Viewing file:  imapd.c (140.78 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* ========================================================================
* Copyright 1988-2008 University of Washington
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
*
* ========================================================================
*/
/*
* Program: IMAP4rev1 server
*
* Author: Mark Crispin
* UW Technology
* University of Washington
* Seattle, WA 98195
* Internet: MRC@Washington.EDU
*
* Date: 5 November 1990
* Last Edited: 3 March 2008
*/
/* Parameter files */
#include <stdio.h>
#include <ctype.h>
#include <errno.h>
extern int errno; /* just in case */
#include <signal.h>
#include <setjmp.h>
#include <time.h>
#include "c-client.h"
#include "newsrc.h"
#include <sys/stat.h>
#define CRLF PSOUT ("\015\012") /* primary output terpri */
/* Timeouts and timers */
#define MINUTES *60
#define LOGINTIMEOUT 3 MINUTES /* not logged in autologout timer */
#define TIMEOUT 30 MINUTES /* RFC 3501 minimum autologout timer */
#define INPUTTIMEOUT 5 MINUTES /* timer for additional command input */
#define ALERTTIMER 1 MINUTES /* alert check timer */
#define SHUTDOWNTIMER 1 MINUTES /* shutdown dally timer */
#define IDLETIMER 1 MINUTES /* IDLE command poll timer */
#define CHECKTIMER 15 MINUTES /* IDLE command last checkpoint timer */
#define LITSTKLEN 20 /* length of literal stack */
#define MAXCLIENTLIT 10000 /* maximum non-APPEND client literal size
* must be smaller than 4294967295
*/
#define MAXAPPENDTXT 0x40000000 /* maximum APPEND literal size
* must be smaller than 4294967295
*/
#define CMDLEN 65536 /* size of command buffer */
/* Server states */
#define LOGIN 0
#define SELECT 1
#define OPEN 2
#define LOGOUT 3
/* Body text fetching */
typedef struct text_args {
char *section; /* body section */
STRINGLIST *lines; /* header lines */
unsigned long first; /* first octet to fetch */
unsigned long last; /* number of octets to fetch */
long flags; /* fetch flags */
long binary; /* binary flags */
} TEXTARGS;
#define FTB_BINARY 0x1 /* fetch as binary */
#define FTB_SIZE 0x2 /* fetch size only */
/* Append data */
typedef struct append_data {
unsigned char *arg; /* append argument pointer */
char *flags; /* message flags */
char *date; /* message date */
char *msg; /* message text */
STRING *message; /* message stringstruct */
} APPENDDATA;
/* Message pointer */
typedef struct msg_data {
MAILSTREAM *stream; /* stream */
unsigned long msgno; /* message number */
char *flags; /* current flags */
char *date; /* current date */
STRING *message; /* stringstruct of message */
} MSGDATA;
/* Function prototypes */
int main (int argc,char *argv[]);
void ping_mailbox (unsigned long uid);
time_t palert (char *file,time_t oldtime);
void msg_string_init (STRING *s,void *data,unsigned long size);
char msg_string_next (STRING *s);
void msg_string_setpos (STRING *s,unsigned long i);
void new_flags (MAILSTREAM *stream);
void settimeout (unsigned int i);
void clkint (void);
void kodint (void);
void hupint (void);
void trmint (void);
void staint (void);
char *sout (char *s,char *t);
char *nout (char *s,unsigned long n,unsigned long base);
void slurp (char *s,int n,unsigned long timeout);
void inliteral (char *s,unsigned long n);
unsigned char *flush (void);
void ioerror (FILE *f,char *reason);
unsigned char *parse_astring (unsigned char **arg,unsigned long *i,
unsigned char *del);
unsigned char *snarf (unsigned char **arg);
unsigned char *snarf_base64 (unsigned char **arg);
unsigned char *snarf_list (unsigned char **arg);
STRINGLIST *parse_stringlist (unsigned char **s,int *list);
unsigned long uidmax (MAILSTREAM *stream);
long parse_criteria (SEARCHPGM *pgm,unsigned char **arg,unsigned long maxmsg,
unsigned long maxuid,unsigned long depth);
long parse_criterion (SEARCHPGM *pgm,unsigned char **arg,unsigned long msgmsg,
unsigned long maxuid,unsigned long depth);
long crit_date (unsigned short *date,unsigned char **arg);
long crit_date_work (unsigned short *date,unsigned char **arg);
long crit_set (SEARCHSET **set,unsigned char **arg,unsigned long maxima);
long crit_number (unsigned long *number,unsigned char **arg);
long crit_string (STRINGLIST **string,unsigned char **arg);
void fetch (char *t,unsigned long uid);
typedef void (*fetchfn_t) (unsigned long i,void *args);
void fetch_work (char *t,unsigned long uid,fetchfn_t f[],void *fa[]);
void fetch_bodystructure (unsigned long i,void *args);
void fetch_body (unsigned long i,void *args);
void fetch_body_part_mime (unsigned long i,void *args);
void fetch_body_part_contents (unsigned long i,void *args);
void fetch_body_part_binary (unsigned long i,void *args);
void fetch_body_part_header (unsigned long i,void *args);
void fetch_body_part_text (unsigned long i,void *args);
void remember (unsigned long uid,char *id,SIZEDTEXT *st);
void fetch_envelope (unsigned long i,void *args);
void fetch_encoding (unsigned long i,void *args);
void changed_flags (unsigned long i,int f);
void fetch_flags (unsigned long i,void *args);
void put_flag (int *c,char *s);
void fetch_internaldate (unsigned long i,void *args);
void fetch_uid (unsigned long i,void *args);
void fetch_rfc822 (unsigned long i,void *args);
void fetch_rfc822_header (unsigned long i,void *args);
void fetch_rfc822_size (unsigned long i,void *args);
void fetch_rfc822_text (unsigned long i,void *args);
void penv (ENVELOPE *env);
void pbodystructure (BODY *body);
void pbody (BODY *body);
void pparam (PARAMETER *param);
void paddr (ADDRESS *a);
void pset (SEARCHSET **set);
void pnum (unsigned long i);
void pstring (char *s);
void pnstring (char *s);
void pastring (char *s);
void psizedquoted (SIZEDTEXT *s);
void psizedliteral (SIZEDTEXT *s,STRING *st);
void psizedstring (SIZEDTEXT *s,STRING *st);
void psizedastring (SIZEDTEXT *s);
void pastringlist (STRINGLIST *s);
void pnstringorlist (STRINGLIST *s);
void pbodypartstring (unsigned long msgno,char *id,SIZEDTEXT *st,STRING *bs,
TEXTARGS *ta);
void ptext (SIZEDTEXT *s,STRING *st);
void pthread (THREADNODE *thr);
void pcapability (long flag);
long nameok (char *ref,char *name);
char *bboardname (char *cmd,char *name);
long isnewsproxy (char *name);
long newsproxypattern (char *ref,char *pat,char *pattern,long flag);
char *imap_responder (void *challenge,unsigned long clen,unsigned long *rlen);
long proxycopy (MAILSTREAM *stream,char *sequence,char *mailbox,long options);
long proxy_append (MAILSTREAM *stream,void *data,char **flags,char **date,
STRING **message);
long append_msg (MAILSTREAM *stream,void *data,char **flags,char **date,
STRING **message);
void copyuid (MAILSTREAM *stream,char *mailbox,unsigned long uidvalidity,
SEARCHSET *sourceset,SEARCHSET *destset);
void appenduid (char *mailbox,unsigned long uidvalidity,SEARCHSET *set);
char *referral (MAILSTREAM *stream,char *url,long code);
void mm_list_work (char *what,int delimiter,char *name,long attributes);
char *lasterror (void);
/* Global storage */
char *version = "404"; /* edit number of this server */
char *logout = "Logout"; /* syslogreason for logout */
char *goodbye = NIL; /* bye reason */
time_t alerttime = 0; /* time of last alert */
time_t sysalerttime = 0; /* time of last system alert */
time_t useralerttime = 0; /* time of last user alert */
time_t lastcheck = 0; /* time of last checkpoint */
time_t shutdowntime = 0; /* time of last shutdown */
int state = LOGIN; /* server state */
int cancelled = NIL; /* authenticate cancelled */
int trycreate = 0; /* saw a trycreate */
int finding = NIL; /* doing old FIND command */
int anonymous = 0; /* non-zero if anonymous */
int critical = NIL; /* non-zero if in critical code */
int quell_events = NIL; /* non-zero if in FETCH response */
int existsquelled = NIL; /* non-zero if an EXISTS was quelled */
int proxylist = NIL; /* doing a proxy LIST */
MAILSTREAM *stream = NIL; /* mailbox stream */
DRIVER *curdriver = NIL; /* note current driver */
MAILSTREAM *tstream = NIL; /* temporary mailbox stream */
unsigned int nflags = 0; /* current number of keywords */
unsigned long nmsgs =0xffffffff;/* last reported # of messages and recent */
unsigned long recent = 0xffffffff;
char *nntpproxy = NIL; /* NNTP proxy name */
unsigned char *user = NIL; /* user name */
unsigned char *pass = NIL; /* password */
unsigned char *initial = NIL; /* initial response */
unsigned char cmdbuf[CMDLEN]; /* command buffer */
char *status = "starting up"; /* server status */
char *tag; /* tag portion of command */
unsigned char *cmd; /* command portion of command */
unsigned char *arg; /* pointer to current argument of command */
char *lstwrn = NIL; /* last warning message from c-client */
char *lsterr = NIL; /* last error message from c-client */
char *lstref = NIL; /* last referral from c-client */
char *response = NIL; /* command response */
struct {
unsigned long size; /* size of current LITERAL+ */
unsigned int ok : 1; /* LITERAL+ in effect */
} litplus;
int litsp = 0; /* literal stack pointer */
char *litstk[LITSTKLEN]; /* stack to hold literals */
unsigned long uidvalidity = 0; /* last reported UID validity */
unsigned long lastuid = 0; /* last fetched uid */
char *lastid = NIL; /* last fetched body id for this message */
char *lastsel = NIL; /* last selected mailbox name */
SIZEDTEXT lastst = {NIL,0}; /* last sizedtext */
unsigned long cauidvalidity = 0;/* UIDVALIDITY for COPYUID/APPENDUID */
SEARCHSET *csset = NIL; /* COPYUID source set */
SEARCHSET *caset = NIL; /* COPYUID/APPENDUID destination set */
jmp_buf jmpenv; /* stack context for setjmp */
/* Response texts which appear in multiple places */
char *win = "%.80s OK ";
char *rowin = "%.80s OK [READ-ONLY] %.80s completed\015\012";
char *rwwin = "%.80s OK [READ-WRITE] %.80s completed\015\012";
char *lose = "%.80s NO ";
char *logwin = "%.80s OK [";
char *losetry = "%.80s NO [TRYCREATE] %.80s failed: %.900s\015\012";
char *loseunknowncte = "%.80s NO [UNKNOWN-CTE] %.80s failed: %.900s\015\012";
char *badcmd = "%.80s BAD Command unrecognized: %.80s\015\012";
char *misarg = "%.80s BAD Missing or invalid argument to %.80s\015\012";
char *badarg = "%.80s BAD Argument given to %.80s when none expected\015\012";
char *badseq = "%.80s BAD Bogus sequence in %.80s: %.80s\015\012";
char *badatt = "%.80s BAD Bogus attribute list in %.80s\015\012";
char *badbin = "%.80s BAD Syntax error in binary specifier\015\012";
/* Message string driver for message stringstructs */
STRINGDRIVER msg_string = {
msg_string_init, /* initialize string structure */
msg_string_next, /* get next byte in string structure */
msg_string_setpos /* set position in string structure */
};
/* Main program */
int main (int argc,char *argv[])
{
unsigned long i,uid;
long f;
unsigned char *s,*t,*u,*v,tmp[MAILTMPLEN];
struct stat sbuf;
logouthook_t lgoh;
int ret = 0;
time_t autologouttime = 0;
char *pgmname;
/* if case we get borked immediately */
if (setjmp (jmpenv)) _exit (1);
pgmname = (argc && argv[0]) ?
(((s = strrchr (argv[0],'/')) || (s = strrchr (argv[0],'\\'))) ?
(char *) s+1 : argv[0]) : "imapd";
/* set service name before linkage */
mail_parameters (NIL,SET_SERVICENAME,(void *) "imap");
#include "linkage.c"
rfc822_date (tmp); /* get date/time at startup */
/* initialize server */
server_init (pgmname,"imap","imaps",clkint,kodint,hupint,trmint,staint);
/* forbid automatic untagged expunge */
mail_parameters (NIL,SET_EXPUNGEATPING,NIL);
/* arm proxy copy callback */
mail_parameters (NIL,SET_MAILPROXYCOPY,(void *) proxycopy);
/* arm referral callback */
mail_parameters (NIL,SET_IMAPREFERRAL,(void *) referral);
/* arm COPYUID callback */
mail_parameters (NIL,SET_COPYUID,(void *) copyuid);
/* arm APPENDUID callback */
mail_parameters (NIL,SET_APPENDUID,(void *) appenduid);
if (stat (SHUTDOWNFILE,&sbuf)) {
char proxy[MAILTMPLEN];
FILE *nntp = fopen (NNTPFILE,"r");
if (nntp) { /* desire NNTP proxy? */
if (fgets (proxy,MAILTMPLEN,nntp)) {
/* remove newline and set NNTP proxy */
if (s = strchr (proxy,'\n')) *s = '\0';
nntpproxy = cpystr (proxy);
/* disable the news driver */
mail_parameters (NIL,DISABLE_DRIVER,"news");
}
fclose (nntp); /* done reading proxy name */
}
s = myusername_full (&i); /* get user name and flags */
switch (i) {
case MU_NOTLOGGEDIN:
PSOUT ("* OK ["); /* not logged in, ordinary startup */
pcapability (-1);
break;
case MU_ANONYMOUS:
anonymous = T; /* anonymous user, fall into default */
s = "ANONYMOUS";
case MU_LOGGEDIN:
PSOUT ("* PREAUTH ["); /* already logged in, pre-authorized */
pcapability (1);
user = cpystr (s); /* copy user name */
pass = cpystr ("*"); /* set fake password */
state = SELECT; /* enter select state */
break;
default:
fatal ("Unknown state from myusername_full()");
}
PSOUT ("] ");
if (user) { /* preauthenticated as someone? */
PSOUT ("Pre-authenticated user ");
PSOUT (user);
PBOUT (' ');
}
}
else { /* login disabled */
PSOUT ("* BYE Service not available ");
state = LOGOUT;
}
PSOUT (tcp_serverhost ());
PSOUT (" IMAP4rev1 ");
PSOUT (CCLIENTVERSION);
PBOUT ('.');
PSOUT (version);
PSOUT (" at ");
PSOUT (tmp);
CRLF;
PFLUSH (); /* dump output buffer */
switch (state) { /* do this after the banner */
case LOGIN:
autologouttime = time (0) + LOGINTIMEOUT;
break;
case SELECT:
syslog (LOG_INFO,"Preauthenticated user=%.80s host=%.80s",
user,tcp_clienthost ());
break;
}
if (setjmp (jmpenv)) { /* die if a signal handler say so */
/* in case we get borked now */
if (setjmp (jmpenv)) _exit (1);
/* need to close stream gracefully? */
if (stream && !stream->lock && (stream->dtb->flags & DR_XPOINT))
stream = mail_close (stream);
ret = 1; /* set exit status */
}
else while (state != LOGOUT) {/* command processing loop */
slurp (cmdbuf,CMDLEN,TIMEOUT);
/* no more last error or literal */
if (lstwrn) fs_give ((void **) &lstwrn);
if (lsterr) fs_give ((void **) &lsterr);
if (lstref) fs_give ((void **) &lstref);
while (litsp) fs_give ((void **) &litstk[--litsp]);
/* find end of line */
if (!strchr (cmdbuf,'\012')) {
if (t = strchr (cmdbuf,' ')) *t = '\0';
if ((t - cmdbuf) > 100) t = NIL;
flush (); /* flush excess */
if (state == LOGIN) /* error if NLI */
syslog (LOG_INFO,"Line too long before authentication host=%.80s",
tcp_clienthost ());
sprintf (tmp,response,t ? (char *) cmdbuf : "*");
PSOUT (tmp);
}
else if (!(tag = strtok (cmdbuf," \015\012"))) {
if (state == LOGIN) /* error if NLI */
syslog (LOG_INFO,"Null command before authentication host=%.80s",
tcp_clienthost ());
PSOUT ("* BAD Null command\015\012");
}
else if (strlen (tag) > 50) PSOUT ("* BAD Excessively long tag\015\012");
else if (!(s = strtok (NIL," \015\012"))) {
if (state == LOGIN) /* error if NLI */
syslog (LOG_INFO,"Missing command before authentication host=%.80s",
tcp_clienthost ());
PSOUT (tag);
PSOUT (" BAD Missing command\015\012");
}
else { /* parse command */
response = win; /* set default response */
finding = NIL; /* no longer FINDing */
ucase (s); /* canonicalize command case */
/* UID command? */
if (!strcmp (s,"UID") && strtok (NIL," \015\012")) {
uid = T; /* a UID command */
s[3] = ' '; /* restore the space delimiter */
ucase (s); /* make sure command all uppercase */
}
else uid = NIL; /* not a UID command */
/* flush previous saved command */
if (cmd) fs_give ((void **) &cmd);
cmd = cpystr (s); /* save current command */
/* snarf argument, see if possible litplus */
if ((arg = strtok (NIL,"\015\012")) && ((i = strlen (arg)) > 3) &&
(arg[i - 1] == '}') && (arg[i - 2] == '+') && isdigit (arg[i - 3])) {
/* back over possible count */
for (i -= 4; i && isdigit (arg[i]); i--);
if (arg[i] == '{') { /* found a literal? */
litplus.ok = T; /* yes, note LITERAL+ in effect, set size */
litplus.size = strtoul (arg + i + 1,NIL,10);
}
}
/* these commands always valid */
if (!strcmp (cmd,"NOOP")) {
if (arg) response = badarg;
else if (stream) /* allow untagged EXPUNGE */
mail_parameters (stream,SET_ONETIMEEXPUNGEATPING,(void *) stream);
}
else if (!strcmp (cmd,"LOGOUT")) {
if (arg) response = badarg;
else { /* time to say farewell */
server_init (NIL,NIL,NIL,SIG_IGN,SIG_IGN,SIG_IGN,SIG_IGN,SIG_IGN);
if (lastsel) fs_give ((void **) &lastsel);
if (state == OPEN) stream = mail_close (stream);
state = LOGOUT;
PSOUT ("* BYE ");
PSOUT (mylocalhost ());
PSOUT (" IMAP4rev1 server terminating connection\015\012");
}
}
else if (!strcmp (cmd,"CAPABILITY")) {
if (arg) response = badarg;
else {
PSOUT ("* ");
pcapability (0); /* print capabilities */
CRLF;
}
if (stream) /* allow untagged EXPUNGE */
mail_parameters (stream,SET_ONETIMEEXPUNGEATPING,(void *) stream);
}
#ifdef NETSCAPE_BRAIN_DAMAGE
else if (!strcmp (cmd,"NETSCAPE")) {
PSOUT ("* OK [NETSCAPE]\015\012* VERSION 1.0 UNIX\015\012* ACCOUNT-URL \"");
PSOUT (NETSCAPE_BRAIN_DAMAGE);
PBOUT ('"');
CRLF;
}
#endif
else switch (state) { /* dispatch depending upon state */
case LOGIN: /* waiting to get logged in */
/* new style authentication */
if (!strcmp (cmd,"AUTHENTICATE")) {
if (user) fs_give ((void **) &user);
if (pass) fs_give ((void **) &pass);
initial = NIL; /* no initial argument */
cancelled = NIL; /* not cancelled */
/* mandatory first argument */
if (!(s = snarf (&arg))) response = misarg;
else if (arg && !(initial = snarf_base64 (&arg)))
response = misarg; /* optional second argument */
else if (arg) response = badarg;
else if (!strcmp (ucase (s),"ANONYMOUS") && !stat (ANOFILE,&sbuf)) {
if (!(s = imap_responder ("",0,NIL)))
response ="%.80s BAD AUTHENTICATE ANONYMOUS cancelled\015\012";
else if (anonymous_login (argc,argv)) {
anonymous = T; /* note we are anonymous */
user = cpystr ("ANONYMOUS");
pass = cpystr ("*");
state = SELECT; /* make select */
alerttime = 0; /* force alert */
response = logwin;/* return logged-in capabilities */
syslog (LOG_INFO,"Authenticated anonymous=%.80s host=%.80s",s,
tcp_clienthost ());
fs_give ((void **) &s);
}
else response ="%.80s NO AUTHENTICATE ANONYMOUS failed\015\012";
}
else if (user = cpystr (mail_auth (s,imap_responder,argc,argv))) {
pass = cpystr ("*");
state = SELECT; /* make select */
alerttime = 0; /* force alert */
response = logwin; /* return logged-in capabilities */
syslog (LOG_INFO,"Authenticated user=%.80s host=%.80s mech=%.80s",
user,tcp_clienthost (),s);
}
else {
AUTHENTICATOR *auth = mail_lookup_auth (1);
char *msg = (char *) fs_get (strlen (cmd) + strlen (s) + 2);
sprintf (msg,"%s %s",cmd,s);
fs_give ((void **) &cmd);
cmd = msg;
for (i = !mail_parameters (NIL,GET_DISABLEPLAINTEXT,NIL);
auth && compare_cstring (s,auth->name); auth = auth->next);
/* Failed authentication when hidden looks like invalid command.
