diff options
Diffstat (limited to 'imap/src/osdep/dos/dummydos.c')
| -rw-r--r-- | imap/src/osdep/dos/dummydos.c | 689 |
1 files changed, 689 insertions, 0 deletions
diff --git a/imap/src/osdep/dos/dummydos.c b/imap/src/osdep/dos/dummydos.c new file mode 100644 index 00000000..4bf147b8 --- /dev/null +++ b/imap/src/osdep/dos/dummydos.c @@ -0,0 +1,689 @@ +/* ======================================================================== + * Copyright 1988-2006 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 for DOS + * + * 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: 24 May 1993 + * Last Edited: 30 August 2006 + */ + + +#include <ctype.h> +#include <errno.h> +#include <fcntl.h> +#include "mail.h" +#include "osdep.h" +#include <sys\stat.h> +#include <dos.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); +long dummy_badname (char *tmp,char *s); + +/* 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}; + + /* driver parameters */ +static char *file_extension = NIL; + +/* 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 */ + return (name && *name && (*name != '{') && + (s = mailboxfile (tmp,name)) && (!*s || !stat (s,&sbuf))) ? + &dummydriver : 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 SET_EXTENSION: + if (file_extension) fs_give ((void **) &file_extension); + if (*(char *) value) file_extension = cpystr ((char *) value); + case GET_EXTENSION: + ret = (void *) file_extension; + } + return ret; +} + +/* Dummy scan mailboxes + * Accepts: mail stream + * reference + * pattern to search + * string to scan + */ + +#define LISTTMPLEN 128 + +void dummy_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents) +{ + char *s,test[LISTTMPLEN],file[LISTTMPLEN]; + long i = 0; + 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_NOINFERIORS,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,(size_t) (i = s - test)); + file[i] = '\0'; /* tie off */ + } + else strcpy (file,test); /* use just that name then */ + /* find directory name */ + if (s = strrchr (file,'\\')) { + *++s = '\0'; /* found, tie off at that point */ + s = file; + } + /* silly case */ + else if (file[0] == '#') s = file; + /* do the work */ + dummy_list_work (stream,s,test,contents,0); + if (pmatch ("INBOX",test)) /* always an INBOX */ + dummy_listed (stream,NIL,"INBOX",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 + * pattern to search + */ + +void dummy_lsub (MAILSTREAM *stream,char *ref,char *pat) +{ + void *sdb = NIL; + char *s,*t,test[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 (pmatch_full (s,test,'\\')) { + if (pmatch (s,"INBOX")) mm_lsub (stream,NIL,s,LATT_NOINFERIORS); + else 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) && + ((sbuf.st_mode & S_IFMT) == S_IFREG)) return sm_subscribe (mailbox); + sprintf (tmp,"Can't subscribe %s: 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) +{ + struct find_t f; + struct stat sbuf; + char *s,tmp[LISTTMPLEN],tmpx[LISTTMPLEN]; + char *base = (dir && (dir[0] == '\\')) ? NIL : myhomedir (); + /* build name */ + if (base) sprintf (tmpx,"%s\\",base); + else tmpx[0] = '\0'; + if (dir) strcat (tmpx,dir); + /* punt if bogus name */ + if (!mailboxfile (tmp,tmpx)) return; + /* make directory wildcard */ + strcat (tmp,(tmp[strlen (tmp) -1] == '\\') ? "*." : "\\*."); + strcat (tmp,file_extension ? file_extension : "*"); + /* do nothing if can't open directory */ + if (!