ref: 39f18c9d88f52a22373790dec5721fa3521d3f00
dir: /sys/src/cmd/ip/imap4d/imap4d.h/
/*
* mailbox and message representations
*
* these structures are allocated with emalloc and must be explicitly freed
*/
typedef struct Box Box;
typedef struct Header Header;
typedef struct MAddr MAddr;
typedef struct MbLock MbLock;
typedef struct MimeHdr MimeHdr;
typedef struct Msg Msg;
typedef struct NamedInt NamedInt;
typedef struct Pair Pair;
enum
{
StrAlloc = 32, /* characters allocated at a time */
BufSize = 8*1024, /* size of transfer block */
NDigest = 40, /* length of digest string */
NUid = 10, /* length of .imp uid string */
NFlags = 8, /* length of .imp flag string */
LockSecs = 5 * 60, /* seconds to wait for acquiring a locked file */
MboxNameLen = 256, /* max. length of upas/fs mbox name */
MsgNameLen = 32, /* max. length of a file in a upas/fs mbox */
UserNameLen = 64, /* max. length of user's name */
MUtf7Max = 6, /* max length for a modified utf7 character: &bbbb- */
/*
* message flags
*/
MSeen = 1 << 0,
MAnswered = 1 << 1,
MFlagged = 1 << 2,
MDeleted = 1 << 3,
MDraft = 1 << 4,
MRecent = 1 << 5,
/*
* message bogus flags
*/
NotBogus = 0, /* the message is displayable */
BogusHeader = 1, /* the header had bad characters */
BogusBody = 2, /* the body had bad characters */
BogusTried = 4, /* attempted to open the fake message */
};
struct Box
{
char *name; /* path name of mailbox */
char *fs; /* fs name of mailbox */
char *fsDir; /* /mail/fs/box->fs */
char *imp; /* path name of .imp file */
uchar writable; /* can write back messages? */
uchar dirtyImp; /* .imp file needs to be written? */
uchar sendFlags; /* need flags update */
Qid qid; /* qid of fs mailbox */
Qid impQid; /* qid of .imp when last synched */
long mtime; /* file mtime when last read */
ulong max; /* maximum msgs->seq, same as number of messages */
ulong toldMax; /* last value sent to client */
ulong recent; /* number of recently received messaged */
ulong toldRecent; /* last value sent to client */
ulong uidnext; /* next uid value assigned to a message */
ulong uidvalidity; /* uid of mailbox */
Msg *msgs;
};
/*
* fields of Msg->info
*/
enum
{
/*
* read from upasfs
*/
IFrom,
ITo,
ICc,
IReplyTo,
IUnixDate,
ISubject,
IType,
IDisposition,
IFilename,
IDigest,
IBcc,
IInReplyTo, /* aka internal date */
IDate,
ISender,
IMessageId,
ILines, /* number of lines of raw body */
IMax
};
struct Header
{
char *buf; /* header, including terminating \r\n */
ulong size; /* strlen(buf) */
ulong lines; /* number of \n characters in buf */
/*
* pre-parsed mime headers
*/
MimeHdr *type; /* content-type */
MimeHdr *id; /* content-id */
MimeHdr *description; /* content-description */
MimeHdr *encoding; /* content-transfer-encoding */
MimeHdr *md5; /* content-md5 */
MimeHdr *disposition; /* content-disposition */
MimeHdr *language; /* content-language */
};
struct Msg
{
Msg *next;
Msg *prev;
Msg *kids;
Msg *parent;
char *fsDir; /* box->fsDir of enclosing message */
Header head; /* message header */
Header mime; /* mime header from enclosing multipart spec */
int flags;
uchar sendFlags; /* flags value needs to be sent to client */
uchar expunged; /* message actually expunged, but not yet reported to client */
uchar matched; /* search succeeded? */
uchar bogus; /* implies the message is invalid, ie contains nulls; see flags above */
ulong uid; /* imap unique identifier */
ulong seq; /* position in box; 1 is oldest */
ulong id; /* number of message directory in upas/fs */
char *fs; /* name of message directory */
char *efs; /* pointer after / in fs; enough space for file name */
ulong size; /* size of fs/rawbody, in bytes, with \r added before \n */
ulong lines; /* number of lines in rawbody */
char *iBuf;
char *info[IMax]; /* all info about message */
char *unixDate;
MAddr *unixFrom;
MAddr *to; /* parsed out address lines */
MAddr *from;
MAddr *replyTo;
MAddr *sender;
MAddr *cc;
MAddr *bcc;
};
/*
* pre-parsed header lines
*/
struct MAddr
{
char *personal;
char *box;
char *host;
MAddr *next;
};
struct MimeHdr
{
char *s;
char *t;
MimeHdr *next;
};
/*
* mapping of integer & names
*/
struct NamedInt
{
char *name;
int v;
};
/*
* lock for all mail file operations
*/
struct MbLock
{
int fd;
};
/*
* parse nodes for imap4rev1 protocol
*
* important: all of these items are allocated
* in one can, so they can be tossed out at the same time.
