#include <sys/time.h>
#include <time.h>
#include <vstream.h>
#include <scan_dir.h>
#include <recipient_list.h>
#include <dsn.h>
typedef struct QMGR_TRANSPORT QMGR_TRANSPORT;
typedef struct QMGR_QUEUE QMGR_QUEUE;
typedef struct QMGR_ENTRY QMGR_ENTRY;
typedef struct QMGR_MESSAGE QMGR_MESSAGE;
typedef struct QMGR_TRANSPORT_LIST QMGR_TRANSPORT_LIST;
typedef struct QMGR_QUEUE_LIST QMGR_QUEUE_LIST;
typedef struct QMGR_ENTRY_LIST QMGR_ENTRY_LIST;
typedef struct QMGR_SCAN QMGR_SCAN;
typedef struct QMGR_FEEDBACK QMGR_FEEDBACK;
#define QMGR_LIST_ROTATE(head, object) { \
head.next->peers.prev = head.prev; \
head.prev->peers.next = head.next; \
head.next = object->peers.next; \
if (object->peers.next) \
head.next->peers.prev = 0; \
head.prev = object; \
object->peers.next = 0; \
}
#define QMGR_LIST_UNLINK(head, type, object) { \
type next = object->peers.next; \
type prev = object->peers.prev; \
if (prev) prev->peers.next = next; \
else head.next = next; \
if (next) next->peers.prev = prev; \
else head.prev = prev; \
object->peers.next = object->peers.prev = 0; \
}
#define QMGR_LIST_APPEND(head, object) { \
object->peers.next = head.next; \
object->peers.prev = 0; \
if (head.next) { \
head.next->peers.prev = object; \
} else { \
head.prev = object; \
} \
head.next = object; \
}
#define QMGR_LIST_PREPEND(head, object) { \
object->peers.prev = head.prev; \
object->peers.next = 0; \
if (head.prev) { \
head.prev->peers.next = object; \
} else { \
head.next = object; \
} \
head.prev = object; \
}
#define QMGR_LIST_INIT(head) { \
head.prev = 0; \
head.next = 0; \
}
struct QMGR_TRANSPORT_LIST {
QMGR_TRANSPORT *next;
QMGR_TRANSPORT *prev;
};
extern struct HTABLE *qmgr_transport_byname;
extern QMGR_TRANSPORT_LIST qmgr_transport_list;
struct QMGR_FEEDBACK {
int hysteresis;
double base;
int index;
};
#define QMGR_FEEDBACK_IDX_NONE 0
#define QMGR_FEEDBACK_IDX_WIN 1
#if 0
#define QMGR_FEEDBACK_IDX_SQRT_WIN 2
#endif
#ifdef QMGR_FEEDBACK_IDX_SQRT_WIN
#include <math.h>
#endif
extern void qmgr_feedback_init(QMGR_FEEDBACK *, const char *, const char *, const char *, const char *);
#ifndef QMGR_FEEDBACK_IDX_SQRT_WIN
#define QMGR_FEEDBACK_VAL(fb, win) \
((fb).index == QMGR_FEEDBACK_IDX_NONE ? (fb).base : (fb).base / (win))
#else
#define QMGR_FEEDBACK_VAL(fb, win) \
((fb).index == QMGR_FEEDBACK_IDX_NONE ? (fb).base : \
(fb).index == QMGR_FEEDBACK_IDX_WIN ? (fb).base / (win) : \
(fb).base / sqrt(win))
#endif
struct QMGR_QUEUE_LIST {
QMGR_QUEUE *next;
QMGR_QUEUE *prev;
};
struct QMGR_TRANSPORT {
int flags;
int pending;
char *name;
int dest_concurrency_limit;
int init_dest_concurrency;
int recipient_limit;
struct HTABLE *queue_byname;
