/*
- * $Id$
- *
* POP3 service for the Citadel system
- * Copyright (C) 1998-2001 by Art Cancro and others.
- * This code is released under the terms of the GNU General Public License.
+ *
+ * Copyright (c) 1998-2012 by the citadel.org team
+ *
+ * This program is open source software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3.
+ *
+ *
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ *
+ *
+ *
*
* Current status of standards conformance:
*
#include <string.h>
#include <limits.h>
#include <ctype.h>
+#include <libcitadel.h>
#include "citadel.h"
#include "server.h"
#include "citserver.h"
#include "support.h"
#include "config.h"
-#include "room_ops.h"
#include "user_ops.h"
-#include "policy.h"
#include "database.h"
#include "msgbase.h"
-#include "tools.h"
#include "internet_addressing.h"
#include "serv_pop3.h"
#include "md5.h"
#include "ctdl_module.h"
+int POP3DebugEnabled = 0;
+
+#define POP3DBGLOG(LEVEL) if ((LEVEL != LOG_DEBUG) || (POP3DebugEnabled != 0))
+#define CCCID CCC->cs_pid
+#define POP3_syslog(LEVEL, FORMAT, ...) \
+ POP3DBGLOG(LEVEL) syslog(LEVEL, \
+ "POP3CC[%d] " FORMAT, \
+ CCCID, __VA_ARGS__)
+#define POP3M_syslog(LEVEL, FORMAT) \
+ POP3DBGLOG(LEVEL) syslog(LEVEL, \
+ "POP3CC[%d] " FORMAT, \
+ CCCID)
/*
* This cleanup function blows away the temporary memory and files used by
* the POP3 server.
*/
-void pop3_cleanup_function(void) {
+void pop3_cleanup_function(void)
+{
+ struct CitContext *CCC = CC;
/* Don't do this stuff if this is not a POP3 session! */
- if (CC->h_command_function != pop3_command_loop) return;
+ if (CCC->h_command_function != pop3_command_loop) return;
- lprintf(CTDL_DEBUG, "Performing POP3 cleanup hook\n");
+ POP3M_syslog(LOG_DEBUG, "Performing POP3 cleanup hook");
if (POP3->msgs != NULL) free(POP3->msgs);
free(POP3);
/*
* Here's where our POP3 session begins its happy day.
*/
-void pop3_greeting(void) {
- strcpy(CC->cs_clientname, "POP3 session");
- CC->internal_pgm = 1;
- POP3 = malloc(sizeof(struct citpop3));
+void pop3_greeting(void)
+{
+ struct CitContext *CCC = CC;
+
+ strcpy(CCC->cs_clientname, "POP3 session");
+ CCC->internal_pgm = 1;
+ CCC->session_specific_data = malloc(sizeof(struct citpop3));
memset(POP3, 0, sizeof(struct citpop3));
- cprintf("+OK Citadel POP3 server %s\r\n",
- CC->cs_nonce);
+ cprintf("+OK Citadel POP3 server ready.\r\n");
}
/*
* POP3S is just like POP3, except it goes crypto right away.
