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Initial import of Owen's OpenTransport interface. It doesn't work yet, but
it does compile and link. [originally from svn r2547]
This commit is contained in:
Ben Harris
435
mac/otnet.c
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435
mac/otnet.c
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@ -0,0 +1,435 @@
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/*
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* Macintosh OpenTransport networking abstraction
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*/
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#include <OpenTransport.h>
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#include <OpenTptInternet.h>
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#define DEFINE_PLUG_METHOD_MACROS
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#include "putty.h"
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#include "network.h"
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#include "mac.h"
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struct Socket_tag {
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struct socket_function_table *fn;
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/* other stuff... */
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char *error;
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EndpointRef ep;
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Plug plug;
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void *private_ptr;
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bufchain output_data;
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int connected;
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int writable;
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int frozen; /* this causes readability notifications to be ignored */
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int frozen_readable; /* this means we missed at least one readability
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* notification while we were frozen */
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int localhost_only; /* for listening sockets */
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char oobdata[1];
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int sending_oob;
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int oobpending; /* is there OOB data available to read?*/
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int oobinline;
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int pending_error; /* in case send() returns error */
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int listener;
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struct Socket_tag *next;
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struct Socket_tag **prev;
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};
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typedef struct Socket_tag *Actual_Socket;
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struct SockAddr_tag {
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char *error;
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DNSAddress address;
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};
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/* Globals */
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static struct {
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Actual_Socket socklist;
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} ot;
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OSErr ot_init(void)
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{
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return InitOpenTransport();
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}
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void ot_cleanup(void)
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{
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Actual_Socket s;
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for (s = ot.socklist; s !=NULL; s = s->next) {
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OTUnbind(s->ep);
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OTCloseProvider(s->ep);
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}
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CloseOpenTransport();
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}
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static char *error_string(int error)
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{
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return "An error...";
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}
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SockAddr ot_namelookup(char *host, char **canonicalname)
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{
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SockAddr ret = smalloc(sizeof(struct SockAddr_tag));
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OTInitDNSAddress(&(ret->address), host);
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/* for now we'll pretend canonicalname is always just host */
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*canonicalname = smalloc(1+strlen(host));
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strcpy(*canonicalname, host);
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return ret;
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}
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SockAddr ot_nonamelookup(char *host)
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{
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SockAddr ret = smalloc(sizeof(struct SockAddr_tag));
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OTInitDNSAddress(&(ret->address), host);
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return ret;
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}
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void ot_getaddr(SockAddr addr, char *buf, int buflen)
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{
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strncpy(buf, (addr->address).fName, buflen);
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}
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/* I think "local" here really means "loopback" */
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int ot_hostname_is_local(char *name)
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{
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return !strcmp(name, "localhost");
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}
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int ot_address_is_local(SockAddr addr)
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{
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/* FIXME */
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return FALSE;
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}
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int ot_addrtype(SockAddr addr)
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{
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return ADDRTYPE_IPV4;
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}
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void ot_addrcopy(SockAddr addr, char *buf)
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{
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}
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void ot_addr_free(SockAddr addr)
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{
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sfree(addr);
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}
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static Plug ot_tcp_plug(Socket sock, Plug p)
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{
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Actual_Socket s = (Actual_Socket) sock;
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Plug ret = s->plug;
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if (p)
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s->plug = p;
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return ret;
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}
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static void ot_tcp_flush(Socket s)
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{
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/*
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* We send data to the socket as soon as we can anyway,
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* so we don't need to do anything here. :-)
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*/
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}
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static void ot_tcp_close(Socket s);
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static int ot_tcp_write(Socket s, char const *data, int len);
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static int ot_tcp_write_oob(Socket s, char const *data, int len);
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static void ot_tcp_set_private_ptr(Socket s, void *ptr);
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static void *ot_tcp_get_private_ptr(Socket s);
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static void ot_tcp_set_frozen(Socket s, int is_frozen);
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static char *ot_tcp_socket_error(Socket s);
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static void ot_recv(Actual_Socket s);
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void ot_poll(void);
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Socket ot_register(void *sock, Plug plug)
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{
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static struct socket_function_table fn_table = {
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ot_tcp_plug,
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ot_tcp_close,
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ot_tcp_write,
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ot_tcp_write_oob,
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ot_tcp_flush,
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ot_tcp_set_private_ptr,
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ot_tcp_get_private_ptr,
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ot_tcp_set_frozen,
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ot_tcp_socket_error
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};
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Actual_Socket ret;
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ret = smalloc(sizeof(struct Socket_tag));
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ret->fn = &fn_table;
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ret->error = NULL;
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ret->plug = plug;
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bufchain_init(&ret->output_data);
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ret->writable = 1; /* to start with */
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ret->sending_oob = 0;
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ret->frozen = 1;
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ret->frozen_readable = 0;
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ret->localhost_only = 0; /* unused, but best init anyway */
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ret->pending_error = 0;
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ret->oobpending = FALSE;
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ret->listener = 0;
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ret->ep = (EndpointRef)sock;
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/* some sort of error checking */
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ret->oobinline = 0;
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/* Add this to the list of all sockets */
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ret->next = ot.socklist;
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ret->prev = &ot.socklist;
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ot.socklist = ret;
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return (Socket) ret;
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}
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Socket ot_new(SockAddr addr, int port, int privport, int oobinline,
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int nodelay, Plug plug)
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{
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static struct socket_function_table fn_table = {
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ot_tcp_plug,
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ot_tcp_close,
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ot_tcp_write,
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ot_tcp_write_oob,
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ot_tcp_flush,
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ot_tcp_set_private_ptr,
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ot_tcp_get_private_ptr,
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ot_tcp_set_frozen,
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ot_tcp_socket_error
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};
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Actual_Socket ret;
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EndpointRef ep;
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OSStatus err;
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TCall connectCall;
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ret = smalloc(sizeof(struct Socket_tag));
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ret->fn = &fn_table;
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ret->error = NULL;
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ret->plug = plug;
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bufchain_init(&ret->output_data);
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ret->connected = 0; /* to start with */
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ret->writable = 0; /* to start with */
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ret->sending_oob = 0;
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ret->frozen = 0;
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ret->frozen_readable = 0;
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ret->localhost_only = 0; /* unused, but best init anyway */
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ret->pending_error = 0;
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ret->oobinline = oobinline;
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ret->oobpending = FALSE;
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ret->listener = 0;
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/* Open Endpoint, configure it for TCP over anything */
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ep = OTOpenEndpoint(OTCreateConfiguration("tcp"), 0, NULL, &err);
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ret->ep = ep;
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if (err) {
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ret->error = error_string(err);
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return (Socket) ret;
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}
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/* TODO: oobinline, nodelay */
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/*
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* Bind to local address.