_dos_findfirst (tmp,_A_NORMAL|_A_SUBDIR,&f)) { + /* list it if at top-level */ + if (!level && dir && pmatch_full (dir,pat,'\\')) + dummy_listed (stream,'\\',dir,LATT_NOSELECT,contents); + /* scan directory */ + if (tmpx[strlen (tmpx) - 1] == '\\') do if (*f.name != '.') { + if (base) sprintf (tmpx,"%s\\",base); + else tmpx[0] = '\0'; + if (dir) sprintf (tmpx + strlen (tmpx),"%s%s",dir,f.name); + else strcat (tmpx,f.name); + if (mailboxfile (tmp,tmpx) && !stat (tmp,&sbuf)) { + /* suppress extension */ + if (file_extension && (s = strchr (f.name,'.'))) *s = '\0'; + /* now make name we'd return */ + if (dir) sprintf (tmp,"%s%s",dir,f.name); + else strcpy (tmp,f.name); + /* only interested in file type */ + switch (sbuf.st_mode & S_IFMT) { + case S_IFDIR: /* directory? */ + if (pmatch_full (tmp,pat,'\\')) { + dummy_listed (stream,'\\',tmp,LATT_NOSELECT,contents); + strcat (tmp,"\\"); /* set up for dmatch call */ + } + /* try again with trailing / */ + else if (pmatch_full (strcat (tmp,"\\"),pat,'\\')) + dummy_listed (stream,'\\',tmp,LATT_NOSELECT,contents); + if (dmatch (tmp,pat,'\\') && + (level < (long) mail_parameters (NIL,GET_LISTMAXLEVEL,NIL))) + dummy_list_work (stream,tmp,pat,contents,level+1); + break; + case S_IFREG: /* ordinary name */ + if (pmatch_full (tmp,pat,'\\') && !pmatch ("INBOX",tmp)) + dummy_listed (stream,'\\',tmp,LATT_NOINFERIORS,contents); + break; + } + } + } + while (!_dos_findnext (&f)); + } +} + +/* Mailbox found + * Accepts: hierarchy delimiter + * mailbox name + * attributes + * contents to search before calling mm_list() + * Returns: T, always + */ + +#define BUFSIZE MAILTMPLEN + +long dummy_listed (MAILSTREAM *stream,char delimiter,char *name, + long attributes,char *contents) +{ + struct stat sbuf; + int fd; + size_t csiz,ssiz,bsiz; + char *buf,tmp[MAILTMPLEN]; + if (contents) { /* want to search contents? */ + /* forget it if can't select or open */ + if ((attributes & LATT_NOSELECT) || !(csiz = strlen (contents)) || + !mailboxfile (tmp,name) || stat (tmp,&sbuf) || (csiz > sbuf.st_size) || + ((fd = open (tmp,O_RDONLY,NIL)) < 0)) return T; + /* 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 (sbuf.st_size) { /* until end of file */ + read (fd,buf+ssiz,bsiz = min (sbuf.st_size,BUFSIZE)); + if (search ((unsigned char *) buf,bsiz+ssiz, + (unsigned char *) contents,csiz)) break; + memcpy (buf,buf+BUFSIZE,ssiz); + sbuf.st_size -= bsiz; /* note that we read that much */ + } + fs_give ((void **) &buf); /* flush buffer */ + close (fd); /* finished with file */ + if (!sbuf.st_size) return T;/* not found */ + } + /* notify main program */ + 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 tmp[MAILTMPLEN]; + return (compare_cstring (mailbox,"INBOX") && mailboxfile (tmp,mailbox)) ? + dummy_create_path (stream,tmp,NIL) : dummy_badname (tmp,mailbox); +} + + +/* 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,'\\'); + char *pt = (path[1] == ':') ? path + 2 : path; + int wantdir = t && !t[1]; + if (wantdir) *t = '\0'; /* flush trailing delimiter for directory */ + /* found superior to this name? */ + if ((s = strrchr (pt,'\\')) && (s != pt)) { + strncpy (tmp,path,(size_t) (s - path)); + tmp[s - path] = '\0'; /* make directory name for stat */ + c = *++s; /* tie off in case need to recurse */ + *s = '\0'; + /* name doesn't exist, create it */ + if ((stat (tmp,&sbuf) || ((sbuf.st_mode & S_IFMT) != S_IFDIR)) && + !dummy_create_path (stream,path,dirmode)) return NIL; + *s = c; /* restore full name */ + } + if (wantdir) { /* want to create directory? */ + ret = !mkdir (path); + *t = '\\'; /* restore directory delimiter */ + } + /* create file */ + else if ((fd = open (path,O_WRONLY|O_CREAT|O_EXCL,S_IREAD|S_IWRITE)) >= 0) + ret = !close (fd); /* close file */ + if (!ret) { /* error? */ + sprintf (tmp,"Can't create mailbox node %s: %s",path,strerror (errno)); + mm_log (tmp,ERROR); + } + 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 (!mailboxfile (tmp,mailbox)) return dummy_badname (tmp,mailbox); + /* no trailing \ */ + 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 %s: %s",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],file[MAILTMPLEN]; + /* make file name */ + if (!mailboxfile (file,old)) return dummy_badname (tmp,old); + /* no trailing \ allowed */ + if (!