--- include/tcpd.h.orig 2016-06-15 10:03:22 UTC
+++ include/tcpd.h
@@ -0,0 +1,235 @@
+ /*
+ * @(#) tcpd.h 1.5 96/03/19 16:22:24
+ *
+ * Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
+ */
+
+/*
+ * This version of the file has been hacked over by
+ * Kern Sibbald to make it compatible with C++ for
+ * the few functions that Bacula uses. 19 April 2002
+ * It now compiles with C++ but remains untested.
+ * A correct fix would require significantly more work.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Structure to describe one communications endpoint. */
+
+#define STRING_LENGTH 128 /* hosts, users, processes */
+
+struct host_info {
+ char name[STRING_LENGTH]; /* access via eval_hostname(host) */
+ char addr[STRING_LENGTH]; /* access via eval_hostaddr(host) */
+ struct sockaddr_in *sin; /* socket address or 0 */
+ struct t_unitdata *unit; /* TLI transport address or 0 */
+ struct request_info *request; /* for shared information */
+};
+
+/* Structure to describe what we know about a service request. */
+
+struct request_info {
+ int fd; /* socket handle */
+ char user[STRING_LENGTH]; /* access via eval_user(request) */
+ char daemon[STRING_LENGTH]; /* access via eval_daemon(request) */
+ char pid[10]; /* access via eval_pid(request) */
+ struct host_info client[1]; /* client endpoint info */
+ struct host_info server[1]; /* server endpoint info */
+ void (*sink) (void); /* datagram sink function or 0 */
+ void (*hostname) (void); /* address to printable hostname */
+ void (*hostaddr) (void); /* address to printable address */
+ void (*cleanup) (void); /* cleanup function or 0 */
+ struct netconfig *config; /* netdir handle */
+};
+
+/* Common string operations. Less clutter should be more readable. */
+
+#define STRN_CPY(d,s,l) { strncpy((d),(s),(l)); (d)[(l)-1] = 0; }
+
+#define STRN_EQ(x,y,l) (strncasecmp((x),(y),(l)) == 0)
+#define STRN_NE(x,y,l) (strncasecmp((x),(y),(l)) != 0)
+#define STR_EQ(x,y) (strcasecmp((x),(y)) == 0)
+#define STR_NE(x,y) (strcasecmp((x),(y)) != 0)
+
+ /*
+ * Initially, all above strings have the empty value. Information that
+ * cannot be determined at runtime is set to "unknown", so that we can
+ * distinguish between `unavailable' and `not yet looked up'. A hostname
+ * that we do not believe in is set to "paranoid".
+ */
+
+#define STRING_UNKNOWN "unknown" /* lookup failed */
+#define STRING_PARANOID "paranoid" /* hostname conflict */
+
+extern char unknown[];
+extern char paranoid[];
+
+#define HOSTNAME_KNOWN(s) (STR_NE((s),unknown) && STR_NE((s),paranoid))
+
+#define NOT_INADDR(s) (s[strspn(s,"01234567890./")] != 0)
+
+/* Global functions. */
+
+#if defined(TLI) || defined(PTX) || defined(TLI_SEQUENT)
+extern void fromhost(); /* get/validate client host info */
+#else
+#define fromhost sock_host /* no TLI support needed */
+#endif
+
+extern int hosts_access(struct request_info *); /* access control */
+extern void shell_cmd(void); /* execute shell command */
+extern char *percent_x(void); /* do %<char> expansion */
+extern void rfc931(void); /* client name from RFC 931 daemon */
+extern void clean_exit(void); /* clean up and exit */
+extern void refuse(void); /* clean up and exit */
+extern char *xgets(void); /* fgets() on steroids */
+extern char *split_at(void); /* strchr() and split */
+extern unsigned long dot_quad_addr(void); /* restricted inet_addr() */
+
+/* Global variables. */
+
+extern int allow_severity; /* for connection logging */
+extern int deny_severity; /* for connection logging */
+extern char *hosts_allow_table; /* for verification mode redirection */
+extern char *hosts_deny_table; /* for verification mode redirection */
+extern int hosts_access_verbose; /* for verbose matching mode */
+extern int rfc931_timeout; /* user lookup timeout */
+extern int resident; /* > 0 if resident process */
+
+ /*
+ * Routines for controlled initialization and update of request structure
+ * attributes. Each attribute has its own key.
