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/* ========================================================================
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* Copyright 1988-2006 University of Washington
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* ========================================================================
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* Program: Dummy routines
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* Author: Mark Crispin
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* Networks and Distributed Computing
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* Computing & Communications
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* University of Washington
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* Administration Building, AG-44
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* Internet: MRC@CAC.Washington.EDU
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* Last Edited: 17 October 2006
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extern int errno; /* just in case */
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/* Function prototypes */
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DRIVER *dummy_valid (char *name);
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void *dummy_parameters (long function,void *value);
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void dummy_list_work (MAILSTREAM *stream,char *dir,char *pat,char *contents,
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long dummy_listed (MAILSTREAM *stream,char delimiter,char *name,
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long attributes,char *contents);
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long dummy_subscribe (MAILSTREAM *stream,char *mailbox);
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MAILSTREAM *dummy_open (MAILSTREAM *stream);
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void dummy_close (MAILSTREAM *stream,long options);
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long dummy_ping (MAILSTREAM *stream);
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void dummy_check (MAILSTREAM *stream);
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long dummy_expunge (MAILSTREAM *stream,char *sequence,long options);
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long dummy_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options);
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long dummy_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
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/* Driver dispatch used by MAIL */
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DRIVER dummydriver = {
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"dummy", /* driver name */
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DR_LOCAL|DR_MAIL, /* driver flags */
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(DRIVER *) NIL, /* next driver */
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dummy_valid, /* mailbox is valid for us */
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dummy_parameters, /* manipulate parameters */
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dummy_scan, /* scan mailboxes */
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dummy_list, /* list mailboxes */
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dummy_lsub, /* list subscribed mailboxes */
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dummy_subscribe, /* subscribe to mailbox */
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NIL, /* unsubscribe from mailbox */
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dummy_create, /* create mailbox */
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dummy_delete, /* delete mailbox */
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dummy_rename, /* rename mailbox */
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mail_status_default, /* status of mailbox */
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dummy_open, /* open mailbox */
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dummy_close, /* close mailbox */
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NIL, /* fetch message "fast" attributes */
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NIL, /* fetch message flags */
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NIL, /* fetch overview */
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NIL, /* fetch message structure */
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NIL, /* fetch header */
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NIL, /* fetch message data */
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NIL, /* unique identifier */
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NIL, /* message number from UID */
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NIL, /* modify flags */
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NIL, /* per-message modify flags */
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NIL, /* search for message based on criteria */
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NIL, /* sort messages */
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NIL, /* thread messages */
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dummy_ping, /* ping mailbox to see if still alive */
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dummy_check, /* check for new messages */
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dummy_expunge, /* expunge deleted messages */
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dummy_copy, /* copy messages to another mailbox */
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dummy_append, /* append string message to mailbox */
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NIL /* garbage collect stream */
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/* prototype stream */
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MAILSTREAM dummyproto = {&dummydriver};
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/* Dummy validate mailbox
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* Accepts: mailbox name
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* Returns: our driver if name is valid, NIL otherwise
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DRIVER *dummy_valid (char *name)
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char *s,tmp[MAILTMPLEN];
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/* must be valid local mailbox */
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if (name && *name && (*name != '{') && (s = mailboxfile (tmp,name))) {
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/* indeterminate clearbox INBOX */
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if (!*s) return &dummydriver;
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else if (!stat (s,&sbuf)) switch (sbuf.st_mode & S_IFMT) {
