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
|
/*
* pop2.c -- POP@ protocol methods
*
* Copyright 1996 by Eric S. Raymond
* All rights reserved.
* For license terms, see the file COPYING in this directory.
*/
#include <config.h>
#include <stdio.h>
#if defined(STDC_HEADERS)
#include <stdlib.h>
#endif
#include "socket.h"
#include "fetchmail.h"
static int pound_arg, equal_arg;
int pop2_ok (sockfp, argbuf)
/* parse POP2 command response */
FILE *sockfp;
char *argbuf;
{
int ok;
char buf [POPBUFSIZE+1];
pound_arg = equal_arg = -1;
if (fgets(buf, sizeof(buf), sockfp) != (char *)NULL) {
if (outlevel == O_VERBOSE)
fprintf(stderr,"%s",buf);
if (buf[0] == '+')
ok = 0;
else if (buf[0] == '#')
{
pound_arg = atoi(buf+1);
ok = 0;
}
else if (buf[0] == '=')
{
equal_arg = atoi(buf+1);
ok = 0;
}
else if (buf[0] == '-')
ok = PS_ERROR;
else
ok = PS_PROTOCOL;
if (argbuf != NULL)
strcpy(argbuf,buf);
}
else
ok = PS_SOCKET;
return(ok);
}
int pop2_getauth(sockfp, ctl, buf)
/* apply for connection authorization */
FILE *sockfp;
struct query *ctl;
char *buf;
{
return(gen_transact(sockfp,
"HELO %s %s",
ctl->remotename, ctl->password));
}
static int pop2_getrange(sockfp, ctl, countp, newp)
/* get range of messages to be fetched */
FILE *sockfp;
struct query *ctl;
int *countp, *newp;
{
/*
* We should have picked up a count of messages in the user's
* default inbox from the pop2_getauth() response.
*/
if (pound_arg == -1)
return(PS_ERROR);
/* maybe the user wanted a non-default folder */
if (ctl->mailbox[0])
{
int ok = gen_transact(sockfp, "FOLD %s", ctl->mailbox);
if (ok != 0)
return(ok);
if (pound_arg == -1)
return(PS_ERROR);
}
*countp = pound_arg;
*newp = -1;
return(0);
}
static int pop2_fetch(sockfp, number, lenp)
/* request nth message */
FILE *sockfp;
int number;
int *lenp;
{
int ok;
*lenp = 0;
ok = gen_transact(sockfp, "READ %d", number);
if (ok)
return(0);
*lenp = equal_arg;
gen_send(sockfp, "RETR");
return(ok);
}
static int pop2_trail(sockfp, ctl, number)
/* send acknowledgement for message data */
FILE *sockfp;
struct query *ctl;
int number;
{
return(gen_transact(sockfp, ctl->keep ? "ACKS" : "ACKD"));
}
const static struct method pop2 =
{
"POP2", /* Post Office Protocol v2 */
109, /* standard POP2 port */
0, /* this is not a tagged protocol */
0, /* does not use message delimiter */
pop2_ok, /* parse command response */
pop2_getauth, /* get authorization */
pop2_getrange, /* query range of messages */
NULL, /* no way to get sizes */
NULL, /* messages are always new */
pop2_fetch, /* request given message */
pop2_trail, /* eat message trailer */
NULL, /* no POP2 delete method */
NULL, /* no POP2 expunge command */
"QUIT", /* the POP2 exit command */
};
int doPOP2 (ctl)
/* retrieve messages using POP2 */
struct query *ctl;
{
return(do_protocol(ctl, &pop2));
}
/* pop2.c ends here */
|