(s = mailboxfile (tmp,newname)) || ((s = strrchr (s,'\\')) && !s[1])) + return dummy_badname (tmp,newname); + if (s) { /* 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 (file,&sbuf) || ((sbuf.st_mode & S_IFMT) != S_IFDIR)) && + !dummy_create (stream,file)) return NIL; + *s = c; /* restore full name */ + } + if (rename (file,tmp)) { + sprintf (tmp,"Can't rename mailbox %s to %s: %s",old,newname, + strerror (errno)); + mm_log (tmp,ERROR); + return NIL; + } + return LONGT; /* return success */ +} + +/* Dummy open + * Accepts: stream to open + * Returns: stream on success, NIL on failure + */ + +MAILSTREAM *dummy_open (MAILSTREAM *stream) +{ + char tmp[MAILTMPLEN]; + struct stat sbuf; + int fd = -1; + /* OP_PROTOTYPE call or silence */ + if (!stream || stream->silent) return NIL; + if (!mailboxfile (tmp,stream->mailbox)) + sprintf (tmp,"Can't open this name: %.80s",stream->mailbox); + else if (compare_cstring (stream->mailbox,"INBOX") && + ((fd = open (tmp,O_RDONLY,NIL)) < 0)) + sprintf (tmp,"%s: %s",strerror (errno),stream->mailbox); + else { + if (fd >= 0) { /* if got a file */ + fstat (fd,&sbuf); /* sniff at its size */ + close (fd); + if (sbuf.st_size) sprintf (tmp,"Not a mailbox: %s",stream->mailbox); + else fd = -1; /* a-OK */ + } + if (fd < 0) { /* no file, right? */ + if (!stream->silent) { /* only if silence not requested */ + /* say there are 0 messages */ + mail_exists (stream,(long) 0); + mail_recent (stream,(long) 0); + stream->uid_validity = time (0); + } + stream->inbox = T; /* note that it's an INBOX */ + return stream; /* return success */ + } + } + mm_log (tmp,stream->silent ? WARN: ERROR); + return NIL; /* always fails */ +} + + +/* 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 + * No-op for readonly files, since read/writer can expunge it from under us! + */ + +long dummy_ping (MAILSTREAM *stream) +{ + MAILSTREAM *test; + /* time to do another test? */ + if (time (0) >= ((time_t) (stream->gensym + 30))) { + /* 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); + if (compare_cstring (mailbox,"INBOX") && mailboxfile (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", + (long) NIL); + sprintf (tmp,"%s: %s",strerror (e),mailbox); + mm_log (tmp,ERROR); /* pass up error */ + return NIL; /* always fails */ + } + 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: %s",mailbox); + mm_log (tmp,ERROR); + return NIL; +} + +/* Return bad file name error message + * Accepts: temporary buffer + * file name + * Returns: long NIL always + */ + +long dummy_badname (char *tmp,char *s) +{ + sprintf (tmp,"Invalid mailbox name: %s",s); + mm_log (tmp,ERROR); + return (long) NIL; +} + + +/* 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,dev[4]; + /* initially no device */ + dev[0] = dev[1] = dev[2] = dev[3] = '\0'; + if (ref) switch (*ref) { /* preliminary reference check */ + case '{': /* remote names not allowed */ + return NIL; /* disallowed */ + case '\0': /* empty reference string */ + break; + default: /* all other names */ + if (ref[1] == ':') { /* start with device name? */ + dev[0] = *ref++; dev[1] = *ref++; + } + break; + } + if (pat[1] == ':') { /* device name in pattern? */ + dev[0] = *pat++; dev[1] = *pat++; + ref = NIL; /* ignore reference */ + } + switch (*pat) { + case '#': /* namespace names */ + if (mailboxfile (tmp,pat)) strcpy (tmp,pat); + else return NIL; /* unknown namespace */ + break; + case '{': /* remote names not allowed */ + return NIL; + case '\\': /* rooted name */ + ref = NIL; /* ignore reference */ + break; + } + /* make sure device names are rooted */ + if (dev[0] && (*(ref ? ref : pat) != '\\')) dev[2] = '\\'; + /* build name */ + sprintf (tmp,"%s%s%s",dev,ref ? ref : "",pat); + ucase (tmp); /* force upper case */ + /* 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; +} |