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/* blackbox INBOX does not exist yet */
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else if (!compare_cstring (name,"INBOX")) return &dummydriver;
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/* Dummy manipulate driver parameters
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* Accepts: function code
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* function-dependent value
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* Returns: function-dependent return value
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void *dummy_parameters (long function,void *value)
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switch ((int) function) {
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if (value) ret = dummy_file ((char *) value,"INBOX");
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/* Dummy scan mailboxes
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* Accepts: mail stream
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void dummy_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents)
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char *s,test[MAILTMPLEN],file[MAILTMPLEN];
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if (!pat || !*pat) { /* empty pattern? */
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if (dummy_canonicalize (test,ref,"*")) {
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/* tie off name at root */
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if (s = strchr (test,'/')) *++s = '\0';
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dummy_listed (stream,'/',test,LATT_NOSELECT,NIL);
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/* get canonical form of name */
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else if (dummy_canonicalize (test,ref,pat)) {
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/* found any wildcards? */
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if (s = strpbrk (test,"%*")) {
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/* yes, copy name up to that point */
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strncpy (file,test,i = s - test);
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file[i] = '\0'; /* tie off */
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else strcpy (file,test); /* use just that name then */
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if (s = strrchr (file,'/')){/* find directory name */
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*++s = '\0'; /* found, tie off at that point */
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else if ((file[0] == '~') || (file[0] == '#')) s = file;
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dummy_list_work (stream,s,test,contents,0);
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/* always an INBOX */
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if (pmatch ("INBOX",ucase (test))) {
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/* done if have a dirfmt INBOX */
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for (drivers = (DRIVER *) mail_parameters (NIL,GET_DRIVERS,NIL);
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drivers && !(!(drivers->flags & DR_DISABLE) &&
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(drivers->flags & DR_DIRFMT) &&
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(*drivers->valid) ("INBOX")); drivers = drivers->next);
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/* list INBOX appropriately */
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dummy_listed (stream,drivers ? '/' : NIL,"INBOX",
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drivers ? NIL : LATT_NOINFERIORS,contents);
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/* Dummy list mailboxes
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* Accepts: mail stream
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void dummy_list (MAILSTREAM *stream,char *ref,char *pat)
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dummy_scan (stream,ref,pat,NIL);
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/* Dummy list subscribed mailboxes
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* Accepts: mail stream
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void dummy_lsub (MAILSTREAM *stream,char *ref,char *pat)
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char *s,*t,test[MAILTMPLEN],tmp[MAILTMPLEN];
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int showuppers = pat[strlen (pat) - 1] == '%';
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/* get canonical form of name */
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if (dummy_canonicalize (test,ref,pat) && (s = sm_read (&sdb))) do
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if (!compare_cstring (s,"INBOX") &&
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pmatch ("INBOX",ucase (strcpy (tmp,test))))
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mm_lsub (stream,NIL,s,LATT_NOINFERIORS);
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else if (pmatch_full (s,test,'/')) mm_lsub (stream,'/',s,NIL);
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else while (showuppers && (t = strrchr (s,'/'))) {
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*t = '\0'; /* tie off the name */
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if (pmatch_full (s,test,'/')) mm_lsub (stream,'/',s,LATT_NOSELECT);
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while (s = sm_read (&sdb)); /* until no more subscriptions */
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/* Dummy subscribe to mailbox
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* Accepts: mail stream
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* mailbox to add to subscription list
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* Returns: T on success, NIL on failure
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long dummy_subscribe (MAILSTREAM *stream,char *mailbox)
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char *s,tmp[MAILTMPLEN];
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/* must be valid local mailbox */
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if ((s = mailboxfile (tmp,mailbox)) && *s && !stat (s,&sbuf) &&
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((sbuf.st_mode & S_IFMT) == S_IFREG)) return sm_subscribe (mailbox);
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sprintf (tmp,"Can't subscribe %.80s: not a mailbox",mailbox);
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/* Dummy list mailboxes worker routine
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* Accepts: mail stream
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* directory name to search
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void dummy_list_work (MAILSTREAM *stream,char *dir,char *pat,char *contents,
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char tmp[MAILTMPLEN],path[MAILTMPLEN];
