mail.c

打魔兽战网的都知道他是什么

/*
 * Copyright (C) 2001  Dizzy 
 * Copyright (C) 2004  Donny Redmond ([e-mail])
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
#define MAIL_INTERNAL_ACCESS
#include "common/setup_before.h"
#include <stdio.h>
#ifdef HAVE_STDDEF_H
# include <stddef.h>
#else
# ifndef NULL
#  define NULL ((void *)0)
# endif
#endif
#ifdef STDC_HEADERS
# include <stdlib.h>
#else
# ifdef HAVE_MALLOC_H
#  include <malloc.h>
# endif
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#else
# ifdef HAVE_STRINGS_H
#  include <strings.h>
# endif
#endif
#include "compat/strcasecmp.h"
#include <ctype.h>
#include <errno.h>
#include "compat/strerror.h"
#ifdef TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# ifdef HAVE_SYS_TIME_H
#  include <sys/time.h>
# else
#  include <time.h>
# endif
#endif
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "compat/statmacros.h"
#include "compat/mkdir.h"
#include "compat/pdir.h"
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#else
# ifdef HAVE_SYS_FILE_H
#  include <sys/file.h>
# endif
#endif
#include "message.h"
#include "connection.h"
#include "common/util.h"
#include "common/eventlog.h"
#include "common/xalloc.h"
#include "account.h"
#include "prefs.h"
#include "mail.h"
#include "common/setup_after.h"


static int identify_mail_function(const char *);
static void mail_usage(t_connection*);
static void mail_func_send(t_connection*,const char *);
static void mail_func_read(t_connection*,const char *);
static void mail_func_delete(t_connection*,const char *);
static int get_mail_quota(t_account *);

/* Mail API */
/* for now this functions are only for internal use */
static t_mailbox * mailbox_open(t_account *, t_mbox_mode mode);
static int mailbox_count(t_mailbox *);
static int mailbox_deliver(t_mailbox *, const char *, const char *);
static t_mail * mailbox_read(t_mailbox *, unsigned int);
static void mailbox_unread(t_mail*);
static struct maillist_struct * mailbox_get_list(t_mailbox *);
static void mailbox_unget_list(struct maillist_struct *);
static int mailbox_delete(t_mailbox *, unsigned int);
static int mailbox_delete_all(t_mailbox *);
static void mailbox_close(t_mailbox *);

static char * clean_str(char *);


static t_mailbox * mailbox_open(t_account * user, t_mbox_mode mode) {
   t_mailbox * rez;
   char * path;
   char const * maildir;

   rez=xmalloc(sizeof(t_mailbox));

   maildir=prefs_get_maildir();
   if (mode & mbox_mode_write)
      p_mkdir(maildir,S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);

   path=xmalloc(strlen(maildir)+1+8+1);
   if (maildir[0]!='\0' && maildir[strlen(maildir)-1]=='/')
      sprintf(path,"%s%06u",maildir,account_get_uid(user));
   else
      sprintf(path,"%s/%06u",maildir,account_get_uid(user));

   if (mode & mbox_mode_write)
      p_mkdir(path,S_IRWXU | S_IXGRP | S_IRGRP | S_IROTH | S_IXOTH);

   if ((rez->maildir=p_opendir(path))==NULL) {
      if (mode & mbox_mode_write) 
         eventlog(eventlog_level_error,__FUNCTION__,"error opening maildir");
      xfree(path);
      xfree(rez);
      return NULL;
   }

   rez->uid=account_get_uid(user);
   rez->path=path;
   return rez;
}

static int mailbox_count(t_mailbox *mailbox) {
   char const * dentry;
   int count=0;

   /* consider NULL mailbox as empty mailbox */
   if (mailbox==NULL) return 0;

   if (mailbox->maildir==NULL) {
      eventlog(eventlog_level_error,__FUNCTION__,"got NULL maildir");
      return -1;
   }
   p_rewinddir(mailbox->maildir);
   while ((dentry=p_readdir(mailbox->maildir))!=NULL) if (dentry[0]!='.') count++;
   return count;
}

static int mailbox_deliver(t_mailbox * mailbox, const char * sender, const char * message) {
   FILE * fd;
   char * filename;

   if (mailbox==NULL) {
      eventlog(eventlog_level_error,__FUNCTION__,"got NULL mailbox");
      return -1;
   }
   if (mailbox->maildir==NULL) {
      eventlog(eventlog_level_error,__FUNCTION__,"got NULL maildir");
      return -1;
   }
   if (mailbox->path==NULL) {
      eventlog(eventlog_level_error,__FUNCTION__,"got NULL path");
      return -1;
   }
   filename=xmalloc(strlen(mailbox->path)+1+15+1);
   sprintf(filename,"%s/%015lu",mailbox->path,(unsigned long)time(NULL));
   if ((fd=fopen(filename,"wb"))==NULL) {
      eventlog(eventlog_level_error,__FUNCTION__,"got NULL file descriptor. check permissions");
      xfree(filename);
      return -1;
   }
   fprintf(fd,"%s\n",sender); /* write the sender on the first line of message */
   fprintf(fd,"%s\n",message); /* then write the actual message */
   fclose(fd);
   xfree(filename);
   return 0;
}

static t_mail * mailbox_read(t_mailbox * mailbox, unsigned int idx) {
   char const * dentry;
   unsigned int i;
   t_mail *     rez;
   FILE *       fd;
   char *       filename;
   