QMGR_QUEUE_LIST queue_list;
QMGR_TRANSPORT_LIST peers;
DSN *dsn;
QMGR_FEEDBACK pos_feedback;
QMGR_FEEDBACK neg_feedback;
int fail_cohort_limit;
int xport_rate_delay;
int rate_delay;
};
#define QMGR_TRANSPORT_STAT_DEAD (1<<1)
#define QMGR_TRANSPORT_STAT_RATE_LOCK (1<<2)
typedef void (*QMGR_TRANSPORT_ALLOC_NOTIFY) (QMGR_TRANSPORT *, VSTREAM *);
extern QMGR_TRANSPORT *qmgr_transport_select(void);
extern void qmgr_transport_alloc(QMGR_TRANSPORT *, QMGR_TRANSPORT_ALLOC_NOTIFY);
extern void qmgr_transport_throttle(QMGR_TRANSPORT *, DSN *);
extern void qmgr_transport_unthrottle(QMGR_TRANSPORT *);
extern QMGR_TRANSPORT *qmgr_transport_create(const char *);
extern QMGR_TRANSPORT *qmgr_transport_find(const char *);
#define QMGR_TRANSPORT_THROTTLED(t) ((t)->flags & QMGR_TRANSPORT_STAT_DEAD)
struct QMGR_ENTRY_LIST {
QMGR_ENTRY *next;
QMGR_ENTRY *prev;
};
struct QMGR_QUEUE {
int dflags;
time_t last_done;
char *name;
char *nexthop;
int todo_refcount;
int busy_refcount;
int window;
double success;
double failure;
double fail_cohorts;
QMGR_TRANSPORT *transport;
QMGR_ENTRY_LIST todo;
QMGR_ENTRY_LIST busy;
QMGR_QUEUE_LIST peers;
DSN *dsn;
time_t clog_time_to_warn;
};
#define QMGR_QUEUE_TODO 1
#define QMGR_QUEUE_BUSY 2
extern int qmgr_queue_count;
extern QMGR_QUEUE *qmgr_queue_create(QMGR_TRANSPORT *, const char *, const char *);
extern QMGR_QUEUE *qmgr_queue_select(QMGR_TRANSPORT *);
extern void qmgr_queue_done(QMGR_QUEUE *);
extern void qmgr_queue_throttle(QMGR_QUEUE *, DSN *);
extern void qmgr_queue_unthrottle(QMGR_QUEUE *);
extern QMGR_QUEUE *qmgr_queue_find(QMGR_TRANSPORT *, const char *);
extern void qmgr_queue_suspend(QMGR_QUEUE *, int);
#define QMGR_QUEUE_STAT_THROTTLED 0
#define QMGR_QUEUE_STAT_SUSPENDED -1
#define QMGR_QUEUE_STAT_SAVED -2
#define QMGR_QUEUE_STAT_BAD -3
#define QMGR_QUEUE_READY(q) ((q)->window > 0)
#define QMGR_QUEUE_THROTTLED(q) ((q)->window == QMGR_QUEUE_STAT_THROTTLED)
#define QMGR_QUEUE_SUSPENDED(q) ((q)->window == QMGR_QUEUE_STAT_SUSPENDED)
#define QMGR_QUEUE_SAVED(q) ((q)->window == QMGR_QUEUE_STAT_SAVED)
#define QMGR_QUEUE_BAD(q) ((q)->window <= QMGR_QUEUE_STAT_BAD)
#define QMGR_QUEUE_STATUS(q) ( \
QMGR_QUEUE_READY(q) ? "ready" : \
QMGR_QUEUE_THROTTLED(q) ? "throttled" : \
QMGR_QUEUE_SUSPENDED(q) ? "suspended" : \
QMGR_QUEUE_SAVED(q) ? "saved" : \
"invalid queue status" \
)
struct QMGR_ENTRY {
VSTREAM *stream;
QMGR_MESSAGE *message;
RECIPIENT_LIST rcpt_list;
QMGR_QUEUE *queue;
QMGR_ENTRY_LIST peers;
};
extern QMGR_ENTRY *qmgr_entry_select(QMGR_QUEUE *);
extern void qmgr_entry_unselect(QMGR_QUEUE *, QMGR_ENTRY *);
extern void qmgr_entry_move_todo(QMGR_QUEUE *, QMGR_ENTRY *);
extern void qmgr_entry_done(QMGR_ENTRY *, int);
