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#include <sys/stat.h>
#include <stdio.h> // rename
#include "logmsg.h"
#include "stralloc.h"
#include "buffer.h"
#include "getln.h"
#include "exit.h"
#include <unistd.h>
#include "open.h"
#include "auto_qmail.h"
#include "cdbmake.h"
#include "fmt.h"
#include "scan.h"
#include "byte.h"
#include "case.h"
#define WHO "qmail-mfrules"
int rename(const char *,const char *); // stdio.h
stralloc address = {0};
stralloc data = {0};
stralloc key = {0};
stralloc line = {0};
char inbuf[1024];
buffer bi;
int fd;
int fdtemp;
int match = 1;
struct cdb_make cdb;
void die_nomem()
{
logmsg(WHO,112,FATAL,"out of memory");
}
void die_parse()
{
if (!stralloc_0(&line)) die_nomem();
logmsg(WHO,100,ERROR,B("unable to parse this line: ",line.s));
}
void die_read()
{
logmsg(WHO,111,ERROR,"unable to read control/mailfromrules");
}
void die_write()
{
logmsg(WHO,111,ERROR,"unable to write to control/mailfromrules.tmp");
}
char strnum[FMT_ULONG];
stralloc sanum = {0};
void getnum(char *buf,int len,unsigned long *u)
{
if (!stralloc_copyb(&sanum,buf,len)) die_nomem();
if (!stralloc_0(&sanum)) die_nomem();
if (sanum.s[scan_ulong(sanum.s,u)]) die_parse();
}
void doaddressdata()
{
int i;
int left;
int right;
unsigned long bot;
unsigned long top;
if (byte_chr(address.s,address.len,'=') == address.len)
if (byte_chr(address.s,address.len,'@') == address.len) {
i = byte_chr(address.s,address.len,'-');
if (i < address.len) {
left = byte_rchr(address.s,i,'.');
if (left == i) left = 0; else ++left;
++i;
right = i + byte_chr(address.s + i,address.len - i,'.');
getnum(address.s + left,i - 1 - left,&bot);
getnum(address.s + i,right - i,&top);
if (top > 255) top = 255;
while (bot <= top) {
if (!stralloc_copyb(&key,address.s,left)) die_nomem();
if (!stralloc_catb(&key,strnum,fmt_ulong(strnum,bot))) die_nomem();
if (!stralloc_catb(&key,address.s + right,address.len - right)) die_nomem();
case_lowerb(key.s,key.len);
if (cdb_make_add(&cdb,key.s,key.len,data.s,data.len) == -1) die_write();
++bot;
}
return;
}
}
case_lowerb(address.s,address.len);
case_lowerb(data.s,data.len);
if (cdb_make_add(&cdb,address.s,address.len,data.s,data.len) == -1) die_write();
}
int main()
{
int amper;
int i;
int len;
char *x;
char ch;
umask(033);
if (chdir(auto_qmail) == -1)
logmsg(WHO,111,ERROR,B("unable to chdir to: ",auto_qmail));
fd = open_read("control/mailfromrules");
if (fd == -1) die_read();
buffer_init(&bi,read,fd,inbuf,sizeof(inbuf));
fdtemp = open_trunc("control/mailfromrules.tmp");
if (fdtemp == -1) die_write();
if (cdb_make_start(&cdb,fdtemp) == -1) die_write();
while (match) {
if (getln(&bi,&line,&match,'\n') != 0) die_read();
x = line.s; len = line.len;
if (!len) break;
if (x[0] == '#') continue;
if (x[0] == '\n') continue;
while (len) {
ch = x[len - 1];
if (ch != '\n') if (ch != ' ') if (ch != '\t') break;
--len;
}
line.len = len; /* for die_parse() */
amper = byte_chr(x,len,'&');
if (!amper) die_parse();
if (amper) if (amper == len || amper < 2) die_parse();
if (!stralloc_copyb(&address,x,amper)) die_nomem();
if (!stralloc_copys(&data,"")) die_nomem();
x = line.s + amper + 1; len = line.len - amper - 1;
while (len) {
if (len < 3) die_parse(); /* input checks */
if ( *x == ',' || *x == ' ' || *x == '\t') die_parse();
i = byte_chr(x,len,','); /* &addr1,addr2,.. */
if (i > 0 && i < len) {
if (!stralloc_catb(&data,"+",1)) die_nomem();
if (!stralloc_catb(&data,x,i)) die_nomem();
x += i + 1; len -= i + 1; }
else {
if (!stralloc_catb(&data,"+",1)) die_nomem();
if (!stralloc_catb(&data,x,len)) die_nomem();
len = 0; }
}
doaddressdata();
}
if (cdb_make_finish(&cdb) == -1) die_write();
if (fsync(fdtemp) == -1) die_write();
if (close(fdtemp) == -1) die_write(); /* NFS stupidity */
if (rename("control/mailfromrules.tmp","control/mailfromrules.cdb") == -1)
logmsg(WHO,111,ERROR,"unable to move control/mailfromrules.tmp to control/mailfromrules.cdb");
_exit(0);
}
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