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/* punt if bogus name */
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if (!mailboxdir (tmp,dir,NIL)) return;
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if (dp = opendir (tmp)) { /* do nothing if can't open directory */
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/* see if a non-namespace directory format */
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for (drivers = (DRIVER *) mail_parameters (NIL,GET_DRIVERS,NIL), dt = NIL;
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dir && !dt && drivers; drivers = drivers->next)
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if (!(drivers->flags & DR_DISABLE) && (drivers->flags & DR_DIRFMT) &&
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(*drivers->valid) (dir))
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dt = mail_parameters ((*drivers->open) (NIL),GET_DIRFMTTEST,NIL);
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/* list it if at top-level */
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if (!level && dir && pmatch_full (dir,pat,'/') && !pmatch (dir,"INBOX"))
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dummy_listed (stream,'/',dir,dt ? NIL : LATT_NOSELECT,contents);
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/* scan directory, ignore . and .. */
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if (!dir || dir[(len = strlen (dir)) - 1] == '/') while (d = readdir (dp))
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if ((!(dt && (*dt) (d->d_name))) &&
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((d->d_name[0] != '.') ||
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(((int) mail_parameters (NIL,GET_HIDEDOTFILES,NIL)) ? NIL :
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(d->d_name[1] && (((d->d_name[1] != '.') || d->d_name[2]))))) &&
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((len + strlen (d->d_name)) <= NETMAXMBX)) {
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/* see if name is useful */
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if (dir) sprintf (tmp,"%s%s",dir,d->d_name);
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else strcpy (tmp,d->d_name);
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/* make sure useful and can get info */
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if ((pmatch_full (strcpy (path,tmp),pat,'/') ||
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pmatch_full (strcat (path,"/"),pat,'/') || dmatch (path,pat,'/')) &&
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mailboxdir (path,dir,"x") && (len = strlen (path)) &&
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strcpy (path+len-1,d->d_name) && !stat (path,&sbuf)) {
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/* only interested in file type */
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switch (sbuf.st_mode & S_IFMT) {
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case S_IFDIR: /* directory? */
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/* form with trailing / */
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sprintf (path,"%s/",tmp);
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/* skip listing if INBOX */
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if (!pmatch (tmp,"INBOX")) {
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if (pmatch_full (tmp,pat,'/')) {
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if (!dummy_listed (stream,'/',tmp,LATT_NOSELECT,contents))
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/* try again with trailing / */
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else if (pmatch_full (path,pat,'/') &&
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!dummy_listed (stream,'/',tmp,LATT_NOSELECT,contents))
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if (dmatch (path,pat,'/') &&
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(level < (long) mail_parameters (NIL,GET_LISTMAXLEVEL,NIL)))
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dummy_list_work (stream,path,pat,contents,level+1);
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case S_IFREG: /* ordinary name */
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/* Must use ctime for systems that don't update mtime properly */
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if (pmatch_full (tmp,pat,'/') && compare_cstring (tmp,"INBOX"))
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dummy_listed (stream,'/',tmp,LATT_NOINFERIORS +
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((sbuf.st_size && (sbuf.st_atime < sbuf.st_ctime))?
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LATT_MARKED : LATT_UNMARKED),contents);
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closedir (dp); /* all done, flush directory */
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/* Scan file for contents
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* Accepts: driver to use
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* Returns: NIL if contents not found, T if found
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long scan_contents (DRIVER *dtb,char *name,char *contents,
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unsigned long csiz,unsigned long fsiz)
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scancontents_t sc = dtb ?
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(scancontents_t) (*dtb->parameters) (GET_SCANCONTENTS,NIL) : NIL;
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return (*(sc ? sc : dummy_scan_contents)) (name,contents,csiz,fsiz);
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/* Scan file for contents
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* Returns: NIL if contents not found, T if found
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#define BUFSIZE 4*MAILTMPLEN
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long dummy_scan_contents (char *name,char *contents,unsigned long csiz,
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unsigned long ssiz,bsiz;
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/* forget it if can't select or open */
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if ((fd = open (name,O_RDONLY,NIL)) >= 0) {
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/* get buffer including slop */
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buf = (char *) fs_get (BUFSIZE + (ssiz = 4 * ((csiz / 4) + 1)) + 1);
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memset (buf,'\0',ssiz); /* no slop area the first time */
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while (fsiz) { /* until end of file */
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read (fd,buf+ssiz,bsiz = min (fsiz,BUFSIZE));
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if (search ((unsigned char *) buf,bsiz+ssiz,
