2 * Copyright (c) 1997 Adrian Sun (asun@zoology.washington.edu)
10 #include <sys/types.h>
14 #include <netinet/in.h>
15 #include <atalk/afp.h>
16 #include <atalk/server_child.h>
17 #include <netatalk/endian.h>
19 /* What a DSI packet looks like:
21 |-------------------------------|
22 |flags |command| requestID |
23 |-------------------------------|
24 |error code/enclosed data offset|
25 |-------------------------------|
27 |-------------------------------|
29 |-------------------------------|
31 CONVENTION: anything with a dsi_ prefix is kept in network byte order.
34 /* these need to be kept in sync w/ AFPTRANS_* in <atalk/afp.h>.
35 * convention: AFPTRANS_* = (1 << DSI_*) */
42 #define DSI_BLOCKSIZ 16
44 u_int8_t dsi_flags; /* packet type: request or reply */
45 u_int8_t dsi_command; /* command */
46 u_int16_t dsi_requestID; /* request ID */
47 u_int32_t dsi_code; /* error code or data offset */
48 u_int32_t dsi_len; /* total data length */
49 u_int32_t dsi_reserved; /* reserved field */
52 #define DSI_CMDSIZ 800
53 #define DSI_DATASIZ 8192
54 /* child and parent processes might interpret a couple of these
58 struct dsi_block header;
59 struct sockaddr_in server, client;
61 struct itimerval timer, savetimer;
62 u_int32_t attn_quantum, datasize, server_quantum;
63 u_int16_t serverID, clientID;
64 u_int8_t *status, commands[DSI_CMDSIZ], data[DSI_DATASIZ];
66 unsigned int datalen, cmdlen;
67 size_t read_count, write_count;
68 int asleep; /* client won't reply AFP 0x7a ? */
69 /* inited = initialized?, child = a child?, noreply = send reply? */
70 char child, inited, noreply;
72 int socket, serversock;
74 /* protocol specific open/close, send/receive
75 * send/receive fill in the header and use dsi->commands.
76 * write/read just write/read data */
77 pid_t (*proto_open)(struct DSI *);
78 void (*proto_close)(struct DSI *);
82 #define DSIFL_REQUEST 0x00
83 #define DSIFL_REPLY 0x01
84 #define DSIFL_MAX 0x01
86 /* DSI session options */
87 #define DSIOPT_SERVQUANT 0x00 /* server request quantum */
88 #define DSIOPT_ATTNQUANT 0x01 /* attention quantum */
91 #define DSIFUNC_CLOSE 1 /* DSICloseSession */
92 #define DSIFUNC_CMD 2 /* DSICommand */
93 #define DSIFUNC_STAT 3 /* DSIGetStatus */
94 #define DSIFUNC_OPEN 4 /* DSIOpenSession */
95 #define DSIFUNC_TICKLE 5 /* DSITickle */
96 #define DSIFUNC_WRITE 6 /* DSIWrite */
97 #define DSIFUNC_ATTN 8 /* DSIAttention */
98 #define DSIFUNC_MAX 8 /* largest command */
100 /* DSI Error codes: most of these aren't used. */
101 #define DSIERR_OK 0x0000
102 #define DSIERR_BADVERS 0xfbd6
103 #define DSIERR_BUFSMALL 0xfbd5
104 #define DSIERR_NOSESS 0xfbd4
105 #define DSIERR_NOSERV 0xfbd3
106 #define DSIERR_PARM 0xfbd2
107 #define DSIERR_SERVBUSY 0xfbd1
108 #define DSIERR_SESSCLOS 0xfbd0
109 #define DSIERR_SIZERR 0xfbcf
110 #define DSIERR_TOOMANY 0xfbce
111 #define DSIERR_NOACK 0xfbcd
113 /* server and client quanta */
114 #define DSI_DEFQUANT 2 /* default attention quantum size */
115 #define DSI_SERVQUANT_MAX 0xffffffffL /* server quantum */
116 #define DSI_SERVQUANT_MIN 0x0004A2E0L /* minimum server quantum */
117 #define DSI_SERVQUANT_DEF DSI_SERVQUANT_MIN /* default server quantum */
119 /* default port number */
120 #define DSI_AFPOVERTCP_PORT 548
122 /* basic initialization: dsi_init.c */
123 extern DSI *dsi_init __P((const dsi_proto /*protocol*/,
124 const char * /*program*/,
125 const char * /*host*/, const char * /*address*/,
126 const int /*port*/, const int /*proxy*/,
127 const u_int32_t /* server quantum */));
128 extern void dsi_setstatus __P((DSI *, u_int8_t *, const int));
130 /* in dsi_getsess.c */
131 extern DSI *dsi_getsession __P((DSI *, server_child *, const int));
132 extern void dsi_kill __P((int));
135 /* DSI Commands: individual files */
136 extern void dsi_opensession __P((DSI *));
137 extern int dsi_attention __P((DSI *, AFPUserBytes));
138 extern int dsi_cmdreply __P((DSI *, const int));
139 extern int dsi_tickle __P((DSI *));
140 extern void dsi_getstatus __P((DSI *));
141 extern void dsi_close __P((DSI *));
142 extern void dsi_sleep __P((DSI *, const int ));
144 /* low-level stream commands -- in dsi_stream.c */
145 extern size_t dsi_stream_write __P((DSI *, void *, const size_t));
146 extern size_t dsi_stream_read __P((DSI *, void *, const size_t));
147 extern int dsi_stream_send __P((DSI *, void *, size_t));
148 extern int dsi_stream_receive __P((DSI *, void *, const size_t, size_t *));
150 /* client writes -- dsi_write.c */
151 extern size_t dsi_writeinit __P((DSI *, void *, const size_t));
152 extern size_t dsi_write __P((DSI *, void *, const size_t));
153 extern void dsi_writeflush __P((DSI *));
154 #define dsi_wrtreply(a,b) dsi_cmdreply(a,b)
156 /* client reads -- dsi_read.c */
157 extern ssize_t dsi_readinit __P((DSI *, void *, const size_t, const size_t,
159 extern ssize_t dsi_read __P((DSI *, void *, const size_t));
160 extern void dsi_readdone __P((DSI *));
162 /* some useful macros */
163 #define dsi_serverID(x) ((x)->serverID++)
164 #define dsi_send(x) do { \
165 (x)->header.dsi_len = htonl((x)->cmdlen); \
166 dsi_stream_send((x), (x)->commands, (x)->cmdlen); \
168 #define dsi_receive(x) (dsi_stream_receive((x), (x)->commands, \
169 DSI_CMDSIZ, &(x)->cmdlen))
170 #endif /* atalk/dsi.h */