3 * IMAP server for the Citadel/UX system
4 * Copyright (C) 2000 by Art Cancro and others.
5 * This code is released under the terms of the GNU General Public License.
7 * Current status of standards conformance:
9 * *** ABSOLUTELY NOTHING WORKS ***
21 #include <sys/types.h>
29 #include "sysdep_decls.h"
30 #include "citserver.h"
33 #include "dynloader.h"
40 #include "internet_addressing.h"
41 #include "serv_imap.h"
48 * This cleanup function blows away the temporary memory and files used by
51 void imap_cleanup_function(void) {
53 /* Don't do this stuff if this is not a IMAP session! */
54 if (CC->h_command_function != imap_command_loop) return;
56 lprintf(9, "Performing IMAP cleanup hook\n");
59 lprintf(9, "Finished IMAP cleanup hook\n");
65 * Here's where our IMAP session begins its happy day.
67 void imap_greeting(void) {
69 strcpy(CC->cs_clientname, "IMAP session");
71 CtdlAllocUserData(SYM_IMAP, sizeof(struct citimap));
73 cprintf("* OK %s Citadel/UX IMAP4rev1 server ready\r\n",
79 * implements the LOGIN command (ordinary username/password login)
81 void imap_login(char *tag, char *cmd, char *parms) {
85 extract_token(username, parms, 0, ' ');
86 extract_token(password, parms, 1, ' ');
88 if (CtdlLoginExistingUser(username) == login_ok) {
89 if (CtdlTryPassword(password) == pass_ok) {
90 cprintf("%s OK login successful\r\n", tag);
95 cprintf("%s BAD Login incorrect\r\n", tag);
100 * implements the CAPABILITY command
102 void imap_capability(char *tag, char *cmd, char *parms) {
103 cprintf("* CAPABILITY IMAP4 IMAP4REV1 AUTH=LOGIN\r\n");
104 cprintf("%s OK CAPABILITY completed\r\n", tag);
112 * implements the SELECT command
114 void imap_select(char *tag, char *cmd, char *parms) {
116 char augmented_roomname[256];
120 struct quickroom QRscratch;
123 extract_token(towhere, parms, 0, ' ');
125 /* IMAP uses the reserved name "INBOX" for the user's default incoming
126 * mail folder. Convert this to Citadel's reserved name "_MAIL_".
128 if (!strcasecmp(towhere, "INBOX"))
129 strcpy(towhere, MAILROOM);
131 /* First try a regular match */
132 c = getroom(&QRscratch, towhere);
134 /* Then try a mailbox name match */
136 MailboxName(augmented_roomname, &CC->usersupp, towhere);
137 c = getroom(&QRscratch, augmented_roomname);
139 strcpy(towhere, augmented_roomname);
142 /* If the room exists, check security/access */
144 /* See if there is an existing user/room relationship */
145 ra = CtdlRoomAccess(&QRscratch, &CC->usersupp);
147 /* normal clients have to pass through security */
152 /* Fail here if no such room */
154 cprintf("%s NO ... no such room, or access denied\r\n", tag);
160 * usergoto() formally takes us to the desired room, happily returning
161 * the number of messages and number of new messages.
163 usergoto(QRscratch.QRname, 0, &msgs, &new);
165 cprintf("* %d EXISTS\r\n", msgs);
166 cprintf("* %d RECENT\r\n", new);
167 cprintf("* OK [UIDVALIDITY 0] UIDs valid\r\n");
168 cprintf("%s OK [FIXME] SELECT completed\r\n", tag);
173 * Main command loop for IMAP sessions.
175 void imap_command_loop(void) {
181 memset(cmdbuf, 0, sizeof cmdbuf); /* Clear it, just in case */
182 if (client_gets(cmdbuf) < 1) {
183 lprintf(3, "IMAP socket is broken. Ending session.\r\n");
188 lprintf(5, "citserver[%3d]: %s\r\n", CC->cs_pid, cmdbuf);
189 while (strlen(cmdbuf) < 5) strcat(cmdbuf, " ");
192 /* strip off l/t whitespace and CRLF */
193 if (cmdbuf[strlen(cmdbuf)-1]=='\n') cmdbuf[strlen(cmdbuf)-1]=0;
194 if (cmdbuf[strlen(cmdbuf)-1]=='\r') cmdbuf[strlen(cmdbuf)-1]=0;
198 extract_token(tag, cmdbuf, 0, ' ');
199 extract_token(cmd, cmdbuf, 1, ' ');
200 remove_token(cmdbuf, 0, ' ');
201 remove_token(cmdbuf, 0, ' ');
202 lprintf(9, "tag=<%s> cmd=<%s> parms=<%s>\n", tag, cmd, cmdbuf);
204 /* commands which may be executed in any state */
206 if (!strcasecmp(cmd, "NOOP")) {
207 cprintf("%s OK This command successfully did nothing.\r\n",
211 else if (!strcasecmp(cmd, "LOGOUT")) {
212 cprintf("* BYE %s logging out\r\n", config.c_fqdn);
213 cprintf("%s OK thank you for using Citadel IMAP\r\n", tag);
218 else if (!strcasecmp(cmd, "LOGIN")) {
219 imap_login(tag, cmd, cmdbuf);
222 else if (!strcasecmp(cmd, "CAPABILITY")) {
223 imap_capability(tag, cmd, cmdbuf);
226 else if (!CC->logged_in) {
227 cprintf("%s BAD Not logged in.\r\n", tag);
230 /* commands requiring the client to be logged in */
232 else if (!strcasecmp(cmd, "SELECT")) {
233 imap_select(tag, cmd, cmdbuf);
236 /* end of commands */
239 cprintf("%s BAD command unrecognized\r\n", tag);
246 char *Dynamic_Module_Init(void)
248 SYM_IMAP = CtdlGetDynamicSymbol();
249 CtdlRegisterServiceHook(2243, /* FIXME put in config setup */
253 CtdlRegisterSessionHook(imap_cleanup_function, EVT_STOP);