*/
-void pop3s_greeting(void) {
+void pop3s_greeting(void)
+{
+ struct CitContext *CCC = CC;
CtdlModuleStartCryptoMsgs(NULL, NULL, NULL);
+
+/* kill session if no crypto */
+#ifdef HAVE_OPENSSL
+ if (!CCC->redirect_ssl) CCC->kill_me = KILLME_NO_CRYPTO;
+#else
+ CCC->kill_me = KILLME_NO_CRYPTO;
+#endif
+
pop3_greeting();
}
/*
* Specify user name (implements POP3 "USER" command)
*/
-void pop3_user(char *argbuf) {
+void pop3_user(char *argbuf)
+{
+ struct CitContext *CCC = CC;
char username[SIZ];
- if (CC->logged_in) {
+ if (CCC->logged_in) {
cprintf("-ERR You are already logged in.\r\n");
return;
}
strcpy(username, argbuf);
striplt(username);
- /* lprintf(CTDL_DEBUG, "Trying <%s>\n", username); */
+ /* POP3_syslog(LOG_DEBUG, "Trying <%s>", username); */
if (CtdlLoginExistingUser(NULL, username) == login_ok) {
cprintf("+OK Password required for %s\r\n", username);
}
/*
* Back end for pop3_grab_mailbox()
*/
-void pop3_add_message(long msgnum, void *userdata) {
+void pop3_add_message(long msgnum, void *userdata)
+{
+ struct CitContext *CCC = CC;
struct MetaData smi;
++POP3->num_msgs;
*/
GetMetaData(&smi, msgnum);
if (smi.meta_rfc822_length <= 0L) {
- CC->redirect_buffer = malloc(SIZ);
- CC->redirect_len = 0;
- CC->redirect_alloc = SIZ;
- CtdlOutputMsg(msgnum, MT_RFC822, HEADERS_ALL, 0, 1, NULL);
- smi.meta_rfc822_length = CC->redirect_len;
- free(CC->redirect_buffer);
- CC->redirect_buffer = NULL;
- CC->redirect_len = 0;
- CC->redirect_alloc = 0;
+ CCC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
+
+ CtdlOutputMsg(msgnum,
+ MT_RFC822,
+ HEADERS_ALL,
+ 0, 1, NULL,
+ SUPPRESS_ENV_TO,
+ NULL, NULL);
+
+ smi.meta_rfc822_length = StrLength(CCC->redirect_buffer);
+ FreeStrBuf(&CCC->redirect_buffer); /* TODO: WHEW, all this for just knowing the length???? */
PutMetaData(&smi);
}
POP3->msgs[POP3->num_msgs-1].rfc822_length = smi.meta_rfc822_length;
* (This should be called only once, by pop3_pass(), and returns the number
* of messages in the inbox, or -1 for error)
*/
-int pop3_grab_mailbox(void) {
- struct visit vbuf;
+int pop3_grab_mailbox(void)
+{
+ struct CitContext *CCC = CC;
+ visit vbuf;
int i;
- if (getroom(&CC->room, MAILROOM) != 0) return(-1);
+ if (CtdlGetRoom(&CCC->room, MAILROOM) != 0) return(-1);
/* Load up the messages */
CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL,
pop3_add_message, NULL);
/* Figure out which are old and which are new */
- CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
+ CtdlGetRelationship(&vbuf, &CCC->user, &CCC->room);
POP3->lastseen = (-1);
if (POP3->num_msgs) for (i=0; i<POP3->num_msgs; ++i) {
if (is_msg_in_sequence_set(vbuf.v_seen,
void pop3_login(void)
{
+ struct CitContext *CCC = CC;
int msgs;
msgs = pop3_grab_mailbox();
if (msgs >= 0) {
cprintf("+OK %s is logged in (%d messages)\r\n",
- CC->user.fullname, msgs);
- lprintf(CTDL_NOTICE, "POP3 authenticated %s\n", CC->user.fullname);
+ CCC->user.fullname, msgs);
+ POP3_syslog(LOG_DEBUG, "POP3 authenticated %s", CCC->user.fullname);
}
else {
cprintf("-ERR Can't open your mailbox\r\n");
}
-void pop3_apop(char *argbuf)
-{
- char username[SIZ];
- char userdigest[MD5_HEXSTRING_SIZE];
- char realdigest[MD5_HEXSTRING_SIZE];
- char *sptr;
-
- if (CC->logged_in)
- {
- cprintf("-ERR You are already logged in; not in the AUTHORIZATION phase.\r\n");
- return;
- }
-
- if ((sptr = strchr(argbuf, ' ')) == NULL)
- {
- cprintf("-ERR Invalid APOP line.\r\n");
- return;
- }
-
- *sptr++ = '\0';
-
- while ((*sptr) && isspace(*sptr))
- sptr++;
