#include <stdio.h>
#include <string.h>
#include <ctype.h>
-#if defined(HAVE_UNISTD_H)
#include <unistd.h>
-#endif
-#if defined(STDC_HEADERS)
#include <stdlib.h>
-#endif
#include <errno.h>
#include "fetchmail.h"
#include "socket.h"
-#include "i18n.h"
+#include "gettext.h"
+#include "uid_db.h"
#ifdef OPIE_ENABLE
#ifdef __cplusplus
#if defined(GSSAPI)
flag has_gssapi = FALSE;
#endif /* defined(GSSAPI) */
-#if defined(KERBEROS_V4) || defined(KERBEROS_V5)
+#if defined(KERBEROS_V5)
flag has_kerberos = FALSE;
-#endif /* defined(KERBEROS_V4) || defined(KERBEROS_V5) */
+#endif /* defined(KERBEROS_V5) */
static flag has_cram = FALSE;
#ifdef OPIE_ENABLE
flag has_otp = FALSE;
#if defined(GSSAPI)
has_gssapi = FALSE;
#endif /* defined(GSSAPI) */
-#if defined(KERBEROS_V4) || defined(KERBEROS_V5)
+#if defined(KERBEROS_V5)
has_kerberos = FALSE;
-#endif /* defined(KERBEROS_V4) || defined(KERBEROS_V5) */
+#endif /* defined(KERBEROS_V5) */
has_cram = FALSE;
#ifdef OPIE_ENABLE
has_otp = FALSE;
has_gssapi = TRUE;
#endif /* defined(GSSAPI) */
-#if defined(KERBEROS_V4)
- if (strstr(buffer, "KERBEROS_V4"))
- has_kerberos = TRUE;
-#endif /* defined(KERBEROS_V4) */
-
#ifdef OPIE_ENABLE
if (strstr(buffer, "X-OTP"))
has_otp = TRUE;
* we have a means of reliably tracking which mail we need to
* refetch should the connection abort in the middle.
* fetchall forces RETR, as does keep without UIDL */
- peek_capable = !ctl->fetchall && (!ctl->keep || ctl->server.uidl);
+ peek_capable = !ctl->fetchall;
}
static int pop3_getauth(int sock, struct query *ctl, char *greeting)
#if defined(GSSAPI)
has_gssapi = FALSE;
#endif /* defined(GSSAPI) */
-#if defined(KERBEROS_V4) || defined(KERBEROS_V5)
+#if defined(KERBEROS_V5)
has_kerberos = FALSE;
-#endif /* defined(KERBEROS_V4) || defined(KERBEROS_V5) */
+#endif /* defined(KERBEROS_V5) */
has_cram = FALSE;
#ifdef OPIE_ENABLE
has_otp = FALSE;
*/
if ((ctl->server.authenticate == A_ANY) ||
(ctl->server.authenticate == A_GSSAPI) ||
- (ctl->server.authenticate == A_KERBEROS_V4) ||
(ctl->server.authenticate == A_KERBEROS_V5) ||
(ctl->server.authenticate == A_OTP) ||
(ctl->server.authenticate == A_CRAM_MD5) ||
* whether TLS is mandatory or opportunistic unless SSLOpen() fails
* (see below). */
if (gen_transact(sock, "STLS") == PS_SUCCESS
- && SSLOpen(sock, ctl->sslcert, ctl->sslkey, "tls1", ctl->sslcertck,
+ && (set_timeout(mytimeout), SSLOpen(sock, ctl->sslcert, ctl->sslkey, "tls1", ctl->sslcertck,
ctl->sslcertfile, ctl->sslcertpath, ctl->sslfingerprint, commonname,
- ctl->server.pollname, &ctl->remotename) != -1)
+ ctl->server.pollname, &ctl->remotename)) != -1)
{
/*
* RFC 2595 says this:
* Now that we're confident in our TLS connection we can
* guarantee a secure capability re-probe.
*/
+ set_timeout(0);
done_capa = FALSE;
ok = capa_probe(sock);
if (ok != PS_SUCCESS) {
} else if (must_tls(ctl)) {
/* Config required TLS but we couldn't guarantee it, so we must
* stop. */
+ set_timeout(0);
report(stderr, GT_("%s: upgrade to TLS failed.\n"), commonname);
return PS_SOCKET;
} else {
* allowed til post-authentication), so leave it in an unknown
* state, mark it as such, and check more carefully if things
* go wrong when we try to authenticate. */
+ set_timeout(0);
connection_may_have_tls_errors = TRUE;
if (outlevel >= O_VERBOSE)
{
/*
* OK, we have an authentication type now.
