ref: c33fc43408cb22d606d2f621c34a5748cb0e2bc5
dir: /sys/src/cmd/upas/ned/nedmail.c/
#include "common.h"
#include <ctype.h>
#include <plumb.h>
#include <regexp.h>
typedef struct Cmd Cmd;
typedef struct Ctype Ctype;
typedef struct Dirstats Dirstats;
typedef struct Message Message;
typedef Message* (Mfn)(Cmd*,Message*);
enum{
/* nflags */
Nmissing = 1<<0,
Nnoflags = 1<<1,
Narg = 32,
};
struct Message {
Message *next;
Message *prev;
Message *cmd;
Message *child;
Message *parent;
char *path;
int id;
int len;
int fileno; /* number of directory */
char *info;
char *from;
char *to;
char *cc;
char *replyto;
char *date;
char *subject;
char *type;
char *disposition;
char *filename;
uchar flags;
uchar nflags;
};
#pragma varargck type "D" Message*
enum{
Display = 1<<0,
Rechk = 1<<1, /* always use file to check content type */
};
struct Ctype {
char *type;
char *ext;
uchar flag;
char *plumbdest;
Ctype *next;
};
/* first element is the default return value */
Ctype ctype[] = {
{ "application/octet-stream", "bin", Rechk, 0, 0, },
{ "text/plain", "txt", Display, 0 },
{ "text/html", "htm", Display, 0 },
{ "text/html", "html", Display, 0 },
{ "text/tab-separated-values", "tsv", Display, 0 },
{ "text/richtext", "rtx", Display, 0 },
{ "text/rtf", "rtf", Display, 0 },
{ "text", "txt", Display, 0 },
{ "message/rfc822", "msg", 0, 0 },
{ "image/bmp", "bmp", 0, "image" },
{ "image/jpg", "jpg", 0, "image" },
{ "image/jpeg", "jpg", 0, "image" },
{ "image/gif", "gif", 0, "image" },
{ "image/png", "png", 0, "image" },
{ "image/x-png", "png", 0, "image" },
{ "image/tiff", "tif", 0, "image" },
{ "application/pdf", "pdf", 0, "postscript" },
{ "application/postscript", "ps", 0, "postscript" },
{ "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "docx", 0, "docx" },
{ "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "xlsx", 0, "xlsx" },
{ "application/", 0, 0, 0 },
{ "image/", 0, 0, 0 },
{ "multipart/", "mul", 0, 0 },
};
struct Dirstats {
int new;
int del;
int old;
int unread;
};
Mfn acmd;
Mfn bangcmd;
Mfn bcmd;
Mfn dcmd;
Mfn eqcmd;
Mfn Fcmd;
Mfn fcmd;
Mfn fqcmd;
Mfn Hcmd;
Mfn hcmd;
Mfn helpcmd;
Mfn icmd;
Mfn Kcmd;
Mfn kcmd;
Mfn mbcmd;
Mfn mcmd;
Mfn Pcmd;
Mfn pcmd;
Mfn pipecmd;
Mfn qcmd;
Mfn quotecmd;
Mfn rcmd;
Mfn rpipecmd;
Mfn scmd;
Mfn tcmd;
Mfn ucmd;
Mfn wcmd;
Mfn xcmd;
Mfn ycmd;
struct {
char *cmd;
int args;
int addr;
Mfn *f;
char *help;
} cmdtab[] = {
{ "a", 1, 1, acmd, "a\t" "reply to sender and recipients" },
{ "A", 1, 0, acmd, "A\t" "reply to sender and recipients with copy" },
{ "b", 0, 0, bcmd, "b\t" "print the next 10 headers" },
{ "d", 0, 1, dcmd, "d\t" "mark for deletion" },
{ "F", 1, 1, Fcmd, "f\t" "set message flags [+-][aDdfrSs]" },
{ "f", 0, 1, fcmd, "f\t" "file message by from address" },
{ "fq", 0, 1, fqcmd, "fq\t" "print mailbox f appends" },