* This is intentional but confused me when I was debugging.
*/
if (auth && auth->server && !(auth->flags & AU_DISABLE) &&
!(auth->flags & AU_HIDE) && (i || (auth->flags & AU_SECURE))) {
response = lose;
if (cancelled) {
if (lsterr) fs_give ((void **) &lsterr);
lsterr = cpystr ("cancelled by user");
}
if (!lsterr) /* catch-all */
lsterr = cpystr ("Invalid authentication credentials");
syslog (LOG_INFO,"AUTHENTICATE %.80s failure host=%.80s",s,
tcp_clienthost ());
}
else {
response = badcmd;
syslog (LOG_INFO,"AUTHENTICATE %.80s invalid host=%.80s",s,
tcp_clienthost ());
}
}
}
/* plaintext login with password */
else if (!strcmp (cmd,"LOGIN")) {
if (user) fs_give ((void **) &user);
if (pass) fs_give ((void **) &pass);
/* two arguments */
if (!((user = cpystr (snarf (&arg))) &&
(pass = cpystr (snarf (&arg))))) response = misarg;
else if (arg) response = badarg;
/* see if we allow anonymous */
else if (!compare_cstring (user,"ANONYMOUS") &&
!stat (ANOFILE,&sbuf) && anonymous_login (argc,argv)) {
anonymous = T; /* note we are anonymous */
ucase (user); /* make all uppercase for consistency */
state = SELECT; /* make select */
alerttime = 0; /* force alert */
response = logwin; /* return logged-in capabilities */
syslog (LOG_INFO,"Login anonymous=%.80s host=%.80s",pass,
tcp_clienthost ());
}
else { /* delimit user from possible admin */
if (s = strchr (user,'*')) *s++ ='\0';
/* see if username and password are OK */
if (server_login (user,pass,s,argc,argv)) {
state = SELECT; /* make select */
alerttime = 0; /* force alert */
response = logwin;/* return logged-in capabilities */
syslog (LOG_INFO,"Login user=%.80s host=%.80s",user,
tcp_clienthost ());
}
else {
response = lose;
if (!lsterr) lsterr = cpystr ("Invalid login credentials");
}
}
}
/* start TLS security */
else if (!strcmp (cmd,"STARTTLS")) {
if (arg) response = badarg;
else if (lsterr = ssl_start_tls (pgmname)) response = lose;
}
else response = badcmd;
break;
case OPEN: /* valid only when mailbox open */
/* fetch mailbox attributes */
if (!strcmp (cmd,"FETCH") || !strcmp (cmd,"UID FETCH")) {
if (!(arg && (s = strtok (arg," ")) && (t = strtok(NIL,"\015\012"))))
response = misarg;
else if (uid ? mail_uid_sequence (stream,s) :
mail_sequence (stream,s)) fetch (t,uid);
else response = badseq;
}
/* store mailbox attributes */
else if (!strcmp (cmd,"STORE") || !strcmp (cmd,"UID STORE")) {
/* must have three arguments */
if (!(arg && (s = strtok (arg," ")) && (v = strtok (NIL," ")) &&
(t = strtok (NIL,"\015\012")))) response = misarg;
else if (!(uid ? mail_uid_sequence (stream,s) :
mail_sequence (stream,s))) response = badseq;
else {
f = ST_SET | (uid ? ST_UID : NIL)|((v[5]&&v[6]) ? ST_SILENT : NIL);
if (!strcmp (ucase (v),"FLAGS") || !strcmp (v,"FLAGS.SILENT")) {
strcpy (tmp,"\\Answered \\Flagged \\Deleted \\Draft \\Seen");
for (i = 0, u = tmp;
(i < NUSERFLAGS) && (v = stream->user_flags[i]); i++)
if (strlen (v) <
((size_t) (MAILTMPLEN - ((u += strlen (u)) + 2 - tmp)))) {
*u++ = ' '; /* write next flag */
strcpy (u,v);
}
mail_flag (stream,s,tmp,f & ~ST_SET);
}
else if (!strcmp (v,"-FLAGS") || !strcmp (v,"-FLAGS.SILENT"))
f &= ~ST_SET; /* clear flags */
else if (strcmp (v,"+FLAGS") && strcmp (v,"+FLAGS.SILENT")) {
response = badatt;
break;
}
/* find last keyword */
for (i = 0; (i < NUSERFLAGS) && stream->user_flags[i]; i++);
mail_flag (stream,s,t,f);
/* any new keywords appeared? */
if (i < NUSERFLAGS && stream->user_flags[i]) new_flags (stream);
/* return flags if silence not wanted */
if (uid ? mail_uid_sequence (stream,s) : mail_sequence (stream,s))
for (i = 1; i <= nmsgs; i++) if (mail_elt(stream,i)->sequence)
mail_elt (stream,i)->spare2 = (f & ST_SILENT) ? NIL : T;
}
}
/* check for new mail */
else if (!strcmp (cmd,"CHECK")) {
/* no arguments */
if (arg) response = badarg;
else if (!anonymous) {
mail_check (stream);
/* remember last check time */
lastcheck = time (0);
}
}
/* expunge deleted messages */
else if (!(anonymous || (strcmp (cmd,"EXPUNGE") &&
strcmp (cmd,"UID EXPUNGE")))) {
if (uid && !arg) response = misarg;
else if (!uid && arg) response = badarg;
else { /* expunge deleted or specified UIDs */
mail_expunge_full (stream,arg,arg ? EX_UID : NIL);
/* remember last checkpoint */
lastcheck = time (0);
}
}
/* close mailbox */
else if (!strcmp (cmd,"CLOSE") || !strcmp (cmd,"UNSELECT")) {
/* no arguments */
if (arg) response = badarg;
else {
/* no last uid */
uidvalidity = lastuid = 0;
if (lastsel) fs_give ((void **) &lastsel);
if (lastid) fs_give ((void **) &lastid);
if (lastst.data) fs_give ((void **) &lastst.data);
stream = mail_close_full (stream,((*cmd == 'C') && !anonymous) ?
CL_EXPUNGE : NIL);
state = SELECT; /* no longer opened */
lastcheck = 0; /* no last checkpoint */
}
}
else if (!anonymous && /* copy message(s) */
(!strcmp (cmd,"COPY") || !strcmp (cmd,"UID COPY"))) {
trycreate = NIL; /* no trycreate status */
if (!(arg && (s = strtok (arg," ")) && (arg = strtok(NIL,"\015\012"))
&& (t = snarf (&arg)))) response = misarg;
else if (arg) response = badarg;
else if (!nmsgs) {
response = lose;
if (!lsterr) lsterr = cpystr ("Mailbox is empty");
}
else if (!(uid ? mail_uid_sequence (stream,s) :
mail_sequence (stream,s))) response = badseq;
/* try copy */
else if (!mail_copy_full (stream,s,t,uid ? CP_UID : NIL)) {
response = trycreate ? losetry : lose;
if (!lsterr) lsterr = cpystr ("No such destination mailbox");
}
}
/* sort mailbox */
else if (!strcmp (cmd,"SORT") || !strcmp (cmd,"UID SORT")) {
/* must have four arguments */
if (!(arg && (*arg == '(') && (t = strchr (s = arg + 1,')')) &&
(t[1] == ' ') && (*(arg = t + 2)))) response = misarg;
else { /* read criteria */
SEARCHPGM *spg = NIL;
char *cs = NIL;
SORTPGM *pgm = NIL,*pg = NIL;
unsigned long *slst,*sl;
*t = NIL; /* tie off criteria list */
if (!(s = strtok (ucase (s)," "))) response = badatt;
else {
do { /* parse sort attributes */
if (pg) pg = pg->next = mail_newsortpgm ();
else pgm = pg = mail_newsortpgm ();
if (!strcmp (s,"REVERSE")) {
pg->reverse = T;
if (!(s = strtok (NIL," "))) {
s = ""; /* end of attributes */
break;
}
}
if (!strcmp (s,"DATE")) pg->function = SORTDATE;
else if (!strcmp (s,"ARRIVAL")) pg->function = SORTARRIVAL;
else if (!strcmp (s,"FROM")) pg->function = SORTFROM;
else if (!strcmp (s,"SUBJECT")) pg->function = SORTSUBJECT;
else if (!strcmp (s,"TO")) pg->function = SORTTO;
else if (!strcmp (s,"CC")) pg->function = SORTCC;
else if (!strcmp (s,"SIZE")) pg->function = SORTSIZE;
else break;
} while (s = strtok (NIL," "));
/* bad SORT attribute */
if (s) response = badatt;
/* get charset and search criteria */
else if (!((t = snarf (&arg)) && (cs = cpystr (t)) && arg &&
*arg)) response = misarg;
/* parse search criteria */
else if (!parse_criteria (spg = mail_newsearchpgm (),&arg,nmsgs,
uidmax (stream),0)) response = badatt;
else if (arg && *arg) response = badarg;
else if (slst = mail_sort (stream,cs,spg,pgm,uid ? SE_UID:NIL)) {
PSOUT ("* SORT");
for (sl = slst; *sl; sl++) {
PBOUT (' ');
pnum (*sl);
}
CRLF;
fs_give ((void **) &slst);
}
}
if (pgm) mail_free_sortpgm (&pgm);
if (spg) mail_free_searchpgm (&spg);
if (cs) fs_give ((void **) &cs);
}
}
/* thread mailbox */
else if (!strcmp (cmd,"THREAD") || !strcmp (cmd,"UID THREAD")) {
THREADNODE *thr;
SEARCHPGM *spg = NIL;
char *cs = NIL;
/* must have four arguments */
if (!(arg && (s = strtok (arg," ")) && (cs = strtok (NIL," ")) &&
(cs = cpystr (cs)) && (arg = strtok (NIL,"\015\012"))))
response = misarg;
else if (!parse_criteria (spg = mail_newsearchpgm (),&arg,nmsgs,
uidmax (stream),0)) response = badatt;
else if (arg && *arg) response = badarg;
else {
if (thr = mail_thread (stream,s,cs,spg,uid ? SE_UID : NIL)) {
PSOUT ("* THREAD ");
pthread (thr);
mail_free_threadnode (&thr);
}
else PSOUT ("* THREAD");
CRLF;
}
if (spg) mail_free_searchpgm (&spg);
if (cs) fs_give ((void **) &cs);
}
/* search mailbox */
else if (!strcmp (cmd,"SEARCH") || !strcmp (cmd,"UID SEARCH")) {
int retval = NIL;
char *charset = NIL;
SEARCHPGM *pgm;
response = misarg; /* assume failure */
if (!arg) break; /* one or more arguments required */
if (((arg[0] == 'R') || (arg[0] == 'r')) &&
((arg[1] == 'E') || (arg[1] == 'e')) &&
((arg[2] == 'T') || (arg[2] == 't')) &&
((arg[3] == 'U') || (arg[3] == 'u')) &&
((arg[4] == 'R') || (arg[4] == 'r')) &&
((arg[5] == 'N') || (arg[5] == 'n')) &&
(arg[6] == ' ') && (arg[7] == '(')) {
retval = 0x4000; /* return is specified */
for (arg += 8; *arg && (*arg != ')'); ) {
if (((arg[0] == 'M') || (arg[0] == 'm')) &&
((arg[1] == 'I') || (arg[1] == 'i')) &&
((arg[2] == 'N') || (arg[2] == 'n')) &&
((arg[3] == ' ') || (arg[3] == ')'))) {
retval |= 0x1;
arg += 3;
}
else if (((arg[0] == 'M') || (arg[0] == 'm')) &&
((arg[1] == 'A') || (arg[1] == 'a')) &&
((arg[2] == 'X') || (arg[2] == 'x')) &&
((arg[3] == ' ') || (arg[3] == ')'))) {
retval |= 0x2;
arg += 3;
}
else if (((arg[0] == 'A') || (arg[0] == 'a')) &&
((arg[1] == 'L') || (arg[1] == 'l')) &&
((arg[2] == 'L') || (arg[2] == 'l')) &&
((arg[3] == ' ') || (arg[3] == ')'))) {
retval |= 0x4;
arg += 3;
}
else if (((arg[0] == 'C') || (arg[0] == 'c')) &&
((arg[1] == 'O') || (arg[1] == 'o')) &&
((arg[2] == 'U') || (arg[2] == 'u')) &&
((arg[3] == 'N') || (arg[3] == 'n')) &&
((arg[4] == 'T') || (arg[4] == 't')) &&
((arg[5] == ' ') || (arg[5] == ')'))) {
retval |= 0x10;
arg += 5;
}
else break; /* unknown return value */
/* more return values to come */
if ((*arg == ' ') && (arg[1] != ')')) ++arg;
}
/* RETURN list must be properly terminated */
if ((*arg++ != ')') || (*arg++ != ' ')) break;
/* default return value is ALL */
if (!(retval &= 0x3fff)) retval = 0x4;
}
/* character set specified? */
if (((arg[0] == 'C') || (arg[0] == 'c')) &&
((arg[1] == 'H') || (arg[1] == 'h')) &&
((arg[2] == 'A') || (arg[2] == 'a')) &&
((arg[3] == 'R') || (arg[3] == 'r')) &&
((arg[4] == 'S') || (arg[4] == 's')) &&
((arg[5] == 'E') || (arg[5] == 'e')) &&
((arg[6] == 'T') || (arg[6] == 't')) &&
(arg[7] == ' ')) {
arg += 8; /* yes, skip over CHARSET token */
if (s = snarf (&arg)) charset = cpystr (s);
else break; /* missing character set */
}
/* must have arguments here */
if (!(arg && *arg)) break;
if (parse_criteria (pgm = mail_newsearchpgm (),&arg,nmsgs,
uidmax (stream),0) && !*arg) {
response = win; /* looks good, try the search */
mail_search_full (stream,charset,pgm,SE_FREE);
/* output search results if success */
if (response == win) {
if (retval) { /* ESEARCH desired */
PSOUT ("* ESEARCH (TAG ");
pstring (tag);
PBOUT (')');
if (uid) PSOUT (" UID");
/* wants MIN */
if (retval & 0x1) {
for (i = 1; (i <= nmsgs) && !mail_elt (stream,i)->searched;
++i);
if (i <= nmsgs) {
PSOUT (" MIN ");
pnum (uid ? mail_uid (stream,i) : i);
}
}
/* wants MAX */
if (retval & 0x2) {
for (i = nmsgs; i && !mail_elt (stream,i)->searched; --i);
if (i) {
PSOUT (" MAX ");
pnum (uid ? mail_uid (stream,i) : i);
}
}
/* wants ALL */
if (retval & 0x4) {
unsigned long j;
/* find first match */
for (i = 1; (i <= nmsgs) && !mail_elt (stream,i)->searched;
++i);
if (i <= nmsgs) {
PSOUT (" ALL ");
pnum (uid ? mail_uid (stream,i) : i);
j = i; /* last message output */
}
while (++i <= nmsgs) {
if (mail_elt (stream,i)->searched) {
while ((++i <= nmsgs) && mail_elt (stream,i)->searched);
/* previous message is end of range */
if (j != --i) {
PBOUT (':');
pnum (uid ? mail_uid (stream,i) : i);
}
}
/* search for next match */
while ((++i <= nmsgs) && !mail_elt (stream,i)->searched);
if (i <= nmsgs) {
PBOUT (',');
pnum (uid ? mail_uid (stream,i) : i);
j = i; /* last message output */
}
}
}
/* wants COUNT */
if (retval & 0x10) {
unsigned long j;
for (i = 1, j = 0; i <= nmsgs; ++i)
if (mail_elt (stream,i)->searched) ++j;
PSOUT (" COUNT ");
pnum (j);
}
}
else { /* standard search */
PSOUT ("* SEARCH");
for (i = 1; i <= nmsgs; ++i)
if (mail_elt (stream,i)->searched) {
PBOUT (' ');
pnum (uid ? mail_uid (stream,i) : i);
}
}
CRLF;
}
}
else mail_free_searchpgm (&pgm);
if (charset) fs_give ((void **) &charset);
}
else /* fall into select case */
case SELECT: /* valid whenever logged in */
/* select new mailbox */
if (!(strcmp (cmd,"SELECT") && strcmp (cmd,"EXAMINE") &&
strcmp (cmd,"BBOARD"))) {
/* single argument */
if (!(s = snarf (&arg))) response = misarg;
else if (arg) response = badarg;
else if (nameok (NIL,s = bboardname (cmd,s))) {
DRIVER *factory = mail_valid (NIL,s,NIL);
f = (anonymous ? OP_ANONYMOUS + OP_READONLY : NIL) |
((*cmd == 'S') ? NIL : OP_READONLY);
curdriver = NIL; /* no drivers known */
/* no last uid */
uidvalidity = lastuid = 0;
if (lastid) fs_give ((void **) &lastid);
if (lastst.data) fs_give ((void **) &lastst.data);
nflags = 0; /* force update */
nmsgs = recent = 0xffffffff;
if (factory && !strcmp (factory->name,"phile") &&
(stream = mail_open (stream,s,f | OP_SILENT)) &&
(response == win)) {
BODY *b;
/* see if proxy open */
if ((mail_elt (stream,1)->rfc822_size < 400) &&
mail_fetchstructure (stream,1,&b) && (b->type == TYPETEXT) &&
(t = mail_fetch_text (stream,1,NIL,&i,NIL)) &&
(i < MAILTMPLEN) && (t[0] == '{')) {
/* copy and tie off */
strncpy (tmp,t,i)[i] = '\0';
/* nuke any trailing newline */
if (t = strpbrk (tmp,"\r\n")) *t = '\0';
/* try to open proxy */
if ((tstream = mail_open (NIL,tmp,f | OP_SILENT)) &&
(response == win) && tstream->nmsgs) {
s = tmp; /* got it, close the link */
mail_close (stream);
stream = tstream;
tstream = NIL;
}
}
/* now give the exists event */
stream->silent = NIL;
mm_exists (stream,stream->nmsgs);
}
else if (!factory && isnewsproxy (s)) {
sprintf (tmp,"{%.300s/nntp}%.300s",nntpproxy,(char *) s+6);
stream = mail_open (stream,tmp,f);
}
/* open stream normally then */
else stream = mail_open (stream,s,f);
if (stream && (response == win)) {
state = OPEN; /* note state open */
if (lastsel) fs_give ((void **) &lastsel);
/* canonicalize INBOX */
if (!compare_cstring (s,"#MHINBOX"))
lastsel = cpystr ("#MHINBOX");
else lastsel = cpystr (compare_cstring (s,"INBOX") ?
