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author | Eduardo Chappa <echappa@gmx.com> | 2013-02-03 00:59:38 -0700 |
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committer | Eduardo Chappa <echappa@gmx.com> | 2013-02-03 00:59:38 -0700 |
commit | 094ca96844842928810f14844413109fc6cdd890 (patch) | |
tree | e60efbb980f38ba9308ccb4fb2b77b87bbc115f3 /imap/src/osdep/amiga/dummy.c | |
download | alpine-094ca96844842928810f14844413109fc6cdd890.tar.xz |
Initial Alpine Version
Diffstat (limited to 'imap/src/osdep/amiga/dummy.c')
-rw-r--r-- | imap/src/osdep/amiga/dummy.c | 809 |
1 files changed, 809 insertions, 0 deletions
diff --git a/imap/src/osdep/amiga/dummy.c b/imap/src/osdep/amiga/dummy.c new file mode 100644 index 00000000..b003a0ba --- /dev/null +++ b/imap/src/osdep/amiga/dummy.c @@ -0,0 +1,809 @@ +/* ======================================================================== + * Copyright 1988-2007 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: Dummy routines + * + * Author: Mark Crispin + * Networks and Distributed Computing + * Computing & Communications + * University of Washington + * Administration Building, AG-44 + * Seattle, WA 98195 + * Internet: MRC@CAC.Washington.EDU + * + * Date: 9 May 1991 + * Last Edited: 1 June 2007 + */ + + +#include <stdio.h> +#include <ctype.h> +#include <errno.h> +extern int errno; /* just in case */ +#include "mail.h" +#include "osdep.h" +#include <pwd.h> +#include <sys/stat.h> +#include "dummy.h" +#include "misc.h" + +/* Function prototypes */ + +DRIVER *dummy_valid (char *name); +void *dummy_parameters (long function,void *value); +void dummy_list_work (MAILSTREAM *stream,char *dir,char *pat,char *contents, + long level); +long dummy_listed (MAILSTREAM *stream,char delimiter,char *name, + long attributes,char *contents); +long dummy_subscribe (MAILSTREAM *stream,char *mailbox); +MAILSTREAM *dummy_open (MAILSTREAM *stream); +void dummy_close (MAILSTREAM *stream,long options); +long dummy_ping (MAILSTREAM *stream); +void dummy_check (MAILSTREAM *stream); +long dummy_expunge (MAILSTREAM *stream,char *sequence,long options); +long dummy_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options); +long dummy_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data); + +/* Dummy routines */ + + +/* Driver dispatch used by MAIL */ + +DRIVER dummydriver = { + "dummy", /* driver name */ + DR_LOCAL|DR_MAIL, /* driver flags */ + (DRIVER *) NIL, /* next driver */ + dummy_valid, /* mailbox is valid for us */ + dummy_parameters, /* manipulate parameters */ + dummy_scan, /* scan mailboxes */ + dummy_list, /* list mailboxes */ + dummy_lsub, /* list subscribed mailboxes */ + dummy_subscribe, /* subscribe to mailbox */ + NIL, /* unsubscribe from mailbox */ + dummy_create, /* create mailbox */ + dummy_delete, /* delete mailbox */ + dummy_rename, /* rename mailbox */ + mail_status_default, /* status of mailbox */ + dummy_open, /* open mailbox */ + dummy_close, /* close mailbox */ + NIL, /* fetch message "fast" attributes */ + NIL, /* fetch message flags */ + NIL, /* fetch overview */ + NIL, /* fetch message structure */ + NIL, /* fetch header */ + NIL, /* fetch text */ + NIL, /* fetch message data */ + NIL, /* unique identifier */ + NIL, /* message number from UID */ + NIL, /* modify flags */ + NIL, /* per-message modify flags */ + NIL, /* search for message based on criteria */ + NIL, /* sort messages */ + NIL, /* thread messages */ + dummy_ping, /* ping mailbox to see if still alive */ + dummy_check, /* check for new messages */ + dummy_expunge, /* expunge