{ "H", 0, 0, Hcmd, "H\t" "print message's MIME structure" },
{ "h", 0, 0, hcmd, "h\t" "print message summary (,h for all)" },
{ "help", 0, 0, helpcmd, "help\t" "print this info" },
{ "i", 0, 0, icmd, "i\t" "incorporate new mail" },
{ "k", 1, 1, kcmd, "k [flags]\t" "mark mail" },
{ "K", 1, 1, Kcmd, "K [flags]\t" "unmark mail" },
{ "m", 1, 1, mcmd, "m addr\t" "forward mail" },
{ "M", 1, 0, mcmd, "M addr\t" "forward mail with message" },
{ "mb", 1, 0, mbcmd, "mb mbox\t" "switch mailboxes" },
{ "p", 1, 0, pcmd, "p\t" "print the processed message" },
{ "P", 0, 0, Pcmd, "P\t" "print the raw message" },
{ "\"", 0, 0, quotecmd, "\"\t" "print a quoted version of msg" },
{ "\"\"", 0, 0, quotecmd, "\"\"\t" "format and quote message" },
{ "q", 0, 0, qcmd, "q\t" "exit and remove all deleted mail" },
{ "r", 1, 1, rcmd, "r [addr]\t" "reply to sender plus any addrs specified" },
{ "rf", 1, 0, rcmd, "rf [addr]\t" "file message and reply" },
{ "R", 1, 0, rcmd, "R [addr]\t" "reply including copy of message" },
{ "Rf", 1, 0, rcmd, "Rf [addr]\t" "file message and reply with copy" },
{ "s", 1, 1, scmd, "s file\t" "append raw message to file" },
{ "t", 1, 0, tcmd, "t\t" "text formatter" },
{ "u", 0, 0, ucmd, "u\t" "remove deletion mark" },
{ "w", 1, 1, wcmd, "w file\t" "store message contents as file" },
{ "x", 0, 0, xcmd, "x\t" "exit without flushing deleted messages" },
{ "y", 0, 0, ycmd, "y\t" "synchronize with mail box" },
{ "=", 1, 0, eqcmd, "=\t" "print current message number" },
{ "|", 1, 1, pipecmd, "|cmd\t" "pipe message body to a command" },
{ "||", 1, 1, rpipecmd, "||cmd\t" "pipe raw message to a command" },
{ "!", 1, 0, bangcmd, "!cmd\t" "run a command" },
};
struct Cmd {
Message *msgs;
Mfn *f;
int an;
char *av[Narg];
char cmdline[2*1024];
int delete;
};
int dir2message(Message*, int, Dirstats*);
int mdir2message(Message*);
char* extendp(char*, char*);
char* parsecmd(char*, Cmd*, Message*, Message*);
void system(char*, char**, int);
int switchmb(char *, int);
void closemb(void);
Message* dosingleton(Message*, char*);
char* rooted(char*);
int plumb(Message*, Ctype*);
void exitfs(char*);
Message* flushdeleted(Message*);
int didopen;
int doflush;
int interrupted;
int longestfrom = 12;
int longestto = 12;
int hcmdfmt;
Qid mbqid;
int mbvers;
char mbname[Pathlen];
char mbpath[Pathlen];
int natural;
Biobuf out;
int reverse;
char root[Pathlen];
int rootlen;
int startedfs;
Message top;
char *user;
char homewd[Pathlen];
char wd[Pathlen];
char textfmt[Pathlen];
char*
idfmt(char *p, char *e, Message *m)
{
char buf[32];
int sz, l;
for(; (sz = e - p) > 0; ){
l = snprint(buf, sizeof buf, "%d", m->id);
if(l + 1 > sz)
return "*GOK*";
e -= l;
memcpy(e, buf, l);
if((m = m->parent) == &top)
break;
e--;
*e = '.';
}
return e;
}
int
eprint(char *fmt, ...)
