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/*
* Copyright (c) 2014 Sunil Nimmagadda <sunil@nimmagadda.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/tree.h>
#include <sha1.h>
#include "imsgev.h"
#include "iobuf.h"
#include "ioev.h"
#define ARGLEN 40
#define POP3S 0x01
#define F_DELE 0x01
struct passwd;
enum imsg_type {
IMSG_AUTH,
IMSG_MAILDROP_INIT,
IMSG_MAILDROP_RETR,
IMSG_MAILDROP_DELE,
IMSG_MAILDROP_RSET,
IMSG_MAILDROP_LIST,
IMSG_MAILDROP_LISTALL,
IMSG_MAILDROP_UPDATE
};
enum m_type {
M_MBOX,
M_MAILDIR
};
struct msg {
union {
SIMPLEQ_ENTRY(msg) q_entry;
RB_ENTRY(msg) t_entry;
} e;
char hash[SHA1_DIGEST_STRING_LENGTH];
size_t sz;
size_t nlines;
union {
long offset;
const char *fname;
} u;
int flags;
};
struct mdrop {
union {
SIMPLEQ_HEAD(, msg) q_msgs;
RB_HEAD(msgtree, msg) t_msgs;
} e;
size_t nmsgs;
size_t sz;
struct msg **msgs_index; /* random access to msgs */
int fd;
};
struct stats {
size_t nmsgs;
size_t sz;
};
struct retr_req {
unsigned int idx;
unsigned int ntop;
int top;
};
struct retr_res {
size_t nlines;
long offset;
unsigned int ntop;
int top;
};
struct list_req {
unsigned int idx;
int uidl;
};
struct list_res {
unsigned int idx;
union {
size_t sz;
char hash[SHA1_DIGEST_STRING_LENGTH];
} u;
int uidl;
};
struct m_backend {
int (*init)(struct mdrop *, size_t *, size_t *);
int (*retr)(struct mdrop *, unsigned int, size_t *, long *);
int (*update)(struct mdrop *);
};
struct auth_req {
char user[ARGLEN];
char pass[ARGLEN];
};
struct listener {
struct sockaddr_storage ss;
struct event ev;
struct event pause;
int flags;
int sock;
};
enum state {
AUTH,
TRANSACTION,
UPDATE
};
struct session {
SPLAY_ENTRY(session) entry;
struct imsgev iev_maildrop;
struct iobuf iobuf;
struct io io;
char user[ARGLEN];
char pass[ARGLEN];
size_t m_sz;
size_t nmsgs;
struct listener *l;
uint32_t id;
int flags;
enum state state;
};
/* pop3e.c */
void pop3_main(int [2], struct passwd *);
/* session.c */
void session_init(struct listener *, int);
void session_close(struct session *, int);
void session_reply(struct session *, char *, ...);
void session_set_state(struct session *, enum state);
void session_imsgev_init(struct session *, int);
SPLAY_HEAD(session_tree, session);
int session_cmp(struct session *, struct session *);
SPLAY_PROTOTYPE(session_tree, session, entry, session_cmp);
/* maildrop.c */
pid_t maildrop_setup(uint32_t, int [2], struct passwd *, int, const char *);
/* util.c */
void set_nonblocking(int);
void log_init(int);
void logit(int, const char *, ...);
void vlog(int, const char *, va_list);
void fatal(const char *);
void fatalx(const char *);
void *xcalloc(size_t, size_t, const char *);
void iobuf_xfqueue(struct iobuf *, const char *, const char *, ...);
void iobuf_xqueue(struct iobuf *, const char *, const void *, size_t);
int imsgev_xcompose(struct imsgev *, u_int16_t, u_int32_t,
uint32_t, int, void *, u_int16_t, const char *);
int get_index(struct session *, const char *, unsigned int *);
void log_connect(uint32_t, struct sockaddr_storage *, socklen_t);
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