/*
* For license terms, see the file COPYING in this directory.
*/
/* constants designating the various supported protocols */
#define P_AUTO 0
#define P_POP2 2
#define P_POP3 3
#define P_IMAP 4
#define P_IMAP_K4 5
#define P_IMAP_GSS 6
#define P_APOP 7
#define P_RPOP 8
#define P_ETRN 9
#if INET6
#define KPOP_PORT "kpop"
#else /* INET6 */
#define KPOP_PORT 1109
#endif /* INET6 */
/* preauthentication types */
#define A_PASSWORD 0 /* password or inline authentication */
#define A_KERBEROS_V4 1 /* preauthenticate w/ Kerberos V4 */
#define A_KERBEROS_V5 2 /* preauthenticate w/ Kerberos V5 */
/*
* Definitions for buffer sizes. We get little help on setting maxima
* from IMAP RFCs up to 2060, so these are mostly from POP3.
*/
#define HOSTLEN 635 /* max hostname length (RFC1123) */
#define POPBUFSIZE 512 /* max length of response (RFC1939) */
#define IDLEN 128 /* max length of UID (RFC1939) */
/* per RFC1939 this should be 40, but Microsoft Exchange ignores that limit */
#define USERNAMELEN 128 /* max POP3 arg length */
/* clear a netBSD kernel parameter out of the way */
#undef MSGBUFSIZE
/*
* The RFC822 limit on message line size is just 998. But
* make this *way* oversized; idiot DOS-world mailers that
* don't line-wrap properly often ship entire paragraphs as
* lines.
*/
#define MSGBUFSIZE 8192
#define PASSWORDLEN 64 /* max password length */
#define DIGESTLEN 33 /* length of MD5 digest */
/* exit code values */
#define PS_SUCCESS 0 /* successful receipt of messages */
#define PS_NOMAIL 1 /* no mail available */
#define PS_SOCKET 2 /* socket I/O woes */
#define PS_AUTHFAIL 3 /* user authorization failed */
#define PS_PROTOCOL 4 /* protocol violation */
#define PS_SYNTAX 5 /* command-line syntax error */
#define PS_IOERR 6 /* bad permissions on rc file */
#define PS_ERROR 7 /* protocol error */
#define PS_EXCLUDE 8 /* client-side exclusion error */
#define PS_LOCKBUSY 9 /* server responded lock busy */
#define PS_SMTP 10 /* SMTP error */
#define PS_DNS 11 /* fatal DNS error */
#define PS_UNDEFINED 12 /* something I hadn't thought of */
#define PS_TRANSIENT 13 /* transient failure (internal use) */
#define PS_REFUSED 14 /* mail refused (internal use) */
#define PS_RETAINED 15 /* message retained (internal use) */
#define PS_TRUNCATED 16 /* headers incomplete (internal use) */
/* output noise level */
#define O_SILENT 0 /* mute, max squelch, etc. */
#define O_NORMAL 1 /* user-friendly */
#define O_VERBOSE 2 /* excessive */
#define SIZETICKER 1024 /* print 1 dot per this many bytes */
/*
* We #ifdef this and use flag rather than bool
* to avoid a type clash with curses.h
*/
#ifndef TRUE
#define FALSE 0
#define TRUE 1
#endif /* TRUE */
typedef char flag;
/* we need to use zero as a flag-uninitialized value */
#define FLAG_TRUE 2
#define FLAG_FALSE 1
struct runctl
{
char *logfile;
char *idfile;
int poll_interval;
flag use_syslog;
flag invisible;
};
struct idlist
{
char *id;
union
{
struct
{
short num;
flag mark; /* UID-index information */
#define UID_UNSEEN 0 /* hasn't been seen */
#define UID_SEEN 1 /* seen, but not deleted */
#define UID_DELETED 2 /* this message has been deleted */
#define UID_EXPUNGED 3 /* this message has been expunged */
}
status;
char *id2;
} val;
struct idlist *next;
};
struct hostdata /* shared among all user connections to given server */
{
/* rc file data */
char *pollname; /* poll label of host */
char *via; /* "true" server name if non-NULL */
struct idlist *akalist; /* server name first, then akas */
struct idlist *localdomains; /* list of pass-through domains */
int protocol; /* protocol type */
#if INET6
char *service; /* IPv6 service name */
void *netsec; /* IPv6 security request */
#else /* INET6 */
int port; /* TCP/IP service port number */
#endif /* INET6 */
int interval; /* # cycles to skip between polls */
int preauthenticate; /* preauthentication mode to try */
int timeout; /* inactivity timout in seconds */
char *envelope; /* envelope address list header */
int envskip; /* skip to numbered envelope header */
char *qvirtual; /* prefix removed from local user id */
