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authormarha <marha@users.sourceforge.net>2010-11-19 10:48:58 +0000
committermarha <marha@users.sourceforge.net>2010-11-19 10:48:58 +0000
commit8fd6c61557d06a2434cf0e296df38f218ba2c186 (patch)
tree61e9672dfeacac466952ef9fc7b38ef21426b136 /tools/plink/network.h
parent20a8b976130e3b2cfff5c3364169e61ec10291f3 (diff)
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Remove tools again. Should have done it with svn merge --reintegrate
Diffstat (limited to 'tools/plink/network.h')
-rw-r--r--tools/plink/network.h247
1 files changed, 0 insertions, 247 deletions
diff --git a/tools/plink/network.h b/tools/plink/network.h
deleted file mode 100644
index b1b559047..000000000
--- a/tools/plink/network.h
+++ /dev/null
@@ -1,247 +0,0 @@
-/*
- * Networking abstraction in PuTTY.
- *
- * The way this works is: a back end can choose to open any number
- * of sockets - including zero, which might be necessary in some.
- * It can register a bunch of callbacks (most notably for when
- * data is received) for each socket, and it can call the networking
- * abstraction to send data without having to worry about blocking.
- * The stuff behind the abstraction takes care of selects and
- * nonblocking writes and all that sort of painful gubbins.
- */
-
-#ifndef PUTTY_NETWORK_H
-#define PUTTY_NETWORK_H
-
-#ifndef DONE_TYPEDEFS
-#define DONE_TYPEDEFS
-typedef struct config_tag Config;
-typedef struct backend_tag Backend;
-typedef struct terminal_tag Terminal;
-#endif
-
-typedef struct SockAddr_tag *SockAddr;
-/* pay attention to levels of indirection */
-typedef struct socket_function_table **Socket;
-typedef struct plug_function_table **Plug;
-
-#ifndef OSSOCKET_DEFINED
-typedef void *OSSocket;
-#endif
-
-struct socket_function_table {
- Plug(*plug) (Socket s, Plug p);
- /* use a different plug (return the old one) */
- /* if p is NULL, it doesn't change the plug */
- /* but it does return the one it's using */
- void (*close) (Socket s);
- int (*write) (Socket s, const char *data, int len);
- int (*write_oob) (Socket s, const char *data, int len);
- void (*flush) (Socket s);
- void (*set_private_ptr) (Socket s, void *ptr);
- void *(*get_private_ptr) (Socket s);
- void (*set_frozen) (Socket s, int is_frozen);
- /* ignored by tcp, but vital for ssl */
- const char *(*socket_error) (Socket s);
-};
-
-struct plug_function_table {
- void (*log)(Plug p, int type, SockAddr addr, int port,
- const char *error_msg, int error_code);
- /*
- * Passes the client progress reports on the process of setting
- * up the connection.
- *
- * - type==0 means we are about to try to connect to address
- * `addr' (error_msg and error_code are ignored)
- * - type==1 means we have failed to connect to address `addr'
- * (error_msg and error_code are supplied). This is not a
- * fatal error - we may well have other candidate addresses
- * to fall back to. When it _is_ fatal, the closing()
- * function will be called.
- */
- int (*closing)
- (Plug p, const char *error_msg, int error_code, int calling_back);
- /* error_msg is NULL iff it is not an error (ie it closed normally) */
- /* calling_back != 0 iff there is a Plug function */
- /* currently running (would cure the fixme in try_send()) */
- int (*receive) (Plug p, int urgent, char *data, int len);
- /*
- * - urgent==0. `data' points to `len' bytes of perfectly
- * ordinary data.
- *
- * - urgent==1. `data' points to `len' bytes of data,
- * which were read from before an Urgent pointer.
- *
- * - urgent==2. `data' points to `len' bytes of data,
- * the first of which was the one at the Urgent mark.
- */
- void (*sent) (Plug p, int bufsize);
- /*
- * The `sent' function is called when the pending send backlog
- * on a socket is cleared or partially cleared. The new backlog
- * size is passed in the `bufsize' parameter.