deleted messages */ + dummy_copy, /* copy messages to another mailbox */ + dummy_append, /* append string message to mailbox */ + NIL /* garbage collect stream */ +}; + + /* prototype stream */ +MAILSTREAM dummyproto = {&dummydriver}; + +/* Dummy validate mailbox + * Accepts: mailbox name + * Returns: our driver if name is valid, NIL otherwise + */ + +DRIVER *dummy_valid (char *name) +{ + char *s,tmp[MAILTMPLEN]; + struct stat sbuf; + /* must be valid local mailbox */ + if (name && *name && (*name != '{') && (s = mailboxfile (tmp,name))) { + /* indeterminate clearbox INBOX */ + if (!*s) return &dummydriver; + else if (!stat (s,&sbuf)) switch (sbuf.st_mode & S_IFMT) { + case S_IFREG: + case S_IFDIR: + return &dummydriver; + } + /* blackbox INBOX does not exist yet */ + else if (!compare_cstring (name,"INBOX")) return &dummydriver; + } + return NIL; +} + + +/* Dummy manipulate driver parameters + * Accepts: function code + * function-dependent value + * Returns: function-dependent return value + */ + +void *dummy_parameters (long function,void *value) +{ + void *ret = NIL; + switch ((int) function) { + case GET_INBOXPATH: + if (value) ret = dummy_file ((char *) value,"INBOX"); + break; + } + return ret; +} + +/* Dummy scan mailboxes + * Accepts: mail stream + * reference + * pattern to search + * string to scan + */ + +void dummy_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents) +{ + DRIVER *drivers; + char *s,test[MAILTMPLEN],file[MAILTMPLEN]; + long i; + if (!pat || !*pat) { /* empty pattern? */ + if (dummy_canonicalize (test,ref,"*")) { + /* tie off name at root */ + if (s = strchr (test,'/')) *++s = '\0'; + else test[0] = '\0'; + dummy_listed (stream,'/',test,LATT_NOSELECT,NIL); + } + } + /* get canonical form of name */ + else if (dummy_canonicalize (test,ref,pat)) { + /* found any wildcards? */ + if (s = strpbrk (test,"%*")) { + /* yes, copy name up to that point */ + strncpy (file,test,i = s - test); + file[i] = '\0'; /* tie off */ + } + else strcpy (file,test); /* use just that name then */ + if (s = strrchr (file,'/')){/* find directory name */ + *++s = '\0'; /* found, tie off at that point */ + s = file; + } + /* silly case */ + else if ((file[0] == '~') || (file[0] == '#')) s = file; + /* do the work */ + dummy_list_work (stream,s,test,contents,0); + /* always an INBOX */ + if (pmatch ("INBOX",ucase (test))) { + /* done if have a dirfmt INBOX */ + for (drivers = (DRIVER *) mail_parameters (NIL,GET_DRIVERS,NIL); + drivers && !(!(drivers->flags & DR_DISABLE) && + (drivers->flags & DR_DIRFMT) && + (*drivers->valid) ("INBOX")); drivers = drivers->next); + /* list INBOX appropriately */ + dummy_listed (stream,drivers ? '/' : NIL,"INBOX", + drivers ? NIL : LATT_NOINFERIORS,contents); + } + } +} + + +/* Dummy list mailboxes + * Accepts: mail stream + * reference + * pattern to search + */ + +void dummy_list (MAILSTREAM *stream,char *ref,char *pat) +{ + dummy_scan (stream,ref,pat,NIL); +} + +/* Dummy list subscribed mailboxes + * Accepts: mail stream + * reference + * pattern to search + */ + +void dummy_lsub (MAILSTREAM *stream,char *ref,char *pat) +{ + void *sdb = NIL; + char *s,*t,test[MAILTMPLEN],tmp[MAILTMPLEN]; + int showuppers = pat[strlen (pat) - 1] == '%'; + /* get canonical form of name */ + if (dummy_canonicalize (test,ref,pat) && (s = sm_read (&sdb))) do + if (*s != '{') { + if (!compare_cstring (s,"INBOX") && + pmatch ("INBOX",ucase (strcpy (tmp,test)))) + mm_lsub (stream,NIL,s,LATT_NOINFERIORS); + else if (pmatch_full (s,test,'/')) mm_lsub (stream,'/',s,NIL); + else while (showuppers && (t = strrchr (s,'/'))) { + *t = '\0'; /* tie off the name */ + if (pmatch_full (s,test,'/')) mm_lsub (stream,'/',s,LATT_NOSELECT); + } + } + while (s = sm_read (&sdb)); /* until no more subscriptions */ +} + + +/* Dummy subscribe to mailbox + * Accepts: mail stream + * mailbox to add to subscription list + * Returns: T on success, NIL on failure + */ + +long dummy_subscribe (MAILSTREAM *stream,char *mailbox) +{ + char *s,tmp[MAILTMPLEN]; + struct stat sbuf; + /* must be valid local mailbox */ + if ((s = mailboxfile (tmp,mailbox)) && *s && !stat (s,&sbuf)) + switch (sbuf.st_mode & S_IFMT) { + case S_IFDIR: /* allow but snarl */ + sprintf (tmp,"CLIENT BUG DETECTED: subscribe of non-mailbox directory %.80s", + mailbox); + MM_NOTIFY (stream,tmp,WARN); + case S_IFREG: + return sm_subscribe (mailbox); + } + sprintf (tmp,"Can't subscribe %.80s: not a mailbox",mailbox); + MM_LOG (tmp,ERROR); + return NIL; +} + +/* Dummy list mailboxes worker routine + * Accepts: mail stream + * directory name to search + * search pattern + * string to scan + * search level + */ + +void dummy_list_work (MAILSTREAM *stream,char *dir,char *pat,char *contents, + long level) +{ + DRIVER *drivers; + dirfmttest_t dt; + DIR *dp; + struct direct *d; + struct stat sbuf; + char tmp[MAILTMPLEN],path[MAILTMPLEN]; + size_t len = 0; + /* punt if bogus name */ + if (!mailboxdir (tmp,dir,NIL)) return; + if (dp = opendir (tmp)) { /* do nothing if can't open directory */ + /* see if a non-namespace directory format */ + for (drivers = (DRIVER *) mail_parameters (NIL,GET_DRIVERS,NIL), dt = NIL; + dir && !dt && drivers; drivers = drivers->next) + if (!(drivers->flags & DR_DISABLE) && (drivers->flags & DR_DIRFMT) && + (*drivers->valid) (dir)) + dt = mail_parameters ((*drivers->open) (NIL),GET_DIRFMTTEST,NIL); + /* list it if at top-level */ + if (!level && dir && pmatch_full (dir,pat,'/') && !pmatch (dir,"INBOX")) + dummy_listed (stream,'/',dir,dt ? NIL : LATT_NOSELECT,contents); + + /* scan directory, ignore . and .. */ + if (!dir || dir[(len = strlen (dir)) - 1] == '/') while (d = readdir (dp)) + if ((!(dt && (*dt) (d->d_name))) && + ((d->d_name[0] != '.') || + (((long) mail_parameters (NIL,GET_HIDEDOTFILES,NIL)) ? NIL : + (d->d_name[1] && (((d->d_name[1] != '.') || d->d_name[2]))))) && + ((len + strlen (d->d_name)) <= NETMAXMBX)) { + /* see if name is useful */ + if (dir) sprintf (tmp,"%s%s",dir,d->d_name); + else strcpy (tmp,d->d_name); + /* make sure useful and can get info */ + if ((pmatch_full (strcpy (path,tmp),pat,'/') || + pmatch_full (strcat (path,"/"),pat,'/') || + dmatch (path,pat,'/')) && + mailboxdir (path,dir,"x") && (len = strlen (path)) && + strcpy (path+len-1,d->d_name) && !stat (path,&sbuf)) { + /* only interested in file type */ + switch (sbuf.st_mode & S_IFMT) { + case S_IFDIR: /* directory? */ + /* form with trailing / */ + sprintf (path,"%s/",tmp); + /* skip listing if INBOX */ + if (!pmatch (tmp,"INBOX")) { + if (pmatch_full (tmp,pat,'/')) { + if (!dummy_listed (stream,'/',tmp,LATT_NOSELECT,contents)) + break; + } + /* try again with trailing / */ + else if (pmatch_full (path,pat,'/') && + !dummy_listed (stream,'/',path,LATT_NOSELECT,contents)) + break; + } + if (dmatch (path,pat,'/') && + (level < (long) mail_parameters (NIL,GET_LISTMAXLEVEL,NIL))) + dummy_list_work (stream,path,pat,contents,level+1); + break; + case S_IFREG: /* ordinary name */ + /* Must use ctime for systems that don't update mtime properly */ + if (pmatch_full (tmp,pat,'/') && compare_cstring (tmp,"INBOX")) + dummy_listed (stream,'/',tmp,LATT_NOINFERIORS + + ((sbuf.st_size && (sbuf.st_atime < sbuf.st_ctime))? + LATT_MARKED : LATT_UNMARKED),contents); + break; + } + } + } + closedir (dp); /* all done, flush directory */ + } +} + +/* Scan file for contents + * Accepts: driver to use + * file name + * desired contents + * length of contents + * size of file + * Returns: NIL if contents not found, T if found + */ + +long scan_contents (DRIVER *dtb,char *name,char *contents, + unsigned long csiz,unsigned long fsiz) +{ + scancontents_t sc = dtb ? + (scancontents_t) (*dtb->parameters) (GET_SCANCONTENTS,NIL) : NIL; + return (*(sc ? sc : dummy_scan_contents)) (name,contents,csiz,fsiz); +} + + +/* Scan file for contents + * Accepts: file name + * desired contents + * length of contents + * size of file + * Returns: NIL if contents not found, T if found + */ + +#define BUFSIZE 4*MAILTMPLEN + +long dummy_scan_contents (char *name,char *contents,unsigned long csiz, + unsigned long fsiz) +{ + int fd; + unsigned long ssiz,bsiz; + char *buf; + /* forget it if can't select or open */ + if ((fd = open (name,O_RDONLY,NIL)) >= 0) { + /* get buffer including slop */ + buf = (char *) fs_get (BUFSIZE + (ssiz = 4 * ((csiz / 4) + 1)) + 1); + memset (buf,'\0',ssiz); /* no slop area the first time */ + while (fsiz) { /* until end of file */ + read (fd,buf+ssiz,bsiz = min (fsiz,BUFSIZE)); + if (search ((unsigned char *) buf,bsiz+ssiz, + (unsigned char *) contents,csiz)) break; + memcpy (buf,buf+BUFSIZE,ssiz); + fsiz -= bsiz; /* note that we read that much */ + } + fs_give ((void **) &buf); /* flush buffer */ + close (fd); /* finished with file */ + if (fsiz) return T; /* found */ + } + return NIL; /* not found */ +} + +/* Mailbox found + * Accepts: MAIL stream + * hierarchy delimiter + * mailbox name + * attributes + * contents to search before calling mm_list() + * Returns: NIL if should abort hierarchy search, else T (currently always) + */ + +long dummy_listed (MAILSTREAM *stream,char delimiter,char *name, + long attributes,char *contents) +{ + DRIVER *d; + DIR *dp; + struct direct *dr; + dirfmttest_t dt; + unsigned long csiz; + struct stat sbuf; + int nochild; + char *s,tmp[MAILTMPLEN]; + if (!(attributes & LATT_NOINFERIORS) && mailboxdir (tmp,name,NIL) && + (dp = opendir (tmp))) { /* if not \NoInferiors */ + /* locate dirfmttest if any */ + for (d = (DRIVER *) mail_parameters (NIL,GET_DRIVERS,NIL), dt = NIL; + !dt && d; d = d->next) + if (!(d->flags & DR_DISABLE) && (d->flags & DR_DIRFMT) && + (*d->valid) (name)) + dt = mail_parameters ((*d->open) (NIL),GET_DIRFMTTEST,NIL); + /* scan directory for children */ + for (nochild = T; nochild && (dr = readdir (dp)); ) + if ((!(dt && (*dt) (dr->d_name))) && + ((dr->d_name[0] != '.') || + (((long) mail_parameters (NIL,GET_HIDEDOTFILES,NIL)) ? NIL : + (dr->d_name[1] && ((dr->d_name[1] != '.') || dr->d_name[2]))))) + nochild = NIL; + attributes |= nochild ? LATT_HASNOCHILDREN : LATT_HASCHILDREN; + closedir (dp); /* all done, flush directory */ + } + d = NIL; /* don't \NoSelect dir if it has a driver */ + if ((attributes & LATT_NOSELECT) && (d = mail_valid (NIL,name,NIL)) && + (d != &dummydriver)) attributes &= ~LATT_NOSELECT; + if (!contents || /* notify main program */ + (!(attributes & LATT_NOSELECT) && (csiz = strlen (contents)) && + (s = mailboxfile (tmp,name)) && + (*s || (s = mail_parameters (NIL,GET_INBOXPATH,tmp))) && + !stat (s,&sbuf) && (d || (csiz <= sbuf.st_size)) && + SAFE_SCAN_CONTENTS (d,tmp,contents,csiz,sbuf.st_size))) + mm_list (stream,delimiter,name,attributes); + return T; +} + +/* Dummy create mailbox + * Accepts: mail stream + * mailbox name to create + * Returns: T on success, NIL on failure + */ + +long dummy_create (MAILSTREAM *stream,char *mailbox) +{ + char *s,tmp[MAILTMPLEN]; + long ret = NIL; + /* validate name */ + if (!