flag skip; /* suppress poll in implicit mode? */
flag dns; /* do DNS lookup on multidrop? */
flag uidl; /* use RFC1725 UIDLs? */
flag checkalias; /* try to resolve aliases by comparing IPs ?*/
#ifdef linux
char *interface;
char *monitor;
int monitor_io;
struct interface_pair_s *interface_pair;
#endif /* linux */
/* computed for internal use */
int poll_count; /* count of polls so far */
char *queryname; /* name to attempt DNS lookup on */
char *truename; /* "true name" of server host */
struct hostdata *lead_server; /* ptr to lead query for this server */
int esmtp_options;
};
struct query
{
/* mailserver connection controls */
struct hostdata server;
/* per-user data */
struct idlist *localnames; /* including calling user's name */
int wildcard; /* should unmatched names be passed through */
char *remotename; /* remote login name to use */
char *password; /* remote password to use */
struct idlist *mailboxes; /* list of mailboxes to check */
struct idlist *smtphunt; /* list of SMTP hosts to try forwarding to */
char *smtphost; /* actual SMTP host to point to */
char *smtpaddress; /* address we want to force in the delivery messages */
int antispam; /* listener's antispam response */
char *mda; /* local MDA to pass mail to */
char *preconnect; /* pre-connection command to execute */
char *postconnect; /* post-connection command to execute */
/* per-user control flags */
flag keep; /* if TRUE, leave messages undeleted */
flag fetchall; /* if TRUE, fetch all (not just unseen) */
flag flush; /* if TRUE, delete messages already seen */
flag rewrite; /* if TRUE, canonicalize recipient addresses */
flag stripcr; /* if TRUE, strip CRs in text */
flag forcecr; /* if TRUE, force CRs before LFs in text */
flag pass8bits; /* if TRUE, ignore Content-Transfer-Encoding */
flag dropstatus; /* if TRUE, drop Status lines in mail */
flag mimedecode; /* if TRUE, decode MIME-coded headers/coded printable*/
int limit; /* limit size of retrieved messages */
int fetchlimit; /* max # msgs to get in single poll */
int batchlimit; /* max # msgs to pass in single SMTP session */
int expunge; /* max # msgs to pass between expunges */
struct idlist *oldsaved, *newsaved;
/* internal use */
flag active; /* should we actually poll this server? */
int errcount; /* count transient errors in last pass */
int smtp_socket; /* socket descriptor for SMTP connection */
unsigned int uid; /* UID of user to deliver to */
char digest [DIGESTLEN]; /* md5 digest buffer */
struct query *next; /* next query control block in chain */
};
/*
* Numeric option handling. Numeric option value of zero actually means
* it's unspecified. Value less than zero is zero.
*/
#define NUM_VALUE(n) (((n) == 0) ? -1 : (n))
#define NUM_NONZERO(n) ((n) > 0)
#define NUM_ZERO(n) ((n) < 0)
#define NUM_SPECIFIED(n) ((n) != 0)
#define MULTIDROP(ctl) (ctl->wildcard || \
((ctl)->localnames && (ctl)->localnames->next))
struct method
{
char *name; /* protocol name */
#if INET6
char *service;
#else /* INET6 */
int port; /* service port */
#endif /* INET6 */
flag tagged; /* if true, generate & expect command tags */
flag delimited; /* if true, accept "." message delimiter */
int (*parse_response)(); /* response_parsing function */
int (*password_canonify)(); /* canonicalize password */
int (*getauth)(); /* authorization fetcher */
int (*getrange)(); /* get message range to fetch */
int (*getsizes)(); /* get sizes of messages */
int (*is_old)(); /* check for old message */
int (*fetch_headers)(); /* fetch FROM headera given message */
int (*fetch_body)(); /* fetch a given message */
int (*trail)(); /* eat trailer of a message */
int (*delete)(); /* delete method */
int (*logout_cmd)(); /* logout command */
flag retry; /* can getrange poll for new messages? */
};
/*
* Note: tags are generated with an a%04d format from a 1-origin
* integer sequence number. Length 4 permits transaction numbers
* up to 9999, so we force rollover with % 10000. There's no special
* reason for this format other than to look like the exmples in the
* IMAP RFCs.