*/
-#if defined(KERBEROS_V4)
- /*
- * Servers doing KPOP have to go through a dummy login sequence
- * rather than doing SASL.
- */
- if (has_kerberos &&
- ctl->server.service && (strcmp(ctl->server.service, KPOP_PORT)!=0)
- && (ctl->server.authenticate == A_KERBEROS_V4
- || ctl->server.authenticate == A_KERBEROS_V5
- || ctl->server.authenticate == A_ANY))
- {
- ok = do_rfc1731(sock, "AUTH", ctl->server.truename);
- if (ok == PS_SUCCESS || ctl->server.authenticate != A_ANY)
- break;
- }
-#endif /* defined(KERBEROS_V4) || defined(KERBEROS_V5) */
#if defined(GSSAPI)
if (has_gssapi &&
* users switching *to* KPOP accidentally revealing their
* password */
if ((ctl->server.authenticate == A_ANY
- || ctl->server.authenticate == A_KERBEROS_V4
|| ctl->server.authenticate == A_KERBEROS_V5)
&& (ctl->server.service != NULL
&& strcmp(ctl->server.service, KPOP_PORT) == 0))
ok = gen_transact(sock, "APOP %s %s", ctl->remotename, (char *)ctl->digest);
break;
- case P_RPOP:
- if ((ok = gen_transact(sock,"USER %s", ctl->remotename)) == 0) {
- strlcpy(shroud, ctl->password, sizeof(shroud));
- ok = gen_transact(sock, "RPOP %s", ctl->password);
- memset(shroud, 0x55, sizeof(shroud));
- shroud[0] = '\0';
- }
- break;
-
default:
report(stderr, GT_("Undefined protocol request in POP3_auth\n"));
ok = PS_ERROR;
s[0] = '\0';
}
-/* XXX FIXME: using the Message-ID is unsafe, some messages (spam,
- * broken messages) do not have Message-ID headers, and messages without
- * those appear to break this code and cause fetchmail (at least version
- * 6.2.3) to not delete such messages properly after retrieval.
- * See Sourceforge Bug #780933.
- *
- * The other problem is that the TOP command itself is optional, too... */
-static int pop3_gettopid(int sock, int num , char *id, size_t idsize)
-{
- int ok;
- int got_it;
- char buf [POPBUFSIZE+1];
- snprintf(buf, sizeof(buf), "TOP %d 1", num);
- if ((ok = gen_transact(sock, "%s", buf)) != 0)
- return ok;
- got_it = 0;
- while (gen_recv(sock, buf, sizeof(buf)) == 0)
- {
- if (DOTLINE(buf))
- break;
- if (!got_it && 0 == strncasecmp("Message-Id:", buf, 11)) {
- char *p = buf + 11;
- got_it = 1;
- p += strspn(p, POSIX_space);
- strlcpy(id, p, idsize);
- trim(id);
- }
- }
- /* XXX FIXME: do not return success here if no Message-ID header was
- * found. */
- return 0;
-}
-
/** Parse the UID response (leading +OK must have been
* stripped off) in buf, store the number in gotnum, and store the ID
* into the caller-provided buffer "id" of size "idsize".
