ref: 5c1feb0ef0b795e5de71e956f9ccddcd5c4b7f21
dir: /sys/src/cmd/faces/plumb.c/
#include <u.h>
#include <libc.h>
#include <draw.h>
#include <plumb.h>
#include <regexp.h>
#include <bio.h>
#include "faces.h"
static int showfd = -1;
static int seefd = -1;
static int logfd = -1;
static char *user;
static char *logtag;
char **maildirs;
int nmaildirs;
void
initplumb(void)
{
showfd = plumbopen("send", OWRITE);
seefd = plumbopen("seemail", OREAD);
if(seefd < 0){
logfd = open("/sys/log/mail", OREAD);
seek(logfd, 0LL, 2);
user = getenv("user");
if(user == nil){
fprint(2, "faces: can't find user name: %r\n");
exits("$user");
}
logtag = emalloc(32+strlen(user)+1);
sprint(logtag, " delivered %s From ", user);
}
}
void
addmaildir(char *dir)
{
maildirs = erealloc(maildirs, (nmaildirs+1)*sizeof(char*));
maildirs[nmaildirs++] = dir;
}
char*
attr(Face *f)
{
static char buf[128];
if(f->str[Sdigest]){
snprint(buf, sizeof buf, "digest=%s", f->str[Sdigest]);
return buf;
}
return nil;
}
void
showmail(Face *f)
{
char *s;
int n;
if(showfd<0 || f->str[Sshow]==nil || f->str[Sshow][0]=='\0')
return;
s = emalloc(128+strlen(f->str[Sshow])+1);
n = sprint(s, "faces\nshowmail\n/mail/fs/\ntext\n%s\n%ld\n%s", attr(f), strlen(f->str[Sshow]), f->str[Sshow]);
write(showfd, s, n);
free(s);
}
char*
value(Plumbattr *attr, char *key, char *def)
{
char *v;
v = plumblookup(attr, key);
if(v)
return v;
return def;
}
void
setname(Face *f, char *sender)
{
char *at, *bang;
char *p;
/* works with UTF-8, although it's written as ASCII */
for(p=sender; *p!='\0'; p++)
*p = tolower(*p);
f->str[Suser] = sender;
at = strchr(sender, '@');
if(at){
*at++ = '\0';
f->str[Sdomain] = estrdup(at);
return;
}
bang = strchr(sender, '!');
if(bang){
*bang++ = '\0';
f->str[Suser] = estrdup(bang);
f->str[Sdomain] = sender;
return;
}
}
int
getc(void)
{
static uchar buf[512];
static int nbuf = 0;
static int i = 0;
while(i == nbuf){
i = 0;
nbuf = read(logfd, buf, sizeof buf);
if(nbuf == 0){
sleep(15000);
continue;
}
if(nbuf < 0)
return -1;
}
return buf[i++];
}
char*
getline(char *buf, int n)
{
int i, c;
for(i=0; i<n-1; i++){
c = getc();
if(c <= 0)
return nil;
if(c == '\n')
break;
buf[i] = c;
}
buf[i] = '\0';
return buf;
}
static char* months[] = {
"jan", "feb", "mar", "apr",
"may", "jun", "jul", "aug",
"sep", "oct", "nov", "dec"
};
static int
getmon(char *s)
{
int i;
for(i=0; i<nelem(months); i++)
if(cistrcmp(months[i], s) == 0)
return i;
return -1;
}
/* Fri Jul 23 14:05:14 EDT 1999 */
ulong
parsedatev(char **a)
{
char *p;
Tm tm;
memset(&tm, 0, sizeof tm);
if((tm.mon=getmon(a[1])) == -1)
goto Err;
tm.mday = strtol(a[2], &p, 10);
if(*p != '\0')
goto Err;
tm.hour = strtol(a[3], &p, 10);
if(*p != ':')
goto Err;
tm.min = strtol(p+1, &p, 10);
if(*p != ':')
goto Err;
tm.sec = strtol(p+1, &p, 10);
if(*p != '\0')
goto Err;
if(strlen(a[4]) != 3)
goto Err;
strcpy(tm.zone, a[4]);
if(strlen(a[5]) != 4)
goto Err;
tm.year = strtol(a[5], &p, 10);
if(*p != '\0')
goto Err;
tm.year -= 1900;
return tm2sec(&tm);
Err:
return time(0);
}
ulong
parsedate(char *s)
{
char *f[10];
int nf;
nf = getfields(s, f, nelem(f), 1, " ");
if(nf < 6)
return time(0);
return parsedatev(f);
}
/* achille Jul 23 14:05:15 delivered jmk From ms.com!bub Fri Jul 23 14:05:14 EDT 1999 (plan9.bell-labs.com!jmk) 1352 */
/* achille Oct 26 13:45:42 remote local!rsc From rsc Sat Oct 26 13:45:41 EDT 2002 (rsc) 170 */