{
int n;
va_list args;
Bflush(&out);
va_start(args, fmt);
n = vfprint(2, fmt, args);
va_end(args);
return n;
}
void
dissappeared(void)
{
char buf[ERRMAX];
rerrstr(buf, sizeof buf);
if(strstr(buf, "hungup channel")){
eprint("\n!she's dead, jim\n");
exits(buf);
}
eprint("!message dissappeared\n");
}
int
Dfmt(Fmt *f)
{
char *e, buf[128];
Message *m;
m = va_arg(f->args, Message*);
if(m == nil)
return fmtstrcpy(f, "*GOK*");
if(m == &top)
return 0;
e = buf + sizeof buf - 1;
*e = 0;
return fmtstrcpy(f, idfmt(buf, e, m));
}
char*
readline(char *prompt, char *line, int len)
{
char *p, *e, *q;
int n, dump;
e = line + len;
retry:
dump = 0;
interrupted = 0;
eprint("%s", prompt);
for(p = line;; p += n){
if(p == e){
dump = 1;
p = line;
}
n = read(0, p, e - p);
if(n < 0){
if(interrupted)
goto retry;
return nil;
}
if(n == 0)
return nil;
if(q = memchr(p, '\n', n)){
if(dump){
eprint("!line too long\n");
goto retry;
}
p = q;
break;
}
}
*p = 0;
return line;
}
void
usage(void)
{
fprint(2, "usage: %s [-nrt] [-f mailfile] [-s mailfile]\n", argv0);
fprint(2, " %s -c dir\n", argv0);
exits("usage");
}
void
catchnote(void*, char *note)
{
if(strstr(note, "interrupt") != nil){
interrupted = 1;
noted(NCONT);
}
noted(NDFLT);
}
char*
plural(int n)
{
if (n == 1)
return "";
return "s";
}
void
main(int argc, char **argv)
{
char cmdline[2*1024], prompt[64], *err, *av[4], *mb;
int n, cflag, singleton;
Cmd cmd;
Ctype *cp;
Message *cur, *m, *x;
Binit(&out, 1, OWRITE);
mb = nil;
singleton = 0;
reverse = 1;
cflag = 0;
ARGBEGIN {
case 'c':
cflag = 1;
break;
case 's':
singleton = 1;
case 'f':
mb = EARGF(usage());
break;
case 'r':
reverse = 0;
break;
case 'n':
natural = 1;
reverse = 0;
break;
case 't':
hcmdfmt = 1;
break;
default:
usage();
break;
} ARGEND;
fmtinstall('D', Dfmt);
quotefmtinstall();
doquote = needsrcquote;
getwd(homewd, sizeof homewd);
user = getlog();
if(user == nil || *user == 0)
sysfatal("can't read user name");
if(cflag){
if(argc > 0)
n = creatembox(user, argv[0]);
else
n = creatembox(user, nil);
exits(n? 0: "fail");
}
if(argc)
usage();
if(access("/mail/fs/ctl", 0) < 0){
startedfs = 1;
av[0] = "fs";
av[1] = "-p";
av[2] = 0;
system("/bin/upas/fs", av, -1);
}
switchmb(mb, singleton);
top.path = strdup(root);
for(cp = ctype; cp < ctype + nelem(ctype) - 1; cp++)
cp->next = cp + 1;
if(singleton){
cur = dosingleton(&top, mb);
if(cur == nil){
eprint("no message\n");
exitfs(0);
}
pcmd(nil, cur);
} else {
cur = ⊤
if(icmd(nil, cur) == nil)
sysfatal("can't read %s", top.path);
}
notify(catchnote);
for(;;){
snprint(prompt, sizeof prompt, "%D: ", cur);
/*
* leave space at the end of cmd line in case parsecmd needs to
* add a space after a '|' or '!'
*/
if(readline(prompt, cmdline, sizeof cmdline - 1) == nil)
break;
err = parsecmd(cmdline, &cmd, top.child, cur);
if(err != nil){
eprint("!%s\n", err);
continue;
}
if(singleton && (cmd.f == icmd || cmd.f == ycmd)){
eprint("!illegal command\n");
continue;
}
interrupted = 0;
if(cmd.msgs == nil || cmd.msgs == &top){
if(x = cmd.f(&cmd, &top))
cur = x;
} else for(m = cmd.msgs; m != nil; m = m->cmd){
x = m;
if(cmd.delete){
dcmd(&cmd, x);
/*
* dp acts differently than all other commands
* since its an old lesk idiom that people love.
* it deletes the current message, moves the current
* pointer ahead one and prints.