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*/
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/* FIXME: pay attention to privport */
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err = OTBind(ep, NULL, NULL); /* OpenTransport always picks our address */
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if (err) {
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ret->error = error_string(err);
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return (Socket) ret;
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}
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/*
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* Connect to remote address.
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*/
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/* FIXME: bolt the port onto the end */
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OTMemzero(&connectCall, sizeof(TCall));
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connectCall.addr.buf = (UInt8 *) &(addr->address);
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connectCall.addr.len = sizeof(DNSAddress);
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err = OTConnect(ep, &connectCall, nil);
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if (err) {
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ret->error = error_string(err);
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return (Socket) ret;
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} else {
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ret->connected = 1;
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ret->writable = 1;
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}
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/* Add this to the list of all sockets */
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ret->next = ot.socklist;
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ret->prev = &ot.socklist;
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ot.socklist = ret;
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return (Socket) ret;
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}
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Socket ot_newlistener(char *foobar, int port, Plug plug, int local_host_only)
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{
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Actual_Socket s;
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return (Socket) s;
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}
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static void ot_tcp_close(Socket sock)
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{
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Actual_Socket s = (Actual_Socket) sock;
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OTCloseProvider(s->ep);
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/* Unhitch from list of sockets */
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*s->prev = s->next;
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if (s->next != NULL)
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s->next->prev = s->prev;
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sfree(s);
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}
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static void try_send(Actual_Socket s)
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{
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while (bufchain_size(&s->output_data) > 0) {
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int nsent;
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void *data;
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int len;
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/* Don't care about oob right now */
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bufchain_prefix(&s->output_data, &data, &len);
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nsent = OTSnd(s->ep, data, len, 0);
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noise_ultralight(nsent);
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if (nsent <= 0) {
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/* something bad happened, hey ho */
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} else {
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/* still don't care about oob */
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bufchain_consume(&s->output_data, nsent);
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}
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}
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}
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static int ot_tcp_write(Socket sock, char const *buf, int len)
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{
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Actual_Socket s = (Actual_Socket) sock;
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bufchain_add(&s->output_data, buf, len);
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if (s->writable)
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try_send(s);
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return bufchain_size(&s->output_data);
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}
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static int ot_tcp_write_oob(Socket sock, char const *buf, int len)
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{
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/* Don't care about oob */
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return 0;
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}
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/*
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* Each socket abstraction contains a `void *' private field in
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* which the client can keep state.
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*/
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static void ot_tcp_set_private_ptr(Socket sock, void *ptr)
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{
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Actual_Socket s = (Actual_Socket) sock;
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s->private_ptr = ptr;
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}
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static void *ot_tcp_get_private_ptr(Socket sock)
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{
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Actual_Socket s = (Actual_Socket) sock;
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return s->private_ptr;
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}
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/*
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* Special error values are returned from ot_namelookup and ot_new
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* if there's a problem. These functions extract an error message,
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* or return NULL if there's no problem.
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*/
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char *ot_addr_error(SockAddr addr)
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{
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return addr->error;
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}
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static char *ot_tcp_socket_error(Socket sock)
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{
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Actual_Socket s = (Actual_Socket) sock;
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return s->error;
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}
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static void ot_tcp_set_frozen(Socket sock, int is_frozen)
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{
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Actual_Socket s = (Actual_Socket) sock;
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if (s->frozen == is_frozen)
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return;
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s->frozen = is_frozen;
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}
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/*
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* Poll all our sockets from an event loop
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*/
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void ot_poll(void)
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{
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Actual_Socket s;
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OTResult o;
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for (s = ot.socklist; s != NULL; s = s->next) {
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o = OTLook(s->ep);
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switch(o) {
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case T_DATA: /* Normal Data */
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ot_recv(s);
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break;
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case T_EXDATA: /* Expedited Data (urgent?) */
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ot_recv(s);
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break;
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}
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}
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}
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void ot_recv(Actual_Socket s)
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{
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OTResult o;
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char buf[20480];
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OTFlags flags;
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if (s->frozen) return;
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while ((o = OTRcv(s->ep, buf, sizeof(buf), &flags)) != kOTNoDataErr) {
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plug_receive(s->plug, 0, buf, sizeof(buf));
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}
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}
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/*
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* Local Variables:
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* c-file-style: "simon"
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* End:
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*/
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