last_nr = count + 1;
while (first_nr < last_nr - 1)
{
- struct idlist *newl;
+ struct uid_db_record *rec;
try_nr = (first_nr + last_nr) / 2;
if ((ok = pop3_getuidl(sock, try_nr, id, sizeof(id))) != 0)
return ok;
- if ((newl = str_in_list(&ctl->oldsaved, id, FALSE)))
+ if ((rec = find_uid_by_id(&ctl->oldsaved, id)))
{
- flag mark = newl->val.status.mark;
+ flag mark = rec->status;
if (mark == UID_DELETED || mark == UID_EXPUNGED)
{
if (outlevel >= O_VERBOSE)
report(stderr, GT_("id=%s (num=%u) was deleted, but is still present!\n"), id, try_nr);
/* just mark it as seen now! */
- newl->val.status.mark = mark = UID_SEEN;
+ rec->status = mark = UID_SEEN;
}
/* narrow the search region! */
first_nr = try_nr;
/* save the number */
- newl->val.status.num = try_nr;
+ set_uid_db_num(&ctl->oldsaved, rec, try_nr);
}
else
{
last_nr = try_nr;
/* save it */
- newl = save_str(&ctl->oldsaved, id, UID_UNSEEN);
- newl->val.status.num = try_nr;
+ rec = uid_db_insert(&ctl->oldsaved, id, UID_UNSEEN);
+ set_uid_db_num(&ctl->oldsaved, rec, try_nr);
}
}
if (outlevel >= O_DEBUG && last_nr <= count)
return 0;
}
-static int pop3_slowuidl( int sock, struct query *ctl, int *countp, int *newp)
-{
- /* XXX FIXME: this code is severely broken. A Cc:d mailing list
- * message will arrive twice with the same Message-ID, so this
- * slowuidl code will break. Same goes for messages without
- * Message-ID headers at all. This code would best be removed. */
- /* This approach tries to get the message headers from the
- * remote hosts and compares the message-id to the already known
- * ones:
- * + if the first message containes a new id, all messages on
- * the server will be new
- * + if the first is known, try to estimate the last known message
- * on the server and check. If this works you know the total number
- * of messages to get.
- * + Otherwise run a binary search to determine the last known message
- */
- int ok, nolinear = 0;
- int first_nr, list_len, try_id, try_nr, add_id;
- int num;
- char id [IDLEN+1];
-
- if ((ok = pop3_gettopid(sock, 1, id, sizeof(id))) != 0)
- return ok;
-
- if( ( first_nr = str_nr_in_list(&ctl->oldsaved, id) ) == -1 ) {
- /* the first message is unknown -> all messages are new */
- *newp = *countp;
- return 0;
- }
-
- /* check where we expect the latest known message */
- list_len = count_list( &ctl->oldsaved );
- try_id = list_len - first_nr; /* -1 + 1 */
- if( try_id > 1 ) {
- if( try_id <= *countp ) {
- if ((ok = pop3_gettopid(sock, try_id, id, sizeof(id))) != 0)
- return ok;
-
- try_nr = str_nr_last_in_list(&ctl->oldsaved, id);
- } else {
- try_id = *countp+1;
- try_nr = -1;
- }
- if( try_nr != list_len -1 ) {
- /* some messages inbetween have been deleted... */
- if( try_nr == -1 ) {
- nolinear = 1;
-
- for( add_id = 1<<30; add_id > try_id-1; add_id >>= 1 )
- ;
- for( ; add_id; add_id >>= 1 ) {
- if( try_nr == -1 ) {
- if( try_id - add_id <= 1 ) {
- continue;
- }
- try_id -= add_id;
- } else
- try_id += add_id;
-
- if ((ok = pop3_gettopid(sock, try_id, id, sizeof(id))) != 0)
- return ok;
- try_nr = str_nr_in_list(&ctl->oldsaved, id);
- }
- if( try_nr == -1 ) {
- try_id--;
- }
- } else {
- report(stderr,
- GT_("Messages inserted into list on server. Cannot handle this.\n"));
- return -1;
- }
- }
- }
- /* the first try_id messages are known -> copy them to the newsaved list */
- for( num = first_nr; num < list_len; num++ )
- {
- struct idlist *newl = save_str(&ctl->newsaved,
- str_from_nr_list(&ctl->oldsaved, num),
- UID_UNSEEN);
- newl->val.status.num = num - first_nr + 1;
- }
-
- if( nolinear ) {
- free_str_list(&ctl->oldsaved);
- ctl->oldsaved = 0;
- last = try_id;
- }
-
- *newp = *countp - try_id;
- return 0;
-}
-
static int pop3_getrange(int sock,
struct query *ctl,
const char *folder,
(void)folder;
/* Ensure that the new list is properly empty */
- ctl->newsaved = (struct idlist *)NULL;
+ clear_uid_db(&ctl->newsaved);
#ifdef MBOX
/* Alain Knaff suggests this, but it's not RFC standard */
} else
return(ok);
- /*
- * Newer, RFC-1725/1939-conformant POP servers may not have the LAST
- * command. We work as hard as possible to hide this, but it makes
- * counting new messages intrinsically quadratic in the worst case.
