envelope.h

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#ifndef MUTT_EMAIL_ENVELOPE_H
#define MUTT_EMAIL_ENVELOPE_H

#include "config.h"
#include <stdbool.h>
#include "mutt/lib.h"
#include "address/lib.h"

#define MUTT_ENV_CHANGED_IRT     (1 << 0)  
#define MUTT_ENV_CHANGED_REFS    (1 << 1)  
#define MUTT_ENV_CHANGED_XLABEL  (1 << 2)  
#define MUTT_ENV_CHANGED_SUBJECT (1 << 3)  

#ifdef USE_AUTOCRYPT

struct AutocryptHeader
{
  char *addr;
  char *keydata;
  bool prefer_encrypt : 1;
  bool invalid : 1;
  struct AutocryptHeader *next;
};
#endif

struct Envelope
{
  struct AddressList return_path;      
  struct AddressList from;             
  struct AddressList to;               
  struct AddressList cc;               
  struct AddressList bcc;              
  struct AddressList sender;           
  struct AddressList reply_to;         
  struct AddressList mail_followup_to; 
  struct AddressList x_original_to;    
  char *list_post;                     
  char *subject;                       
  char *real_subj;                     
  char *disp_subj;                     
  char *message_id;                    
  char *supersedes;                    
  char *date;                          
  char *x_label;                       
  char *organization;                  
#ifdef USE_NNTP
  char *newsgroups;                    
  char *xref;                          
  char *followup_to;                   
  char *x_comment_to;                  
#endif
  struct Buffer spam;                  
  struct ListHead references;          
  struct ListHead in_reply_to;         
  struct ListHead userhdrs;            
#ifdef USE_AUTOCRYPT
  struct AutocryptHeader *autocrypt;
  struct AutocryptHeader *autocrypt_gossip;
#endif
  unsigned char changed;               
};

bool             mutt_env_cmp_strict(const struct Envelope *e1, const struct Envelope *e2);
void             mutt_env_free      (struct Envelope **ptr);
void             mutt_env_merge     (struct Envelope *base, struct Envelope **extra);
struct Envelope *mutt_env_new       (void);
int              mutt_env_to_intl   (struct Envelope *env, const char **tag, char **err);
void             mutt_env_to_local  (struct Envelope *e);

#ifdef USE_AUTOCRYPT
struct AutocryptHeader *mutt_autocrypthdr_new(void);
void                    mutt_autocrypthdr_free(struct AutocryptHeader **p);
#endif

#endif /* MUTT_EMAIL_ENVELOPE_H */