(char *) s : "INBOX");
/* note readonly/readwrite */
response = stream->rdonly ? rowin : rwwin;
if (anonymous)
syslog (LOG_INFO,"Anonymous select of %.80s host=%.80s",
stream->mailbox,tcp_clienthost ());
lastcheck = 0; /* no last check */
}
else { /* failed, nuke old selection */
if (stream) stream = mail_close (stream);
state = SELECT; /* no mailbox open now */
if (lastsel) fs_give ((void **) &lastsel);
response = lose; /* open failed */
}
}
}
/* APPEND message to mailbox */
else if (!(anonymous || strcmp (cmd,"APPEND"))) {
/* parse mailbox name */
if ((s = snarf (&arg)) && arg) {
STRING st; /* message stringstruct */
APPENDDATA ad;
ad.arg = arg; /* command arguments */
/* no message yet */
ad.flags = ad.date = ad.msg = NIL;
ad.message = &st; /* pointer to stringstruct to use */
trycreate = NIL; /* no trycreate status */
if (!mail_append_multiple (NIL,s,append_msg,(void *) &ad)) {
if (response == win) response = trycreate ? losetry : lose;
/* this can happen with #driver. hack */
if (!lsterr) lsterr = cpystr ("No such destination mailbox");
}
/* clean up any message text left behind */
if (ad.flags) fs_give ((void **) &ad.flags);
if (ad.date) fs_give ((void **) &ad.date);
if (ad.msg) fs_give ((void **) &ad.msg);
}
else response = misarg;
if (stream) /* allow untagged EXPUNGE */
mail_parameters (stream,SET_ONETIMEEXPUNGEATPING,(void *) stream);
}
/* list mailboxes */
else if (!strcmp (cmd,"LIST") || !strcmp (cmd,"RLIST")) {
/* get reference and mailbox argument */
if (!((s = snarf (&arg)) && (t = snarf_list (&arg))))
response = misarg;
else if (arg) response = badarg;
/* make sure anonymous can't do bad things */
else if (nameok (s,t)) {
if (newsproxypattern (s,t,tmp,LONGT)) {
proxylist = T;
mail_list (NIL,"",tmp);
proxylist = NIL;
}
else mail_list (NIL,s,t);
}
if (stream) /* allow untagged EXPUNGE */
mail_parameters (stream,SET_ONETIMEEXPUNGEATPING,(void *) stream);
}
/* scan mailboxes */
else if (!strcmp (cmd,"SCAN")) {
/* get arguments */
if (!((s = snarf (&arg)) && (t = snarf_list (&arg)) &&
(u = snarf (&arg)))) response = misarg;
else if (arg) response = badarg;
/* make sure anonymous can't do bad things */
else if (nameok (s,t)) {
if (newsproxypattern (s,t,tmp,NIL))
mm_log ("SCAN not permitted for news",ERROR);
else mail_scan (NIL,s,t,u);
}
if (stream) /* allow untagged EXPUNGE */
mail_parameters (stream,SET_ONETIMEEXPUNGEATPING,(void *) stream);
}
/* list subscribed mailboxes */
else if (!strcmp (cmd,"LSUB") || !strcmp (cmd,"RLSUB")) {
/* get reference and mailbox argument */
if (!((s = snarf (&arg)) && (t = snarf_list (&arg))))
response = misarg;
else if (arg) response = badarg;
/* make sure anonymous can't do bad things */
else if (nameok (s,t)) {
if (newsproxypattern (s,t,tmp,NIL)) newsrc_lsub (NIL,tmp);
else mail_lsub (NIL,s,t);
}
if (stream) /* allow untagged EXPUNGE */
mail_parameters (stream,SET_ONETIMEEXPUNGEATPING,(void *) stream);
}
/* find mailboxes */
else if (!strcmp (cmd,"FIND")) {
/* get subcommand and true argument */
if (!(arg && (s = strtok (arg," \015\012")) && (s == cmd + 5) &&
(cmd[4] = ' ') && ucase (s) &&
(arg = strtok (NIL,"\015\012")) && (s = snarf_list (&arg))))
response = misarg; /* missing required argument */
else if (arg) response = badarg;
/* punt on single-char wildcards */
else if (strpbrk (s,"%?")) response =
"%.80s NO IMAP2 ? and %% wildcards not supported: %.80s\015\012";
else if (nameok (NIL,s)) {
finding = T; /* note that we are FINDing */
/* dispatch based on type */
if (!strcmp (cmd,"FIND MAILBOXES") && !anonymous)
mail_lsub (NIL,NIL,s);
else if (!strcmp (cmd,"FIND ALL.MAILBOXES")) {
/* convert * to % for compatible behavior */
for (t = s; *t; t++) if (*t == '*') *t = '%';
mail_list (NIL,NIL,s);
}
else response = badcmd;
}
if (stream) /* allow untagged EXPUNGE */
mail_parameters (stream,SET_ONETIMEEXPUNGEATPING,(void *) stream);
}
/* status of mailbox */
else if (!strcmp (cmd,"STATUS")) {
if (!((s = snarf (&arg)) && arg && (*arg++ == '(') &&
(t = strchr (arg,')')) && (t - arg) && !t[1]))
response = misarg;
else {
f = NIL; /* initially no flags */
*t = '\0'; /* tie off flag string */
/* read flags */
t = strtok (ucase (arg)," ");
do { /* parse each one; unknown generate warning */
if (!strcmp (t,"MESSAGES")) f |= SA_MESSAGES;
else if (!strcmp (t,"RECENT")) f |= SA_RECENT;
else if (!strcmp (t,"UNSEEN")) f |= SA_UNSEEN;
else if (!strcmp (t,"UIDNEXT")) f |= SA_UIDNEXT;
else if (!strcmp (t,"UIDVALIDITY")) f |= SA_UIDVALIDITY;
else {
PSOUT ("* NO Unknown status flag ");
PSOUT (t);
CRLF;
}
} while (t = strtok (NIL," "));
ping_mailbox (uid); /* in case the fool did STATUS on open mbx */
PFLUSH (); /* make sure stdout is dumped in case slave */
if (!compare_cstring (s,"INBOX")) s = "INBOX";
else if (!compare_cstring (s,"#MHINBOX")) s = "#MHINBOX";
if (state == LOGOUT) response = lose;
/* get mailbox status */
else if (lastsel && (!strcmp (s,lastsel) ||
(stream && !strcmp (s,stream->mailbox)))) {
unsigned long unseen;
/* snarl at cretins which do this */
PSOUT ("* NO CLIENT BUG DETECTED: STATUS on selected mailbox: ");
PSOUT (s);
CRLF;
tmp[0] = ' '; tmp[1] = '\0';
if (f & SA_MESSAGES)
sprintf (tmp + strlen (tmp)," MESSAGES %lu",stream->nmsgs);
if (f & SA_RECENT)
sprintf (tmp + strlen (tmp)," RECENT %lu",stream->recent);
if (f & SA_UNSEEN) {
for (i = 1,unseen = 0; i <= stream->nmsgs; i++)
if (!mail_elt (stream,i)->seen) unseen++;
sprintf (tmp + strlen (tmp)," UNSEEN %lu",unseen);
}
if (f & SA_UIDNEXT)
sprintf (tmp + strlen (tmp)," UIDNEXT %lu",stream->uid_last+1);
if (f & SA_UIDVALIDITY)
sprintf (tmp + strlen(tmp)," UIDVALIDITY %lu",
stream->uid_validity);
tmp[1] = '(';
strcat (tmp,")\015\012");
PSOUT ("* STATUS ");
pastring (s);
PSOUT (tmp);
}
else if (isnewsproxy (s)) {
sprintf (tmp,"{%.300s/nntp}%.300s",nntpproxy,(char *) s+6);
if (!mail_status (NIL,tmp,f)) response = lose;
}
else if (!mail_status (NIL,s,f)) response = lose;
}
if (stream) /* allow untagged EXPUNGE */
mail_parameters (stream,SET_ONETIMEEXPUNGEATPING,(void *) stream);
}
/* subscribe to mailbox */
else if (!(anonymous || strcmp (cmd,"SUBSCRIBE"))) {
/* get <mailbox> or MAILBOX <mailbox> */
if (!(s = snarf (&arg))) response = misarg;
else if (arg) { /* IMAP2bis form */
if (compare_cstring (s,"MAILBOX")) response = badarg;
else if (!(s = snarf (&arg))) response = misarg;
else if (arg) response = badarg;
else mail_subscribe (NIL,s);
}
else if (isnewsproxy (s)) newsrc_update (NIL,s+6,':');
else mail_subscribe (NIL,s);
if (stream) /* allow untagged EXPUNGE */
mail_parameters (stream,SET_ONETIMEEXPUNGEATPING,(void *) stream);
}
/* unsubscribe to mailbox */
else if (!(anonymous || strcmp (cmd,"UNSUBSCRIBE"))) {
/* get <mailbox> or MAILBOX <mailbox> */
if (!(s = snarf (&arg))) response = misarg;
else if (arg) { /* IMAP2bis form */
if (compare_cstring (s,"MAILBOX")) response = badarg;
else if (!(s = snarf (&arg))) response = misarg;
else if (arg) response = badarg;
else if (isnewsproxy (s)) newsrc_update (NIL,s+6,'!');
else mail_unsubscribe (NIL,s);
}
else mail_unsubscribe (NIL,s);
if (stream) /* allow untagged EXPUNGE */
mail_parameters (stream,SET_ONETIMEEXPUNGEATPING,(void *) stream);
}
else if (!strcmp (cmd,"NAMESPACE")) {
if (arg) response = badarg;
else {
NAMESPACE **ns = (NAMESPACE **) mail_parameters(NIL,GET_NAMESPACE,
NIL);
NAMESPACE *n;
PARAMETER *p;
PSOUT ("* NAMESPACE");
if (ns) for (i = 0; i < 3; i++) {
if (n = ns[i]) {
PSOUT (" (");
do {
PBOUT ('(');
pstring (n->name);
switch (n->delimiter) {
case '\\': /* quoted delimiter */
case '"':
PSOUT (" \"\\\\\"");
break;
case '\0': /* no delimiter */
PSOUT (" NIL");
break;
default: /* unquoted delimiter */
PSOUT (" \"");
PBOUT (n->delimiter);
PBOUT ('"');
break;
}
/* NAMESPACE extensions are hairy */
if (p = n->param) do {
PBOUT (' ');
pstring (p->attribute);
PSOUT (" (");
do pstring (p->value);
while (p->next && !p->next->attribute && (p = p->next));
PBOUT (')');
} while (p = p->next);
PBOUT (')');
} while (n = n->next);
PBOUT (')');
}
else PSOUT (" NIL");
}
else PSOUT (" NIL NIL NIL");
CRLF;
}
if (stream) /* allow untagged EXPUNGE */
mail_parameters (stream,SET_ONETIMEEXPUNGEATPING,(void *) stream);
}
/* create mailbox */
else if (!(anonymous || strcmp (cmd,"CREATE"))) {
if (!(s = snarf (&arg))) response = misarg;
else if (arg) response = badarg;
else mail_create (NIL,s);
if (stream) /* allow untagged EXPUNGE */
mail_parameters (stream,SET_ONETIMEEXPUNGEATPING,(void *) stream);
}
/* delete mailbox */
else if (!(anonymous || strcmp (cmd,"DELETE"))) {
if (!(s = snarf (&arg))) response = misarg;
else if (arg) response = badarg;
else { /* make sure not selected */
if (lastsel && (!strcmp (s,lastsel) ||
(stream && !strcmp (s,stream->mailbox))))
mm_log ("Can not DELETE the selected mailbox",ERROR);
else mail_delete (NIL,s);
}
if (stream) /* allow untagged EXPUNGE */
mail_parameters (stream,SET_ONETIMEEXPUNGEATPING,(void *) stream);
}
/* rename mailbox */
else if (!(anonymous || strcmp (cmd,"RENAME"))) {
if (!((s = snarf (&arg)) && (t = snarf (&arg)))) response = misarg;
else if (arg) response = badarg;
else { /* make sure not selected */
if (!compare_cstring (s,"INBOX")) s = "INBOX";
else if (!compare_cstring (s,"#MHINBOX")) s = "#MHINBOX";
if (lastsel && (!strcmp (s,lastsel) ||
(stream && !strcmp (s,stream->mailbox))))
mm_log ("Can not RENAME the selected mailbox",ERROR);
else mail_rename (NIL,s,t);
}
if (stream) /* allow untagged EXPUNGE */
mail_parameters (stream,SET_ONETIMEEXPUNGEATPING,(void *) stream);
}
/* idle mode */
else if (!strcmp (cmd,"IDLE")) {
/* no arguments */
if (arg) response = badarg;
else { /* tell client ready for argument */
unsigned long donefake = 0;
PSOUT ("+ Waiting for DONE\015\012");
PFLUSH (); /* dump output buffer */
/* inactivity countdown */
i = ((TIMEOUT) / (IDLETIMER)) + 1;
do { /* main idle loop */
if (!donefake) { /* don't ping mailbox if faking */
mail_parameters (stream,SET_ONETIMEEXPUNGEATPING,
(void *) stream);
ping_mailbox (uid);
/* maybe do a checkpoint if not anonymous */
if (!anonymous && stream && (time (0) > lastcheck + CHECKTIMER)) {
mail_check (stream);
/* cancel likely altwin from mail_check() */
if (lsterr) fs_give ((void **) &lsterr);
if (lstwrn) fs_give ((void **) &lstwrn);
/* remember last checkpoint */
lastcheck = time (0);
}
}
if (lstwrn) { /* have a warning? */
PSOUT ("* NO ");
PSOUT (lstwrn);
CRLF;
fs_give ((void **) &lstwrn);
}
if (!(i % 2)) { /* prevent NAT timeouts */
sprintf (tmp,"* OK Timeout in %lu minutes\015\012",
(i * IDLETIMER) / 60);
PSOUT (tmp);
}
/* two minutes before the end... */
if ((state == OPEN) && (i <= 2)) {
sprintf (tmp,"* %lu EXISTS\015\012* %lu RECENT\015\012",
donefake = nmsgs + 1,recent + 1);
PSOUT (tmp); /* prod client to wake up */
}
PFLUSH (); /* dump output buffer */
} while ((state != LOGOUT) && !INWAIT (IDLETIMER) && --i);
/* time to exit idle loop */
if (state != LOGOUT) {
if (i) { /* still have time left? */
/* yes, read expected DONE */
slurp (tmp,MAILTMPLEN,INPUTTIMEOUT);
if (((tmp[0] != 'D') && (tmp[0] != 'd')) ||
((tmp[1] != 'O') && (tmp[1] != 'o')) ||
((tmp[2] != 'N') && (tmp[2] != 'n')) ||
((tmp[3] != 'E') && (tmp[3] != 'e')) ||
(((tmp[4] != '\015') || (tmp[5] != '\012')) &&
(tmp[4] != '\012')))
response = "%.80s BAD Bogus IDLE continuation\015\012";
if (donefake) { /* if faking at the end */
/* send EXPUNGE (should be just 1) */
while (donefake > nmsgs) {
sprintf (tmp,"* %lu EXPUNGE\015\012",donefake--);
PSOUT (tmp);
}
sprintf (tmp,"* %lu EXISTS\015\012* %lu RECENT\015\012",
nmsgs,recent);
PSOUT (tmp);
}
}
else clkint (); /* otherwise do autologout action */
}
}
}
else response = badcmd;
break;
default:
response = "%.80s BAD Unknown state for %.80s command\015\012";
break;
}
while (litplus.ok) { /* any unread LITERAL+? */
litplus.ok = NIL; /* yes, cancel it now */
clearerr (stdin); /* clear stdin errors */
status = "discarding unread literal";
/* read literal and discard it */
while (i = (litplus.size > MAILTMPLEN) ? MAILTMPLEN : litplus.size) {
if (state == LOGOUT) litplus.size = 0;
else {
settimeout (INPUTTIMEOUT);
if (PSINR (tmp,i)) litplus.size -= i;
else {
ioerror (stdin,status);
litplus.size = 0; /* in case it continues */
}
}
}
settimeout (0); /* stop timeout */
/* get new command tail */
slurp (tmp,MAILTMPLEN,INPUTTIMEOUT);
/* locate end of line */
if (t = strchr (tmp,'\012')) {
/* back over CR */
if ((t > tmp) && (t[-1] == '\015')) --t;
*t = NIL; /* tie off CRLF */
/* possible LITERAL+? */
if (((i = strlen (tmp)) > 3) && (tmp[i - 1] == '}') &&
(tmp[i - 2] == '+') && isdigit (tmp[i - 3])) {
/* back over possible count */
for (i -= 4; i && isdigit (tmp[i]); i--);
if (tmp[i] == '{') { /* found a literal? */
litplus.ok = T; /* yes, note LITERAL+ in effect, set size */
litplus.size = strtoul (tmp + i + 1,NIL,10);
}
}
}
else flush (); /* overlong line after LITERAL+, punt */
}
ping_mailbox (uid); /* update mailbox status before response */
if (lstwrn && lsterr) { /* output most recent warning */
PSOUT ("* NO ");
PSOUT (lstwrn);
CRLF;
fs_give ((void **) &lstwrn);
}
if (response == logwin) { /* authentication win message */
sprintf (tmp,response,lstref ? "*" : tag);
PSOUT (tmp); /* start response */
pcapability (1); /* print logged-in capabilities */
PSOUT ("] User ");
PSOUT (user);
PSOUT (" authenticated\015\012");
if (lstref) {
sprintf (tmp,response,tag);
PSOUT (tmp); /* start response */
PSOUT ("[REFERRAL ");
PSOUT (lstref);
PSOUT ("] ");
PSOUT (lasterror ());
CRLF;
}
}
else if ((response == win) || (response == lose)) {
sprintf (tmp,response,tag);
PSOUT (tmp);
if (cauidvalidity) { /* COPYUID/APPENDUID response? */
sprintf (tmp,"[%.80sUID %lu ",(char *)
((s = strchr (cmd,' ')) ? s+1 : cmd),cauidvalidity);
PSOUT (tmp);
cauidvalidity = 0; /* cancel response for future */
if (csset) {
pset (&csset);
PBOUT (' ');
}
pset (&caset);
PSOUT ("] ");
}
else if (lstref) { /* have a referral? */
PSOUT ("[REFERRAL ");
PSOUT (lstref);
PSOUT ("] ");
}
if (lsterr || lstwrn) PSOUT (lasterror ());
else {
PSOUT (cmd);
PSOUT ((response == win) ? " completed" : "failed");
}
CRLF;
}
else { /* normal response */
if ((response == rowin) || (response == rwwin)) {
if (lstwrn) { /* output most recent warning */
PSOUT ("* NO ");
PSOUT (lstwrn);
CRLF;
fs_give ((void **) &lstwrn);
}
}
sprintf (tmp,response,tag,cmd,lasterror ());
PSOUT (tmp); /* output response */
}
}
PFLUSH (); /* make sure output blatted */
if (autologouttime) { /* have an autologout in effect? */
/* cancel if no longer waiting for login */
if (state != LOGIN) autologouttime = 0;
/* took too long to login */
else if (autologouttime < time (0)) {
logout = goodbye = "Autologout";
stream = NIL;
state = LOGOUT; /* sayonara */
}
}
}
if (goodbye && !quell_events){/* have a goodbye message? */
PSOUT ("* BYE "); /* utter it */
PSOUT (goodbye);
CRLF;
PFLUSH (); /* make sure blatted */
}
syslog (LOG_INFO,"%s user=%.80s host=%.80s",logout,
user ? (char *) user : "???",tcp_clienthost ());
/* do logout hook if needed */
if (lgoh = (logouthook_t) mail_parameters (NIL,GET_LOGOUTHOOK,NIL))
(*lgoh) (mail_parameters (NIL,GET_LOGOUTDATA,NIL));
_exit (ret); /* all done */
return ret; /* stupid compilers */
}
/* Ping mailbox during each cycle. Also check alerts
* Accepts: last command was UID flag
*/
void ping_mailbox (unsigned long uid)
{
unsigned long i;
char tmp[MAILTMPLEN];
if (state == OPEN) {
if (!mail_ping (stream)) { /* make sure stream still alive */
PSOUT ("* BYE ");
PSOUT (mylocalhost ());
PSOUT (" Fatal mailbox error: ");
PSOUT (lasterror ());
CRLF;
stream = NIL; /* don't try to clean up stream */
state = LOGOUT; /* go away */
syslog (LOG_INFO,
"Fatal mailbox error user=%.80s host=%.80s mbx=%.80s: %.80s",
user ? (char *) user : "???",tcp_clienthost (),
(stream && stream->mailbox) ? stream->mailbox : "???",
lasterror ());
return;
}
/* change in number of messages? */