(compare_cstring (mailbox,"INBOX") && (s = dummy_file (tmp,mailbox)))) { + sprintf (tmp,"Can't create %.80s: invalid name",mailbox); + MM_LOG (tmp,ERROR); + } + /* create the name, done if made directory */ + else if ((ret = dummy_create_path (stream,tmp,get_dir_protection(mailbox)))&& + (s = strrchr (s,'/')) && !s[1]) return T; + return ret ? set_mbx_protections (mailbox,tmp) : NIL; +} + +/* Dummy create path + * Accepts: mail stream + * path name to create + * directory mode + * Returns: T on success, NIL on failure + */ + +long dummy_create_path (MAILSTREAM *stream,char *path,long dirmode) +{ + struct stat sbuf; + char c,*s,tmp[MAILTMPLEN]; + int fd; + long ret = NIL; + char *t = strrchr (path,'/'); + int wantdir = t && !t[1]; + int mask = umask (0); + if (wantdir) *t = '\0'; /* flush trailing delimiter for directory */ + if (s = strrchr (path,'/')) { /* found superior to this name? */ + c = *++s; /* remember first character of inferior */ + *s = '\0'; /* tie off to get just superior */ + /* name doesn't exist, create it */ + if ((stat (path,&sbuf) || ((sbuf.st_mode & S_IFMT) != S_IFDIR)) && + !dummy_create_path (stream,path,dirmode)) { + umask (mask); /* restore mask */ + return NIL; + } + *s = c; /* restore full name */ + } + if (wantdir) { /* want to create directory? */ + ret = !mkdir (path,(int) dirmode); + *t = '/'; /* restore directory delimiter */ + } + /* create file */ + else if ((fd = open (path,O_WRONLY|O_CREAT|O_EXCL, + (long) mail_parameters(NIL,GET_MBXPROTECTION,NIL))) >=0) + ret = !close (fd); + if (!ret) { /* error? */ + sprintf (tmp,"Can't create mailbox node %.80s: %.80s",path,strerror (errno)); + MM_LOG (tmp,ERROR); + } + umask (mask); /* restore mask */ + return ret; /* return status */ +} + +/* Dummy delete mailbox + * Accepts: mail stream + * mailbox name to delete + * Returns: T on success, NIL on failure + */ + +long dummy_delete (MAILSTREAM *stream,char *mailbox) +{ + struct stat sbuf; + char *s,tmp[MAILTMPLEN]; + if (!(s = dummy_file (tmp,mailbox))) { + sprintf (tmp,"Can't delete - invalid name: %.80s",s); + MM_LOG (tmp,ERROR); + } + /* no trailing / (workaround BSD kernel bug) */ + if ((s = strrchr (tmp,'/')) && !s[1]) *s = '\0'; + if (stat (tmp,&sbuf) || ((sbuf.st_mode & S_IFMT) == S_IFDIR) ? + rmdir (tmp) : unlink (tmp)) { + sprintf (tmp,"Can't delete mailbox %.80s: %.80s",mailbox,strerror (errno)); + MM_LOG (tmp,ERROR); + return NIL; + } + return T; /* return success */ +} + +/* Mail rename mailbox + * Accepts: mail stream + * old mailbox name + * new mailbox name + * Returns: T on success, NIL on failure + */ + +long dummy_rename (MAILSTREAM *stream,char *old,char *newname) +{ + struct stat sbuf; + char c,*s,tmp[MAILTMPLEN],mbx[MAILTMPLEN],oldname[MAILTMPLEN]; + /* no trailing / allowed */ + if (!dummy_file (oldname,old) || !