*/
if(cmd.f == pcmd){
if(x->next == nil){
eprint("!address\n");
cur = x;
break;
} else
x = x->next;
}
}
x = cmd.f(&cmd, x);
if(x != nil)
cur = x;
if(interrupted)
break;
if(singleton && (cmd.delete || cmd.f == dcmd))
qcmd(nil, nil);
}
if(doflush)
cur = flushdeleted(cur);
}
qcmd(nil, nil);
}
char*
file2string(char *dir, char *file)
{
int fd, n;
char *s, *p, *e;
p = s = malloc(512);
e = p + 511;
fd = open(extendp(dir, file), OREAD);
while((n = read(fd, p, e - p)) > 0){
p += n;
if(p == e){
s = realloc(s, (n = p - s) + 512 + 1);
if(s == nil)
sysfatal("malloc: %r");
p = s + n;
e = p + 512;
}
}
close(fd);
*p = 0;
return s;
}
#define Fields 18 /* terrible hack; worth 10% */
#define Minfields 17
void
updateinfo(Message *m)
{
char *s, *f[Fields + 1];
int i, n, sticky;
s = file2string(m->path, "info");
if(s == nil)
return;
if((n = getfields(s, f, nelem(f), 0, "\n")) < Minfields){
for(i = 0; i < n; i++)
fprint(2, "info: %s\n", f[i]);
sysfatal("info file invalid %s %D: %d fields", m->path, m, n);
}
if((m->nflags & Nnoflags) == 0){
sticky = m->flags & Fdeleted;
m->flags = buftoflags(f[17]) | sticky;
}
m->nflags &= ~Nmissing;
free(s);
}
Message*
file2message(Message *parent, char *name)
{
char *path, *f[Fields + 1];
int i, n;
Message *m;
m = mallocz(sizeof *m, 1);
if(m == nil)
return nil;
m->path = path = strdup(extendp(parent->path, name));
m->fileno = atoi(name);
m->info = file2string(path, "info");
m->parent = parent;
n = getfields(m->info, f, nelem(f), 0, "\n");
if(n < Minfields){
for(i = 0; i < n; i++)
fprint(2, "info: [%s]\n", f[i]);
sysfatal("info file invalid %s %D: %d fields", path, m, n);
}
m->from = f[0];
m->to = f[1];
m->cc = f[2];
m->replyto = f[3];
m->date = f[4];
m->subject = f[5];
m->type = f[6];
m->disposition = f[7];
m->filename = f[8];
m->len = strtoul(f[16], 0, 0);
if(n > 17)
m->flags = buftoflags(f[17]);
else
m->nflags |= Nnoflags;
if(m->type)
if(strstr(m->type, "multipart") != nil || strcmp(m->type, "message/rfc822") == 0)
mdir2message(m);
return m;
}
void
freemessage(Message *m)
{
Message *nm, *next;
for(nm = m->child; nm != nil; nm = next){
next = nm->next;
freemessage(nm);
}
free(m->path);
free(m->info);
free(m);
}
/*
* read a directory into a list of messages. at the top level, there may be
* large gaps in message numbers. so we need to read the whole directory.
* and pick out the messages we're interested in. within a message, subparts
* are contiguous and if we don't read the header/body/rawbody, we can avoid forcing
* upas/fs to read the whole message.
*/
int
mdir2message(Message *parent)
{
char buf[Pathlen];
int i, highest, newmsgs;
Dir *d;
Message *first, *last, *m;
/* count current entries */
first = parent->child;
highest = newmsgs = 0;
for(last = parent->child; last != nil && last->next != nil; last = last->next)
if(last->fileno > highest)
highest = last->fileno;
if(last != nil)
if(last->fileno > highest)
highest = last->fileno;
for(i = highest + 1;; i++){
snprint(buf, sizeof buf, "%s/%d", parent->path, i);
if((d = dirstat(buf)) == nil)
break;
if((d->qid.type & QTDIR) == 0){
free(d);
continue;
}
free(d);
snprint(buf, sizeof buf, "%d", i);
m = file2message(parent, buf);
if(m == nil)
break;
m->id = m->fileno;
newmsgs++;
if(first == nil)
first = m;
else
last->next = m;
m->prev = last;
last = m;
}
parent->child = first;
return newmsgs;
}
/*
* 99.9% of the time, we don't need to sort this list.
* however, sometimes email is added to a mailbox
* out of order. or, sape copies it back in from the
* dump. in this case, we've got to sort.
*
* BOTCH. we're not observing any sort of stable
* order. if an old message comes in while upas/fs
* is running, it will appear out of order. restarting
* upas/fs will reorder things.