if (existsquelled || (nmsgs != stream->nmsgs)) {
PSOUT ("* ");
pnum (nmsgs = stream->nmsgs);
PSOUT (" EXISTS\015\012");
}
/* change in recent messages? */
if (existsquelled || (recent != stream->recent)) {
PSOUT ("* ");
pnum (recent = stream->recent);
PSOUT (" RECENT\015\012");
}
existsquelled = NIL; /* don't do this until asked again */
if (stream->uid_validity && (stream->uid_validity != uidvalidity)) {
PSOUT ("* OK [UIDVALIDITY ");
pnum (stream->uid_validity);
PSOUT ("] UID validity status\015\012* OK [UIDNEXT ");
pnum (stream->uid_last + 1);
PSOUT ("] Predicted next UID\015\012");
if (stream->uid_nosticky) {
PSOUT ("* NO [UIDNOTSTICKY] Non-permanent unique identifiers: ");
PSOUT (stream->mailbox);
CRLF;
}
uidvalidity = stream->uid_validity;
}
/* don't bother if driver changed */
if (curdriver == stream->dtb) {
/* first report any new flags */
if ((nflags < NUSERFLAGS) && stream->user_flags[nflags])
new_flags (stream);
for (i = 1; i <= nmsgs; i++) if (mail_elt (stream,i)->spare2) {
PSOUT ("* ");
pnum (i);
PSOUT (" FETCH (");
fetch_flags (i,NIL); /* output changed flags */
if (uid) { /* need to include UIDs in response? */
PBOUT (' ');
fetch_uid (i,NIL);
}
PSOUT (")\015\012");
}
}
else { /* driver changed */
new_flags (stream); /* send mailbox flags */
if (curdriver) { /* note readonly/write if possible change */
PSOUT ("* OK [READ-");
PSOUT (stream->rdonly ? "ONLY" : "WRITE");
PSOUT ("] Mailbox status\015\012");
}
curdriver = stream->dtb;
if (nmsgs) { /* get flags for all messages */
sprintf (tmp,"1:%lu",nmsgs);
mail_fetch_flags (stream,tmp,NIL);
/* don't do this if newsrc already did */
if (!(curdriver->flags & DR_NEWS)) {
/* find first unseen message */
for (i = 1; i <= nmsgs && mail_elt (stream,i)->seen; i++);
if (i <= nmsgs) {
PSOUT ("* OK [UNSEEN ");
pnum (i);
PSOUT ("] first unseen message in ");
PSOUT (stream->mailbox);
CRLF;
}
}
}
}
}
if (shutdowntime && (time (0) > shutdowntime + SHUTDOWNTIMER)) {
PSOUT ("* BYE Server shutting down\015\012");
state = LOGOUT;
}
/* don't do these stat()s every cycle */
else if (time (0) > alerttime + ALERTTIMER) {
struct stat sbuf;
/* have a shutdown file? */
if (!stat (SHUTDOWNFILE,&sbuf)) {
PSOUT ("* OK [ALERT] Server shutting down shortly\015\012");
shutdowntime = time (0);
}
alerttime = time (0); /* output any new alerts */
sysalerttime = palert (ALERTFILE,sysalerttime);
if (state != LOGIN) /* do user alert if logged in */
useralerttime = palert (mailboxfile (tmp,USERALERTFILE),useralerttime);
}
}
/* Print an alert file
* Accepts: path of alert file
* time of last printed alert file
* Returns: updated time of last printed alert file
*/
time_t palert (char *file,time_t oldtime)
{
FILE *alf;
struct stat sbuf;
int c,lc = '\012';
/* have a new alert file? */
if (stat (file,&sbuf) || (sbuf.st_mtime <= oldtime) ||
!(alf = fopen (file,"r"))) return oldtime;
/* yes, display it */
while ((c = getc (alf)) != EOF) {
if (lc == '\012') PSOUT ("* OK [ALERT] ");
switch (c) { /* output character */
case '\012': /* newline means do CRLF */
CRLF;
case '\015': /* flush CRs */
case '\0': /* flush nulls */
break;
default:
PBOUT (c); /* output all other characters */
break;
}
lc = c; /* note previous character */
}
fclose (alf);
if (lc != '\012') CRLF; /* final terminating CRLF */
return sbuf.st_mtime; /* return updated last alert time */
}
/* Initialize file string structure for file stringstruct
* Accepts: string structure
* pointer to message data structure
* size of string
*/
void msg_string_init (STRING *s,void *data,unsigned long size)
{
MSGDATA *md = (MSGDATA *) data;
s->data = data; /* note stream/msgno and header length */
#if 0
s->size = size; /* message size */
s->curpos = s->chunk = /* load header */
mail_fetchheader_full (md->stream,md->msgno,NIL,&s->data1,
FT_PREFETCHTEXT | FT_PEEK);
#else /* This kludge is necessary because of broken mail stores */
mail_fetchtext_full (md->stream,md->msgno,&s->size,FT_PEEK);
s->curpos = s->chunk = /* load header */
mail_fetchheader_full (md->stream,md->msgno,NIL,&s->data1,FT_PEEK);
s->size += s->data1; /* header + body size */
#endif
s->cursize = s->chunksize = s->data1;
s->offset = 0; /* offset is start of message */
}
/* Get next character from file stringstruct
* Accepts: string structure
* Returns: character, string structure chunk refreshed
*/
char msg_string_next (STRING *s)
{
char c = *s->curpos++; /* get next byte */
SETPOS (s,GETPOS (s)); /* move to next chunk */
return c; /* return the byte */
}
/* Set string pointer position for file stringstruct
* Accepts: string structure
* new position
*/
void msg_string_setpos (STRING *s,unsigned long i)
{
MSGDATA *md = (MSGDATA *) s->data;
if (i < s->data1) { /* want header? */
s->chunk = mail_fetchheader_full (md->stream,md->msgno,NIL,NIL,FT_PEEK);
s->chunksize = s->data1; /* header length */
s->offset = 0; /* offset is start of message */
}
else if (i < s->size) { /* want body */
s->chunk = mail_fetchtext_full (md->stream,md->msgno,NIL,FT_PEEK);
s->chunksize = s->size - s->data1;
s->offset = s->data1; /* offset is end of header */
}
else { /* off end of message */
s->chunk = NIL; /* make sure that we crack on this then */
s->chunksize = 1; /* make sure SNX cracks the right way... */
s->offset = i;
}
/* initial position and size */
s->curpos = s->chunk + (i -= s->offset);
s->cursize = s->chunksize - i;
}
/* Send flags for stream
* Accepts: MAIL stream
* scratch buffer
*/
void new_flags (MAILSTREAM *stream)
{
int i,c;
PSOUT ("* FLAGS (");
for (i = 0; i < NUSERFLAGS; i++) if (stream->user_flags[i]) {
PSOUT (stream->user_flags[i]);
PBOUT (' ');
nflags = i + 1;
}
PSOUT ("\\Answered \\Flagged \\Deleted \\Draft \\Seen)\015\012* OK [PERMANENTFLAGS (");
for (i = c = 0; i < NUSERFLAGS; i++)
if ((stream->perm_user_flags & (1 << i)) && stream->user_flags[i])
put_flag (&c,stream->user_flags[i]);
if (stream->kwd_create) put_flag (&c,"\\*");
if (stream->perm_answered) put_flag (&c,"\\Answered");
if (stream->perm_flagged) put_flag (&c,"\\Flagged");
if (stream->perm_deleted) put_flag (&c,"\\Deleted");
if (stream->perm_draft) put_flag (&c,"\\Draft");
if (stream->perm_seen) put_flag (&c,"\\Seen");
PSOUT (")] Permanent flags\015\012");
}
/* Set timeout
* Accepts: desired interval
*/
void settimeout (unsigned int i)
{
/* limit if not logged in */
if (i) alarm ((state == LOGIN) ? LOGINTIMEOUT : i);
else alarm (0);
}
/* Clock interrupt
* Returns only if critical code in progress
*/
void clkint (void)
{
settimeout (0); /* disable all interrupts */
server_init (NIL,NIL,NIL,SIG_IGN,SIG_IGN,SIG_IGN,SIG_IGN,SIG_IGN);
logout = "Autologout";
goodbye = "Autologout (idle for too long)";
if (critical) { /* must defer if in critical code(?) */
close (0); /* kill stdin */
state = LOGOUT; /* die as soon as we can */
}
else longjmp (jmpenv,1); /* die now */
}
/* Kiss Of Death interrupt
* Returns only if critical code in progress
*/
void kodint (void)
{
settimeout (0); /* disable all interrupts */
server_init (NIL,NIL,NIL,SIG_IGN,SIG_IGN,SIG_IGN,SIG_IGN,SIG_IGN);
logout = goodbye = "Killed (lost mailbox lock)";
if (critical) { /* must defer if in critical code */
close (0); /* kill stdin */
state = LOGOUT; /* die as soon as we can */
}
else longjmp (jmpenv,1); /* die now */
}
/* Hangup interrupt
* Returns only if critical code in progress
*/
void hupint (void)
{
settimeout (0); /* disable all interrupts */
server_init (NIL,NIL,NIL,SIG_IGN,SIG_IGN,SIG_IGN,SIG_IGN,SIG_IGN);
logout = "Hangup";
goodbye = NIL; /* other end is already gone */
if (critical) { /* must defer if in critical code */
close (0); /* kill stdin */
close (1); /* and stdout */
state = LOGOUT; /* die as soon as we can */
}
else longjmp (jmpenv,1); /* die now */
}
/* Termination interrupt
* Returns only if critical code in progress
*/
void trmint (void)
{
settimeout (0); /* disable all interrupts */
server_init (NIL,NIL,NIL,SIG_IGN,SIG_IGN,SIG_IGN,SIG_IGN,SIG_IGN);
logout = goodbye = "Killed (terminated)";
/* Make no attempt at graceful closure since a shutdown may be in
* progress, and we won't have any time to do mail_close() actions
*/
stream = NIL;
if (critical) { /* must defer if in critical code */
close (0); /* kill stdin */
close (1); /* and stdout */
state = LOGOUT; /* die as soon as we can */
}
else longjmp (jmpenv,1); /* die now */
}
/* The routines on this and the next page eschew the use of non-syscall libc
* routines (especially stdio) for a reason. Also, these hideous #if
* condtionals need to be replaced.
*/
#ifndef unix
#define unix 0
#endif
/* Status request interrupt
* Always returns
*/
void staint (void)
{
#if unix
int fd;
char *s,buf[8*MAILTMPLEN];
unsigned long pid = getpid ();
/* build file name */
s = nout (sout (buf,"/tmp/imapd-status."),pid,10);
if (user) s = sout (sout (s,"."),user);
*s = '\0'; /* tie off file name */
if ((fd = open (buf,O_WRONLY | O_CREAT | O_TRUNC,0666)) >= 0) {
fchmod (fd,0666);
s = nout (sout (buf,"PID="),pid,10);
if (user) s = sout (sout (s,", user="),user);
switch (state) {
case LOGIN:
s = sout (s,", not logged in");
break;
case SELECT:
s = sout (s,", logged in");
break;
case OPEN:
s = sout (s,", mailbox open");
break;
case LOGOUT:
s = sout (s,", logging out");
break;
}
if (stream && stream->mailbox)
s = sout (sout (s,"\nmailbox="),stream->mailbox);
*s++ = '\n';
if (status) {
s = sout (s,status);
if (cmd) s = sout (sout (s,", last command="),cmd);
}
else s = sout (sout (s,cmd)," in progress");
*s++ = '\n';
write (fd,buf,s-buf);
close (fd);
}
#endif
}
/* Write string
* Accepts: destination string pointer
* string
* Returns: updated string pointer
*/
char *sout (char *s,char *t)
{
while (*t) *s++ = *t++;
return s;
}
/* Write number
* Accepts: destination string pointer
* number
* base
* Returns: updated string pointer
*/
char *nout (char *s,unsigned long n,unsigned long base)
{
char stack[256];
char *t = stack;
/* push PID digits on stack */
do *t++ = (char) (n % base) + '0';
while (n /= base);
/* pop digits from stack */
while (t > stack) *s++ = *--t;
return s;
}
/* Slurp a command line
* Accepts: buffer pointer
* buffer size
* input timeout
*/
void slurp (char *s,int n,unsigned long timeout)
{
memset (s,'\0',n); /* zap buffer */
if (state != LOGOUT) { /* get a command under timeout */
settimeout (timeout);
clearerr (stdin); /* clear stdin errors */
status = "reading line";
if (!PSIN (s,n-1)) ioerror (stdin,status);
settimeout (0); /* make sure timeout disabled */
status = NIL;
}
}
/* Read a literal
* Accepts: destination buffer (must be size+1 for trailing NUL)
* size of buffer (must be less than 4294967295)
*/
void inliteral (char *s,unsigned long n)
{
unsigned long i;
if (litplus.ok) { /* no more LITERAL+ to worry about */
litplus.ok = NIL;
litplus.size = 0;
}
else { /* otherwise tell client ready for argument */
PSOUT ("+ Ready for argument\015\012");
PFLUSH (); /* dump output buffer */
}
clearerr (stdin); /* clear stdin errors */
memset (s,'\0',n+1); /* zap buffer */
status = "reading literal";
while (n) { /* get data under timeout */
if (state == LOGOUT) n = 0;
else {
settimeout (INPUTTIMEOUT);
i = min (n,8192); /* must read at least 8K within timeout */
if (PSINR (s,i)) {
s += i;
n -= i;
}
else {
ioerror (stdin,status);
n = 0; /* in case it continues */
}
settimeout (0); /* stop timeout */
}
}
}
/* Flush until newline seen
* Returns: NIL, always
*/
unsigned char *flush (void)
{
int c;
if (state != LOGOUT) {
settimeout (INPUTTIMEOUT);
clearerr (stdin); /* clear stdin errors */
status = "flushing line";
while ((c = PBIN ()) != '\012') if (c == EOF) ioerror (stdin,status);
settimeout (0); /* make sure timeout disabled */
}
response = "%.80s BAD Command line too long\015\012";
status = NIL;
return NIL;
}
/* Report command stream error and die
* Accepts: stdin or stdout (whichever got the error)
* reason (what caller was doing)
*/
void ioerror (FILE *f,char *reason)
{
static char msg[MAILTMPLEN];
char *s,*t;
if (logout) { /* say nothing if already dying */
settimeout (0); /* disable all interrupts */
server_init (NIL,NIL,NIL,SIG_IGN,SIG_IGN,SIG_IGN,SIG_IGN,SIG_IGN);
/* write error string */
for (s = ferror (f) ? strerror (errno) : "Unexpected client disconnect",
t = logout = msg; *s; *t++ = *s++);
for (s = ", while "; *s; *t++ = *s++);
for (s = reason; *s; *t++ = *s++);
if (critical) { /* must defer if in critical code */
close (0); /* kill stdin */
close (1); /* and stdout */
state = LOGOUT; /* die as soon as we can */
}
else longjmp (jmpenv,1); /* die now */
}
}
/* Parse an IMAP astring
* Accepts: pointer to argument text pointer
* pointer to returned size
* pointer to returned delimiter
* Returns: argument
*/
unsigned char *parse_astring (unsigned char **arg,unsigned long *size,
unsigned char *del)
{
unsigned long i;
unsigned char c,*s,*t,*v;
if (!*arg) return NIL; /* better be an argument */
switch (**arg) { /* see what the argument is */
default: /* atom */
for (s = t = *arg, i = 0;
(*t > ' ') && (*t < 0x7f) && (*t != '(') && (*t != ')') &&
(*t != '{') && (*t != '%') && (*t != '*') && (*t != '"') &&
(*t != '\\'); ++t,++i);
if (*size = i) break; /* got atom if non-empty */
case ')': case '%': case '*': case '\\': case '\0': case ' ':
return NIL; /* empty atom is a bogon */
case '"': /* hunt for trailing quote */
for (s = t = v = *arg + 1; (c = *t++) != '"'; *v++ = c) {
/* quote next character */
if (c == '\\') switch (c = *t++) {
case '"': case '\\': break;
default: return NIL; /* invalid quote-next */
}
/* else must be a CHAR */
if (!c || (c & 0x80)) return NIL;
}
*v = '\0'; /* tie off string */
*size = v - s; /* return size */
break;
case '{': /* literal string */
s = *arg + 1; /* get size */
if (!isdigit (*s)) return NIL;
if ((*size = i = strtoul (s,(char **) &t,10)) > MAXCLIENTLIT) {
mm_notify (NIL,"Absurdly long client literal",ERROR);
syslog (LOG_INFO,"Overlong (%lu) client literal user=%.80s host=%.80s",
i,user ? (char *) user : "???",tcp_clienthost ());
return NIL;
}
switch (*t) { /* validate end of literal */
case '+': /* non-blocking literal */
if (*++t != '}') return NIL;
case '}':
if (!t[1]) break; /* OK if end of line */
default:
return NIL; /* bad literal */
}
if (litsp >= LITSTKLEN) { /* make sure don't overflow stack */
mm_notify (NIL,"Too many literals in command",ERROR);
return NIL;
}
/* get a literal buffer */
inliteral (s = litstk[litsp++] = (char *) fs_get (i+1),i);
/* get new command tail */
slurp (*arg = t,CMDLEN - (t - cmdbuf),INPUTTIMEOUT);
if (!strchr (t,'\012')) return flush ();
/* reset strtok mechanism, tie off if done */
if (!strtok (t,"\015\012")) *t = '\0';
/* possible LITERAL+? */
if (((i = strlen (t)) > 3) && (t[i - 1] == '}') &&
(t[i - 2] == '+') && isdigit (t[i - 3])) {
/* back over possible count */
for (i -= 4; i && isdigit (t[i]); i--);
if (t[i] == '{') { /* found a literal? */
litplus.ok = T; /* yes, note LITERAL+ in effect, set size */
litplus.size = strtoul (t + i + 1,NIL,10);
}
}
break;
}
if (*del = *t) { /* have a delimiter? */
*t++ = '\0'; /* yes, stomp on it */
*arg = t; /* update argument pointer */
}
else *arg = NIL; /* no more arguments */
return s;
}
/* Snarf a command argument (simple jacket into parse_astring())
* Accepts: pointer to argument text pointer
* Returns: argument
*/
unsigned char *snarf (unsigned char **arg)
{
unsigned long i;
unsigned char c;
unsigned char *s = parse_astring (arg,&i,&c);
return ((c == ' ') || !c) ? s : NIL;
}
/* Snarf a BASE64 argument for SASL-IR
* Accepts: pointer to argument text pointer
* Returns: argument
*/
unsigned char *snarf_base64 (unsigned char **arg)
{
unsigned char *ret = *arg;
unsigned char *s = ret + 1;
static char base64mask[256] = {
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,
0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,
0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
};