-
- strncpy(username, argbuf, sizeof(username)-1);
- username[sizeof(username)-1] = '\0';
-
- memset(userdigest, MD5_HEXSTRING_SIZE, 0);
- strncpy(userdigest, sptr, MD5_HEXSTRING_SIZE-1);
-
- if (CtdlLoginExistingUser(NULL, username) != login_ok)
- {
- cprintf("-ERR No such user.\r\n");
- return;
- }
-
- if (getuser(&CC->user, CC->curr_user))
- {
- cprintf("-ERR No such user.\r\n");
- return;
- }
-
- make_apop_string(CC->user.password, CC->cs_nonce, realdigest, sizeof realdigest);
- if (!strncasecmp(realdigest, userdigest, MD5_HEXSTRING_SIZE-1))
- {
- do_login();
- pop3_login();
- }
- else
- {
- cprintf("-ERR That is NOT the password.\r\n");
- }
-}
-
/*
* Authorize with password (implements POP3 "PASS" command)
void pop3_pass(char *argbuf) {
char password[SIZ];
- strcpy(password, argbuf);
+ safestrncpy(password, argbuf, sizeof password);
striplt(password);
- /* lprintf(CTDL_DEBUG, "Trying <%s>\n", password); */
- if (CtdlTryPassword(password) == pass_ok) {
+ /* POP3_syslog(LOG_DEBUG, "Trying <%s>", password); */
+ if (CtdlTryPassword(password, strlen(password)) == pass_ok) {
pop3_login();
}
else {
}
cprintf("+OK Message %d:\r\n", which_one);
- CtdlOutputMsg(POP3->msgs[which_one - 1].msgnum, MT_RFC822, HEADERS_ALL, 0, 1, NULL);
+ CtdlOutputMsg(POP3->msgs[which_one - 1].msgnum,
+ MT_RFC822, HEADERS_ALL, 0, 1, NULL,
+ (ESC_DOT|SUPPRESS_ENV_TO),
+ NULL, NULL);
cprintf(".\r\n");
}
/*
* TOP command (dumb way of fetching a partial message or headers-only)
*/
-void pop3_top(char *argbuf) {
+void pop3_top(char *argbuf)
+{
+ struct CitContext *CCC = CC;
int which_one;
int lines_requested = 0;
int lines_dumped = 0;
char buf[1024];
- char *msgtext;
- char *ptr;
+ StrBuf *msgtext;
+ const char *ptr;
int in_body = 0;
int done = 0;
return;
}
- CC->redirect_buffer = malloc(SIZ);
- CC->redirect_len = 0;
- CC->redirect_alloc = SIZ;
- CtdlOutputMsg(POP3->msgs[which_one - 1].msgnum,
- MT_RFC822, HEADERS_ALL, 0, 1, NULL);
- msgtext = CC->redirect_buffer;
- CC->redirect_buffer = NULL;
- CC->redirect_len = 0;
- CC->redirect_alloc = 0;
+ CCC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
- cprintf("+OK Message %d:\r\n", which_one);
+ CtdlOutputMsg(POP3->msgs[which_one - 1].msgnum,
+ MT_RFC822,
+ HEADERS_ALL,
+ 0, 1, NULL,
+ SUPPRESS_ENV_TO,
+ NULL, NULL);
- ptr = msgtext;
+ msgtext = CCC->redirect_buffer;
+ CCC->redirect_buffer = NULL;
- while (ptr = memreadline(ptr, buf, (sizeof buf - 2)),
+ cprintf("+OK Message %d:\r\n", which_one);
+
+ ptr = ChrPtr(msgtext);
+ while (ptr = cmemreadline(ptr, buf, (sizeof buf - 2)),
( (*ptr != 0) && (done == 0))) {
strcat(buf, "\r\n");
if (in_body == 1) {
}
if (buf[strlen(buf)-1] != 10) cprintf("\n");
- free(msgtext);
+ FreeStrBuf(&msgtext);
cprintf(".\r\n");
}
/* Perform "UPDATE state" stuff
*/
-void pop3_update(void) {
+void pop3_update(void)
+{
+ struct CitContext *CCC = CC;
int i;
- struct visit vbuf;
+ visit vbuf;
long *deletemsgs = NULL;
int num_deletemsgs = 0;
/* Set last read pointer */
if (POP3->num_msgs > 0) {
- lgetuser(&CC->user, CC->curr_user);
+ CtdlGetUserLock(&CCC->user, CCC->curr_user);
- CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
+ CtdlGetRelationship(&vbuf, &CCC->user, &CCC->room);
snprintf(vbuf.v_seen, sizeof vbuf.v_seen, "*:%ld",
POP3->msgs[POP3->num_msgs-1].msgnum);
- CtdlSetRelationship(&vbuf, &CC->user, &CC->room);
+ CtdlSetRelationship(&vbuf, &CCC->user, &CCC->room);
- lputuser(&CC->user);
+ CtdlPutUserLock(&CCC->user);
}
}
/*
* Main command loop for POP3 sessions.