+ */
+
+#ifdef __STDC__
+extern struct request_info *request_init(struct request_info *,...);
+extern struct request_info *request_set(struct request_info *,...);
+#else
+extern struct request_info *request_init(); /* initialize request */
+extern struct request_info *request_set(); /* update request structure */
+#endif
+
+#define RQ_FILE 1 /* file descriptor */
+#define RQ_DAEMON 2 /* server process (argv[0]) */
+#define RQ_USER 3 /* client user name */
+#define RQ_CLIENT_NAME 4 /* client host name */
+#define RQ_CLIENT_ADDR 5 /* client host address */
+#define RQ_CLIENT_SIN 6 /* client endpoint (internal) */
+#define RQ_SERVER_NAME 7 /* server host name */
+#define RQ_SERVER_ADDR 8 /* server host address */
+#define RQ_SERVER_SIN 9 /* server endpoint (internal) */
+
+ /*
+ * Routines for delayed evaluation of request attributes. Each attribute
+ * type has its own access method. The trivial ones are implemented by
+ * macros. The other ones are wrappers around the transport-specific host
+ * name, address, and client user lookup methods. The request_info and
+ * host_info structures serve as caches for the lookup results.
+ */
+
+extern char *eval_user(void); /* client user */
+extern char *eval_hostname(void); /* printable hostname */
+extern char *eval_hostaddr(void); /* printable host address */
+extern char *eval_hostinfo(void); /* host name or address */
+extern char *eval_client(struct request_info *); /* whatever is available */
+extern char *eval_server(void); /* whatever is available */
+#define eval_daemon(r) ((r)->daemon) /* daemon process name */
+#define eval_pid(r) ((r)->pid) /* process id */
+
+/* Socket-specific methods, including DNS hostname lookups. */
+
+extern void sock_host(struct request_info *);
+extern void sock_hostname(void); /* translate address to hostname */
+extern void sock_hostaddr(void); /* address to printable address */
+#define sock_methods(r) \
+ { (r)->hostname = sock_hostname; (r)->hostaddr = sock_hostaddr; }
+
+/* The System V Transport-Level Interface (TLI) interface. */
+
+#if defined(TLI) || defined(PTX) || defined(TLI_SEQUENT)
+extern void tli_host(); /* look up endpoint addresses etc. */
+#endif
+
+ /*
+ * Problem reporting interface. Additional file/line context is reported
+ * when available. The jump buffer (tcpd_buf) is not declared here, or
+ * everyone would have to include <setjmp.h>.
+ */
+
+#ifdef __STDC__
+extern void tcpd_warn(char *, ...); /* report problem and proceed */
+extern void tcpd_jump(char *, ...); /* report problem and jump */
+#else
+extern void tcpd_warn();
+extern void tcpd_jump();
+#endif
+
+struct tcpd_context {
+ char *file; /* current file */
+ int line; /* current line */
+};
+extern struct tcpd_context tcpd_context;
+
+ /*
+ * While processing access control rules, error conditions are handled by
+ * jumping back into the hosts_access() routine. This is cleaner than
+ * checking the return value of each and every silly little function. The
+ * (-1) returns are here because zero is already taken by longjmp().
+ */
+
+#define AC_PERMIT 1 /* permit access */
+#define AC_DENY (-1) /* deny_access */
+#define AC_ERROR AC_DENY /* XXX */
+
+ /*
+ * In verification mode an option function should just say what it would do,
+ * instead of really doing it. An option function that would not return
+ * should clear the dry_run flag to inform the caller of this unusual
+ * behavior.
+ */
+
+extern void process_options(void); /* execute options */
+extern int dry_run; /* verification flag */
+
+/* Bug workarounds. */
+
+#ifdef INET_ADDR_BUG /* inet_addr() returns struct */
+#define inet_addr fix_inet_addr
+extern long fix_inet_addr(void);
+#endif
+
+#ifdef BROKEN_FGETS /* partial reads from sockets */
+#define fgets fix_fgets
+extern char *fix_fgets(void);
+#endif
+
+#ifdef RECVFROM_BUG /* no address family info */
+#define recvfrom fix_recvfrom
+extern int fix_recvfrom(void);
+#endif
+
+#ifdef GETPEERNAME_BUG /* claims success with UDP */
+#define getpeername fix_getpeername
+extern int fix_getpeername(void);
+#endif
+
+#ifdef SOLARIS_24_GETHOSTBYNAME_BUG /* lists addresses as aliases */
+#define gethostbyname fix_gethostbyname
+extern struct hostent *fix_gethostbyname(void);
+#endif
+
+#ifdef USE_STRSEP /* libc calls strtok(void) */
+#define strtok fix_strtok
+extern char *fix_strtok(void);
+#endif
+
+#ifdef LIBC_CALLS_STRTOK /* libc calls strtok() */
+#define strtok my_strtok
+extern char *my_strtok(void);
+#endif
+
+#ifdef __cplusplus
+}
+#endif