if (*(ret = *arg) == '='); /* easy case if zero-length argument */
/* must be at least one BASE64 char */
else if (!base64mask[*ret]) return NIL;
else { /* quick and dirty */
while (base64mask[*s++]); /* scan until end of BASE64 */
if (*s == '=') ++s; /* allow up to two padding chars */
if (*s == '=') ++s;
}
switch (*s) { /* anything following the argument? */
case ' ': /* another argument */
*s++ = '\0'; /* tie off previous argument */
*arg = s; /* and update argument pointer */
break;
case '\0': /* end of command */
*arg = NIL;
break;
default: /* syntax error */
return NIL;
}
return ret; /* return BASE64 string */
}
/* Snarf a list command argument (simple jacket into parse_astring())
* Accepts: pointer to argument text pointer
* Returns: argument
*/
unsigned char *snarf_list (unsigned char **arg)
{
unsigned long i;
unsigned char c,*s,*t;
if (!*arg) return NIL; /* better be an argument */
switch (**arg) {
default: /* atom and/or wildcard chars */
for (s = t = *arg, i = 0;
(*t > ' ') && (*t != '(') && (*t != ')') && (*t != '{') &&
(*t != '"') && (*t != '\\'); ++t,++i);
if (c = *t) { /* have a delimiter? */
*t++ = '\0'; /* stomp on it */
*arg = t; /* update argument pointer */
}
else *arg = NIL;
break;
case ')': case '\\': case '\0': case ' ':
return NIL; /* empty name is bogus */
case '"': /* quoted string? */
case '{': /* or literal? */
s = parse_astring (arg,&i,&c);
break;
}
return ((c == ' ') || !c) ? s : NIL;
}
/* Get a list of header lines
* Accepts: pointer to string pointer
* pointer to list flag
* Returns: string list
*/
STRINGLIST *parse_stringlist (unsigned char **s,int *list)
{
char c = ' ',*t;
unsigned long i;
STRINGLIST *ret = NIL,*cur = NIL;
if (*s && **s == '(') { /* proper list? */
++*s; /* for each item in list */
while ((c == ' ') && (t = parse_astring (s,&i,&c))) {
/* get new block */
if (cur) cur = cur->next = mail_newstringlist ();
else cur = ret = mail_newstringlist ();
/* note text */
cur->text.data = (unsigned char *) fs_get (i + 1);
memcpy (cur->text.data,t,i);
cur->text.size = i; /* and size */
}
/* must be end of list */
if (c != ')') mail_free_stringlist (&ret);
}
if (t = *s) { /* need to reload strtok() state? */
/* end of a list? */
if (*list && (*t == ')') && !t[1]) *list = NIL;
else {
*--t = ' '; /* patch a space back in */
*--t = 'x'; /* and a hokey character before that */
t = strtok (t," "); /* reset to *s */
}
}
return ret;
}
/* Get value of UID * for criteria parsing
* Accepts: stream
* Returns: maximum UID
*/
unsigned long uidmax (MAILSTREAM *stream)
{
return stream->nmsgs ? mail_uid (stream,stream->nmsgs) : 0xffffffff;
}
/* Parse search criteria
* Accepts: search program to write criteria into
* pointer to argument text pointer
* maximum message number
* maximum UID
* logical nesting depth
* Returns: T if success, NIL if error
*/
long parse_criteria (SEARCHPGM *pgm,unsigned char **arg,unsigned long maxmsg,
unsigned long maxuid,unsigned long depth)
{
if (arg && *arg) { /* must be an argument */
/* parse criteria */
do if (!parse_criterion (pgm,arg,maxmsg,maxuid,depth)) return NIL;
/* as long as a space delimiter */
while (**arg == ' ' && (*arg)++);
/* failed if not end of criteria */
if (**arg && **arg != ')') return NIL;
}
return T; /* success */
}
/* Parse a search criterion
* Accepts: search program to write criterion into
* pointer to argument text pointer
* maximum message number
* maximum UID
* logical nesting depth
* Returns: T if success, NIL if error
*/
long parse_criterion (SEARCHPGM *pgm,unsigned char **arg,unsigned long maxmsg,
unsigned long maxuid,unsigned long depth)
{
unsigned long i;
unsigned char c = NIL,*s,*t,*v,*tail,*del;
SEARCHSET **set;
SEARCHPGMLIST **not;
SEARCHOR **or;
SEARCHHEADER **hdr;
long ret = NIL;
/* better be an argument */
if ((depth > 500) || !(arg && *arg));
else if (**arg == '(') { /* list of criteria? */
(*arg)++; /* yes, parse the criteria */
if (parse_criteria (pgm,arg,maxmsg,maxuid,depth+1) && **arg == ')') {
(*arg)++; /* skip closing paren */
ret = T; /* successful parse of list */
}
}
else { /* find end of criterion */
if (!(tail = strpbrk ((s = *arg)," )"))) tail = *arg + strlen (*arg);
c = *(del = tail); /* remember the delimiter */
*del = '\0'; /* tie off criterion */
switch (*ucase (s)) { /* dispatch based on character */
case '*': /* sequence */
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
if (*(set = &pgm->msgno)){/* already a sequence? */
/* silly, but not as silly as the client! */
for (not = &pgm->not; *not; not = &(*not)->next);
*not = mail_newsearchpgmlist ();
set = &((*not)->pgm->not = mail_newsearchpgmlist ())->pgm->msgno;
}
ret = crit_set (set,&s,maxmsg) && (tail == s);
break;
case 'A': /* possible ALL, ANSWERED */
if (!strcmp (s+1,"LL")) ret = T;
else if (!strcmp (s+1,"NSWERED")) ret = pgm->answered = T;
break;
case 'B': /* possible BCC, BEFORE, BODY */
if (!strcmp (s+1,"CC") && c == ' ' && *++tail)
ret = crit_string (&pgm->bcc,&tail);
else if (!strcmp (s+1,"EFORE") && c == ' ' && *++tail)
ret = crit_date (&pgm->before,&tail);
else if (!strcmp (s+1,"ODY") && c == ' ' && *++tail)
ret = crit_string (&pgm->body,&tail);
break;
case 'C': /* possible CC */
if (!strcmp (s+1,"C") && c == ' ' && *++tail)
ret = crit_string (&pgm->cc,&tail);
break;
case 'D': /* possible DELETED */
if (!strcmp (s+1,"ELETED")) ret = pgm->deleted = T;
if (!strcmp (s+1,"RAFT")) ret = pgm->draft = T;
break;
case 'F': /* possible FLAGGED, FROM */
if (!strcmp (s+1,"LAGGED")) ret = pgm->flagged = T;
else if (!strcmp (s+1,"ROM") && c == ' ' && *++tail)
ret = crit_string (&pgm->from,&tail);
break;
case 'H': /* possible HEADER */
if (!strcmp (s+1,"EADER") && c == ' ' && *(v = tail + 1) &&
(s = parse_astring (&v,&i,&c)) && i && c == ' ' &&
(t = parse_astring (&v,&i,&c))) {
for (hdr = &pgm->header; *hdr; hdr = &(*hdr)->next);
*hdr = mail_newsearchheader (s,t);
/* update tail, restore delimiter */
*(tail = v ? v - 1 : t + i) = c;
ret = T; /* success */
}
break;
case 'K': /* possible KEYWORD */
if (!strcmp (s+1,"EYWORD") && c == ' ' && *++tail)
ret = crit_string (&pgm->keyword,&tail);
break;
case 'L':
if (!strcmp (s+1,"ARGER") && c == ' ' && *++tail)
ret = crit_number (&pgm->larger,&tail);
break;
case 'N': /* possible NEW, NOT */
if (!strcmp (s+1,"EW")) ret = pgm->recent = pgm->unseen = T;
else if (!strcmp (s+1,"OT") && c == ' ' && *++tail) {
for (not = &pgm->not; *not; not = &(*not)->next);
*not = mail_newsearchpgmlist ();
ret = parse_criterion ((*not)->pgm,&tail,maxmsg,maxuid,depth+1);
}
break;
case 'O': /* possible OLD, ON */
if (!strcmp (s+1,"LD")) ret = pgm->old = T;
else if (!strcmp (s+1,"N") && c == ' ' && *++tail)
ret = crit_date (&pgm->on,&tail);
else if (!strcmp (s+1,"R") && c == ' ') {
for (or = &pgm->or; *or; or = &(*or)->next);
*or = mail_newsearchor ();
ret = *++tail && parse_criterion((*or)->first,&tail,maxmsg,maxuid,
depth+1) &&
(*tail == ' ') && *++tail &&
parse_criterion ((*or)->second,&tail,maxmsg,maxuid,depth+1);
}
else if (!strcmp (s+1,"LDER") && c == ' ' && *++tail)
ret = crit_number (&pgm->older,&tail);
break;
case 'R': /* possible RECENT */
if (!strcmp (s+1,"ECENT")) ret = pgm->recent = T;
break;
case 'S': /* possible SEEN, SINCE, SUBJECT */
if (!strcmp (s+1,"EEN")) ret = pgm->seen = T;
else if (!strcmp (s+1,"ENTBEFORE") && c == ' ' && *++tail)
ret = crit_date (&pgm->sentbefore,&tail);
else if (!strcmp (s+1,"ENTON") && c == ' ' && *++tail)
ret = crit_date (&pgm->senton,&tail);
else if (!strcmp (s+1,"ENTSINCE") && c == ' ' && *++tail)
ret = crit_date (&pgm->sentsince,&tail);
else if (!strcmp (s+1,"INCE") && c == ' ' && *++tail)
ret = crit_date (&pgm->since,&tail);
else if (!strcmp (s+1,"MALLER") && c == ' ' && *++tail)
ret = crit_number (&pgm->smaller,&tail);
else if (!strcmp (s+1,"UBJECT") && c == ' ' && *++tail)
ret = crit_string (&pgm->subject,&tail);
break;
case 'T': /* possible TEXT, TO */
if (!strcmp (s+1,"EXT") && c == ' ' && *++tail)
ret = crit_string (&pgm->text,&tail);
else if (!strcmp (s+1,"O") && c == ' ' && *++tail)
ret = crit_string (&pgm->to,&tail);
break;
case 'U': /* possible UID, UN* */
if (!strcmp (s+1,"ID") && c== ' ' && *++tail) {
if (*(set = &pgm->uid)){/* already a sequence? */
/* silly, but not as silly as the client! */
for (not = &pgm->not; *not; not = &(*not)->next);
*not = mail_newsearchpgmlist ();
set = &((*not)->pgm->not = mail_newsearchpgmlist ())->pgm->uid;
}
ret = crit_set (set,&tail,maxuid);
}
else if (!strcmp (s+1,"NANSWERED")) ret = pgm->unanswered = T;
else if (!strcmp (s+1,"NDELETED")) ret = pgm->undeleted = T;
else if (!strcmp (s+1,"NDRAFT")) ret = pgm->undraft = T;
else if (!strcmp (s+1,"NFLAGGED")) ret = pgm->unflagged = T;
else if (!strcmp (s+1,"NKEYWORD") && c == ' ' && *++tail)
ret = crit_string (&pgm->unkeyword,&tail);
else if (!strcmp (s+1,"NSEEN")) ret = pgm->unseen = T;
break;
case 'Y': /* possible YOUNGER */
if (!strcmp (s+1,"OUNGER") && c == ' ' && *++tail)
ret = crit_number (&pgm->younger,&tail);
break;
default: /* oh dear */
break;
}
if (ret) { /* only bother if success */
*del = c; /* restore delimiter */
*arg = tail; /* update argument pointer */
}
}
return ret; /* return more to come */
}
/* Parse a search date criterion
* Accepts: date to write into
* pointer to argument text pointer
* Returns: T if success, NIL if error
*/
long crit_date (unsigned short *date,unsigned char **arg)
{
if (*date) return NIL; /* can't double this value */
/* handle quoted form */
if (**arg != '"') return crit_date_work (date,arg);
(*arg)++; /* skip past opening quote */
if (!(crit_date_work (date,arg) && (**arg == '"'))) return NIL;
(*arg)++; /* skip closing quote */
return T;
}
/* Worker routine to parse a search date criterion
* Accepts: date to write into
* pointer to argument text pointer
* Returns: T if success, NIL if error
*/
long crit_date_work (unsigned short *date,unsigned char **arg)
{
int d,m,y;
/* day */
if (isdigit (d = *(*arg)++) || ((d == ' ') && isdigit (**arg))) {
if (d == ' ') d = 0; /* leading space */
else d -= '0'; /* first digit */
if (isdigit (**arg)) { /* if a second digit */
d *= 10; /* slide over first digit */
d += *(*arg)++ - '0'; /* second digit */
}
if ((**arg == '-') && (y = *++(*arg))) {
m = (y >= 'a' ? y - 'a' : y - 'A') * 1024;
if ((y = *++(*arg))) {
m += (y >= 'a' ? y - 'a' : y - 'A') * 32;
if ((y = *++(*arg))) {
m += (y >= 'a' ? y - 'a' : y - 'A');
switch (m) { /* determine the month */
case (('J'-'A') * 1024) + (('A'-'A') * 32) + ('N'-'A'): m = 1; break;
case (('F'-'A') * 1024) + (('E'-'A') * 32) + ('B'-'A'): m = 2; break;
case (('M'-'A') * 1024) + (('A'-'A') * 32) + ('R'-'A'): m = 3; break;
case (('A'-'A') * 1024) + (('P'-'A') * 32) + ('R'-'A'): m = 4; break;
case (('M'-'A') * 1024) + (('A'-'A') * 32) + ('Y'-'A'): m = 5; break;
case (('J'-'A') * 1024) + (('U'-'A') * 32) + ('N'-'A'): m = 6; break;
case (('J'-'A') * 1024) + (('U'-'A') * 32) + ('L'-'A'): m = 7; break;
case (('A'-'A') * 1024) + (('U'-'A') * 32) + ('G'-'A'): m = 8; break;
case (('S'-'A') * 1024) + (('E'-'A') * 32) + ('P'-'A'): m = 9; break;
case (('O'-'A') * 1024) + (('C'-'A') * 32) + ('T'-'A'): m = 10;break;
case (('N'-'A') * 1024) + (('O'-'A') * 32) + ('V'-'A'): m = 11;break;
case (('D'-'A') * 1024) + (('E'-'A') * 32) + ('C'-'A'): m = 12;break;
default: return NIL;
}
if ((*++(*arg) == '-') && isdigit (*++(*arg))) {
y = 0; /* init year */
do {
y *= 10; /* add this number */
y += *(*arg)++ - '0';
}
while (isdigit (**arg));
/* minimal validity check of date */
if (d < 1 || d > 31 || m < 1 || m > 12 || y < 0) return NIL;
/* time began on UNIX in 1970 */
if (y < 100) y += (y >= (BASEYEAR - 1900)) ? 1900 : 2000;
/* return value */
*date = mail_shortdate (y - BASEYEAR,m,d);
return T; /* success */
}
}
}
}
}
return NIL; /* else error */
}
/* Parse a search set criterion
* Accepts: set to write into
* pointer to argument text pointer
* maximum value permitted
* Returns: T if success, NIL if error
*/
long crit_set (SEARCHSET **set,unsigned char **arg,unsigned long maxima)
{
unsigned long i = 0;
if (*set) return NIL; /* can't double this value */
*set = mail_newsearchset (); /* instantiate a new search set */
if (**arg == '*') { /* maxnum? */
(*arg)++; /* skip past that number */
(*set)->first = maxima;
}
else if (crit_number (&i,arg) && i) (*set)->first = i;
else return NIL; /* bogon */
switch (**arg) { /* decide based on delimiter */
case ':': /* sequence range */
i = 0; /* reset for crit_number() */
if (*++(*arg) == '*') { /* maxnum? */
(*arg)++; /* skip past that number */
(*set)->last = maxima;
}
else if (crit_number (&i,arg) && i) {
if (i < (*set)->first) { /* backwards range */
(*set)->last = (*set)->first;
(*set)->first = i;
}
else (*set)->last = i; /* set last number */
}
else return NIL; /* bogon */
if (**arg != ',') break; /* drop into comma case if comma seen */
case ',':
(*arg)++; /* skip past delimiter */
return crit_set (&(*set)->next,arg,maxima);
default:
break;
}
return T; /* return success */
}
/* Parse a search number criterion
* Accepts: number to write into
* pointer to argument text pointer
* Returns: T if success, NIL if error
*/
long crit_number (unsigned long *number,unsigned char **arg)
{
/* can't double this value */
if (*number || !isdigit (**arg)) return NIL;
*number = 0;
while (isdigit (**arg)) { /* found a digit? */
*number *= 10; /* add a decade */
*number += *(*arg)++ - '0'; /* add number */
}
return T;
}
/* Parse a search string criterion
* Accepts: date to write into
* pointer to argument text pointer
* Returns: T if success, NIL if error
*/
long crit_string (STRINGLIST **string,unsigned char **arg)
{
unsigned long i;
char c;
char *s = parse_astring (arg,&i,&c);
if (!s) return NIL;
/* find tail of list */
while (*string) string = &(*string)->next;
*string = mail_newstringlist ();
(*string)->text.data = (unsigned char *) fs_get (i + 1);
memcpy ((*string)->text.data,s,i);
(*string)->text.data[i] = '\0';
(*string)->text.size = i;
/* if end of arguments, wrap it up here */
if (!*arg) *arg = (char *) (*string)->text.data + i;
else (*--(*arg) = c); /* back up pointer, restore delimiter */
return T;
}
/* Fetch message data
* Accepts: string of data items to be fetched (must be writeable)
* UID fetch flag
*/
#define MAXFETCH 100
void fetch (char *t,unsigned long uid)
{
fetchfn_t f[MAXFETCH +2];
void *fa[MAXFETCH + 2];
int k;
memset ((void *) f,NIL,sizeof (f));
memset ((void *) fa,NIL,sizeof (fa));
fetch_work (t,uid,f,fa); /* do the work */
/* clean up arguments */
for (k = 1; f[k]; k++) if (fa[k]) (*f[k]) (0,fa[k]);
}
/* Fetch message data worker routine
* Accepts: string of data items to be fetched (must be writeable)
* UID fetch flag
* function dispatch vector
* function argument vector
*/
void fetch_work (char *t,unsigned long uid,fetchfn_t f[],void *fa[])
{
unsigned char *s,*v;
unsigned long i;
unsigned long k = 0;
BODY *b;
int list = NIL;
int parse_envs = NIL;
int parse_bodies = NIL;
if (uid) { /* need to fetch UIDs? */
fa[k] = NIL; /* no argument */
f[k++] = fetch_uid; /* push a UID fetch on the stack */
}
/* process macros */
if (!strcmp (ucase (t),"ALL"))
strcpy (t,"(FLAGS INTERNALDATE RFC822.SIZE ENVELOPE)");
else if (!strcmp (t,"FULL"))
strcpy (t,"(FLAGS INTERNALDATE RFC822.SIZE ENVELOPE BODY)");
else if (!strcmp (t,"FAST")) strcpy (t,"(FLAGS INTERNALDATE RFC822.SIZE)");
if (list = (*t == '(')) t++; /* skip open paren */
if (s = strtok (t," ")) do { /* parse attribute list */
if (list && (i = strlen (s)) && (s[i-1] == ')')) {
list = NIL; /* done with list */
s[i-1] = '\0'; /* tie off last item */
}
fa[k] = NIL; /* default to no argument */
if (!strcmp (s,"UID")) { /* no-op if implicit */
if (!uid) f[k++] = fetch_uid;
}
else if (!strcmp (s,"FLAGS")) f[k++] = fetch_flags;
else if (!strcmp (s,"INTERNALDATE")) f[k++] = fetch_internaldate;
else if (!strcmp (s,"RFC822.SIZE")) f[k++] = fetch_rfc822_size;