*/
-void pop3_command_loop(void) {
+void pop3_command_loop(void)
+{
+ struct CitContext *CCC = CC;
char cmdbuf[SIZ];
- time(&CC->lastcmd);
+ time(&CCC->lastcmd);
memset(cmdbuf, 0, sizeof cmdbuf); /* Clear it, just in case */
if (client_getln(cmdbuf, sizeof cmdbuf) < 1) {
- lprintf(CTDL_ERR, "Client disconnected: ending session.\r\n");
- CC->kill_me = 1;
+ POP3M_syslog(LOG_INFO, "POP3 client disconnected: ending session.");
+ CCC->kill_me = KILLME_CLIENT_DISCONNECTED;
return;
}
if (!strncasecmp(cmdbuf, "PASS", 4)) {
- lprintf(CTDL_INFO, "POP3: PASS...\r\n");
+ POP3M_syslog(LOG_DEBUG, "POP3: PASS...");
}
else {
- lprintf(CTDL_INFO, "POP3: %s\r\n", cmdbuf);
+ POP3_syslog(LOG_DEBUG, "POP3: %s", cmdbuf);
}
while (strlen(cmdbuf) < 5) strcat(cmdbuf, " ");
else if (!strncasecmp(cmdbuf, "QUIT", 4)) {
cprintf("+OK Goodbye...\r\n");
pop3_update();
- CC->kill_me = 1;
+ CCC->kill_me = KILLME_CLIENT_LOGGED_OUT;
return;
}
pop3_pass(&cmdbuf[5]);
}
- else if (!strncasecmp(cmdbuf, "APOP", 4))
- {
- pop3_apop(&cmdbuf[5]);
- }
-
#ifdef HAVE_OPENSSL
else if (!strncasecmp(cmdbuf, "STLS", 4)) {
pop3_stls();
}
#endif
- else if (!CC->logged_in) {
+ else if (!CCC->logged_in) {
cprintf("-ERR Not logged in.\r\n");
}
+
+ else if (CCC->nologin) {
+ cprintf("-ERR System busy, try later.\r\n");
+ CCC->kill_me = KILLME_NOLOGIN;
+ }
else if (!strncasecmp(cmdbuf, "LIST", 4)) {
pop3_list(&cmdbuf[5]);
const char *CitadelServicePop3="POP3";
const char *CitadelServicePop3S="POP3S";
+void SetPOP3DebugEnabled(const int n)
+{
+ POP3DebugEnabled = n;
+}
+
CTDL_MODULE_INIT(pop3)
{
- CtdlRegisterServiceHook(config.c_pop3_port,
- NULL,
- pop3_greeting,
- pop3_command_loop,
- NULL,
- CitadelServicePop3);
+ if(!threading)
+ {
+ CtdlRegisterDebugFlagHook(HKEY("pop3srv"), SetPOP3DebugEnabled, &POP3DebugEnabled);
+
+ CtdlRegisterServiceHook(config.c_pop3_port,
+ NULL,
+ pop3_greeting,
+ pop3_command_loop,
+ NULL,
+ CitadelServicePop3);
#ifdef HAVE_OPENSSL
- CtdlRegisterServiceHook(config.c_pop3s_port,
- NULL,
- pop3s_greeting,
- pop3_command_loop,
- NULL,
- CitadelServicePop3S);
+ CtdlRegisterServiceHook(config.c_pop3s_port,
+ NULL,
+ pop3s_greeting,
+ pop3_command_loop,
+ NULL,
+ CitadelServicePop3S);
#endif
- CtdlRegisterSessionHook(pop3_cleanup_function, EVT_STOP);
-
- /* return our Subversion id for the Log */
- return "$Id$";
+ CtdlRegisterSessionHook(pop3_cleanup_function, EVT_STOP, PRIO_STOP + 30);
+ }
+
+ /* return our module name for the log */
+ return "pop3";
}
projects / citadel.git / blobdiff