2 * pop2.c -- POP2 protocol methods
4 * Copyright 1997 by Eric S. Raymond
5 * For license terms, see the file COPYING in this directory.
12 #if defined(STDC_HEADERS)
15 #include "fetchmail.h"
18 static int pound_arg, equal_arg;
20 int pop2_ok (int sock, char *argbuf)
21 /* parse POP2 command response */
24 char buf [POPBUFSIZE+1];
26 pound_arg = equal_arg = -1;
28 if ((ok = gen_recv(sock, buf, sizeof(buf))) == 0)
32 else if (buf[0] == '#')
34 pound_arg = atoi(buf+1);
37 else if (buf[0] == '=')
39 equal_arg = atoi(buf+1);
42 else if (buf[0] == '-')
54 int pop2_getauth(int sock, struct query *ctl, char *buf)
55 /* apply for connection authorization */
57 return(gen_transact(sock,
59 ctl->remotename, ctl->password));
62 static int pop2_getrange(int sock, struct query *ctl, const char *folder,
63 int *countp, int *newp, int *bytes)
64 /* get range of messages to be fetched */
66 /* maybe the user wanted a non-default folder */
69 int ok = gen_transact(sock, "FOLD %s", folder);
78 * We should have picked up a count of messages in the user's
79 * default inbox from the pop2_getauth() response.
81 * Note: this logic only works because there is no way to select
82 * both the unnamed folder and named folders within a single
83 * fetchmail run. If that assumption ever becomes invalid, the
84 * pop2_getauth code will have to stash the pound response away
85 * explicitly in case it gets stepped on.
96 static int pop2_fetch(int sock, struct query *ctl, int number, int *lenp)
97 /* request nth message */
102 ok = gen_transact(sock, "READ %d", number);
107 gen_send(sock, "RETR");
112 static int pop2_trail(int sock, struct query *ctl, int number)
113 /* send acknowledgement for message data */
115 return(gen_transact(sock, ctl->keep ? "ACKS" : "ACKD"));
118 static int pop2_logout(int sock, struct query *ctl)
119 /* send logout command */
121 return(gen_transact(sock, "QUIT"));
124 const static struct method pop2 =
126 "POP2", /* Post Office Protocol v2 */
128 "pop2", /* standard POP3 port */
130 109, /* standard POP2 port */
132 FALSE, /* this is not a tagged protocol */
133 FALSE, /* does not use message delimiter */
134 pop2_ok, /* parse command response */
135 NULL, /* no password canonicalization */
136 pop2_getauth, /* get authorization */
137 pop2_getrange, /* query range of messages */
138 NULL, /* no way to get sizes */
139 NULL, /* messages are always new */
140 pop2_fetch, /* request given message */
141 NULL, /* no way to fetch body alone */
142 pop2_trail, /* eat message trailer */
143 NULL, /* no POP2 delete method */
144 pop2_logout, /* log out, we're done */
145 FALSE, /* no, we can't re-poll */
148 int doPOP2 (struct query *ctl)
149 /* retrieve messages using POP2 */
151 peek_capable = FALSE;
152 return(do_protocol(ctl, &pop2));
154 #endif /* POP2_ENABLE */
156 /* pop2.c ends here */