   if (mailbox==NULL) {
      eventlog(eventlog_level_error,__FUNCTION__,"got NULL mailbox");
      return NULL;
   }
   if (mailbox->maildir==NULL) {
      eventlog(eventlog_level_error,__FUNCTION__,"got NULL maildir");
      return NULL;
   }
   rez=xmalloc(sizeof(t_mail));
   p_rewinddir(mailbox->maildir);
   dentry = NULL; /* if idx < 1 we should not crash :) */
   for(i=0;i<idx && (dentry=p_readdir(mailbox->maildir))!=NULL;i++)
     if (dentry[0]=='.') i--;
   if (dentry==NULL) {
      eventlog(eventlog_level_error,__FUNCTION__,"index out of range");
      xfree(rez);
      return NULL;
   }
   rez->timestamp=atoi(dentry);
   filename=xmalloc(strlen(dentry)+1+strlen(mailbox->path)+1);
   sprintf(filename,"%s/%s",mailbox->path,dentry);
   if ((fd=fopen(filename,"rb"))==NULL) {
      eventlog(eventlog_level_error,__FUNCTION__,"error while opening message");
      xfree(rez);
      xfree(filename);
      return NULL;
   }
   xfree(filename);
   rez->sender=xmalloc(256);
   fgets(rez->sender,256,fd); /* maybe 256 isnt the right value to bound a line but right now its all i have :) */
   clean_str(rez->sender);
   rez->message=xmalloc(256);
   fgets(rez->message,256,fd);
   clean_str(rez->message);
   fclose(fd);
   rez->timestamp=atoi(dentry);
   return rez;
}

static void mailbox_unread(t_mail * mail) {
   if (mail==NULL)
     eventlog(eventlog_level_error,__FUNCTION__,"got NULL mail");
   else {
      if (mail->sender==NULL)
	eventlog(eventlog_level_error,__FUNCTION__,"got NULL sender");
      else xfree(mail->sender);
      if (mail->message==NULL)
	eventlog(eventlog_level_error,__FUNCTION__,"got NULL message");
      else xfree(mail->message);
      xfree(mail);
   }
}

static struct maillist_struct * mailbox_get_list(t_mailbox *mailbox) {
   char const * dentry;
   FILE * fd;
   struct maillist_struct *rez=NULL, *p=NULL,*q;
   char *sender,*filename;
   
   if (mailbox==NULL) {
      eventlog(eventlog_level_error,__FUNCTION__,"got NULL mailbox");
      return NULL;
   }
   if (mailbox->maildir==NULL) {
      eventlog(eventlog_level_error,__FUNCTION__,"got NULL maildir");
      return NULL;
   }
   filename=xmalloc(strlen(mailbox->path)+1+15+1);
   p_rewinddir(mailbox->maildir);
   for(;(dentry=p_readdir(mailbox->maildir))!=NULL;)
     if (dentry[0]!='.') {
	q=xmalloc(sizeof(struct maillist_struct));
	sprintf(filename,"%s/%s",mailbox->path,dentry);
	if ((fd=fopen(filename,"rb"))==NULL) {
	   eventlog(eventlog_level_error,__FUNCTION__,"error while opening message file");
	   xfree(filename);
	   xfree(q);
	   return rez;
	}
	sender=xmalloc(256);
	fgets(sender,256,fd);
	clean_str(sender);
	fclose(fd);
	q->sender=sender;
	q->timestamp=atoi(dentry);
	q->next=NULL;
	if (p==NULL) rez=q;
	else p->next=q;
	p=q;
     }
   xfree(filename);
   return rez;
}

static void mailbox_unget_list(struct maillist_struct * maill) {
   struct maillist_struct *p, *q;
   
   for(p=maill;p!=NULL;p=q) {
      if (p->sender!=NULL) xfree(p->sender);
      q=p->next;
      xfree(p);
   }
}

static int mailbox_delete(t_mailbox * mailbox, unsigned int idx) {
   char *       filename;
   char const * dentry;
   unsigned int i;
   int          rez;
   
   if (mailbox==NULL) {
      eventlog(eventlog_level_error,__FUNCTION__,"got NULL mailbox");
      return -1;
   }
   if (mailbox->maildir==NULL) {
      eventlog(eventlog_level_error,__FUNCTION__,"got NULL maildir");
      return -1;
   }
   p_rewinddir(mailbox->maildir);
   dentry = NULL; /* if idx < 1 we should not crash :) */
   for(i=0;i<idx && (dentry=p_readdir(mailbox->maildir))!=NULL;i++)
     if (dentry[0]=='.') i--;
   if (dentry==NULL) {
      eventlog(eventlog_level_error,__FUNCTION__,"index out of range");
      return -1;
   }
   filename=xmalloc(strlen(dentry)+1+strlen(mailbox->path)+1);
   sprintf(filename,"%s/%s",mailbox->path,dentry);
   rez=remove(filename);
   if (rez<0) {
       eventlog(eventlog_level_info,__FUNCTION__,"could not remove file \"%s\" (remove: %s)",filename,pstrerror(errno));
    }
   xfree(filename);
   return rez;
}

static int mailbox_delete_all(t_mailbox * mailbox) {
   char *       filename;
   char const * dentry;
   int          count;
   
   if (mailbox==NULL) {
      eventlog(eventlog_level_error,__FUNCTION__,"got NULL mailbox");
      return -1;
   }
   if (mailbox->maildir==NULL) {
      eventlog(eventlog_level_error,__FUNCTION__,"got NULL maildir");
      return -1;
   }
   filename=xmalloc(strlen(mailbox->path)+1+15+1);