subrelay/include/ilib/mail_engine.h

/* mail_engine.h - IMAP fetching & SMTP fan-out engine using libcurl */
#ifndef __MAIL_ENGINE_H__
#define __MAIL_ENGINE_H__

#include <stddef.h>

#include <ilib/configuration.h>

typedef struct mail_message {
  char *raw_data;     /* Full raw RFC 822 byte payload */
  size_t size;        /* Size of raw payload */
  unsigned long uid;  /* IMAP Unique Identifier */
} mail_message_t;

typedef struct mail_list_results {
  unsigned long *uids;
  size_t count;
} mail_list_results_t;

/* Initialize and cleanup global libcurl environment */
int mail_engine_global_init(void);
void mail_engine_global_cleanup(void);

/* IMAP Client API */
int imap_fetch_unseen_uids(const subrelay_config_t *cfg, mail_list_results_t *results);
int imap_fetch_message(const subrelay_config_t *cfg, unsigned long uid, mail_message_t *msg);
int imap_expunge_message(const subrelay_config_t *cfg, unsigned long uid);
void mail_message_free(mail_message_t *msg);
void mail_list_results_free(mail_list_results_t *res);

/* SMTP Client API */
int smtp_send_message(const subrelay_config_t *cfg, 
                      const char **recipients, 
                      size_t recipient_count, 
                      const char *raw_msg, 
                      size_t msg_len);

#endif /* __MAIL_ENGINE_H__ */