTION_NO_POPUPS 0x00008000UL
+#define ACTION_VANILLA_WAFER 0x00010000UL
+#define ACTION_LIMIT_CONNECT 0x00020000UL
#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_COUNT 5
-
+#define ACTION_STRING_LIMIT_CONNECT 5
+#define ACTION_STRING_COUNT 6
#define ACTION_MULTI_ADD_HEADER 0
#define ACTION_MULTI_WAFER 1
*/
struct current_action_spec
{
- unsigned flags; /* a bit set to "1" = add action */
+ unsigned long flags; /* a bit set to "1" = add action */
/* For those actions that require parameters: */
*/
struct action_spec
{
- unsigned mask; /* a bit set to "0" = remove action */
- unsigned add; /* a bit set to "1" = add action */
+ 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: */
};
-/* Constants defining bitmask for csp->accept_types */
-
-#ifdef FEATURE_IMAGE_DETECT_MSIE
-
-/* MSIE detected by user-agent string */
-#define ACCEPT_TYPE_IS_MSIE 0x0001
-
/*
- * *If* this is MSIE, it wants an image. (Or this is a shift-reload, or
- * it's got an image from this URL before... yuck!)
- * Only meaningful if ACCEPT_TYPE_IS_MSIE set
+ * Flags for use in csp->flags
*/
-#define ACCEPT_TYPE_MSIE_IMAGE 0x0002
+#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) */
/*
- * *If* this is MSIE, it wants a HTML document.
- * Only meaningful if ACCEPT_TYPE_IS_MSIE set
+ * The state of a JunkBuster processing thread.
*/
-#define ACCEPT_TYPE_MSIE_HTML 0x0004
-
-#endif /* def FEATURE_IMAGE_DETECT_MSIE */
-
-
struct client_state
{
/* The proxy's configuration */
/* socket to talk to server (web server or proxy) */
int sfd;
-
-#ifdef FEATURE_STATISTICS
- /* 1 if this URL was rejected, 0 otherwise. Allows actual stats inc to
- * occur in main thread only for thread-safety.
- */
- int rejected;
-#endif /* def FEATURE_STATISTICS */
-
-#ifdef FEATURE_FORCE_LOAD
- int force;
-#endif /* def FEATURE_FORCE_LOAD */
-
-#ifdef FEATURE_TOGGLE
- int toggled_on;
-#endif /* def FEATURE_TOGGLE */
+ /* Multi-purpose flag container, see CSP_FLAG_* above */
+ unsigned short int flags;
/*
* Client PC's IP address, as reported by the accept()_ function.
char *my_ip_addr_str;
char *my_hostname;
-#ifdef FEATURE_TRUST
- /* The referer in this request, if one was specified. */
- char *referrer;
-#endif /* def FEATURE_TRUST */
-
-#if defined(FEATURE_IMAGE_DETECT_MSIE)
- /* Types the client will accept.
- * Bitmask - see ACCEPT_TYPE_XXX constants.
- */
- int accept_types;
-#endif /* defined(FEATURE_IMAGE_DETECT_MSIE) */
-
/* The URL that was requested */
struct http_request http[1];
/* List of all cookies for this request */
struct list cookie_list[1];
- /* MIME-Type bitmap, see CT_* above */
- unsigned char content_type;
+ /* MIME-Type key, see CT_* above */
+ unsigned short int content_type;
/* 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 *actions_list;
struct file_list *rlist; /* pcrs job file */
- size_t content_length; /* Length after content modification */
+ size_t content_length; /* Length after content modification */
#ifdef FEATURE_TRUST
struct file_list *tlist; /* trustfile */
};
+/*
+ * List of functions to run on a list of headers
+ */
struct parsers
{
char *str;
char *(*parser)(const struct parsers *, const char *, struct client_state *);
};
+
+/*
+ * List of available CGI functions.
+ */
struct cgi_dispatcher
{
- const char *name;
- int name_length;
- int (*handler)(struct client_state *csp, struct http_response *rsp, struct map *parameters);
- const char *description;
+ 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
{
/*
* 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
+ * all clients using this file are done. This prevents threading
* problems.
*/
void (*unloader)(void *);
/* 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.
*
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 *haddr;
int hport;
+ /* Size limit for IOB */
+ size_t buffer_limit;
+
#ifdef FEATURE_TRUST
const char * trustfile;
/* HTTP snipplets */
static const char CSUCCEED[] =
"HTTP/1.0 200 Connection established\n"
- "Proxy-Agent: IJ/" VERSION "\n\n";
+ "Proxy-Agent: IJ/" VERSION "\r\n\r\n";
static const char CHEADER[] =
- "HTTP/1.0 400 Invalid header received from browser\n\n";
+ "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" */
projects / privoxy.git / blobdiff