1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/*
* vmhsbr.c -- routines to help vmh along
*
* This code is Copyright (c) 2002, by the authors of nmh. See the
* COPYRIGHT file in the root directory of the nmh distribution for
* complete copyright information.
*/
/*
* TODO (for vrsn 2):
* INI: include width of windows
*/
#include <h/mh.h>
#include <h/vmhsbr.h>
#include <h/utils.h>
static char *types[] = {
"OK",
"INI", "ACK", "ERR", "CMD", "QRY", "TTY", "WIN", "DATA", "EOF", "FIN",
"XXX", NULL
};
static FILE *fp = NULL;
static int PEERrfd = NOTOK;
static int PEERwfd = NOTOK;
/*
* static prototypes
*/
static int rclose (struct record *, char *, ...);
int
rcinit (int rfd, int wfd)
{
char *cp, buffer[BUFSIZ];
PEERrfd = rfd;
PEERwfd = wfd;
if ((cp = getenv ("MHVDEBUG")) && *cp) {
snprintf (buffer, sizeof(buffer), "%s.out", invo_name);
if ((fp = fopen (buffer, "w"))) {
fseek (fp, 0L, SEEK_END);
fprintf (fp, "%d: rcinit (%d, %d)\n", (int) getpid(), rfd, wfd);
fflush (fp);
}
}
return OK;
}
int
rcdone (void)
{
if (PEERrfd != NOTOK)
close (PEERrfd);
if (PEERwfd != NOTOK)
close (PEERwfd);
if (fp) {
fclose (fp);
fp = NULL;
}
return OK;
}
int
rc2rc (char code, int len, char *data, struct record *rc)
{
if (rc2peer (code, len, data) == NOTOK)
return NOTOK;
return peer2rc (rc);
}
int
str2rc (char code, char *str, struct record *rc)
{
return rc2rc (code, str ? strlen (str) : 0, str, rc);
}
int
peer2rc (struct record *rc)
{
if (rc->rc_data)
free (rc->rc_data);
if (read (PEERrfd, (char *) rc_head (rc), RHSIZE (rc)) != RHSIZE (rc))
return rclose (rc, "read from peer lost(1)");
if (rc->rc_len) {
rc->rc_data = mh_xmalloc ((unsigned) rc->rc_len + 1);
if (read (PEERrfd, rc->rc_data, rc->rc_len) != rc->rc_len)
return rclose (rc, "read from peer lost(2)");
rc->rc_data[rc->rc_len] = 0;
}
else
rc->rc_data = NULL;
if (fp) {
fseek (fp, 0L, SEEK_END);
fprintf (fp, "%d: <--- %s %d: \"%*.*s\"\n", (int) getpid(),
types[(unsigned char)rc->rc_type], rc->rc_len,
rc->rc_len, rc->rc_len, rc->rc_data);
fflush (fp);
}
return rc->rc_type;
}
int
rc2peer (char code, int len, char *data)
{
struct record rcs;
register struct record *rc = &rcs;
rc->rc_type = code;
rc->rc_len = len;
if (fp) {
fseek (fp, 0L, SEEK_END);
fprintf (fp, "%d: ---> %s %d: \"%*.*s\"\n", (int) getpid(),
types[(unsigned char)rc->rc_type], rc->rc_len,
rc->rc_len, rc->rc_len, data);
fflush (fp);
}
if (write (PEERwfd, (char *) rc_head (rc), RHSIZE (rc)) != RHSIZE (rc))
return rclose (rc, "write to peer lost(1)");
if (rc->rc_len)
if (write (PEERwfd, data, rc->rc_len) != rc->rc_len)
return rclose (rc, "write to peer lost(2)");
return OK;
}
int
str2peer (char code, char *str)
{
return rc2peer (code, str ? strlen (str) : 0, str);
}
int
fmt2peer (char code, char *fmt, ...)
{
int return_value;
va_list ap;
va_start(ap, fmt);
return_value = verr2peer (code, NULL, fmt, ap);
va_end(ap);
return return_value;
}
int
err2peer (char code, char *what, char *fmt, ...)
{
int return_value;
va_list ap;
va_start(ap, fmt);
return_value = verr2peer(code, what, fmt, ap);
va_end(ap);
return return_value; /* This routine returned garbage before 1999-07-15. */
}
int
verr2peer (char code, char *what, char *fmt, va_list ap)
{
int eindex = errno;
int len, buflen;
char *bp, *s, buffer[BUFSIZ * 2];
/* Get buffer ready to go */
bp = buffer;
buflen = sizeof(buffer);
vsnprintf (bp, buflen, fmt, ap);
len = strlen (bp);
bp += len;
buflen -= len;
if (what) {
if (*what) {
snprintf (bp, buflen, " %s: ", what);
len = strlen (bp);
bp += len;
buflen -= len;
}
if ((s = strerror (eindex)))
strncpy (bp, s, buflen);
else
snprintf (bp, buflen, "unknown error %d", eindex);
len = strlen (bp);
bp += len;
buflen -= len;
}
return rc2peer (code, bp - buffer, buffer);
}
static int
rclose (struct record *rc, char *fmt, ...)
{
va_list ap;
static char buffer[BUFSIZ * 2];
va_start(ap, fmt);
vsnprintf (buffer, sizeof(buffer), fmt, ap);
va_end(ap);
rc->rc_len = strlen (rc->rc_data = getcpy (buffer));
return (rc->rc_type = RC_XXX);
}
|