*/
#define TAGLEN 6 /* 'a' + 4 digits + NUL */
extern char tag[TAGLEN];
#define TAGMOD 10000
/* list of hosts assembled from run control file and command line */
extern struct query cmd_opts, *querylist;
/* what's returned by envquery */
extern void envquery(int, char **);
/* controls the detail level of status/progress messages written to stderr */
extern int outlevel; /* see the O_.* constants above */
extern int yydebug; /* enable parse debugging */
/* these get computed */
extern int batchcount; /* count of messages sent in current batch */
extern flag peek_capable; /* can we read msgs without setting seen? */
/* miscellaneous global controls */
extern struct runctl run; /* global controls for this run */
extern flag nodetach; /* if TRUE, don't detach daemon process */
extern flag quitmode; /* if --quit was set */
extern flag check_only; /* if --check was set */
extern char *rcfile; /* path name of rc file */
extern int linelimit; /* limit # lines retrieved per site */
extern flag versioninfo; /* emit only version info */
extern char *user; /* name of invoking user */
extern char *home; /* home directory of invoking user */
extern char *fetchmailhost; /* the name of the host running fetchmail */
extern int pass; /* number of re-polling pass */
extern flag configdump; /* dump control blocks as Python dictionary */
/* prototypes for globally callable functions */
/* error.c: Error reporting */
#if defined(HAVE_STDARG_H)
void error_init(int foreground);
void error (int status, int errnum, const char *format, ...);
void error_build (const char *format, ...);
void error_complete (int status, int errnum, const char *format, ...);
void error_at_line (int, int, const char *, unsigned int, const char *, ...);
#else
void error ();
void error_build ();
void error_complete ();
void error_at_line ();
#endif
/* driver.c: transaction support */
#if defined(HAVE_STDARG_H)
void gen_send (int sock, const char *, ... );
int gen_recv(int sock, char *buf, int size);
int gen_transact (int sock, char *, ... );
#else
void gen_send ();
int gen_recv();
int gen_transact ();
#endif
/* rfc822.c: RFC822 header parsing */
char *reply_hack(char *, const char *);
char *nxtaddr(const char *);
/* uid.c: UID support */
void initialize_saved_lists(struct query *, const char *);
struct idlist *save_str(struct idlist **, const char *, flag);
void free_str_list(struct idlist **);
void save_str_pair(struct idlist **, const char *, const char *);
void free_str_pair_list(struct idlist **);
int delete_str(struct idlist **, int);
int str_in_list(struct idlist **, const char *, const flag);
int str_nr_in_list(struct idlist **, const char *);
int str_nr_last_in_list(struct idlist **, const char *);
void str_set_mark( struct idlist **, const char *, const flag);
int count_list( struct idlist **idl );
char *str_from_nr_list( struct idlist **idl, int number );
char *str_find(struct idlist **, int);
char *idpair_find(struct idlist **, const char *);
void append_str_list(struct idlist **, struct idlist **);
void expunge_uids(struct query *);
void update_str_lists(struct query *);
void write_saved_lists(struct query *, const char *);
/* rcfile_y.y */
int prc_parse_file(const char *, const flag);
int prc_filecheck(const char *, const flag);
/* base64.c */
void to64frombits(unsigned char *, const unsigned char *, int);
int from64tobits(char *, const char *);
/* unmime.c */
/* Bit-mask returned by MimeBodyType */
#define MSG_IS_7BIT 0x01
#define MSG_IS_8BIT 0x02
#define MSG_NEEDS_DECODE 0x80
extern void UnMimeHeader(unsigned char *buf);
extern int MimeBodyType(unsigned char *hdrs, int WantDecode);
extern int UnMimeBodyline(unsigned char **buf, int collapsedoubledot);
/* interface.c */
void interface_parse(char *, struct hostdata *);
void interface_note_activity(struct hostdata *);
int interface_approve(struct hostdata *);
/* xmalloc.c */
#if defined(HAVE_VOIDPOINTER)
#define XMALLOCTYPE void
#else
#define XMALLOCTYPE char
#endif
XMALLOCTYPE *xmalloc(int);
XMALLOCTYPE *xrealloc(XMALLOCTYPE *, int);
char *xstrdup(const char *);
/* protocol driver and methods */
int do_protocol(struct query *, const struct method *);
int doPOP2 (struct query *);
int doPOP3 (struct query *);
int doIMAP (struct query *);
int doETRN (struct query *);
/* miscellanea */
struct query *hostalloc(struct query *);
int parsecmdline (int, char **, struct runctl *, struct query *);
char *MD5Digest (unsigned char *);
int POP3_auth_rpa(unsigned char *, unsigned char *, int socket);
int daemonize(const char *, void (*)(int));
char *getpassword(char *);
void escapes(const char *, char *);
char *visbuf(const char *);
char *showproto(int);
void dump_config(struct runctl *runp, struct query *querylist);
void yyerror(const char *);
int yylex(void);
#ifdef __EMX__
void itimerthread(void*);
/* Have to include these first to avoid errors from redefining getcwd
and chdir. They're re-include protected in EMX, so it's okay, I
guess. */
#include <stdlib.h>
#include <unistd.h>
/* Redefine getcwd and chdir to get drive-letter support so we can
find all of our lock files and stuff. */
#define getcwd _getcwd2
#define chdir _chdir2
#endif
#define STRING_DISABLED (char *)-1
/* fetchmail.h ends here */