File: sendbark.c

package info (click to toggle)
ifmail 2.14tx8.10-22
  • links: PTS, VCS
  • area: main
  • in suites: jessie, jessie-kfreebsd
  • size: 3,816 kB
  • ctags: 4,126
  • sloc: ansic: 30,317; perl: 4,955; yacc: 835; makefile: 732; sh: 426; cpp: 235; lex: 206; awk: 24
file content (150 lines) | stat: -rw-r--r-- 2,496 bytes parent folder | download | duplicates (15)
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
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include "ftn.h"
#include "lutil.h"
#include "ttyio.h"
#include "session.h"
#include "statetbl.h"

extern unsigned INT16 crc16(char*,int);
extern char *reqname(faddr*);
extern int xmrecv(char*);

static int send_bark(void);
static char *nm,*pw,*dt;

int sendbark(void);
int sendbark(void)
{
	char *fn;
	FILE *fp;
	char buf[256],*p;
	int rc=0;

	fn=reqname(remote->addr);
	if ((fp=fopen(fn,"r")) == NULL)
	{
		debug(10,"no request file for this node");
		PUTCHAR(ETB);
		return 0;
	}
	while (fgets(buf,sizeof(buf)-1,fp))
	{
		nm=buf;
		pw=strchr(buf,'!');
		/* if ((dt=strchr(buf,'-')) == NULL) */
		dt=strchr(buf,'+');

		if (pw) *pw++='\0';
		if (dt) *dt++='\0';

		if (nm)
		{
			while (isspace(*nm)) nm++;
			for (p=nm;(*p != '!') && (*p != '+') && 
				(!isspace(*p));p++);
			*p='\0';
		}
		if (pw)
		{
			while (isspace(*pw)) pw++;
			for (p=pw;(*p != '!') && (*p != '+') && 
				 (!isspace(*p));p++);
			*p='\0';
		}
		else pw="";
		if (dt)
		{
			while (isspace(*nm)) nm++;
			for (p=nm;(*p != '!') && (*p != '+') && 
				(*p != '-') && (!isspace(*p));p++);
			*p='\0';
		}
		else dt="0";

		if (*nm == ';') continue;

		loginf("sending bark request for \"%s\", password \"%s\", update \"%s\"",
			S(nm),S(pw),S(dt));
		if ((rc=send_bark())) break;
	}
	if (rc == 0) PUTCHAR(ETB);
	fclose(fp);
	if (rc == 0) unlink(fn);
	return rc;
}

SM_DECL(send_bark,"sendbark")
SM_STATES
	send,waitack,getfile
SM_NAMES
	"send","waitack","getfile"
SM_EDECL

	int c;
	char buf[256];
	unsigned INT16 crc;
	int count=0;

	sprintf(buf,"%s %s %s",nm,dt,pw);
	crc=crc16(buf,strlen(buf));
	debug(10,"sending bark packet \"%s\", crc=0x%04x",buf,crc);

SM_START(send)

SM_STATE(send)

	if (count++ > 6)
	{
		loginf("bark request failed");
		SM_ERROR;
	}

	PUTCHAR(ACK);
	PUT(buf,strlen(buf));
	PUTCHAR(ETX);
	PUTCHAR(crc&0xff);
	PUTCHAR((crc>>8)&0xff);
	if (STATUS) {SM_ERROR;}
	else {SM_PROCEED(waitack);}

SM_STATE(waitack)

	c=GETCHAR(15);
	if (c == TIMEOUT)
	{
		debug(10,"sendbark got timeout waiting for ACK");
		SM_PROCEED(send);
	}
	else if (c < 0)
	{
		SM_PROCEED(send);
	}
	else if (c == ACK)
	{
		SM_PROCEED(getfile);
	}
	else if (c == NAK)
	{
		SM_PROCEED(send);
	}
	else
	{
		debug(10,"sendbark got %s waiting for ACK",
			printablec(c));
		SM_PROCEED(send);
	}

SM_STATE(getfile)

	switch (xmrecv(NULL))
	{
	case 0:	SM_PROCEED(getfile); break;
	case 1:	SM_SUCCESS; break;
	default: SM_ERROR; break;
	}

SM_END
SM_RETURN