extern QMGR_ENTRY *qmgr_entry_create(QMGR_QUEUE *, QMGR_MESSAGE *);
struct QMGR_MESSAGE {
int flags;
int qflags;
int tflags;
long tflags_offset;
int rflags;
VSTREAM *fp;
int refcount;
int single_rcpt;
struct timeval arrival_time;
time_t create_time;
struct timeval active_time;
long warn_offset;
time_t warn_time;
long data_offset;
char *queue_name;
char *queue_id;
char *encoding;
char *sender;
char *dsn_envid;
int dsn_ret;
int smtputf8;
char *verp_delims;
char *filter_xport;
char *inspect_xport;
char *redirect_addr;
long data_size;
long cont_length;
long rcpt_offset;
char *client_name;
char *client_addr;
char *client_port;
char *client_proto;
char *client_helo;
char *sasl_method;
char *sasl_username;
char *sasl_sender;
char *log_ident;
char *rewrite_context;
RECIPIENT_LIST rcpt_list;
};
#define QMGR_READ_FLAG_SEEN_ALL_NON_RCPT (1<<16)
#define QMGR_MESSAGE_LOCKED ((QMGR_MESSAGE *) 1)
extern int qmgr_message_count;
extern int qmgr_recipient_count;
extern int qmgr_vrfy_pend_count;
extern void qmgr_message_free(QMGR_MESSAGE *);
extern void qmgr_message_update_warn(QMGR_MESSAGE *);
extern void qmgr_message_kill_record(QMGR_MESSAGE *, long);
extern QMGR_MESSAGE *qmgr_message_alloc(const char *, const char *, int, mode_t);
extern QMGR_MESSAGE *qmgr_message_realloc(QMGR_MESSAGE *);
#define QMGR_MSG_STATS(stats, message) \
MSG_STATS_INIT2(stats, \
incoming_arrival, message->arrival_time, \
active_arrival, message->active_time)
extern void qmgr_defer_transport(QMGR_TRANSPORT *, DSN *);
extern void qmgr_defer_todo(QMGR_QUEUE *, DSN *);
extern void qmgr_defer_recipient(QMGR_MESSAGE *, RECIPIENT *, DSN *);
extern void qmgr_bounce_recipient(QMGR_MESSAGE *, RECIPIENT *, DSN *);
extern int qmgr_deliver_concurrency;
extern void qmgr_deliver(QMGR_TRANSPORT *, VSTREAM *);
extern int qmgr_active_feed(QMGR_SCAN *, const char *);
extern void qmgr_active_drain(void);
extern void qmgr_active_done(QMGR_MESSAGE *);
extern void qmgr_move(const char *, const char *, time_t);
extern void qmgr_enable_all(void);
extern void qmgr_enable_transport(QMGR_TRANSPORT *);
extern void qmgr_enable_queue(QMGR_QUEUE *);
struct QMGR_SCAN {
char *queue;
int flags;
int nflags;
struct SCAN_DIR *handle;
};
#define QMGR_SCAN_START (1<<0)
#define QMGR_SCAN_ALL (1<<1)
#define QMGR_FLUSH_ONCE (1<<2)
#define QMGR_FLUSH_DFXP (1<<3)
#define QMGR_FLUSH_EACH (1<<4)
extern QMGR_SCAN *qmgr_scan_create(const char *);
extern void qmgr_scan_request(QMGR_SCAN *, int);
extern char *qmgr_scan_next(QMGR_SCAN *);
extern QMGR_TRANSPORT *qmgr_error_transport(const char *);
extern QMGR_QUEUE *qmgr_error_queue(const char *, DSN *);
extern char *qmgr_error_nexthop(DSN *);