else if (!strcmp (s,"ENVELOPE")) {
parse_envs = T; /* we will need to parse envelopes */
f[k++] = fetch_envelope;
}
else if (!strcmp (s,"BODY")) {
parse_envs = parse_bodies = T;
f[k++] = fetch_body;
}
else if (!strcmp (s,"BODYSTRUCTURE")) {
parse_envs = parse_bodies = T;
f[k++] = fetch_bodystructure;
}
else if (!strcmp (s,"RFC822")) {
fa[k] = s[6] ? (void *) FT_PEEK : NIL;
f[k++] = fetch_rfc822;
}
else if (!strcmp (s,"RFC822.HEADER")) f[k++] = fetch_rfc822_header;
else if (!strcmp (s,"RFC822.TEXT")) {
fa[k] = s[11] ? (void *) FT_PEEK : NIL;
f[k++] = fetch_rfc822_text;
}
else if (!strncmp (s,"BODY[",5) || !strncmp (s,"BODY.PEEK[",10) ||
!strncmp (s,"BINARY[",7) || !strncmp (s,"BINARY.PEEK[",12) ||
!strncmp (s,"BINARY.SIZE[",12)) {
TEXTARGS *ta = (TEXTARGS *)
memset (fs_get (sizeof (TEXTARGS)),0,sizeof (TEXTARGS));
if (s[1] == 'I') { /* body or binary? */
ta->binary = FTB_BINARY;/* binary */
f[k] = fetch_body_part_binary;
if (s[6] == '.') { /* wanted peek or size? */
if (s[7] == 'P') ta->flags = FT_PEEK;
else ta->binary |= FTB_SIZE;
s += 12; /* skip to section specifier */
}
else s += 7; /* skip to section specifier */
if (!isdigit (*s)) { /* make sure top-level digit */
fs_give ((void **) &ta);
response = badbin;
return;
}
}
else { /* body */
f[k] = fetch_body_part_contents;
if (s[4] == '.') { /* wanted peek? */
ta->flags = FT_PEEK;
s += 10; /* skip to section specifier */
}
else s += 5; /* skip to section specifier */
}
if (*(v = s) != ']') { /* non-empty section specifier? */
if (isdigit (*v)) { /* have section specifier? */
/* need envelopes and bodies */
parse_envs = parse_bodies = T;
while (isdigit (*v)) /* scan to end of section specifier */
if ((*++v == '.') && isdigit (v[1])) v++;
/* any IMAP4rev1 stuff following? */
if ((*v == '.') && isalpha (v[1])) {
if (ta->binary) { /* not if binary you don't */
fs_give ((void **) &ta);
response = badbin;
return;
}
*v++ = '\0'; /* yes, tie off section specifier */
if (!strncmp (v,"MIME",4)) {
v += 4; /* found <section>.MIME */
f[k] = fetch_body_part_mime;
}
}
else if (*v != ']') { /* better be the end if no IMAP4rev1 stuff */
fs_give ((void **) &ta);/* clean up */
response = "%.80s BAD Syntax error in section specifier\015\012";
return;
}
}
if (*v != ']') { /* IMAP4rev1 stuff here? */
if (!strncmp (v,"HEADER",6)) {
*v = '\0'; /* tie off in case top level */
v += 6; /* found [<section>.]HEADER */
f[k] = fetch_body_part_header;
/* partial headers wanted? */
if (!strncmp (v,".FIELDS",7)) {
v += 7; /* yes */
if (!strncmp (v,".NOT",4)) {
v += 4; /* want to exclude named headers */
ta->flags |= FT_NOT;
}
if (*v || !(v = strtok (NIL,"\015\012")) ||
!(ta->lines = parse_stringlist (&v,&list))) {
fs_give ((void **) &ta);/* clean up */
response = "%.80s BAD Syntax error in header fields\015\012";
return;
}
}
}
else if (!strncmp (v,"TEXT",4)) {
*v = '\0'; /* tie off in case top level */
v += 4; /* found [<section>.]TEXT */
f[k] = fetch_body_part_text;
}
else {
fs_give ((void **) &ta);/* clean up */
response = "%.80s BAD Unknown section text specifier\015\012";
return;
}
}
}
/* tie off section */
if (*v == ']') *v++ = '\0';
else { /* bogon */
if (ta->lines) mail_free_stringlist (&ta->lines);
fs_give ((void **) &ta);/* clean up */
response = "%.80s BAD Section specifier not terminated\015\012";
return;
}
if ((*v == '<') && /* partial specifier? */
((ta->binary & FTB_SIZE) ||
!(isdigit (v[1]) && ((ta->first = strtoul (v+1,(char **) &v,10)) ||
v) &&
(*v++ == '.') && (ta->last = strtoul (v,(char **) &v,10)) &&
(*v++ == '>')))) {
if (ta->lines) mail_free_stringlist (&ta->lines);
fs_give ((void **) &ta);
response ="%.80s BAD Syntax error in partial text specifier\015\012";
return;
}
switch (*v) { /* what's there now? */
case ' ': /* more follows */
*--v = ' '; /* patch a space back in */
*--v = 'x'; /* and a hokey character before that */
strtok (v," "); /* reset strtok mechanism */
break;
case '\0': /* none */
break;
case ')': /* end of list */
if (list && !v[1]) { /* make sure of that */
list = NIL;
strtok (v," "); /* reset strtok mechanism */
break; /* all done */
}
/* otherwise it's a bogon, drop in */
default: /* bogon */
if (ta->lines) mail_free_stringlist (&ta->lines);
fs_give ((void **) &ta);
response = "%.80s BAD Syntax error after section specifier\015\012";
return;
}
/* make copy of section specifier */
if (s && *s) ta->section = cpystr (s);
fa[k++] = (void *) ta; /* set argument */
}
else { /* unknown attribute */
response = badatt;
return;
}
} while ((s = strtok (NIL," ")) && (k < MAXFETCH) && list);
else {
response = misarg; /* missing attribute list */
return;
}
if (s) { /* too many attributes? */
response = "%.80s BAD Excessively complex FETCH attribute list\015\012";
return;
}
if (list) { /* too many attributes? */
response = "%.80s BAD Unterminated FETCH attribute list\015\012";
return;
}
f[k] = NIL; /* tie off attribute list */
/* c-client clobbers sequence, use spare */
for (i = 1; i <= nmsgs; i++)
mail_elt (stream,i)->spare = mail_elt (stream,i)->sequence;
/* for each requested message */
for (i = 1; (i <= nmsgs) && (response != loseunknowncte); i++) {
/* kill if dying */
if (state == LOGOUT) longjmp (jmpenv,1);
if (mail_elt (stream,i)->spare) {
/* parse envelope, set body, do warnings */
if (parse_envs) mail_fetchstructure (stream,i,parse_bodies ? &b : NIL);
quell_events = T; /* can't do any events now */
PSOUT ("* "); /* leader */
pnum (i);
PSOUT (" FETCH (");
(*f[0]) (i,fa[0]); /* do first attribute */
/* for each subsequent attribute */
for (k = 1; f[k] && (response != loseunknowncte); k++) {
PBOUT (' '); /* delimit with space */
(*f[k]) (i,fa[k]); /* do that attribute */
}
PSOUT (")\015\012"); /* trailer */
quell_events = NIL; /* events alright now */
}
}
}
/* Fetch message body structure (extensible)
* Accepts: message number
* extra argument
*/
void fetch_bodystructure (unsigned long i,void *args)
{
BODY *body;
mail_fetchstructure (stream,i,&body);
PSOUT ("BODYSTRUCTURE ");
pbodystructure (body); /* output body */
}
/* Fetch message body structure (non-extensible)
* Accepts: message number
* extra argument
*/
void fetch_body (unsigned long i,void *args)
{
BODY *body;
mail_fetchstructure (stream,i,&body);
PSOUT ("BODY "); /* output attribute */
pbody (body); /* output body */
}
/* Fetch body part MIME header
* Accepts: message number
* extra argument
*/
void fetch_body_part_mime (unsigned long i,void *args)
{
TEXTARGS *ta = (TEXTARGS *) args;
if (i) { /* do work? */
SIZEDTEXT st;
unsigned long uid = mail_uid (stream,i);
char *tmp = (char *) fs_get (100 + strlen (ta->section));
sprintf (tmp,"BODY[%s.MIME]",ta->section);
/* try to use remembered text */
if (lastuid && (uid == lastuid) && !strcmp (tmp,lastid)) st = lastst;
else { /* get data */
st.data = (unsigned char *)
mail_fetch_mime (stream,i,ta->section,&st.size,ta->flags);
if (ta->first || ta->last) remember (uid,tmp,&st);
}
pbodypartstring (i,tmp,&st,NIL,ta);
fs_give ((void **) &tmp);
}
else { /* clean up the arguments */
fs_give ((void **) &ta->section);
fs_give ((void **) &args);
}
}
/* Fetch body part contents
* Accepts: message number
* extra argument
*/
void fetch_body_part_contents (unsigned long i,void *args)
{
TEXTARGS *ta = (TEXTARGS *) args;
if (i) { /* do work? */
SIZEDTEXT st;
char *tmp = (char *) fs_get (100+(ta->section ? strlen (ta->section) : 0));
unsigned long uid = mail_uid (stream,i);
sprintf (tmp,"BODY[%s]",ta->section ? ta->section : "");
/* try to use remembered text */
if (lastuid && (uid == lastuid) && !strcmp (tmp,lastid)) st = lastst;
/* get data */
else if ((st.data = (unsigned char *)
mail_fetch_body (stream,i,ta->section,&st.size,
ta->flags | FT_RETURNSTRINGSTRUCT)) &&
(ta->first || ta->last)) remember (uid,tmp,&st);
pbodypartstring (i,tmp,&st,&stream->private.string,ta);
fs_give ((void **) &tmp);
}
else { /* clean up the arguments */
if (ta->section) fs_give ((void **) &ta->section);
fs_give ((void **) &args);
}
}
/* Fetch body part binary
* Accepts: message number
* extra argument
* Someday fix this to use stringstruct instead of memory
*/
void fetch_body_part_binary (unsigned long i,void *args)
{
TEXTARGS *ta = (TEXTARGS *) args;
if (i) { /* do work? */
SIZEDTEXT st,cst;
BODY *body = mail_body (stream,i,ta->section);
char *tmp = (char *) fs_get (100+(ta->section ? strlen (ta->section) : 0));
unsigned long uid = mail_uid (stream,i);
/* try to use remembered text */
if (lastuid && (uid == lastuid) && !strcmp (tmp,lastid)) st = lastst;
else { /* get data */
st.data = (unsigned char *)
mail_fetch_body (stream,i,ta->section,&st.size,ta->flags);
if (ta->first || ta->last) remember (uid,tmp,&st);
}
/* what encoding was used? */
if (body) switch (body->encoding) {
case ENCBASE64:
if (cst.data = rfc822_base64 (st.data,st.size,&cst.size)) break;
fetch_uid (i,NIL); /* wrote a space, so must do something */
if (lsterr) fs_give ((void **) &lsterr);
lsterr = cpystr ("Undecodable BASE64 contents");
response = loseunknowncte;
fs_give ((void **) &tmp);
return;
case ENCQUOTEDPRINTABLE:
if (cst.data = rfc822_qprint (st.data,st.size,&cst.size)) break;
fetch_uid (i,NIL); /* wrote a space, so must do something */
if (lsterr) fs_give ((void **) &lsterr);
lsterr = cpystr ("Undecodable QUOTED-PRINTABLE contents");
response = loseunknowncte;
fs_give ((void **) &tmp);
return;
case ENC7BIT: /* no need to convert any of these */
case ENC8BIT:
case ENCBINARY:
cst.data = NIL; /* no converted data to free */
break;
default: /* unknown encoding, oops */
fetch_uid (i,NIL); /* wrote a space, so must do something */
if (lsterr) fs_give ((void **) &lsterr);
lsterr = cpystr ("Unknown Content-Transfer-Encoding");
response = loseunknowncte;
fs_give ((void **) &tmp);
return;
}
else {
if (lsterr) fs_give ((void **) &lsterr);
lsterr = cpystr ("Invalid body part");
response = loseunknowncte;
fs_give ((void **) &tmp);
return;
}
/* use decoded version if exists */
if (cst.data) memcpy ((void *) &st,(void *) &cst,sizeof (SIZEDTEXT));
if (ta->binary & FTB_SIZE) {/* just want size? */
sprintf (tmp,"BINARY.SIZE[%s] %lu",ta->section ? ta->section : "",
st.size);
PSOUT (tmp);
}
else { /* no, blat binary data */
int f = mail_elt (stream,i)->seen;
if (st.data) { /* only if have useful data */
/* partial specifier */
if (ta->first || ta->last)
sprintf (tmp,"BINARY[%s]<%lu> ",
ta->section ? ta->section : "",ta->first);
else sprintf (tmp,"BINARY[%s] ",ta->section ? ta->section : "");
/* in case first byte beyond end of text */
if (st.size <= ta->first) st.size = ta->first = 0;
else { /* offset and truncate */
st.data += ta->first; /* move to desired position */
st.size -= ta->first; /* reduced size */
if (ta->last && (st.size > ta->last)) st.size = ta->last;
}
if (st.size) sprintf (tmp + strlen (tmp),"{%lu}\015\012",st.size);
else strcat (tmp,"\"\"");
PSOUT (tmp); /* write binary output */
if (st.size && (PSOUTR (&st) == EOF)) ioerror(stdout,"writing binary");
}
else {
sprintf (tmp,"BINARY[%s] NIL",ta->section ? ta->section : "");
PSOUT (tmp);
}
changed_flags (i,f); /* write changed flags */
}
/* free converted data */
if (cst.data) fs_give ((void **) &cst.data);
fs_give ((void **) &tmp); /* and temporary string */
}
else { /* clean up the arguments */
if (ta->section) fs_give ((void **) &ta->section);
fs_give ((void **) &args);
}
}
/* Fetch MESSAGE/RFC822 body part header
* Accepts: message number
* extra argument
*/
void fetch_body_part_header (unsigned long i,void *args)
{
TEXTARGS *ta = (TEXTARGS *) args;
unsigned long len = 100 + (ta->section ? strlen (ta->section) : 0);
STRINGLIST *s;
for (s = ta->lines; s; s = s->next) len += s->text.size + 1;
if (i) { /* do work? */
SIZEDTEXT st;
char *tmp = (char *) fs_get (len);
PSOUT ("BODY[");
/* output attribute */
if (ta->section && *ta->section) {
PSOUT (ta->section);
PBOUT ('.');
}
PSOUT ("HEADER");
if (ta->lines) {
PSOUT ((ta->flags & FT_NOT) ? ".FIELDS.NOT " : ".FIELDS ");
pastringlist (ta->lines);
}
strcpy (tmp,"]"); /* close section specifier */
st.data = (unsigned char *) /* get data (no hope in using remember here) */
mail_fetch_header (stream,i,ta->section,ta->lines,&st.size,ta->flags);
pbodypartstring (i,tmp,&st,NIL,ta);
fs_give ((void **) &tmp);
}
else { /* clean up the arguments */
if (ta->lines) mail_free_stringlist (&ta->lines);
if (ta->section) fs_give ((void **) &ta->section);
fs_give ((void **) &args);
}
}
/* Fetch MESSAGE/RFC822 body part text
* Accepts: message number
* extra argument
*/
void fetch_body_part_text (unsigned long i,void *args)
{
TEXTARGS *ta = (TEXTARGS *) args;
if (i) { /* do work? */
SIZEDTEXT st;
char *tmp = (char *) fs_get (100+(ta->section ? strlen (ta->section) : 0));
unsigned long uid = mail_uid (stream,i);
/* output attribute */
if (ta->section && *ta->section) sprintf (tmp,"BODY[%s.TEXT]",ta->section);
else strcpy (tmp,"BODY[TEXT]");
/* try to use remembered text */
if (lastuid && (uid == lastuid) && !strcmp (tmp,lastid)) st = lastst;
/* get data */
else if ((st.data = (unsigned char *)
mail_fetch_text (stream,i,ta->section,&st.size,
ta->flags | FT_RETURNSTRINGSTRUCT)) &&
(ta->first || ta->last)) remember (uid,tmp,&st);
pbodypartstring (i,tmp,&st,&stream->private.string,ta);
fs_give ((void **) &tmp);
}
else { /* clean up the arguments */
if (ta->section) fs_give ((void **) &ta->section);
fs_give ((void **) &args);
}
}
/* Remember body part text for subsequent partial fetching
* Accepts: message UID
* body part id
* text
* string
*/
void remember (unsigned long uid,char *id,SIZEDTEXT *st)
{
lastuid = uid; /* remember UID */
if (lastid) fs_give ((void **) &lastid);
lastid = cpystr (id); /* remember body part id */
if (lastst.data) fs_give ((void **) &lastst.data);
/* remember text */
lastst.data = (unsigned char *)
memcpy (fs_get (st->size + 1),st->data,st->size);
lastst.size = st->size;
}
/* Fetch envelope
* Accepts: message number
* extra argument
*/
void fetch_envelope (unsigned long i,void *args)
{
ENVELOPE *env = mail_fetchenvelope (stream,i);
PSOUT ("ENVELOPE "); /* output attribute */
penv (env); /* output envelope */
}
/* Fetch flags
* Accepts: message number
* extra argument
*/
void fetch_flags (unsigned long i,void *args)
{
unsigned long u;
char *t,tmp[MAILTMPLEN];
int c = NIL;
MESSAGECACHE *elt = mail_elt (stream,i);
if (!elt->valid) { /* have valid flags yet? */
sprintf (tmp,"%lu",i);
mail_fetch_flags (stream,tmp,NIL);
}
PSOUT ("FLAGS ("); /* output attribute */
/* output system flags */
if (elt->recent) put_flag (&c,"\\Recent");
if (elt->seen) put_flag (&c,"\\Seen");
if (elt->deleted) put_flag (&c,"\\Deleted");
if (elt->flagged) put_flag (&c,"\\Flagged");
if (elt->answered) put_flag (&c,"\\Answered");
if (elt->draft) put_flag (&c,"\\Draft");
if (u = elt->user_flags) do /* any user flags? */
if (t = stream->user_flags[find_rightmost_bit (&u)]) put_flag (&c,t);
while (u); /* until no more user flags */
PBOUT (')'); /* end of flags */
elt->spare2 = NIL; /* we've sent the update */
}
/* Output a flag
* Accepts: pointer to current delimiter character
* flag to output
* Changes delimiter character to space
*/
void put_flag (int *c,char *s)
{
if (*c) PBOUT (*c); /* put delimiter */
PSOUT (s); /* dump flag */
*c = ' '; /* change delimiter if necessary */
}
/* Output flags if was unseen
* Accepts: message number
* prior value of Seen flag
*/
void changed_flags (unsigned long i,int f)
{
/* was unseen, now seen? */
if (!f && mail_elt (stream,i)->seen) {
PBOUT (' '); /* yes, delimit with space */
fetch_flags (i,NIL); /* output flags */
}
}
/* Fetch message internal date
* Accepts: message number
* extra argument
*/
void fetch_internaldate (unsigned long i,void *args)
{
char tmp[MAILTMPLEN];
MESSAGECACHE *elt = mail_elt (stream,i);
if (!elt->day) { /* have internal date yet? */
sprintf (tmp,"%lu",i);
mail_fetch_fast (stream,tmp,NIL);
}
