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/*
postman_flstring.c
*/
/*
* Program: Mail Delivery Module
*
* Author: Mark Crispin
* Networks and Distributed Computing
* Computing & Communications
* University of Washington
* Administration Building, AG-44
* Seattle, WA 98195
* Internet: MRC@CAC.Washington.EDU
*
* Date: 5 April 1993
* Last Edited: 2 September 2003
*
* The IMAP tools software provided in this Distribution is
* Copyright 2003 University of Washington.
* The full text of our legal notices is contained in the file called
* CPYRIGHT, included with this Distribution.
*/ /*
* Program: Mail Delivery Module
*
* Author: Mark Crispin
* Networks and Distributed Computing
* Computing & Communications
* University of Washington
* Administration Building, AG-44
* Seattle, WA 98195
* Internet: MRC@CAC.Washington.EDU
*
* Date: 5 April 1993
* Last Edited: 2 September 2003
*
* The IMAP tools software provided in this Distribution is
* Copyright 2003 University of Washington.
* The full text of our legal notices is contained in the file called
* CPYRIGHT, included with this Distribution.
*/
#include <stdio.h>
#include <pwd.h>
#include <errno.h>
extern int errno;
#include <sysexits.h>
#include <sys/file.h>
#include <sys/stat.h>
#include "mail.h"
#include "osdep.h"
#include "misc.h"
#include "linkage.h"
/* Globals */
char *version = "2003(12)"; /* dmail release version */
int debug = NIL; /* debugging (don't fork) */
int flagseen = NIL; /* flag message as seen */
int trycreate = NIL; /* flag saying gotta create before appending */
int critical = NIL; /* flag saying in critical code */
char *sender = NIL; /* message origin */
/* Function prototypes */
void file_string_init (STRING *s,void *data,unsigned long size);
char file_string_next (STRING *s);
void file_string_setpos (STRING *s,unsigned long i);
int main (int argc,char *argv[]);
int deliver (FILE *f,unsigned long msglen,char *user);
long ibxpath (MAILSTREAM *ds,char **mailbox,char *path);
int deliver_safely (MAILSTREAM *prt,STRING *st,char *mailbox,char *path,
char *tmp);
int delivery_unsafe (char *path,struct stat *sbuf,char *tmp);
int fail (char *string,int code);
/* File string driver for file stringstructs */
STRINGDRIVER postman_file_string = {
file_string_init, /* initialize string structure */
file_string_next, /* get next byte in string structure */
file_string_setpos /* set position in string structure */
};
/* Cache buffer for file stringstructs */
#define CHUNKLEN 16384
char chunk[CHUNKLEN];
/* Initialize file string structure for file stringstruct
* Accepts: string structure
* pointer to string
* size of string
*/
void file_string_init (STRING *s,void *data,unsigned long size)
{
s->data = data; /* note fd */
s->size = size; /* note size */
s->chunk = chunk;
s->chunksize = (unsigned long) CHUNKLEN;
SETPOS (s,0); /* set initial position */
}
/* Get next character from file stringstruct
* Accepts: string structure
* Returns: character, string structure chunk refreshed
*/
char file_string_next (STRING *s)
{
char c = *s->curpos++; /* get next byte */
SETPOS (s,GETPOS (s)); /* move to next chunk */
return c; /* return the byte */
}
/* Set string pointer position for file stringstruct
* Accepts: string structure
* new position
*/
void file_string_setpos (STRING *s,unsigned long i)
{
if (i > s->size) i = s->size; /* don't permit setting beyond EOF */
s->offset = i; /* set new offset */
s->curpos = s->chunk; /* reset position */
/* set size of data */
if (s->cursize = min (s->chunksize,SIZE (s)))
{
/* move to that position in the file */
fseek ((FILE *) s->data,s->offset,SEEK_SET);
fread (s->curpos,sizeof (char),(unsigned int) s->cursize,(FILE *) s->data);
}
}
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