(s = dummy_file (mbx,newname)) || + stat (oldname,&sbuf) || ((s = strrchr (s,'/')) && !s[1] && + ((sbuf.st_mode & S_IFMT) != S_IFDIR))) { + sprintf (mbx,"Can't rename %.80s to %.80s: invalid name",old,newname); + MM_LOG (mbx,ERROR); + return NIL; + } + if (s) { /* found a directory delimiter? */ + if (!s[1]) *s = '\0'; /* ignore trailing delimiter */ + else { /* found superior to destination name? */ + c = *++s; /* remember first character of inferior */ + *s = '\0'; /* tie off to get just superior */ + /* name doesn't exist, create it */ + if ((stat (mbx,&sbuf) || ((sbuf.st_mode & S_IFMT) != S_IFDIR)) && + !dummy_create (stream,mbx)) return NIL; + *s = c; /* restore full name */ + } + } + /* rename of non-ex INBOX creates dest */ + if (!compare_cstring (old,"INBOX") && stat (oldname,&sbuf)) + return dummy_create (NIL,mbx); + if (rename (oldname,mbx)) { + sprintf (tmp,"Can't rename mailbox %.80s to %.80s: %.80s",old,newname, + strerror (errno)); + MM_LOG (tmp,ERROR); + return NIL; + } + return T; /* return success */ +} + +/* Dummy open + * Accepts: stream to open + * Returns: stream on success, NIL on failure + */ + +MAILSTREAM *dummy_open (MAILSTREAM *stream) +{ + int fd; + char err[MAILTMPLEN],tmp[MAILTMPLEN]; + struct stat sbuf; + /* OP_PROTOTYPE call */ + if (!stream) return &dummyproto; + err[0] = '\0'; /* no error message yet */ + /* can we open the file? */ + if (!dummy_file (tmp,stream->mailbox)) + sprintf (err,"Can't open this name: %.80s",stream->mailbox); + else if ((fd = open (tmp,O_RDONLY,NIL)) < 0) { + /* no, error unless INBOX */ + if (compare_cstring (stream->mailbox,"INBOX")) + sprintf (err,"%.80s: %.80s",strerror (errno),stream->mailbox); + } + else { /* file had better be empty then */ + fstat (fd,&sbuf); /* sniff at its size */ + close (fd); + if ((sbuf.st_mode & S_IFMT) != S_IFREG) + sprintf (err,"Can't open %.80s: not a selectable mailbox", + stream->mailbox); + else if (sbuf.st_size) /* bogus format if non-empty */ + sprintf (err,"Can't open %.80s (file %.80s): not in valid mailbox format", + stream->mailbox,tmp); + } + if (err[0]) { /* if an error happened */ + MM_LOG (err,stream->silent ? WARN : ERROR); + return NIL; + } + else if (!stream->silent) { /* only if silence not requested */ + mail_exists (stream,0); /* say there are 0 messages */ + mail_recent (stream,0); /* and certainly no recent ones! */ + stream->uid_validity = time (0); + } + stream->inbox = T; /* note that it's an INBOX */ + return stream; /* return success */ +} + + +/* Dummy close + * Accepts: MAIL stream + * options + */ + +void dummy_close (MAILSTREAM *stream,long options) +{ + /* return silently */ +} + +/* Dummy ping mailbox + * Accepts: MAIL stream + * Returns: T if stream alive, else NIL + */ + +long dummy_ping (MAILSTREAM *stream) +{ + MAILSTREAM *test; + if (time (0) >= /* time to do another test? */ + ((time_t) (stream->gensym + + (long) mail_parameters (NIL,GET_SNARFINTERVAL,NIL)))) { + /* has mailbox format changed? */ + if ((test = mail_open (NIL,stream->mailbox,OP_PROTOTYPE)) && + (test->dtb != stream->dtb) && + (test = mail_open (NIL,stream->mailbox,NIL))) { + /* preserve some resources */ + test->original_mailbox = stream->original_mailbox; + stream->original_mailbox = NIL; + test->sparep = stream->sparep; + stream->sparep = NIL; + test->sequence = stream->sequence; + mail_close ((MAILSTREAM *) /* flush resources used by dummy stream */ + memcpy (fs_get (sizeof (MAILSTREAM)),stream, + sizeof (MAILSTREAM))); + /* swap the streams */ + memcpy (stream,test,sizeof (MAILSTREAM)); + fs_give ((void **) &test);/* flush test now that copied */ + /* make sure application knows */ + mail_exists (stream,stream->recent = stream->nmsgs); + } + /* still hasn't changed */ + else stream->gensym = time (0); + } + return T; +} + + +/* Dummy check mailbox + * Accepts: MAIL stream + * No-op for readonly files, since read/writer can expunge it from under us! + */ + +void dummy_check (MAILSTREAM *stream) +{ + dummy_ping (stream); /* invoke ping */ +} + + +/* Dummy expunge mailbox + * Accepts: MAIL stream + * sequence