PSOUT ("INTERNALDATE \"");
PSOUT (mail_date (tmp,elt));
PBOUT ('"');
}
/* Fetch unique identifier
* Accepts: message number
* extra argument
*/
void fetch_uid (unsigned long i,void *args)
{
PSOUT ("UID ");
pnum (mail_uid (stream,i));
}
/* Fetch complete RFC-822 format message
* Accepts: message number
* extra argument
*/
void fetch_rfc822 (unsigned long i,void *args)
{
if (i) { /* do work? */
int f = mail_elt (stream,i)->seen;
#if 0
SIZEDTEXT st;
st.data = (unsigned char *)
mail_fetch_message (stream,i,&st.size,(long) args);
pbodypartstring (i,"RFC822",&st,NIL,NIL);
#else
/* Yes, this version is bletcherous, but mail_fetch_message() requires
too much memory */
SIZEDTEXT txt,hdr;
char *s = mail_fetch_header (stream,i,NIL,NIL,&hdr.size,FT_PEEK);
hdr.data = (unsigned char *) memcpy (fs_get (hdr.size),s,hdr.size);
txt.data = (unsigned char *)
mail_fetch_text (stream,i,NIL,&txt.size,
((long) args) | FT_RETURNSTRINGSTRUCT);
PSOUT ("RFC822 {");
pnum (hdr.size + txt.size);
PSOUT ("}\015\012");
ptext (&hdr,NIL);
ptext (&txt,&stream->private.string);
fs_give ((void **) &hdr.data);
#endif
changed_flags (i,f); /* output changed flags */
}
}
/* Fetch RFC-822 header
* Accepts: message number
* extra argument
*/
void fetch_rfc822_header (unsigned long i,void *args)
{
SIZEDTEXT st;
st.data = (unsigned char *)
mail_fetch_header (stream,i,NIL,NIL,&st.size,FT_PEEK);
pbodypartstring (i,"RFC822.HEADER",&st,NIL,NIL);
}
/* Fetch RFC-822 message length
* Accepts: message number
* extra argument
*/
void fetch_rfc822_size (unsigned long i,void *args)
{
char tmp[MAILTMPLEN];
MESSAGECACHE *elt = mail_elt (stream,i);
if (!elt->rfc822_size) { /* have message size yet? */
sprintf (tmp,"%lu",i);
mail_fetch_fast (stream,tmp,NIL);
}
PSOUT ("RFC822.SIZE ");
pnum (elt->rfc822_size);
}
/* Fetch RFC-822 text only
* Accepts: message number
* extra argument
*/
void fetch_rfc822_text (unsigned long i,void *args)
{
if (i) { /* do work? */
int f = mail_elt (stream,i)->seen;
SIZEDTEXT st;
st.data = (unsigned char *)
mail_fetch_text (stream,i,NIL,&st.size,
((long) args) | FT_RETURNSTRINGSTRUCT);
pbodypartstring (i,"RFC822.TEXT",&st,&stream->private.string,NIL);
}
}
/* Print envelope
* Accepts: body
*/
void penv (ENVELOPE *env)
{
PBOUT ('('); /* delimiter */
if (env) { /* only if there is an envelope */
pnstring (env->date); /* output envelope fields */
PBOUT (' ');
pnstring (env->subject);
PBOUT (' ');
paddr (env->from);
PBOUT (' ');
paddr (env->sender);
PBOUT (' ');
paddr (env->reply_to);
PBOUT (' ');
paddr (env->to);
PBOUT (' ');
paddr (env->cc);
PBOUT (' ');
paddr (env->bcc);
PBOUT (' ');
pnstring (env->in_reply_to);
PBOUT (' ');
pnstring (env->message_id);
}
/* no envelope */
else PSOUT ("NIL NIL NIL NIL NIL NIL NIL NIL NIL NIL");
PBOUT (')'); /* end of envelope */
}
/* Print body structure (extensible)
* Accepts: body
*/
void pbodystructure (BODY *body)
{
PBOUT ('('); /* delimiter */
if (body) { /* only if there is a body */
PART *part;
/* multipart type? */
if (body->type == TYPEMULTIPART) {
/* print each part */
if (part = body->nested.part)
for (; part; part = part->next) pbodystructure (&(part->body));
else pbodystructure (NIL);
PBOUT (' '); /* space delimiter */
pstring (body->subtype); /* subtype */
PBOUT (' ');
pparam (body->parameter); /* multipart body extension data */
PBOUT (' ');
if (body->disposition.type) {
PBOUT ('(');
pstring (body->disposition.type);
PBOUT (' ');
pparam (body->disposition.parameter);
PBOUT (')');
}
else PSOUT ("NIL");
PBOUT (' ');
pnstringorlist (body->language);
PBOUT (' ');
pnstring (body->location);
}
else { /* non-multipart body type */
pstring ((char *) body_types[body->type]);
PBOUT (' ');
pstring (body->subtype);
PBOUT (' ');
pparam (body->parameter);
PBOUT (' ');
pnstring (body->id);
PBOUT (' ');
pnstring (body->description);
PBOUT (' ');
pstring ((char *) body_encodings[body->encoding]);
PBOUT (' ');
pnum (body->size.bytes);
switch (body->type) { /* extra stuff depends upon body type */
case TYPEMESSAGE:
/* can't do this if not RFC822 */
if (strcmp (body->subtype,"RFC822")) break;
PBOUT (' ');
penv (body->nested.msg->env);
PBOUT (' ');
pbodystructure (body->nested.msg->body);
case TYPETEXT:
PBOUT (' ');
pnum (body->size.lines);
break;
default:
break;
}
PBOUT (' ');
pnstring (body->md5);
PBOUT (' ');
if (body->disposition.type) {
PBOUT ('(');
pstring (body->disposition.type);
PBOUT (' ');
pparam (body->disposition.parameter);
PBOUT (')');
}
else PSOUT ("NIL");
PBOUT (' ');
pnstringorlist (body->language);
PBOUT (' ');
pnstring (body->location);
}
}
/* no body */
else PSOUT ("\"TEXT\" \"PLAIN\" (\"CHARSET\" \"US-ASCII\") NIL NIL \"7BIT\" 0 0 NIL NIL NIL NIL");
PBOUT (')'); /* end of body */
}
/* Print body (non-extensible)
* Accepts: body
*/
void pbody (BODY *body)
{
PBOUT ('('); /* delimiter */
if (body) { /* only if there is a body */
PART *part;
/* multipart type? */
if (body->type == TYPEMULTIPART) {
/* print each part */
if (part = body->nested.part)
for (; part; part = part->next) pbody (&(part->body));
else pbody (NIL);
PBOUT (' '); /* space delimiter */
pstring (body->subtype); /* and finally the subtype */
}
else { /* non-multipart body type */
pstring ((char *) body_types[body->type]);
PBOUT (' ');
pstring (body->subtype);
PBOUT (' ');
pparam (body->parameter);
PBOUT (' ');
pnstring (body->id);
PBOUT (' ');
pnstring (body->description);
PBOUT (' ');
pstring ((char *) body_encodings[body->encoding]);
PBOUT (' ');
pnum (body->size.bytes);
switch (body->type) { /* extra stuff depends upon body type */
case TYPEMESSAGE:
/* can't do this if not RFC822 */
if (strcmp (body->subtype,"RFC822")) break;
PBOUT (' ');
penv (body->nested.msg ? body->nested.msg->env : NIL);
PBOUT (' ');
pbody (body->nested.msg ? body->nested.msg->body : NIL);
case TYPETEXT:
PBOUT (' ');
pnum (body->size.lines);
break;
default:
break;
}
}
}
/* no body */
else PSOUT ("\"TEXT\" \"PLAIN\" (\"CHARSET\" \"US-ASCII\") NIL NIL \"7BIT\" 0 0");
PBOUT (')'); /* end of body */
}
/* Print parameter list
* Accepts: paramter
*/
void pparam (PARAMETER *param)
{
if (param) { /* one specified? */
PBOUT ('(');
do {
pstring (param->attribute);
PBOUT (' ');
pstring (param->value);
if (param = param->next) PBOUT (' ');
} while (param);
PBOUT (')'); /* end of parameters */
}
else PSOUT ("NIL");
}
/* Print address list
* Accepts: address list
*/
void paddr (ADDRESS *a)
{
if (a) { /* have anything in address? */
PBOUT ('('); /* open the address list */
do { /* for each address */
PBOUT ('('); /* open the address */
pnstring (a->personal); /* personal name */
PBOUT (' ');
pnstring (a->adl); /* at-domain-list */
PBOUT (' ');
pnstring (a->mailbox); /* mailbox */
PBOUT (' ');
pnstring (a->host); /* domain name of mailbox's host */
PBOUT (')'); /* terminate address */
} while (a = a->next); /* until end of address */
PBOUT (')'); /* close address list */
}
else PSOUT ("NIL"); /* empty address */
}
/* Print set
* Accepts: set
*/
void pset (SEARCHSET **set)
{
SEARCHSET *cur = *set;
while (cur) { /* while there's a set to do */
pnum (cur->first); /* output first value */
if (cur->last) { /* if range, output second value of range */
PBOUT (':');
pnum (cur->last);
}
if (cur = cur->next) PBOUT (',');
}
mail_free_searchset (set); /* flush set */
}
/* Print number
* Accepts: number
*/
void pnum (unsigned long i)
{
char tmp[MAILTMPLEN];
sprintf (tmp,"%lu",i);
PSOUT (tmp);
}
/* Print string
* Accepts: string
*/
void pstring (char *s)
{
SIZEDTEXT st;
st.data = (unsigned char *) s;/* set up sized text */
st.size = strlen (s);
psizedstring (&st,NIL); /* print string */
}
/* Print nstring
* Accepts: string or NIL
*/
void pnstring (char *s)
{
if (s) pstring (s); /* print string */
else PSOUT ("NIL");
}
/* Print atom or string
* Accepts: astring
*/
void pastring (char *s)
{
char *t;
if (!*s) PSOUT ("\"\""); /* empty string */
else { /* see if atom */
for (t = s; (*t > ' ') && !(*t & 0x80) &&
(*t != '"') && (*t != '\\') && (*t != '(') && (*t != ')') &&
(*t != '{') && (*t != '%') && (*t != '*'); t++);
if (*t) pstring (s); /* not an atom */
else PSOUT (s); /* else plop down as atomic */
}
}
/* Print sized text as quoted
* Accepts: sized text
*/
void psizedquoted (SIZEDTEXT *s)
{
PBOUT ('"'); /* use quoted string */
ptext (s,NIL);
PBOUT ('"');
}
/* Print sized text as literal
* Accepts: sized text
*/
void psizedliteral (SIZEDTEXT *s,STRING *st)
{
PBOUT ('{'); /* print literal size */
pnum (s->size);
PSOUT ("}\015\012");
ptext (s,st);
}
/* Print sized text as literal or quoted string
* Accepts: sized text
* alternative stringstruct of text
*/
void psizedstring (SIZEDTEXT *s,STRING *st)
{
unsigned char c;
unsigned long i;
if (s->data) { /* if text, check if must use literal */
for (i = 0; ((i < s->size) && ((c = s->data[i]) & 0xe0) &&
!(c & 0x80) && (c != '"') && (c != '\\')); ++i);
/* must use literal if not all QUOTED-CHAR */
if (i < s->size) psizedliteral (s,st);
else psizedquoted (s);
}
else psizedliteral (s,st);
}
/* Print sized text as literal or quoted string
* Accepts: sized text
*/
void psizedastring (SIZEDTEXT *s)
{
unsigned long i;
unsigned int atomp = s->size ? T : NIL;
for (i = 0; i < s->size; i++){/* check if must use literal */
if (!(s->data[i] & 0xe0) || (s->data[i] & 0x80) ||
(s->data[i] == '"') || (s->data[i] == '\\')) {
psizedliteral (s,NIL);
return;
}
else switch (s->data[i]) { /* else see if any atom-specials */
case '(': case ')': case '{': case ' ':
case '%': case '*': /* list-wildcards */
case ']': /* resp-specials */
/* CTL and quoted-specials in literal check */
atomp = NIL; /* not an atom */
}
}
if (atomp) ptext (s,NIL); /* print as atom */
else psizedquoted (s); /* print as quoted string */
}
/* Print string list
* Accepts: string list
*/
void pastringlist (STRINGLIST *s)
{
PBOUT ('('); /* start list */
do {
psizedastring (&s->text); /* output list member */
if (s->next) PBOUT (' ');
} while (s = s->next);
PBOUT (')'); /* terminate list */
}
/* Print nstring or list of strings
* Accepts: string / string list
*/
void pnstringorlist (STRINGLIST *s)
{
if (!s) PSOUT ("NIL"); /* no argument given */
else if (s->next) { /* output list as list of strings*/
PBOUT ('('); /* start list */
do { /* output list member */
psizedstring (&s->text,NIL);
if (s->next) PBOUT (' ');
} while (s = s->next);
PBOUT (')'); /* terminate list */
}
/* and single-element list as string */
else psizedstring (&s->text,NIL);
}
/* Print body part string
* Accepts: message number
* body part id (note: must have space at end to append stuff)
* sized text of string
* alternative stringstruct of string
* text printing arguments
*/
void pbodypartstring (unsigned long msgno,char *id,SIZEDTEXT *st,STRING *bs,
TEXTARGS *ta)
{
int f = mail_elt (stream,msgno)->seen;
/* ignore stringstruct if non-initialized */
if (bs && !bs->curpos) bs = NIL;
if (ta && st->size) { /* only if have useful data */
/* partial specifier */
if (ta->first || ta->last) sprintf (id + strlen (id),"<%lu>",ta->first);
/* in case first byte beyond end of text */
if (st->size <= ta->first) st->size = ta->first = 0;
else {
if (st->data) { /* offset and truncate */
st->data += ta->first; /* move to desired position */
st->size -= ta->first; /* reduced size */
}
else if (bs && (SIZE (bs) >= ta->first))
SETPOS (bs,ta->first + GETPOS (bs));
else st->size = 0; /* shouldn't happen */
if (ta->last && (st->size > ta->last)) st->size = ta->last;
}
}
PSOUT (id);
PBOUT (' ');
psizedstring (st,bs); /* output string */
changed_flags (msgno,f); /* and changed flags */
}
/* RFC 3501 technically forbids NULs in literals. Normally, the delivering
* MTA would take care of MIME converting the message text so that it is
* NUL-free. If it doesn't, then we have the choice of either violating
* IMAP by sending NULs, corrupting the data, or going to lots of work to do
* MIME conversion in the IMAP server.
*/
/* Print raw sized text
* Accepts: sizedtext
*/
void ptext (SIZEDTEXT *txt,STRING *st)
{
unsigned char c,*s;
unsigned long i = txt->size;
if (s = txt->data) while (i && ((PBOUT ((c = *s++) ? c : 0x80) != EOF))) --i;
else if (st) while (i && (PBOUT ((c = SNX (st)) ? c : 0x80) != EOF)) --i;
/* failed to complete? */
if (i) ioerror (stdout,"writing text");
}
/* Print thread
* Accepts: thread
*/
void pthread (THREADNODE *thr)
{
THREADNODE *t;
while (thr) { /* for each branch */
PBOUT ('('); /* open branch */
if (thr->num) { /* first node message number */
pnum (thr->num);
if (t = thr->next) { /* any subsequent nodes? */
PBOUT (' ');
while (t) { /* for each subsequent node */
if (t->branch) { /* branches? */
pthread (t); /* yes, recurse to do branch */
t = NIL; /* done */
}
else { /* just output this number */
pnum (t->num);
t = t->next; /* and do next message */
}
if (t) PBOUT (' '); /* delimit if more to come */
}
}
}
else pthread (thr->next); /* nest for dummy */
PBOUT (')'); /* done with this branch */
thr = thr->branch; /* do next branch */
}
}
/* Print capabilities
* Accepts: option flag
*/
void pcapability (long flag)
{
unsigned long i;
char *s;
struct stat sbuf;
AUTHENTICATOR *auth;
THREADER *thr = (THREADER *) mail_parameters (NIL,GET_THREADERS,NIL);
/* always output protocol level */
PSOUT ("CAPABILITY IMAP4REV1 I18NLEVEL=1 LITERAL+");
#ifdef NETSCAPE_BRAIN_DAMAGE
PSOUT (" X-NETSCAPE");
#endif
if (flag >= 0) { /* want post-authentication capabilities? */
PSOUT (" IDLE UIDPLUS NAMESPACE CHILDREN MAILBOX-REFERRALS BINARY UNSELECT ESEARCH WITHIN SCAN SORT");
while (thr) { /* threaders */
PSOUT (" THREAD=");
PSOUT (thr->name);
thr = thr->next;
}
if (!anonymous) PSOUT (" MULTIAPPEND");
}
if (flag <= 0) { /* want pre-authentication capabilities? */
PSOUT (" SASL-IR LOGIN-REFERRALS");
if (s = ssl_start_tls (NIL)) fs_give ((void **) &s);
else PSOUT (" STARTTLS");
/* disable plaintext */
if (!(i = !mail_parameters (NIL,GET_DISABLEPLAINTEXT,NIL)))
PSOUT (" LOGINDISABLED");
for (auth = mail_lookup_auth (1); auth; auth = auth->next)
if (auth->server && !(auth->flags & AU_DISABLE) &&
!(auth->flags & AU_HIDE) && (i || (auth->flags & AU_SECURE))) {
PSOUT (" AUTH=");
PSOUT (auth->name);
}
if (!stat (ANOFILE,&sbuf)) PSOUT (" AUTH=ANONYMOUS");
}
}
/* Anonymous users may only use these mailboxes in these namespaces */
char *oktab[] = {"#news.", "#ftp/", "#public/", 0};
/* Check if mailbox name is OK
* Accepts: reference name
* mailbox name
*/
long nameok (char *ref,char *name)
{
int i;
unsigned char *s,*t;
if (!name) return NIL; /* failure if missing name */
if (!anonymous) return T; /* otherwise OK if not anonymous */
/* validate reference */
if (ref && ((*ref == '#') || (*ref == '{')))
for (i = 0; oktab[i]; i++) {
for (s = ref, t = oktab[i]; *t && !compare_uchar (*s,*t); s++, t++);
if (!*t) { /* reference OK */
if (*name == '#') break;/* check name if override */
else return T; /* otherwise done */
}
}
/* ordinary names are OK */
if ((*name != '#') && (*name != '{')) return T;
for (i = 0; oktab[i]; i++) { /* validate mailbox */
for (s = name, t = oktab[i]; *t && !compare_uchar (*s,*t); s++, t++);
if (!*t) return T; /* name is OK */
}
response = "%.80s NO Anonymous may not %.80s this name\015\012";
return NIL;
}
/* Convert possible BBoard name to actual name
* Accepts: command
* mailbox name
* Returns: maibox name
*/
char *bboardname (char *cmd,char *name)
{
if (cmd[0] == 'B') { /* want bboard? */
char *s = litstk[litsp++] = (char *) fs_get (strlen (name) + 9);
sprintf (s,"#public/%s",(*name == '/') ? name+1 : name);
name = s;
}
return name;
}
/* Test if name is news proxy
* Accepts: name
* Returns: T if news proxy, NIL otherwise
*/
long isnewsproxy (char *name)
{
return (nntpproxy && (name[0] == '#') &&
((name[1] == 'N') || (name[1] == 'n')) &&
((name[2] == 'E') || (name[2] == 'e')) &&
((name[3] == 'W') || (name[3] == 'w')) &&
((name[4] == 'S') || (name[4] == 's')) && (name[5] == '.')) ?