- */
+ /* unless fetching all mail, get UID list (UIDL) */
last = 0;
*newp = -1;
- /* if there are messages, and UIDL is desired, use UIDL
- * also use UIDL if fetchall is unset */
- if (*countp > 0 && (!ctl->fetchall || ctl->server.uidl))
+ if (*countp > 0)
{
int fastuidl;
char id [IDLEN+1];
+ set_uid_db_num_pos_0(&ctl->oldsaved, *countp);
+ set_uid_db_num_pos_0(&ctl->newsaved, *countp);
+
/* should we do fast uidl this time? */
fastuidl = ctl->fastuidl;
if (*countp > 7 && /* linear search is better if there are few mails! */
else
dofastuidl = 0;
- if (!ctl->server.uidl) {
- gen_send(sock, "LAST");
- ok = pop3_ok(sock, buf);
- } else
- ok = 1;
-
- if (ok == 0)
- {
- /* scan LAST reply */
- if (sscanf(buf, "%d", &last) == 0)
- {
- report(stderr, GT_("protocol error\n"));
- return(PS_ERROR);
- }
- *newp = (*countp - last);
- }
- else
{
/* do UIDL */
if (dofastuidl)
/* grab the mailbox's UID list */
if (gen_transact(sock, "UIDL") != 0)
{
- /* don't worry, yet! do it the slow way */
- if (pop3_slowuidl(sock, ctl, countp, newp))
- {
+ if (!ctl->fetchall) {
report(stderr, GT_("protocol error while fetching UIDLs\n"));
return(PS_ERROR);
}
if (parseuid(buf, &unum, id, sizeof(id)) == PS_SUCCESS)
{
- struct idlist *old, *newl;
+ struct uid_db_record *old_rec, *new_rec;
- newl = save_str(&ctl->newsaved, id, UID_UNSEEN);
- newl->val.status.num = unum;
+ new_rec = uid_db_insert(&ctl->newsaved, id, UID_UNSEEN);
- if ((old = str_in_list(&ctl->oldsaved, id, FALSE)))
+ if ((old_rec = find_uid_by_id(&ctl->oldsaved, id)))
{
- flag mark = old->val.status.mark;
+ flag mark = old_rec->status;
if (mark == UID_DELETED || mark == UID_EXPUNGED)
{
/* XXX FIXME: switch 3 occurrences from
if (outlevel >= O_VERBOSE)
report(stderr, GT_("id=%s (num=%d) was deleted, but is still present!\n"), id, (int)unum);
/* just mark it as seen now! */
- old->val.status.mark = mark = UID_SEEN;
+ old_rec->status = mark = UID_SEEN;
}
- newl->val.status.mark = mark;
+ new_rec->status = mark;
if (mark == UID_UNSEEN)
{
(*newp)++;
* swap the lists (say, due to socket error),
* the same mail will not be downloaded again.
*/
- old = save_str(&ctl->oldsaved, id, UID_UNSEEN);
+ old_rec = uid_db_insert(&ctl->oldsaved, id, UID_UNSEEN);
+
+ }
+ /*
+ * save the number if it will be needed later on
+ * (messsage will either be fetched or deleted)
+ */
+ if (new_rec->status == UID_UNSEEN || ctl->flush) {
+ set_uid_db_num(&ctl->oldsaved, old_rec, unum);
+ set_uid_db_num(&ctl->newsaved, new_rec, unum);
}
- /* save the number */
- old->val.status.num = unum;
} else
return PS_ERROR;
} /* multi-line loop for UIDL reply */
static int pop3_is_old(int sock, struct query *ctl, int num)
/* is the given message old? */
{
- struct idlist *newl;
- if (!ctl->oldsaved)
+ struct uid_db_record *rec;
+
+ if (!uid_db_n_records(&ctl->oldsaved))
return (num <= last);
else if (dofastuidl)
{
return(TRUE);
/* in fast uidl, we manipulate the old list only! */
-
- if ((newl = id_find(&ctl->oldsaved, num)))
+ if ((rec = find_uid_by_num(&ctl->oldsaved, num)))
{
/* we already have the id! */
- return(newl->val.status.mark != UID_UNSEEN);
+ return(rec->status != UID_UNSEEN);
}
/* get the uidl first! */
if (pop3_getuidl(sock, num, id, sizeof(id)) != PS_SUCCESS)
return(TRUE);
- if ((newl = str_in_list(&ctl->oldsaved, id, FALSE))) {
+ if ((rec = find_uid_by_id(&ctl->oldsaved, id))) {