*/
int
dcmp(Dir *a, Dir *b)
{
return atoi(a->name) - atoi(b->name);
}
void
itsallsapesfault(Dir *d, int n)
{
int c, i, r, t;
/* evade qsort suck */
r = -1;
for(i = 0; i < n; i++){
t = atol(d[i].name);
if(t > r){
c = d[i].name[0];
if(c >= '0' && c <= 9)
break;
}
r = t;
}
if(i != n)
qsort(d, n, sizeof *d, (int (*)(void*, void*))dcmp);
}
int
dir2message(Message *parent, int reverse, Dirstats *s)
{
int i, c, n, fd;
Dir *d;
Message *first, *last, *m, **ll;
memset(s, 0, sizeof *s);
fd = open(parent->path, OREAD);
if(fd < 0)
return -1;
first = parent->child;
last = nil;
if(first)
for(last = first; last->next; last = last->next)
;
n = dirreadall(fd, &d);
itsallsapesfault(d, n);
if(reverse)
ll = &last;
else
ll = &parent->child;
for(i = 0; *ll || i < n; ){
if(i < n && (d[i].qid.type & QTDIR) == 0){
i++;
continue;
}
c = -1;
if(i >= n)
c = 1;
else if(*ll)
c = atoi(d[i].name) - (*ll)->fileno;
if(c < 0){
m = file2message(parent, d[i].name);
if(m == nil)
break;
if(reverse){
m->next = first;
if(first != nil)
first->prev = m;
first = m;
}else{
if(first == nil)
first = m;
else
last->next = m;
m->prev = last;
last = m;
}
*ll = m;
s->new++;
s->unread += (m->flags & Fseen) == 0;
i++;
}else if(c > 0){
(*ll)->nflags |= Nmissing;
s->del++;
}else{
updateinfo(*ll);
s->old++;
i++;
}
if(reverse)
ll = &(*ll)->prev;
else
ll = &(*ll)->next;
}
free(d);
close(fd);
parent->child = first;
/* renumber and file longest from */
i = 1;
longestfrom = 12;
longestto = 12;
for(m = first; m != nil; m = m->next){
m->id = natural ? m->fileno : i++;
n = strlen(m->from);
if(n > longestfrom)
longestfrom = n;
n = strlen(m->to);
if(n > longestto)
longestto = n;
}
return 0;
}
/*
* point directly to a message
*/
Message*
dosingleton(Message *parent, char *path)
{
char *p, *np;
Message *m;
/* walk down to message and read it */
if(strlen(path) < rootlen)
return nil;
if(path[rootlen] != '/')
return nil;
p = path + rootlen + 1;
np = strchr(p, '/');
if(np != nil)
*np = 0;
m = file2message(parent, p);
if(m == nil)
return nil;
parent->child = m;
m->id = 1;
/* walk down to requested component */
while(np != nil){
*np = '/';
np = strchr(np + 1, '/');
if(np != nil)
*np = 0;
for(m = m->child; m != nil; m = m->next)
if(strcmp(path, m->path) == 0)
return m;
if(m == nil)
return nil;
}
return m;
}
/*
* walk the path name an element
*/
char*
extendp(char *dir, char *name)
{
static char buf[Pathlen];
if(strcmp(dir, ".") == 0)
snprint(buf, sizeof buf, "%s", name);
else
snprint(buf, sizeof buf, "%s/%s", dir, name);
return buf;
}
char*
nosecs(char *t)
{
char *p;
p = strchr(t, ':');
if(p == nil)
return t;
p = strchr(p + 1, ':');
if(p != nil)
*p = 0;
return t;
}
char *months[12] =
{
"jan", "feb", "mar", "apr", "may", "jun",
"jul", "aug", "sep", "oct", "nov", "dec"
};
int
month(char *m)
{
int i;
for(i = 0; i < 12; i++)
if(cistrcmp(m, months[i]) == 0)
return i + 1;
return 1;
}
enum
{
Yearsecs = 365*24*60*60,
};
void
cracktime(char *d, char *out, int len)
{
char in[64], *f[6], *dtime;
int n;
long now, then;
Tm tm;
*out = 0;
if(d == nil)
return;
strncpy(in, d, sizeof in);
in[sizeof in - 1] = 0;
n = getfields(in, f, 6, 1, " \t\r\n");
if(n != 6){
/* unknown style */
snprint(out, 16, "%10.10s", d);
return;
}
now = time(0);
memset(&tm, 0, sizeof tm);
if(strchr(f[0], ',') != nil && strchr(f[4], ':') != nil){
/* 822 style */
tm.year = atoi(f[3])-1900;
tm.mon = month(f[2]);
tm.mday = atoi(f[1]);
dtime = nosecs(f[4]);
then = tm2sec(&tm);
} else if(strchr(f[3], ':') != nil){
/* unix style */
tm.year = atoi(f[5])-1900;
tm.mon = month(f[1]);
tm.mday = atoi(f[2]);
dtime = nosecs(f[3]);
then = tm2sec(&tm);
} else {
then = now;
tm = *localtime(now);
dtime = "";
}
if(now - then < Yearsecs/2)
snprint(out, len, "%2d/%2.2d %s", tm.mon, tm.mday, dtime);
else
snprint(out, len, "%2d/%2.2d %4d", tm.mon, tm.mday, tm.year + 1900);
}
int