int
parselog(char *s, char **sender, ulong *xtime)
{
char *f[20];
int nf;
nf = getfields(s, f, nelem(f), 1, " ");
if(nf < 14)
return 0;
if(strcmp(f[4], "delivered") == 0 && strcmp(f[5], user) == 0)
goto Found;
if(strcmp(f[4], "remote") == 0 && strncmp(f[5], "local!", 6) == 0 && strcmp(f[5]+6, user) == 0)
goto Found;
return 0;
Found:
*sender = estrdup(f[7]);
*xtime = parsedatev(&f[8]);
return 1;
}
int
logrecv(char **sender, ulong *xtime)
{
char buf[4096];
for(;;){
if(getline(buf, sizeof buf) == nil)
return 0;
if(parselog(buf, sender, xtime))
return 1;
}
}
char*
tweakdate(char *d)
{
char e[8];
/* d, date = "Mon Aug 2 23:46:55 EDT 1999" */
if(strlen(d) < strlen("Mon Aug 2 23:46:55 EDT 1999"))
return estrdup("");
if(strncmp(date, d, 4+4+3) == 0)
snprint(e, sizeof e, "%.5s", d+4+4+3); /* 23:46 */
else
snprint(e, sizeof e, "%.6s", d+4); /* Aug 2 */
return estrdup(e);
}
Face*
nextface(void)
{
int i;
Face *f;
Plumbmsg *m;
char *t, *senderp, *showmailp, *digestp;
ulong xtime;
f = emalloc(sizeof(Face));
for(;;){
if(seefd >= 0){
m = plumbrecv(seefd);
if(m == nil)
killall("error on seemail plumb port");
t = value(m->attr, "mailtype", "");
if(strcmp(t, "delete") == 0)
delete(m->data, value(m->attr, "digest", nil));
else if(strcmp(t, "new") != 0)
fprint(2, "faces: unknown plumb message type %s\n", t);
else for(i=0; i<nmaildirs; i++)
if(strncmp(m->data, maildirs[i], strlen(maildirs[i])) == 0)
goto Found;
plumbfree(m);
continue;
Found:
xtime = parsedate(value(m->attr, "date", date));
digestp = value(m->attr, "digest", nil);
if(alreadyseen(digestp)){
/* duplicate upas/fs can send duplicate messages */
plumbfree(m);
continue;
}
senderp = estrdup(value(m->attr, "sender", "???"));
showmailp = estrdup(m->data);
if(digestp)
digestp = estrdup(digestp);
plumbfree(m);
}else{
if(logrecv(&senderp, &xtime) <= 0)
killall("error reading log file");
showmailp = estrdup("");
digestp = nil;
}
setname(f, senderp);
f->time = xtime;
f->tm = *localtime(xtime);
f->str[Sshow] = showmailp;
f->str[Sdigest] = digestp;
return f;
}
}
char*
iline(char *data, char **pp)
{
char *p;
for(p=data; *p!='\0' && *p!='\n'; p++)
;
if(*p == '\n')
*p++ = '\0';
*pp = p;
return data;
}
Face*
dirface(char *dir, char *num)
{
Face *f;
char *from, *date;
char buf[1024], pwd[1024], *info, *p, *digest;
int n, fd;
ulong len;
/*
* loadmbox leaves us in maildir, so we needn't
* walk /mail/fs/mbox for each face; this makes startup
* a fair bit quicker.
*/
if(getwd(pwd, sizeof pwd) != nil && strcmp(pwd, dir) == 0)
sprint(buf, "%s/info", num);
else
sprint(buf, "%s/%s/info", dir, num);
len = dirlen(buf);
if(len <= 0)
return nil;
fd = open(buf, OREAD);
if(fd < 0)
return nil;
info = emalloc(len+1);
n = readn(fd, info, len);
close(fd);
if(n < 0){
free(info);
return nil;
}
info[n] = '\0';
f = emalloc(sizeof(Face));
from = iline(info, &p); /* from */
iline(p, &p); /* to */
iline(p, &p); /* cc */
iline(p, &p); /* replyto */
date = iline(p, &p); /* date */
setname(f, estrdup(from));
f->time = parsedate(date);
f->tm = *localtime(f->time);
sprint(buf, "%s/%s", dir, num);
f->str[Sshow] = estrdup(buf);
iline(p, &p); /* subject */
iline(p, &p); /* mime content type */
iline(p, &p); /* mime disposition */
iline(p, &p); /* filename */
digest = iline(p, &p); /* digest */
f->str[Sdigest] = estrdup(digest);
free(info);
return f;
}