/* we already have the id! */
- newl->val.status.num = num;
- return(newl->val.status.mark != UID_UNSEEN);
+ set_uid_db_num(&ctl->oldsaved, rec, num);
+ return(rec->status != UID_UNSEEN);
}
/* save it */
- newl = save_str(&ctl->oldsaved, id, UID_UNSEEN);
- newl->val.status.num = num;
+ rec = uid_db_insert(&ctl->oldsaved, id, UID_UNSEEN);
+ set_uid_db_num(&ctl->oldsaved, rec, num);
+
return(FALSE);
+ } else {
+ rec = find_uid_by_num(&ctl->newsaved, num);
+ return !rec || rec->status != UID_UNSEEN;
}
- else
- return ((newl = id_find(&ctl->newsaved, num)) != NULL &&
- newl->val.status.mark != UID_UNSEEN);
-}
-
-#ifdef UNUSED
-/*
- * We could use this to fetch headers only as we do for IMAP. The trouble
- * is that there's no way to fetch the body only. So the following RETR
- * would have to re-fetch the header. Enough messages have longer headers
- * than bodies to make this a net loss.
- */
-static int pop_fetch_headers(int sock, struct query *ctl,int number,int *lenp)
-/* request headers of nth message */
-{
- int ok;
- char buf[POPBUFSIZE+1];
-
- gen_send(sock, "TOP %d 0", number);
- if ((ok = pop3_ok(sock, buf)) != 0)
- return(ok);
-
- *lenp = -1; /* we got sizes from the LIST response */
-
- return(PS_SUCCESS);
}
-#endif /* UNUSED */
static int pop3_fetch(int sock, struct query *ctl, int number, int *lenp)
/* request nth message */
static void mark_uid_seen(struct query *ctl, int number)
/* Tell the UID code we've seen this. */
{
- struct idlist *sdp;
+ struct uid_db_record *rec;
- if ((sdp = id_find(&ctl->newsaved, number)))
- sdp->val.status.mark = UID_SEEN;
+ if ((rec = find_uid_by_num(&ctl->newsaved, number)))
+ rec->status = UID_SEEN;
/* mark it as seen in oldsaved also! In case, we do not swap the lists
* (say, due to socket error), the same mail will not be downloaded
* again.
*/
- if ((sdp = id_find(&ctl->oldsaved, number)))
- sdp->val.status.mark = UID_SEEN;
+ if ((rec = find_uid_by_num(&ctl->oldsaved, number)))
+ rec->status = UID_SEEN;
}
static int pop3_delete(int sock, struct query *ctl, int number)
/* delete a given message */
{
+ struct uid_db_record *rec;
int ok;
mark_uid_seen(ctl, number);
/* actually, mark for deletion -- doesn't happen until QUIT time */
ok = gen_transact(sock, "DELE %d", number);
if (ok != PS_SUCCESS)
return(ok);
- delete_str(dofastuidl ? &ctl->oldsaved : &ctl->newsaved, number);
+
+ rec = find_uid_by_num(dofastuidl ? &ctl->oldsaved : &ctl->newsaved, number);
+ rec->status = UID_DELETED;
return(PS_SUCCESS);
}
{
int ok;
-#ifdef __UNUSED__
- /*
- * We used to do this in case the server marks messages deleted when seen.
- * (Yes, this has been reported, in the MercuryP/NLM server.
- * It's even legal under RFC 1939 (section 8) as a site policy.)
- * It interacted badly with UIDL, though. Thomas Zajic wrote:
- * "Running 'fetchmail -F -v' and checking the logs, I found out
- * that fetchmail did in fact flush my mailbox properly, but sent
- * a RSET just before sending QUIT to log off. This caused the
- * POP3 server to undo/forget about the previous DELEs, resetting
- * my mailbox to its original (ie. unflushed) state. The
- * ~/.fetchids file did get flushed though, so the next time
- * fetchmail was run it saw all the old messages as new ones ..."
- */
- if (ctl->keep)
- gen_transact(sock, "RSET");
-#endif /* __UNUSED__ */
-
ok = gen_transact(sock, "QUIT");
if (!ok)
expunge_uids(ctl);