- */
- int (*accepting)(Plug p, OSSocket sock);
- /*
- * returns 0 if the host at address addr is a valid host for connecting or error
- */
-};
-
-/* proxy indirection layer */
-/* NB, control of 'addr' is passed via new_connection, which takes
- * responsibility for freeing it */
-Socket new_connection(SockAddr addr, char *hostname,
- int port, int privport,
- int oobinline, int nodelay, int keepalive,
- Plug plug, const Config *cfg);
-Socket new_listener(char *srcaddr, int port, Plug plug, int local_host_only,
- const Config *cfg, int addressfamily);
-SockAddr name_lookup(char *host, int port, char **canonicalname,
- const Config *cfg, int addressfamily);
-
-/* platform-dependent callback from new_connection() */
-/* (same caveat about addr as new_connection()) */
-Socket platform_new_connection(SockAddr addr, char *hostname,
- int port, int privport,
- int oobinline, int nodelay, int keepalive,
- Plug plug, const Config *cfg);
-
-/* socket functions */
-
-void sk_init(void); /* called once at program startup */
-void sk_cleanup(void); /* called just before program exit */
-
-SockAddr sk_namelookup(const char *host, char **canonicalname, int address_family);
-SockAddr sk_nonamelookup(const char *host);
-void sk_getaddr(SockAddr addr, char *buf, int buflen);
-int sk_hostname_is_local(char *name);
-int sk_address_is_local(SockAddr addr);
-int sk_addrtype(SockAddr addr);
-void sk_addrcopy(SockAddr addr, char *buf);
-void sk_addr_free(SockAddr addr);
-/* sk_addr_dup generates another SockAddr which contains the same data
- * as the original one and can be freed independently. May not actually
- * physically _duplicate_ it: incrementing a reference count so that
- * one more free is required before it disappears is an acceptable
- * implementation. */
-SockAddr sk_addr_dup(SockAddr addr);
-
-/* NB, control of 'addr' is passed via sk_new, which takes responsibility
- * for freeing it, as for new_connection() */
-Socket sk_new(SockAddr addr, int port, int privport, int oobinline,
- int nodelay, int keepalive, Plug p);
-
-Socket sk_newlistener(char *srcaddr, int port, Plug plug, int local_host_only, int address_family);
-
-Socket sk_register(OSSocket sock, Plug plug);
-
-#define sk_plug(s,p) (((*s)->plug) (s, p))
-#define sk_close(s) (((*s)->close) (s))
-#define sk_write(s,buf,len) (((*s)->write) (s, buf, len))
-#define sk_write_oob(s,buf,len) (((*s)->write_oob) (s, buf, len))
-#define sk_flush(s) (((*s)->flush) (s))
-
-#ifdef DEFINE_PLUG_METHOD_MACROS
-#define plug_log(p,type,addr,port,msg,code) (((*p)->log) (p, type, addr, port, msg, code))
-#define plug_closing(p,msg,code,callback) (((*p)->closing) (p, msg, code, callback))
-#define plug_receive(p,urgent,buf,len) (((*p)->receive) (p, urgent, buf, len))
-#define plug_sent(p,bufsize) (((*p)->sent) (p, bufsize))
-#define plug_accepting(p, sock) (((*p)->accepting)(p, sock))
-#endif
-
-/*
- * Each socket abstraction contains a `void *' private field in
- * which the client can keep state.
- *
- * This is perhaps unnecessary now that we have the notion of a plug,
- * but there is some existing code that uses it, so it stays.
- */
-#define sk_set_private_ptr(s, ptr) (((*s)->set_private_ptr) (s, ptr))
-#define sk_get_private_ptr(s) (((*s)->get_private_ptr) (s))
-
-/*
- * Special error values are returned from sk_namelookup and sk_new
- * if there's a problem. These functions extract an error message,
- * or return NULL if there's no problem.
- */
-const char *sk_addr_error(SockAddr addr);
-#define sk_socket_error(s) (((*s)->socket_error) (s))
-
-/*
- * Set the `frozen' flag on a socket. A frozen socket is one in
- * which all READABLE notifications are ignored, so that data is
- * not accepted from the peer until the socket is unfrozen. This
- * exists for two purposes:
- *
- * - Port forwarding: when a local listening port receives a
- * connection, we do not want to receive data from the new
- * socket until we have somewhere to send it. Hence, we freeze
- * the socket until its associated SSH channel is ready; then we
- * unfreeze it and pending data is delivered.
- *
- * - Socket buffering: if an SSH channel (or the whole connection)
- * backs up or presents a zero window, we must freeze the
- * associated local socket in order to avoid unbounded buffer
- * growth.
- */
-#define sk_set_frozen(s, is_frozen) (((*s)->set_frozen) (s, is_frozen))
-
-/*
- * Call this after an operation that might have tried to send on a
- * socket, to clean up any pending network errors.
- */
-void net_pending_errors(void);
-
-/*
- * Simple wrapper on getservbyname(), needed by ssh.c. Returns the
- * port number, in host byte order (suitable for printf and so on).
- * Returns 0 on failure. Any platform not supporting getservbyname
- * can just return 0 - this function is not required to handle
- * numeric port specifications.
- */
-int net_service_lookup(char *service);
-
-/*
- * Look up the local hostname; return value needs freeing.
- * May return NULL.
- */
-char *get_hostname(void);
-
-/********** SSL stuff **********/
-
-/*
- * This section is subject to change, but you get the general idea
- * of what it will eventually look like.
- */
-
-typedef struct certificate *Certificate;
-typedef struct our_certificate *Our_Certificate;
- /* to be defined somewhere else, somehow */
-
-typedef struct ssl_client_socket_function_table **SSL_Client_Socket;
-typedef struct ssl_client_plug_function_table **SSL_Client_Plug;
-
-struct ssl_client_socket_function_table {
- struct socket_function_table base;
- void (*renegotiate) (SSL_Client_Socket s);
- /* renegotiate the cipher spec */
-};
-
-struct ssl_client_plug_function_table {
- struct plug_function_table base;
- int (*refuse_cert) (SSL_Client_Plug p, Certificate cert[]);
- /* do we accept this certificate chain? If not, why not? */
- /* cert[0] is the server's certificate, cert[] is NULL-terminated */
- /* the last certificate may or may not be the root certificate */
- Our_Certificate(*client_cert) (SSL_Client_Plug p);
- /* the server wants us to identify ourselves */
- /* may return NULL if we want anonymity */
-};
-
-SSL_Client_Socket sk_ssl_client_over(Socket s, /* pre-existing (tcp) connection */
- SSL_Client_Plug p);
-
-#define sk_renegotiate(s) (((*s)->renegotiate) (s))
-
-#endif