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(unsigned char *) contents,csiz)) break;
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memcpy (buf,buf+BUFSIZE,ssiz);
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fsiz -= bsiz; /* note that we read that much */
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fs_give ((void **) &buf); /* flush buffer */
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close (fd); /* finished with file */
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if (fsiz) return T; /* found */
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return NIL; /* not found */
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* Accepts: MAIL stream
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* hierarchy delimiter
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* contents to search before calling mm_list()
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* Returns: NIL if should abort hierarchy search, else T (currently always)
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long dummy_listed (MAILSTREAM *stream,char delimiter,char *name,
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long attributes,char *contents)
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char *s,tmp[MAILTMPLEN];
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/* don't \NoSelect dir if it has a driver */
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if ((attributes & LATT_NOSELECT) && (d = mail_valid (NIL,name,NIL)) &&
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(d != &dummydriver)) attributes &= ~LATT_NOSELECT;
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if (!contents || /* notify main program */
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(!(attributes & LATT_NOSELECT) && (csiz = strlen (contents)) &&
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(s = mailboxfile (tmp,name)) &&
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(*s || (s = mail_parameters (NIL,GET_INBOXPATH,tmp))) &&
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!stat (s,&sbuf) && (d || (csiz <= sbuf.st_size)) &&
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SAFE_SCAN_CONTENTS (d,tmp,contents,csiz,sbuf.st_size)))
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mm_list (stream,delimiter,name,attributes);
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/* Dummy create mailbox
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* Accepts: mail stream
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* mailbox name to create
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* Returns: T on success, NIL on failure
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long dummy_create (MAILSTREAM *stream,char *mailbox)
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char *s,tmp[MAILTMPLEN];
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if (!(compare_cstring (mailbox,"INBOX") && (s = dummy_file (tmp,mailbox)))) {
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sprintf (tmp,"Can't create %.80s: invalid name",mailbox);
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/* create the name, done if made directory */
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else if ((ret = dummy_create_path (stream,tmp,get_dir_protection(mailbox)))&&
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(s = strrchr (s,'/')) && !s[1]) return T;
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return ret ? set_mbx_protections (mailbox,tmp) : NIL;
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* Accepts: mail stream
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* path name to create
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* Returns: T on success, NIL on failure
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long dummy_create_path (MAILSTREAM *stream,char *path,long dirmode)
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char c,*s,tmp[MAILTMPLEN];
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char *t = strrchr (path,'/');
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int wantdir = t && !t[1];
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int mask = umask (0);
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if (wantdir) *t = '\0'; /* flush trailing delimiter for directory */
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if (s = strrchr (path,'/')) { /* found superior to this name? */
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c = *++s; /* remember first character of inferior */
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*s = '\0'; /* tie off to get just superior */
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/* name doesn't exist, create it */
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if ((stat (path,&sbuf) || ((sbuf.st_mode & S_IFMT) != S_IFDIR)) &&
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!dummy_create_path (stream,path,dirmode)) {
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umask (mask); /* restore mask */
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*s = c; /* restore full name */
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if (wantdir) { /* want to create directory? */
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ret = !mkdir (path,(int) dirmode);
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*t = '/'; /* restore directory delimiter */
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else if ((fd = open (path,O_WRONLY|O_CREAT|O_EXCL,
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(int) mail_parameters(NIL,GET_MBXPROTECTION,NIL))) >= 0)
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if (!ret) { /* error? */
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sprintf (tmp,"Can't create mailbox node %.80s: %.80s",path,strerror (errno));
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umask (mask); /* restore mask */
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return ret; /* return status */
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/* Dummy delete mailbox
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* Accepts: mail stream
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* mailbox name to delete
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* Returns: T on success, NIL on failure
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long dummy_delete (MAILSTREAM *stream,char *mailbox)
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char *s,tmp[MAILTMPLEN];
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if (!(s = dummy_file (tmp,mailbox))) {
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sprintf (tmp,"Can't delete - invalid name: %.80s",s);
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/* no trailing / (workaround BSD kernel bug) */
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if ((s = strrchr (tmp,'/')) && !s[1]) *s = '\0';
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if (stat (tmp,&sbuf) || ((sbuf.st_mode & S_IFMT) == S_IFDIR) ?