LONGT : NIL;
}
/* News proxy generate canonical pattern
* Accepts: reference
* pattern
* buffer to return canonical pattern
* Returns: T on success with pattern in buffer, NIL on failure
*/
long newsproxypattern (char *ref,char *pat,char *pattern,long flag)
{
if (!nntpproxy) return NIL;
if (strlen (ref) > NETMAXMBX) {
sprintf (pattern,"Invalid reference specification: %.80s",ref);
mm_log (pattern,ERROR);
return NIL;
}
if (strlen (pat) > NETMAXMBX) {
sprintf (pattern,"Invalid pattern specification: %.80s",pat);
mm_log (pattern,ERROR);
return NIL;
}
if (flag) { /* prepend proxy specifier */
sprintf (pattern,"{%.300s/nntp}",nntpproxy);
pattern += strlen (pattern);
}
if (*ref) { /* have a reference */
strcpy (pattern,ref); /* copy reference to pattern */
/* # overrides mailbox field in reference */
if (*pat == '#') strcpy (pattern,pat);
/* pattern starts, reference ends, with . */
else if ((*pat == '.') && (pattern[strlen (pattern) - 1] == '.'))
strcat (pattern,pat + 1); /* append, omitting one of the period */
else strcat (pattern,pat); /* anything else is just appended */
}
else strcpy (pattern,pat); /* just have basic name */
return isnewsproxy (pattern);
}
/* IMAP4rev1 Authentication responder
* Accepts: challenge
* length of challenge
* pointer to response length return location if non-NIL
* Returns: response
*/
#define RESPBUFLEN 8*MAILTMPLEN
char *imap_responder (void *challenge,unsigned long clen,unsigned long *rlen)
{
unsigned long i,j;
unsigned char *t,resp[RESPBUFLEN];
if (initial) { /* initial response given? */
if (clen) return NIL; /* not permitted */
/* set up response */
i = strlen ((char *) (t = initial));
initial = NIL; /* no more initial response */
if ((*t == '=') && !t[1]) { /* SASL-IR does this for 0-length response */
if (rlen) *rlen = 0; /* set length zero if empty */
return cpystr (""); /* and return empty string as response */
}
}
else { /* issue challenge, get response */
PSOUT ("+ ");
for (t = rfc822_binary ((void *) challenge,clen,&i),j = 0; j < i; j++)
if (t[j] > ' ') PBOUT (t[j]);
fs_give ((void **) &t);
CRLF;
PFLUSH (); /* dump output buffer */
/* slurp response buffer */
slurp ((char *) resp,RESPBUFLEN,INPUTTIMEOUT);
if (!(t = (unsigned char *) strchr ((char *) resp,'\012')))
return (char *) flush ();
if (t[-1] == '\015') --t; /* remove CR */
*t = '\0'; /* tie off buffer */
if (resp[0] == '*') {
cancelled = T;
return NIL;
}
i = t - resp; /* length of response */
t = resp; /* set up for return call */
}
return (i % 4) ? NIL : /* return if valid BASE64 */
(char *) rfc822_base64 (t,i,rlen ? rlen : &i);
}
/* Proxy copy across mailbox formats
* Accepts: mail stream
* sequence to copy on this stream
* destination mailbox
* option flags
* Returns: T if success, else NIL
*/
long proxycopy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
{
MAILSTREAM *ts;
STRING st;
MSGDATA md;
SEARCHSET *set;
char tmp[MAILTMPLEN];
unsigned long i,j;
md.stream = stream;
md.msgno = 0;
md.flags = md.date = NIL;
md.message = &st;
/* Currently ignores CP_MOVE and CP_DEBUG */
if (!((options & CP_UID) ? /* validate sequence */
mail_uid_sequence (stream,sequence) : mail_sequence (stream,sequence)))
return NIL;
response = win; /* cancel previous errors */
if (lsterr) fs_give ((void **) &lsterr);
/* c-client clobbers sequence, use spare */
for (i = 1,j = 0,set = mail_newsearchset (); i <= nmsgs; i++)
if (mail_elt (stream,i)->spare = mail_elt (stream,i)->sequence) {
mail_append_set (set,mail_uid (stream,i));
if (!j) md.msgno = (j = i) - 1;
}
/* only if at least one message to copy */
if (j && !mail_append_multiple (NIL,mailbox,proxy_append,(void *) &md)) {
response = trycreate ? losetry : lose;
if (set) mail_free_searchset (&set);
return NIL;
}
if (caset) csset = set; /* set for return value now */
else if (set) mail_free_searchset (&set);
response = win; /* stomp any previous babble */
if (md.msgno) { /* get new driver name if was dummy */
sprintf (tmp,"Cross-format (%.80s -> %.80s) COPY completed",
stream->dtb->name,(ts = mail_open (NIL,mailbox,OP_PROTOTYPE)) ?
ts->dtb->name : "unknown");
mm_log (tmp,NIL);
}
return LONGT;
}
/* Proxy append message callback
* Accepts: MAIL stream
* append data package
* pointer to return initial flags
* pointer to return message internal date
* pointer to return stringstruct of message or NIL to stop
* Returns: T if success (have message or stop), NIL if error
*/
long proxy_append (MAILSTREAM *stream,void *data,char **flags,char **date,
STRING **message)
{
MESSAGECACHE *elt;
unsigned long i;
char *s,*t,tmp[MAILTMPLEN];
MSGDATA *md = (MSGDATA *) data;
if (md->flags) fs_give ((void **) &md->flags);
if (md->date) fs_give ((void **) &md->date);
*message = NIL; /* assume all done */
*flags = *date = NIL;
while (++md->msgno <= nmsgs)
if ((elt = mail_elt (md->stream,md->msgno))->spare) {
if (!(elt->valid && elt->day)) {
sprintf (tmp,"%lu",md->msgno);
mail_fetch_fast (md->stream,tmp,NIL);
}
memset (s = tmp,0,MAILTMPLEN);
/* copy flags */
if (elt->seen) strcat (s," \\Seen");
if (elt->deleted) strcat (s," \\Deleted");
if (elt->flagged) strcat (s," \\Flagged");
if (elt->answered) strcat (s," \\Answered");
if (elt->draft) strcat (s," \\Draft");
if (i = elt->user_flags) do
if ((t = md->stream->user_flags[find_rightmost_bit (&i)]) && *t &&
(strlen (t) < ((size_t) (MAILTMPLEN-((s += strlen (s))+2-tmp))))) {
*s++ = ' '; /* space delimiter */
strcpy (s,t);
} while (i); /* until no more user flags */
*message = md->message; /* set up return values */
*flags = md->flags = cpystr (tmp + 1);
*date = md->date = cpystr (mail_date (tmp,elt));
INIT (md->message,msg_string,(void *) md,elt->rfc822_size);
break; /* process this message */
}
return LONGT;
}
/* Append message callback
* Accepts: MAIL stream
* append data package
* pointer to return initial flags
* pointer to return message internal date
* pointer to return stringstruct of message or NIL to stop
* Returns: T if success (have message or stop), NIL if error
*/
long append_msg (MAILSTREAM *stream,void *data,char **flags,char **date,
STRING **message)
{
unsigned long i,j;
char *t;
APPENDDATA *ad = (APPENDDATA *) data;
unsigned char *arg = ad->arg;
/* flush text of previous message */
if (t = ad->flags) fs_give ((void **) &ad->flags);
if (t = ad->date) fs_give ((void **) &ad->date);
if (t = ad->msg) fs_give ((void **) &ad->msg);
*flags = *date = NIL; /* assume no flags or date */
if (t) { /* have previous message? */
if (!*arg) { /* if least one message, and no more coming */
*message = NIL; /* set stop */
return LONGT; /* return success */
}
else if (*arg++ != ' ') { /* must have a delimiter to next argument */
response = misarg; /* oops */
return NIL;
}
}
*message = ad->message; /* return pointer to message stringstruct */
if (*arg == '(') { /* parse optional flag list */
t = ++arg; /* pointer to flag list contents */
while (*arg && (*arg != ')')) arg++;
if (*arg) *arg++ = '\0';
if (*arg == ' ') arg++;
*flags = ad->flags = cpystr (t);
}
/* parse optional date */
if (*arg == '"') *date = ad->date = cpystr (snarf (&arg));
if (!arg || (*arg != '{')) /* parse message */
response = "%.80s BAD Missing literal in %.80s\015\012";
else if (!isdigit (arg[1]))
response = "%.80s BAD Missing message to %.80s\015\012";
else if (!(i = strtoul (arg+1,&t,10)))
response = "%.80s NO Empty message to %.80s\015\012";
else if (i > MAXAPPENDTXT) /* maybe relax this a little */
response = "%.80s NO Excessively large message to %.80s\015\012";
else if (((*t == '+') && (t[1] == '}') && !t[2]) || ((*t == '}') && !t[1])) {
/* get a literal buffer */
inliteral (ad->msg = (char *) fs_get (i+1),i);
/* get new command tail */
slurp (ad->arg,CMDLEN - (ad->arg - cmdbuf),INPUTTIMEOUT);
if (strchr (ad->arg,'\012')) {
/* reset strtok mechanism, tie off if done */
if (!strtok (ad->arg,"\015\012")) *ad->arg = '\0';
/* possible LITERAL+? */
if (((j = strlen (ad->arg)) > 3) && (ad->arg[j - 1] == '}') &&
(ad->arg[j - 2] == '+') && isdigit (ad->arg[j - 3])) {
/* back over possible count */
for (j -= 4; j && isdigit (ad->arg[j]); j--);
if (ad->arg[j] == '{') {/* found a literal? */
litplus.ok = T; /* yes, note LITERAL+ in effect, set size */
litplus.size = strtoul (ad->arg + j + 1,NIL,10);
}
}
/* initialize stringstruct */
INIT (ad->message,mail_string,(void *) ad->msg,i);
return LONGT; /* ready to go */
}
flush (); /* didn't find end of line? */
fs_give ((void **) &ad->msg);
}
else response = badarg; /* not a literal */
return NIL; /* error */
}
/* Got COPY UID data
* Accepts: MAIL stream
* mailbox name
* UID validity
* source set of UIDs
* destination set of UIDs
*/
void copyuid (MAILSTREAM *stream,char *mailbox,unsigned long uidvalidity,
SEARCHSET *sourceset,SEARCHSET *destset)
{
if (cauidvalidity) fatal ("duplicate COPYUID/APPENDUID data");
cauidvalidity = uidvalidity;
csset = sourceset;
caset = destset;
}
/* Got APPEND UID data
* Accepts: mailbox name
* UID validity
* destination set of UIDs
*/
void appenduid (char *mailbox,unsigned long uidvalidity,SEARCHSET *set)
{
copyuid (NIL,mailbox,uidvalidity,NIL,set);
}
/* Got a referral
* Accepts: MAIL stream
* URL
* referral type code
*/
char *referral (MAILSTREAM *stream,char *url,long code)
{
if (lstref) fs_give ((void **) &lstref);
lstref = cpystr (url); /* set referral */
/* set error if not a logged in referral */
if (code != REFAUTH) response = lose;
if (!lsterr) lsterr = cpystr ("Try referral URL");
return NIL; /* don't chase referrals for now */
}
/* Co-routines from MAIL library */
/* Message matches a search
* Accepts: MAIL stream
* message number
*/
void mm_searched (MAILSTREAM *s,unsigned long msgno)
{
/* nothing to do here */
}
/* Message exists (i.e. there are that many messages in the mailbox)
* Accepts: MAIL stream
* message number
*/
void mm_exists (MAILSTREAM *s,unsigned long number)
{
/* note change in number of messages */
if ((s != tstream) && (nmsgs != number)) {
nmsgs = number; /* always update number of messages */
if (quell_events) existsquelled = T;
else {
PSOUT ("* ");
pnum (nmsgs);
PSOUT (" EXISTS\015\012");
}
recent = 0xffffffff; /* make sure update recent too */
}
}
/* Message expunged
* Accepts: MAIL stream
* message number
*/
void mm_expunged (MAILSTREAM *s,unsigned long number)
{
if (quell_events) fatal ("Impossible EXPUNGE event");
if (s != tstream) {
PSOUT ("* ");
pnum (number);
PSOUT (" EXPUNGE\015\012");
}
nmsgs--;
existsquelled = T; /* do EXISTS when command done */
}
/* Message status changed
* Accepts: MAIL stream
* message number
*/
void mm_flags (MAILSTREAM *s,unsigned long number)
{
if (s != tstream) mail_elt (s,number)->spare2 = T;
}
/* Mailbox found
* Accepts: hierarchy delimiter
* mailbox name
* attributes
*/
void mm_list (MAILSTREAM *stream,int delimiter,char *name,long attributes)
{
mm_list_work ("LIST",delimiter,name,attributes);
}
/* Subscribed mailbox found
* Accepts: hierarchy delimiter
* mailbox name
* attributes
*/
void mm_lsub (MAILSTREAM *stream,int delimiter,char *name,long attributes)
{
mm_list_work ("LSUB",delimiter,name,attributes);
}
/* Mailbox status
* Accepts: MAIL stream
* mailbox name
* mailbox status
*/
void mm_status (MAILSTREAM *stream,char *mailbox,MAILSTATUS *status)
{
if (!quell_events) {
char tmp[MAILTMPLEN];
tmp[0] = tmp[1] = '\0';
if (status->flags & SA_MESSAGES)
sprintf (tmp + strlen (tmp)," MESSAGES %lu",status->messages);
if (status->flags & SA_RECENT)
sprintf (tmp + strlen (tmp)," RECENT %lu",status->recent);
if (status->flags & SA_UNSEEN)
sprintf (tmp + strlen (tmp)," UNSEEN %lu",status->unseen);
if (status->flags & SA_UIDNEXT)
sprintf (tmp + strlen (tmp)," UIDNEXT %lu",status->uidnext);
if (status->flags & SA_UIDVALIDITY)
sprintf (tmp + strlen(tmp)," UIDVALIDITY %lu",status->uidvalidity);
PSOUT ("* STATUS ");
pastring (mailbox);
PSOUT (" (");
PSOUT (tmp+1);
PBOUT (')');
CRLF;
}
}
/* Worker routine for LIST and LSUB
* Accepts: name of response
* hierarchy delimiter
* mailbox name
* attributes
*/
void mm_list_work (char *what,int delimiter,char *name,long attributes)
{
char *s;
if (!quell_events) {
char tmp[MAILTMPLEN];
if (finding) {
PSOUT ("* MAILBOX ");
PSOUT (name);
}
/* new form */
else if ((cmd[0] == 'R') || !(attributes & LATT_REFERRAL)) {
PSOUT ("* ");
PSOUT (what);
PSOUT (" (");
tmp[0] = tmp[1] = '\0';
if (attributes & LATT_NOINFERIORS) strcat (tmp," \\NoInferiors");
if (attributes & LATT_NOSELECT) strcat (tmp," \\NoSelect");
if (attributes & LATT_MARKED) strcat (tmp," \\Marked");
if (attributes & LATT_UNMARKED) strcat (tmp," \\UnMarked");
if (attributes & LATT_HASCHILDREN) strcat (tmp," \\HasChildren");
if (attributes & LATT_HASNOCHILDREN) strcat (tmp," \\HasNoChildren");
PSOUT (tmp+1);
switch (delimiter) {
case '\\': /* quoted delimiter */
case '"':
PSOUT (") \"\\");
PBOUT (delimiter);
PBOUT ('"');
break;
case '\0': /* no delimiter */
PSOUT (") NIL");
break;
default: /* unquoted delimiter */
PSOUT (") \"");
PBOUT (delimiter);
PBOUT ('"');
break;
}
PBOUT (' ');
/* output mailbox name */
if (proxylist && (s = strchr (name,'}'))) pastring (s+1);
else pastring (name);
}
CRLF;
}
}
/* Notification event
* Accepts: MAIL stream
* string to log
* error flag
*/
void mm_notify (MAILSTREAM *stream,char *string,long errflg)
{
SIZEDTEXT msg;
char *s,*code;
if (!quell_events && (!tstream || (stream != tstream))) {
switch (errflg) {
case NIL: /* information message, set as OK response */
if ((string[0] == '[') &&
((string[1] == 'T') || (string[1] == 't')) &&
((string[2] == 'R') || (string[2] == 'r')) &&
((string[3] == 'Y') || (string[3] == 'y')) &&
((string[4] == 'C') || (string[4] == 'c')) &&
((string[5] == 'R') || (string[5] == 'r')) &&
((string[6] == 'E') || (string[6] == 'e')) &&
((string[7] == 'A') || (string[7] == 'a')) &&
((string[8] == 'T') || (string[8] == 't')) &&
((string[9] == 'E') || (string[9] == 'e')) && (string[10] == ']'))
trycreate = T;
case BYE: /* some other server signing off */
case PARSE: /* parse glitch, output unsolicited OK */
code = "* OK ";
break;
case WARN: /* warning, output unsolicited NO (kludge!) */
code = "* NO ";
break;
case ERROR: /* error that broke command */
default: /* default should never happen */
code = "* BAD ";
break;
}
PSOUT (code);
msg.size = (s = strpbrk ((char *) (msg.data = (unsigned char *) string),
"\015\012")) ?
(s - string) : strlen (string);
PSOUTR (&msg);
CRLF;
PFLUSH (); /* let client see it immediately */
}
}
/* Log an event for the user to see
* Accepts: string to log
* error flag
*/
void mm_log (char *string,long errflg)
{
SIZEDTEXT msg;
char *s;
msg.size =
(s = strpbrk ((char *) (msg.data = (unsigned char *) string),"\015\012")) ?
(s - string) : strlen (string);
switch (errflg) {
case NIL: /* information message, set as OK response */
if (response == win) { /* only if no other response yet */
if (lsterr) { /* if there was a previous message */
if (!quell_events) {
PSOUT ("* OK "); /* blat it out */
PSOUT (lsterr);
CRLF;
PFLUSH (); /* let client see it immediately */
}
fs_give ((void **) &lsterr);
}
lsterr = cpystr (string); /* copy string for later use */
if (s) lsterr[s - string] = NIL;
}
break;
case PARSE: /* parse glitch, output unsolicited OK */
if (!quell_events) {
PSOUT ("* OK [PARSE] ");
PSOUTR (&msg);
CRLF;
PFLUSH (); /* let client see it immediately */
}
break;
case WARN: /* warning, output unsolicited NO */
/* ignore "Mailbox is empty" (KLUDGE!) */
if (strcmp (string,"Mailbox is empty")) {
if (lstwrn) { /* have previous warning? */
if (!quell_events) {
PSOUT ("* NO ");
PSOUT (lstwrn);
CRLF;
PFLUSH (); /* make sure client sees it immediately */
}
fs_give ((void **) &lstwrn);
}
lstwrn = cpystr (string); /* note last warning */
if (s) lstwrn[s - string] = NIL;
}
break;
case ERROR: /* error that broke command */
default: /* default should never happen */
response = trycreate ? losetry : lose;
if (lsterr) fs_give ((void **) &lsterr);
lsterr = cpystr (string); /* note last error */
if (s) lsterr[s - string] = NIL;
break;
}
}
/* Return last error
*/
char *lasterror (void)
{
if (lsterr) return lsterr;
if (lstwrn) return lstwrn;
return "<unknown>";
}
/* Log an event to debugging telemetry
* Accepts: string to log
*/
void mm_dlog (char *string)
{
mm_log (string,WARN); /* shouldn't happen normally */
}
/* Get user name and password for this host
* Accepts: parse of network user name
* where to return user name
* where to return password
* trial count
*/
void mm_login (NETMBX *mb,char *username,char *password,long trial)
{
/* set user name */
strncpy (username,*mb->user ? mb->user : (char *) user,NETMAXUSER);
strncpy (password,pass,256); /* and password */
}
/* About to enter critical code
* Accepts: stream
*/
void mm_critical (MAILSTREAM *s)
{
++critical;
}
/* About to exit critical code
* Accepts: stream
*/
void mm_nocritical (MAILSTREAM *s)
{
/* go non-critical, pending death? */
if (!--critical && (state == LOGOUT)) {
/* clean up iff needed */
if (s && (stream != s) && !s->lock && (s->dtb->flags & DR_XPOINT))
s = mail_close (s);
longjmp (jmpenv,1); /* die now */
}
}
/* Disk error found
* Accepts: stream
* system error code
* flag indicating that mailbox may be clobbered
* Returns: abort flag
*/
long mm_diskerror (MAILSTREAM *s,long errcode,long serious)
{
if (serious) { /* try your damnest if clobberage likely */
mm_notify (s,"Retrying to fix probable mailbox damage!",ERROR);
PFLUSH (); /* dump output buffer */
syslog (LOG_ALERT,
"Retrying after disk error user=%.80s host=%.80s mbx=%.80s: %.80s",
user ? (char *) user : "???",tcp_clienthost (),
(stream && stream->mailbox) ? stream->mailbox : "???",
strerror (errcode));
settimeout (0); /* make damn sure timeout disabled */
sleep (60); /* give it some time to clear up */
return NIL;
}
if (!quell_events) { /* otherwise die before more damage is done */
PSOUT ("* NO Disk error: ");
PSOUT (strerror (errcode));
CRLF;
}
return T;
}
/* Log a fatal error event
* Accepts: string to log
*/
void mm_fatal (char *string)
{
SIZEDTEXT msg;
char *s;
msg.size =
(s = strpbrk ((char *) (msg.data = (unsigned char *) string),"\015\012")) ?
(s - string) : strlen (string);
if (!quell_events) {
PSOUT ("* BYE [ALERT] IMAP4rev1 server crashing: ");
PSOUTR (&msg);
CRLF;
PFLUSH ();
}
syslog (LOG_ALERT,"Fatal error user=%.80s host=%.80s mbx=%.80s: %.80s",
user ? (char *) user : "???",tcp_clienthost (),
(stream && stream->mailbox) ? stream->mailbox : "???",string);
}
|