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#include "common.h"
#include "dat.h"
String*
getaddr(Node *p)
{
for(; p; p = p->next){
if(p->s && p->addr)
return p->s;
}
return nil;
}
/* send messae adding our own reply-to and precedence */
void
getaddrs(void)
{
Field *f;
for(f = firstfield; f; f = f->next){
if(f->node->c == FROM && from == nil)
from = getaddr(f->node);
if(f->node->c == SENDER && sender == nil)
sender = getaddr(f->node);
}
}
/* write address file, should be append only */
void
writeaddr(char *file, char *addr, int rem, char *listname)
{
int fd;
Dir nd;
fd = open(file, OWRITE);
if(fd < 0){
fd = create(file, OWRITE, DMAPPEND|0666);
if(fd < 0)
sysfatal("creating address list %s: %r", file);
nulldir(&nd);
nd.mode = DMAPPEND|0666;
dirwstat(file, &nd);
} else
seek(fd, 0, 2);
if(rem)
fprint(fd, "!%s\n", addr);
else
fprint(fd, "%s\n", addr);
close(fd);
if(*addr != '#')
sendnotification(addr, listname, rem);
}
void
remaddr(char *addr)
{
Addr **l;
Addr *a;
for(l = &al; *l; l = &(*l)->next){
a = *l;
if(strcmp(addr, a->addr) == 0){
(*l) = a->next;
free(a);
na--;
break;
}
}
}
int
addaddr(char *addr)
{
Addr **l;
Addr *a;
for(l = &al; *l; l = &(*l)->next){
if(strcmp(addr, (*l)->addr) == 0)
return 0;
}
na++;
*l = a = malloc(sizeof(*a)+strlen(addr)+1);
if(a == nil)
sysfatal("allocating: %r");
a->addr = (char*)&a[1];
strcpy(a->addr, addr);
a->next = nil;
*l = a;
return 1;
}
/* read address file */
void
readaddrs(char *file)
{
Biobuf *b;
char *p;
b = Bopen(file, OREAD);
if(b == nil)
return;
while((p = Brdline(b, '\n')) != nil){
p[Blinelen(b)-1] = 0;
if(*p == '#')
continue;
if(*p == '!')
remaddr(p+1);
else
addaddr(p);
}
Bterm(b);
}
/* start a mailer sending to all the receivers */
int
startmailer(char *name)
{
int pfd[2];
char **av;
int ac;
Addr *a;
putenv("upasname", "/dev/null");
if(pipe(pfd) < 0)
sysfatal("creating pipe: %r");
switch(fork()){
case -1:
sysfatal("starting mailer: %r");
case 0:
close(pfd[1]);
break;
default:
close(pfd[0]);
return pfd[1];
}
dup(pfd[0], 0);
close(pfd[0]);
av = malloc(sizeof(char*)*(na+2));
if(av == nil)
sysfatal("starting mailer: %r");
ac = 0;
av[ac++] = name;
for(a = al; a != nil; a = a->next)
av[ac++] = a->addr;
av[ac] = 0;
exec("/bin/upas/send", av);
sysfatal("execing mailer: %r");
/* not reached */
return -1;
}
void
sendnotification(char *addr, char *listname, int rem)
{
int pfd[2];
Waitmsg *w;
putenv("upasname", "/dev/null");
if(pipe(pfd) < 0)
sysfatal("creating pipe: %r");
switch(fork()){
case -1:
sysfatal("starting mailer: %r");
case 0:
close(pfd[1]);
dup(pfd[0], 0);
close(pfd[0]);
execl("/bin/upas/send", "mlnotify", addr, nil);
sysfatal("execing mailer: %r");
break;
default:
close(pfd[0]);
fprint(pfd[1], "From: %s-owner\n\n", listname);
if(rem)
fprint(pfd[1], "You have removed from the %s mailing list\n", listname);
else{
fprint(pfd[1], "You have been added to the %s mailing list\n", listname);
fprint(pfd[1], "To be removed, send an email to %s-owner containing\n",
listname);
fprint(pfd[1], "the word 'remove' in the subject or body.\n");
}
close(pfd[1]);
/* wait for mailer to end */
while(w = wait()){
if(w->msg != nil && w->msg[0])
sysfatal("%s", w->msg);
free(w);
}
break;
}
}
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