matchtype(char *s, Ctype *t)
{
return strncmp(t->type, s, strlen(t->type)) == 0;
}
Ctype*
findctype(Message *m)
{
char *p, ftype[256];
int n, pfd[2];
Ctype *a, *cp;
for(cp = ctype; cp; cp = cp->next)
if(matchtype(m->type, cp))
if((cp->flag & Rechk) == 0)
return cp;
else
break;
if(pipe(pfd) < 0)
return ctype;
*ftype = 0;
switch(fork()){
case -1:
break;
case 0:
close(pfd[1]);
close(0);
dup(pfd[0], 0);
close(1);
dup(pfd[0], 1);
execl("/bin/file", "file", "-m", extendp(m->path, "body"), nil);
exits(0);
default:
close(pfd[0]);
n = read(pfd[1], ftype, sizeof ftype - 1);
while(n > 0 && isspace(ftype[n - 1]))
n--;
ftype[n] = 0;
close(pfd[1]);
waitpid();
break;
}
for(cp = ctype; cp; cp = cp->next)
if(matchtype(ftype, cp))
return cp;
if(*ftype == 0 || (p = strchr(ftype, '/')) == nil)
return ctype;
*p++ = 0;
a = mallocz(sizeof *a, 1);
a->type = strdup(ftype);
a->ext = strdup(p);
a->flag = 0;
a->plumbdest = strdup(ftype);
for(cp = ctype; cp->next; cp = cp->next)
;
cp->next = a;
a->next = nil;
return a;
}
/*
* traditional
*/
void
hds(char *buf, Message *m)
{
buf[0] = m->child? 'H': ' ';
buf[1] = m->flags & Fdeleted ? 'd' : ' ';
buf[2] = m->flags & Fstored? 's': ' ';
buf[3] = m->flags & Fseen? ' ': '*';
if(m->flags & Fanswered)
buf[3] = 'a';
if(m->flags & Fflagged)
buf[3] = '\'';
buf[4] = 0;
}
void
pheader0(char *buf, int len, Message *m)
{
char *f, *p, *q, frombuf[40], timebuf[32], h[5];
int max;
hds(h, m);
if(hcmdfmt == 0){
f = m->from;
max = longestfrom;
}else{
snprint(frombuf, sizeof frombuf-5, "%s", m->to);
p = strchr(frombuf, ' ');
if(p != nil)
snprint(p, 5, " ...");
f = frombuf;
max = longestto;
if(max > sizeof frombuf)
max = sizeof frombuf;
}
if(*f == 0)
snprint(buf, len, "%3D %s %6d %s",
m, m->type, m->len, m->filename);
else if(*m->subject){
q = p = strdup(m->subject);
while(*p == ' ')
p++;
if(strlen(p) > 50)
p[50] = 0;
cracktime(m->date, timebuf, sizeof timebuf);
snprint(buf, len, "%3D %s %6d %11.11s %-*.*s %s",
m, h, m->len, timebuf, max, max, f, p);
free(q);
} else {
cracktime(m->date, timebuf, sizeof timebuf);
snprint(buf, len, "%3D %s %6d %11.11s %s",
m, h, m->len, timebuf, f);
}
}
void
pheader(char *buf, int len, int indent, Message *m)
{
char *p, *e, typeid[80];
e = buf + len;
snprint(typeid, sizeof typeid, "%D %s", m, m->type);
if(indent < 6)
p = seprint(buf, e, "%-32s %-6d ", typeid, m->len);
else
p = seprint(buf, e, "%-64s %-6d ", typeid, m->len);
if(m->filename && *m->filename)
p = seprint(p, e, "(file,%s)", m->filename);
if(m->from && *m->from)
p = seprint(p, e, "(from,%s)", m->from);
if(m->subject && *m->subject)
seprint(p, e, "(subj,%s)", m->subject);
}
char sstring[256];
/*
* cmd := range cmd ' ' arg-list ;
* range := address
* | address ',' address
* | 'g' search ;
* address := msgno
* | search ;
* msgno := number
* | number '/' msgno ;
* search := '/' string '/'
* | '%' string '%'
* | '#' (field '#')? re '#'
*
*/
static char*
qstrchr(char *s, int c)
{
for(;; s++){
if(*s == '\\')
s++;
else if(*s == c)
return s;
if(*s == 0)
return nil;
}
}
Reprog*
parsesearch(char **pp, char *buf, int bufl)
{
char *p, *np, *e;
int c, n;
buf[0] = 0;
p = *pp;
c = *p++;
if(c == '#')
snprint(buf, bufl, "from");
np = qstrchr(p, c);
if(c == '#' && np)
if(e = qstrchr(np + 1, c)){
snprint(buf, bufl, "%.*s", utfnlen(p, np - p), p);
p = np + 1;
np = e;
}
if(np != nil){
*np++ = 0;
*pp = np;
} else {
n = strlen(p);
*pp = p + n;
}
if(*p == 0)
p = sstring;
else{
strncpy(sstring, p, sizeof sstring);
sstring[sizeof sstring - 1] = 0;
}
return regcomp(p);
}
enum{
Comma = 1,
};
/*
* search a message for a regular expression match
*/
int
fsearch(Message *m, Reprog *prog, char *field)
{
char buf[4096 + 1];
int i, fd, rv;
uvlong o;
rv = 0;
fd = open(extendp(m->path, field), OREAD);
/*
* march through raw message 4096 bytes at a time
* with a 128 byte overlap to chain the re search.
