#ifndef PROJECT_H_INCLUDED
#define PROJECT_H_INCLUDED
-#define PROJECT_H_VERSION "$Id: project.h,v 1.42 2001/11/05 21:42:41 steudten Exp $"
+#define PROJECT_H_VERSION "$Id: project.h,v 1.55 2002/03/12 01:42:50 oes Exp $"
/*********************************************************************
*
* File : $Source: /cvsroot/ijbswa/current/project.h,v $
*
* Revisions :
* $Log: project.h,v $
+ * 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.
*
#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 <windows.h>
+#endif
+
+
#ifdef __cplusplus
extern "C" {
#endif
-#ifdef _DEBUG
-extern int ldebug;
-#define DBG(a,b) { if ( ldebug >= a ) { printf b ; }}
-#else
-#define DBG(a,b)
-#endif /* _DEBUG */
-
+/*
+ * 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 */
/*
*/
#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... }"
*/
/* Default IP and port to listen on */
#define HADDR_DEFAULT "127.0.0.1"
-#define HADDR_PORT 8000
-
+#define HADDR_PORT 8118
/* Forward defs for various structures */
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 */
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 */
+/*
+ * Response generated by CGI, blocker, or error handler
+ */
struct http_response
{
- char *status; /* HTTP status (string)*/
+ char *status; /* HTTP status (string) */
struct list headers[1]; /* List of header lines */
- char *head; /* Formatted http response head */
- int head_length; /* Length of http response head */
- char *body; /* HTTP document body */
- int 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 broser (e.g. images) */
+ 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 */
char *spec; /* The string which was parsed to produce this */
/* url_spec. Used for debugging or display only. */
- /* Hostname matching: */
- char *domain; /* Fully qalified domain name (FQDN) pattern. */
- /* May contain "*". */
- char *dbuf; /* Buffer with '\0'-delimited fqdn */
- char **dvec; /* Domain ptr vector into dbuf */
- int dcnt; /* How many domains in fqdn? */
- int unanchored; /* Bitmap - flags are ANCHOR_LEFT and ANCHOR_RIGHT */
+ /* 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. */
#endif
};
#ifdef REGEX
-#define URL_SPEC_INITIALIZER { NULL, NULL, NULL, NULL, 0, 0, 0, NULL, 0, NULL }
+#define URL_SPEC_INITIALIZER { NULL, NULL, NULL, 0, 0, 0, NULL, 0, NULL }
#else /* ifndef REGEX */
-#define URL_SPEC_INITIALIZER { NULL, NULL, NULL, NULL, 0, 0, 0, NULL, 0 }
+#define URL_SPEC_INITIALIZER { NULL, NULL, NULL, 0, 0, 0, NULL, 0 }
#endif /* ndef REGEX */
/* Constants for host part matching in URLs */
#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));
-/* Keys for csp->content_type */
+/* Bits for csp->content_type */
#define CT_TEXT 1 /* Suitable for pcrs filtering */
#define CT_GIF 2 /* Suitable for GIF filtering */
-#define CT_TABOO 3 /* DONT filter */
+#define CT_TABOO 4 /* DONT filter */
#define ACTION_MASK_ALL (~0U)
#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_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_MULTI_ADD_HEADER 0
#define ACTION_MULTI_WAFER 1
-#define ACTION_MULTI_COUNT 2
+#define ACTION_MULTI_FILTER 2
+#define ACTION_MULTI_COUNT 3
+
/*
* This structure contains a list of actions to apply to a URL.
struct current_action_spec action[1];
/* socket to talk to client (web browser) */
- int cfd;
+ jb_socket cfd;
/* socket to talk to server (web server or proxy) */
- int sfd;
+ jb_socket sfd;
/* Multi-purpose flag container, see CSP_FLAG_* above */
unsigned short int flags;
};
+/*
+ * 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;
- char len;
- char *(*parser)(const struct parsers *, const char *, struct client_state *);
+ char *str;
+ size_t len;
+ parser_func_ptr parser;
};
#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 *username;
- char *filtername;
- struct list patterns[1];
- pcrs_job *joblist;
+ char *filtername; /* Name from FILTER: statement in re_filterfile (or "default") */
+ 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
/*
* Port and IP to bind to.
- * Defaults to HADDR_DEFAULT:HADDR_PORT == 127.0.0.1:8000
+ * Defaults to HADDR_DEFAULT:HADDR_PORT == 127.0.0.1:8118
*/
const char *haddr;
int hport;
#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="
-#define CGI_PREFIX_HOST "i.j.b"
+#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[] =