to expunge if non-NIL + * expunge options + * Returns: T, always + */ + +long dummy_expunge (MAILSTREAM *stream,char *sequence,long options) +{ + return LONGT; +} + +/* Dummy copy message(s) + * Accepts: MAIL stream + * sequence + * destination mailbox + * options + * Returns: T if copy successful, else NIL + */ + +long dummy_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options) +{ + if ((options & CP_UID) ? mail_uid_sequence (stream,sequence) : + mail_sequence (stream,sequence)) fatal ("Impossible dummy_copy"); + return NIL; +} + + +/* Dummy append message string + * Accepts: mail stream + * destination mailbox + * append callback function + * data for callback + * Returns: T on success, NIL on failure + */ + +long dummy_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data) +{ + struct stat sbuf; + int fd = -1; + int e; + char tmp[MAILTMPLEN]; + MAILSTREAM *ts = default_proto (T); + /* append to INBOX? */ + if (!compare_cstring (mailbox,"INBOX")) { + /* yes, if no empty proto try creating */ + if (!ts && !(*(ts = default_proto (NIL))->dtb->create) (ts,"INBOX")) + ts = NIL; + } + else if (dummy_file (tmp,mailbox) && ((fd = open (tmp,O_RDONLY,NIL)) < 0)) { + if ((e = errno) == ENOENT) /* failed, was it no such file? */ + MM_NOTIFY (stream,"[TRYCREATE] Must create mailbox before append",NIL); + sprintf (tmp,"%.80s: %.80s",strerror (e),mailbox); + MM_LOG (tmp,ERROR); /* pass up error */ + return NIL; /* always fails */ + } + else if (fd >= 0) { /* found file? */ + fstat (fd,&sbuf); /* get its size */ + close (fd); /* toss out the fd */ + if (sbuf.st_size) ts = NIL; /* non-empty file? */ + } + if (ts) return (*ts->dtb->append) (stream,mailbox,af,data); + sprintf (tmp,"Indeterminate mailbox format: %.80s",mailbox); + MM_LOG (tmp,ERROR); + return NIL; +} + +/* Dummy mail generate file string + * Accepts: temporary buffer to write into + * mailbox name string + * Returns: local file string or NIL if failure + */ + +char *dummy_file (char *dst,char *name) +{ + char *s = mailboxfile (dst,name); + /* return our standard inbox */ + return (s && !*s) ? strcpy (dst,sysinbox ()) : s; +} + + +/* Dummy canonicalize name + * Accepts: buffer to write name + * reference + * pattern + * Returns: T if success, NIL if failure + */ + +long dummy_canonicalize (char *tmp,char *ref,char *pat) +{ + unsigned long i; + char *s; + if (ref) { /* preliminary reference check */ + if (*ref == '{') return NIL;/* remote reference not allowed */ + else if (!*ref) ref = NIL; /* treat empty reference as no reference */ + } + switch (*pat) { + case '#': /* namespace name */ + if (mailboxfile (tmp,pat)) strcpy (tmp,pat); + else return NIL; /* unknown namespace */ + break; + case '{': /* remote names not allowed */ + return NIL; + case '/': /* rooted name */ + case '~': /* home directory name */ + if (!ref || (*ref != '#')) {/* non-namespace reference? */ + strcpy (tmp,pat); /* yes, ignore */ + break; + } + /* fall through */ + default: /* apply reference for all other names */ + if (!ref) strcpy (tmp,pat); /* just copy if no namespace */ + else if ((*ref != '#') || mailboxfile (tmp,ref)) { + /* wants root of name? */ + if (*pat == '/') strcpy (strchr (strcpy (tmp,ref),'/'),pat); + /* otherwise just append */ + else sprintf (tmp,"%s%s",ref,pat); + } + else return NIL; /* unknown namespace */ + } + /* count wildcards */ + for (i = 0, s = tmp; *s; *s++) if ((*s == '*') || (*s == '%')) ++i; + if (i > MAXWILDCARDS) { /* ridiculous wildcarding? */ + MM_LOG ("Excessive wildcards in LIST/LSUB",ERROR); + return NIL; + } + return T; +} |