*/
for(o = 0;; o += i - 128){
i = pread(fd, buf, sizeof buf - 1, o);
if(i <= 0)
break;
buf[i] = 0;
if(regexec(prog, buf, nil, 0)){
rv = 1;
break;
}
if(i < sizeof buf - 1)
break;
}
close(fd);
return rv;
}
int
rsearch(Message *m, Reprog *prog, char*)
{
return fsearch(m, prog, "raw");
}
int
hsearch(Message *m, Reprog *prog, char*)
{
char buf[256];
pheader0(buf, sizeof buf, m);
return regexec(prog, buf, nil, 0);
}
/*
* ack: returns int (*)(Message*, Reprog*, char*)
*/
int (*
chartosearch(int c))(Message*, Reprog*, char*)
{
switch(c){
case '%':
return rsearch;
case '/':
case '?':
return hsearch;
case '#':
return fsearch;
}
return 0;
}
char*
parseaddr(char **pp, Message *first, Message *cur, Message *unspec, Message **mp, int f)
{
char *p, buf[256];
int n, c, sign;
Message *m, *m0;
Reprog *prog;
int (*fn)(Message*, Reprog*, char*);
*mp = nil;
p = *pp;
sign = 0;
if(*p == '+'){
sign = 1;
p++;
*pp = p;
} else if(*p == '-'){
sign = -1;
p++;
*pp = p;
}
switch(*p){
default:
if(sign){
n = 1;
goto number;
}
*mp = unspec;
break;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
n = strtoul(p, pp, 10);
if(n == 0){
if(sign)
*mp = cur;
else
*mp = ⊤
break;
}
number:
m0 = m = nil;
switch(sign){
case 0:
for(m = first; m != nil; m0 = m, m = m->next)
if(m->id == n)
break;
break;
case -1:
if(cur != &top)
for(m = cur; m0 = m, m != nil && n > 0; n--)
m = m->prev;
break;
case 1:
if(cur == &top){
n--;
cur = first;
}
for(m = cur; m != nil && n > 0; m0 = m, n--)
m = m->next;
break;
}
if(m == nil && f&Comma)
m = m0;
if(m == nil)
return "address";
*mp = m;
break;
case '?':
/* legacy behavior. no longer needed */
sign = -1;
case '%':
case '/':
case '#':
c = *p;
fn= chartosearch(c);
prog = parsesearch(pp, buf, sizeof buf);
if(prog == nil)
return "badly formed regular expression";
if(sign == -1){
for(m = cur == &top ? nil : cur->prev; m; m = m->prev)
if(fn(m, prog, buf))
break;
}else{
for(m = cur == &top ? first : cur->next; m; m = m->next)
if(fn(m, prog, buf))
break;
}
if(m == nil)
return "search";
*mp = m;
free(prog);
break;
case '$':
for(m = first; m != nil && m->next != nil; m = m->next)
;
*mp = m;
*pp = p + 1;
break;
case '.':
*mp = cur;
*pp = p + 1;
break;
case ',':
*mp = first;
*pp = p;
break;
}
if(*mp != nil && **pp == '.'){
(*pp)++;
if((m = (*mp)->child) == nil)
return "no sub parts";
return parseaddr(pp, m, m, m, mp, 0);
}
c = **pp;
if(c == '+' || c == '-' || c == '/' || c == '%' || c == '#')
return parseaddr(pp, first, *mp, *mp, mp, 0);
return nil;
}
char*
parsecmd(char *p, Cmd *cmd, Message *first, Message *cur)
{
char buf[256], *err;
int i, c, r;
Reprog *prog;
Message *m, *s, *e, **l, *last;
int (*f)(Message*, Reprog*, char*);
static char errbuf[ERRMAX];
cmd->delete = 0;
l = &cmd->msgs;
*l = nil;
while(*p == ' ' || *p == '\t')
p++;
/* null command is a special case (advance and print) */
if(*p == 0){
if(cur == &top)
m = first;
else {
/* walk to the next message even if we have to go up */
m = cur->next;
while(m == nil && cur->parent != nil){
cur = cur->parent;
m = cur->next;
}
}
if(m == nil)
return "address";
*l = m;
m->cmd = nil;
cmd->an = 0;
cmd->f = pcmd;