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rmdir (tmp) : unlink (tmp)) {
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sprintf (tmp,"Can't delete mailbox %.80s: %.80s",mailbox,strerror (errno));
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return T; /* return success */
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/* Mail rename mailbox
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* Accepts: mail stream
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* Returns: T on success, NIL on failure
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long dummy_rename (MAILSTREAM *stream,char *old,char *newname)
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char c,*s,tmp[MAILTMPLEN],mbx[MAILTMPLEN],oldname[MAILTMPLEN];
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/* no trailing / allowed */
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if (!dummy_file (oldname,old) || !(s = dummy_file (mbx,newname)) ||
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stat (oldname,&sbuf) || ((s = strrchr (s,'/')) && !s[1] &&
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((sbuf.st_mode & S_IFMT) != S_IFDIR))) {
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sprintf (mbx,"Can't rename %.80s to %.80s: invalid name",old,newname);
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if (s) { /* found a directory delimiter? */
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if (!s[1]) *s = '\0'; /* ignore trailing delimiter */
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else { /* found superior to destination name? */
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c = *++s; /* remember first character of inferior */
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*s = '\0'; /* tie off to get just superior */
531
/* name doesn't exist, create it */
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if ((stat (mbx,&sbuf) || ((sbuf.st_mode & S_IFMT) != S_IFDIR)) &&
533
!dummy_create (stream,mbx)) return NIL;
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*s = c; /* restore full name */
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/* rename of non-ex INBOX creates dest */
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if (!compare_cstring (old,"INBOX") && stat (oldname,&sbuf))
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return dummy_create (NIL,mbx);
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if (rename (oldname,mbx)) {
541
sprintf (tmp,"Can't rename mailbox %.80s to %.80s: %.80s",old,newname,
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return T; /* return success */
550
* Accepts: stream to open
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* Returns: stream on success, NIL on failure
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MAILSTREAM *dummy_open (MAILSTREAM *stream)
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char err[MAILTMPLEN],tmp[MAILTMPLEN];
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/* OP_PROTOTYPE call */
560
if (!stream) return &dummyproto;
561
err[0] = '\0'; /* no error message yet */
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/* can we open the file? */
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if (!dummy_file (tmp,stream->mailbox))
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sprintf (err,"Can't open this name: %.80s",stream->mailbox);
565
else if ((fd = open (tmp,O_RDONLY,NIL)) < 0) {
566
/* no, error unless INBOX */
567
if (compare_cstring (stream->mailbox,"INBOX"))
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sprintf (err,"%.80s: %.80s",strerror (errno),stream->mailbox);
570
else { /* file had better be empty then */
571
fstat (fd,&sbuf); /* sniff at its size */
573
if ((sbuf.st_mode & S_IFMT) != S_IFREG)
574
sprintf (err,"Can't open %.80s: not a selectable mailbox",
576
else if (sbuf.st_size) /* bogus format if non-empty */
577
sprintf (err,"Can't open %.80s (file %.80s): not in valid mailbox format",
578
stream->mailbox,tmp);
580
if (err[0]) { /* if an error happened */
581
MM_LOG (err,stream->silent ? WARN : ERROR);
584
else if (!stream->silent) { /* only if silence not requested */
585
mail_exists (stream,0); /* say there are 0 messages */
586
mail_recent (stream,0); /* and certainly no recent ones! */
587
stream->uid_validity = time (0);
589
stream->inbox = T; /* note that it's an INBOX */
590
return stream; /* return success */
595
* Accepts: MAIL stream
599
void dummy_close (MAILSTREAM *stream,long options)
601
/* return silently */
604
/* Dummy ping mailbox
605
* Accepts: MAIL stream
606
* Returns: T if stream alive, else NIL
609
long dummy_ping (MAILSTREAM *stream)
612
if (time (0) >= /* time to do another test? */
613
((time_t) (stream->gensym +
614
(long) mail_parameters (NIL,GET_SNARFINTERVAL,NIL)))) {
615
/* has mailbox format changed? */
616
if ((test = mail_open (NIL,stream->mailbox,OP_PROTOTYPE)) &&
617
(test->dtb != stream->dtb) &&
618
(test = mail_open (NIL,stream->mailbox,NIL))) {
619
/* preserve some resources */
620
test->original_mailbox = stream->original_mailbox;
621
stream->original_mailbox = NIL;
622
test->sparep = stream->sparep;
623
stream->sparep = NIL;
624
test->sequence = stream->sequence;
625
mail_close ((MAILSTREAM *) /* flush resources used by dummy stream */
626
memcpy (fs_get (sizeof (MAILSTREAM)),stream,
627
sizeof (MAILSTREAM)));
628
/* swap the streams */
629
memcpy (stream,test,sizeof (MAILSTREAM));
630
fs_give ((void **) &test);/* flush test now that copied */
631
/* make sure application knows */
632
mail_exists (stream,stream->recent = stream->nmsgs);
634
/* still hasn't changed */
635
else stream->gensym = time (0);
641
/* Dummy check mailbox
642
* Accepts: MAIL stream
643
* No-op for readonly files, since read/writer can expunge it from under us!
