X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/blobdiff_plain/055817455466c8eb60392f30bb7c689763962e17..a84abdae2e07242f4b6e80f172ce1c49be60aa2a:/portfwd.c diff --git a/portfwd.c b/portfwd.c index 1239f671..e7e9d638 100644 --- a/portfwd.c +++ b/portfwd.c @@ -1,3 +1,7 @@ +/* + * SSH port forwarding. + */ + #include #include @@ -11,46 +15,6 @@ #define TRUE 1 #endif -#define GET_32BIT_LSB_FIRST(cp) \ - (((unsigned long)(unsigned char)(cp)[0]) | \ - ((unsigned long)(unsigned char)(cp)[1] << 8) | \ - ((unsigned long)(unsigned char)(cp)[2] << 16) | \ - ((unsigned long)(unsigned char)(cp)[3] << 24)) - -#define PUT_32BIT_LSB_FIRST(cp, value) ( \ - (cp)[0] = (value), \ - (cp)[1] = (value) >> 8, \ - (cp)[2] = (value) >> 16, \ - (cp)[3] = (value) >> 24 ) - -#define GET_16BIT_LSB_FIRST(cp) \ - (((unsigned long)(unsigned char)(cp)[0]) | \ - ((unsigned long)(unsigned char)(cp)[1] << 8)) - -#define PUT_16BIT_LSB_FIRST(cp, value) ( \ - (cp)[0] = (value), \ - (cp)[1] = (value) >> 8 ) - -#define GET_32BIT_MSB_FIRST(cp) \ - (((unsigned long)(unsigned char)(cp)[0] << 24) | \ - ((unsigned long)(unsigned char)(cp)[1] << 16) | \ - ((unsigned long)(unsigned char)(cp)[2] << 8) | \ - ((unsigned long)(unsigned char)(cp)[3])) - -#define PUT_32BIT_MSB_FIRST(cp, value) ( \ - (cp)[0] = (value) >> 24, \ - (cp)[1] = (value) >> 16, \ - (cp)[2] = (value) >> 8, \ - (cp)[3] = (value) ) - -#define GET_16BIT_MSB_FIRST(cp) \ - (((unsigned long)(unsigned char)(cp)[0] << 8) | \ - ((unsigned long)(unsigned char)(cp)[1])) - -#define PUT_16BIT_MSB_FIRST(cp, value) ( \ - (cp)[0] = (value) >> 8, \ - (cp)[1] = (value) ) - struct PFwdPrivate { const struct plug_function_table *fn; /* the above variable absolutely *must* be the first in this structure */ @@ -86,6 +50,12 @@ struct PFwdPrivate { int buflen; }; +static void pfd_log(Plug plug, int type, SockAddr addr, int port, + const char *error_msg, int error_code) +{ + /* we have to dump these since we have no interface to logging.c */ +} + static int pfd_closing(Plug plug, const char *error_msg, int error_code, int calling_back) { @@ -308,6 +278,12 @@ static int pfd_receive(Plug plug, int urgent, char *data, int len) */ connect: + /* + * Freeze the socket until the SSH server confirms the + * connection. + */ + sk_set_frozen(pr->s, 1); + pr->c = new_sock_channel(pr->backhandle, pr->s); if (pr->c == NULL) { pfd_close(pr->s); @@ -319,11 +295,6 @@ static int pfd_receive(Plug plug, int urgent, char *data, int len) pr->dynamic = 0; /* - * Now freeze the socket until the SSH server confirms the - * connection. - */ - sk_set_frozen(pr->s, 1); - /* * If there's any data remaining in our current buffer, * save it to be sent on pfd_confirm(). */ @@ -354,9 +325,10 @@ static void pfd_sent(Plug plug, int bufsize) * Called when receiving a PORT OPEN from the server */ const char *pfd_newconnect(Socket *s, char *hostname, int port, - void *c, const Config *cfg, int addressfamily) + void *c, Conf *conf, int addressfamily) { static const struct plug_function_table fn_table = { + pfd_log, pfd_closing, pfd_receive, pfd_sent, @@ -371,7 +343,7 @@ const char *pfd_newconnect(Socket *s, char *hostname, int port, /* * Try to find host. */ - addr = name_lookup(hostname, port, &dummy_realhost, cfg, addressfamily); + addr = name_lookup(hostname, port, &dummy_realhost, conf, addressfamily); if ((err = sk_addr_error(addr)) != NULL) { sk_addr_free(addr); return err; @@ -390,7 +362,7 @@ const char *pfd_newconnect(Socket *s, char *hostname, int port, pr->dynamic = 0; pr->s = *s = new_connection(addr, dummy_realhost, port, - 0, 1, 0, 0, (Plug) pr, cfg); + 0, 1, 0, 0, (Plug) pr, conf); if ((err = sk_socket_error(*s)) != NULL) { sfree(pr); return err; @@ -407,6 +379,7 @@ const char *pfd_newconnect(Socket *s, char *hostname, int port, static int pfd_accepting(Plug p, OSSocket sock) { static const struct plug_function_table fn_table = { + pfd_log, pfd_closing, pfd_receive, pfd_sent, @@ -462,10 +435,11 @@ static int pfd_accepting(Plug p, OSSocket sock) sets up a listener on the local machine on (srcaddr:)port */ const char *pfd_addforward(char *desthost, int destport, char *srcaddr, - int port, void *backhandle, const Config *cfg, + int port, void *backhandle, Conf *conf, void **sockdata, int address_family) { static const struct plug_function_table fn_table = { + pfd_log, pfd_closing, pfd_receive, /* should not happen... */ pfd_sent, /* also should not happen */ @@ -494,7 +468,8 @@ const char *pfd_addforward(char *desthost, int destport, char *srcaddr, pr->backhandle = backhandle; pr->s = s = new_listener(srcaddr, port, (Plug) pr, - !cfg->lport_acceptall, cfg, address_family); + !conf_get_int(conf, CONF_lport_acceptall), + conf, address_family); if ((err = sk_socket_error(s)) != NULL) { sfree(pr); return err;