* this allows leakless parse error recovery by simply tossing the can away.
* however, it means these structures cannot be mixed with the mailbox structures
*/
typedef struct Fetch Fetch;
typedef struct NList NList;
typedef struct SList SList;
typedef struct MsgSet MsgSet;
typedef struct Store Store;
typedef struct Search Search;
/*
* parse tree for fetch command
*/
enum
{
FEnvelope,
FFlags,
FInternalDate,
FRfc822,
FRfc822Head,
FRfc822Size,
FRfc822Text,
FBodyStruct,
FUid,
FBody, /* BODY */
FBodySect, /* BODY [...] */
FBodyPeek,
FMax
};
enum
{
FPAll,
FPHead,
FPHeadFields,
FPHeadFieldsNot,
FPMime,
FPText,
FPMax
};
struct Fetch
{
uchar op; /* F.* operator */
uchar part; /* FP.* subpart for body[] & body.peek[]*/
uchar partial; /* partial fetch? */
long start; /* partial fetch amounts */
long size;
NList *sect;
SList *hdrs;
Fetch *next;
};
/*
* status items
*/
enum{
SMessages = 1 << 0,
SRecent = 1 << 1,
SUidNext = 1 << 2,
SUidValidity = 1 << 3,
SUnseen = 1 << 4,
};
/*
* parse tree for store command
*/
enum
{
STFlags,
STFlagsSilent,
STMax
};
struct Store
{
uchar sign;
uchar op;
int flags;
};
/*
* parse tree for search command
*/
enum
{
SKNone,
SKCharset,
SKAll,
SKAnswered,
SKBcc,
SKBefore,
SKBody,
SKCc,
SKDeleted,
SKDraft,
SKFlagged,
SKFrom,
SKHeader,
SKKeyword,
SKLarger,
SKNew,
SKNot,
SKOld,
SKOn,
SKOr,
SKRecent,
SKSeen,
SKSentBefore,
SKSentOn,
SKSentSince,
SKSet,
SKSince,
SKSmaller,
SKSubject,
SKText,
SKTo,
SKUid,
SKUnanswered,
SKUndeleted,
SKUndraft,
SKUnflagged,
SKUnkeyword,
SKUnseen,
SKMax
};
struct Search
{
int key;
char *s;
char *hdr;
ulong num;
int year;
int mon;
int mday;
MsgSet *set;
Search *left;
Search *right;
Search *next;
};
struct NList
{
ulong n;
NList *next;
};
struct SList
{
char *s;
SList *next;
};
struct MsgSet
{
ulong from;
ulong to;
MsgSet *next;
};
struct Pair
{
ulong start;
ulong stop;
};
#include "bin.h"
extern Bin *parseBin;
extern Biobuf bout;
extern Biobuf bin;
extern char username[UserNameLen];
extern char mboxDir[MboxNameLen];
extern char *fetchPartNames[FPMax];
extern char *site;
extern char *remote;
extern int debug;
#include "fns.h"