646
void dummy_check (MAILSTREAM *stream)
648
dummy_ping (stream); /* invoke ping */
652
/* Dummy expunge mailbox
653
* Accepts: MAIL stream
654
* sequence to expunge if non-NIL
659
long dummy_expunge (MAILSTREAM *stream,char *sequence,long options)
664
/* Dummy copy message(s)
665
* Accepts: MAIL stream
667
* destination mailbox
669
* Returns: T if copy successful, else NIL
672
long dummy_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
674
if ((options & CP_UID) ? mail_uid_sequence (stream,sequence) :
675
mail_sequence (stream,sequence)) fatal ("Impossible dummy_copy");
680
/* Dummy append message string
681
* Accepts: mail stream
682
* destination mailbox
683
* append callback function
685
* Returns: T on success, NIL on failure
688
long dummy_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
693
char tmp[MAILTMPLEN];
694
MAILSTREAM *ts = default_proto (T);
695
if (compare_cstring (mailbox,"INBOX") && dummy_file (tmp,mailbox) &&
696
((fd = open (tmp,O_RDONLY,NIL)) < 0)) {
697
if ((e = errno) == ENOENT) /* failed, was it no such file? */
698
MM_NOTIFY (stream,"[TRYCREATE] Must create mailbox before append",NIL);
699
sprintf (tmp,"%.80s: %.80s",strerror (e),mailbox);
700
MM_LOG (tmp,ERROR); /* pass up error */
701
return NIL; /* always fails */
703
if (fd >= 0) { /* found file? */
704
fstat (fd,&sbuf); /* get its size */
705
close (fd); /* toss out the fd */
706
if (sbuf.st_size) ts = NIL; /* non-empty file? */
708
if (ts) return (*ts->dtb->append) (stream,mailbox,af,data);
709
sprintf (tmp,"Indeterminate mailbox format: %.80s",mailbox);
714
/* Dummy mail generate file string
715
* Accepts: temporary buffer to write into
716
* mailbox name string
717
* Returns: local file string or NIL if failure
720
char *dummy_file (char *dst,char *name)
722
char *s = mailboxfile (dst,name);
723
/* return our standard inbox */
724
return (s && !*s) ? strcpy (dst,sysinbox ()) : s;
728
/* Dummy canonicalize name
729
* Accepts: buffer to write name
732
* Returns: T if success, NIL if failure
735
long dummy_canonicalize (char *tmp,char *ref,char *pat)
739
if (ref) { /* preliminary reference check */
740
if (*ref == '{') return NIL;/* remote reference not allowed */
741
else if (!*ref) ref = NIL; /* treat empty reference as no reference */
744
case '#': /* namespace name */
745
if (mailboxfile (tmp,pat)) strcpy (tmp,pat);
746
else return NIL; /* unknown namespace */
748
case '{': /* remote names not allowed */
750
case '/': /* rooted name */
751
case '~': /* home directory name */
752
if (!ref || (*ref != '#')) {/* non-namespace reference? */
753
strcpy (tmp,pat); /* yes, ignore */
757
default: /* apply reference for all other names */
758
if (!ref) strcpy (tmp,pat); /* just copy if no namespace */
759
else if ((*ref != '#') || mailboxfile (tmp,ref)) {
760
/* wants root of name? */
761
if (*pat == '/') strcpy (strchr (strcpy (tmp,ref),'/'),pat);
762
/* otherwise just append */
763
else sprintf (tmp,"%s%s",ref,pat);
765
else return NIL; /* unknown namespace */
767
/* count wildcards */
768
for (i = 0, s = tmp; *s; *s++) if ((*s == '*') || (*s == '%')) ++i;
769
if (i > MAXWILDCARDS) { /* ridiculous wildcarding? */
770
MM_LOG ("Excessive wildcards in LIST/LSUB",ERROR);
added
removed
imap/src/osdep/amiga/dummy.c