return nil;
}
/* global search ? */
if(*p == 'g'){
p++;
/* no search string means all messages */
if(*p == 'k'){
for(m = first; m != nil; m = m->next)
if(m->flags & Fflagged){
*l = m;
l = &m->cmd;
*l = nil;
}
p++;
}else if(*p != '/' && *p != '%' && *p != '#'){
for(m = first; m != nil; m = m->next){
*l = m;
l = &m->cmd;
*l = nil;
}
}else{
/* mark all messages matching this search string */
c = *p;
f = chartosearch(c);
prog = parsesearch(&p, buf, sizeof buf);
if(prog == nil)
return "badly formed regular expression";
for(m = first; m != nil; m = m->next){
if(f(m, prog, buf)){
*l = m;
l = &m->cmd;
*l = nil;
}
}
free(prog);
}
}else{
/* parse an address */
s = e = nil;
err = parseaddr(&p, first, cur, cur, &s, 0);
if(err != nil)
return err;
if(*p == ','){
/* this is an address range */
if(s == &top)
s = first;
p++;
for(last = s; last != nil && last->next != nil; last = last->next)
;
err = parseaddr(&p, first, cur, last, &e, Comma);
if(err != nil)
return err;
/* select all messages in the range */
r = 0;
if(s != nil && e != nil && s->id > e->id)
r = 1;
while(s != nil){
*l = s;
l = &s->cmd;
*l = nil;
if(s == e)
break;
if(r)
s = s->prev;
else
s = s->next;
}
if(s == nil)
return "null address range";
} else {
/* single address */
if(s != &top){
*l = s;
s->cmd = nil;
}
}
}
while(*p == ' ' || *p == '\t')
p++;
/* hack to allow all messages to start with 'd' */
if(*p == 'd' && p[1]){
cmd->delete = 1;
p++;
}
while(*p == ' ' || *p == '\t')
p++;
if(*p == 0)
p = "p";
for(i = nelem(cmdtab) - 1; i >= 0; i--)
if(strncmp(p, cmdtab[i].cmd, strlen(cmdtab[i].cmd)) == 0)
goto found;
return "illegal command";
found:
p += strlen(cmdtab[i].cmd);
snprint(cmd->cmdline, sizeof cmd->cmdline, "%s", p);
cmd->av[0] = cmdtab[i].cmd;
cmd->an = 1 + tokenize(p, cmd->av + 1, nelem(cmd->av) - 2);
if(cmdtab[i].args == 0 && cmd->an > 1){
snprint(errbuf, sizeof errbuf, "%s doesn't take an argument", cmdtab[i].cmd);
return errbuf;
}
cmd->f = cmdtab[i].f;
if(cmdtab[i].addr && (cmd->msgs == nil || cmd->msgs == &top)){
snprint(errbuf, sizeof errbuf, "%s requires an address", cmdtab[i].cmd);
return errbuf;
}
return nil;
}
Message*
aichcmd(Message *m, int indent)
{
char hdr[256];
pheader(hdr, sizeof hdr, indent, m);
Bprint(&out, "%s\n", hdr);
for(m = m->child; m != nil; m = m->next)
aichcmd(m, indent + 1);
return m;
}
Message*
Hcmd(Cmd*, Message *m)
{
if(m == &top)
return nil;
return aichcmd(m, 0);
}
Message*
hcmd(Cmd*, Message *m)
{
char hdr[256];
if(m == &top)
return nil;
pheader0(hdr, sizeof hdr, m);
Bprint(&out, "%s\n", hdr);
return m;
}
Message*
bcmd(Cmd*, Message *m)
{
int i;
Message *om;
om = m;
if(m == &top)
m = top.child;
for(i = 0; i < 10 && m != nil; i++){
hcmd(nil, m);
om = m;
m = m->next;
}
return m != nil? m: om;
}
Message*
ncmd(Cmd*, Message *m)
{
if(m == &top)
return m->child;
return m->next;
}
int
writepart(char *m, char *part, char *s)
{
char *e;
int fd, n;
fd = open(extendp(m, part), OWRITE);
if(fd < 0){
dissappeared();
return -1;
}
for(e = s + strlen(s); e - s > 0; s += n){
if((n = write(fd, s, e - s)) <= 0){
eprint("!writepart:%s: %r\n", part);
break;
}
if(interrupted)
break;
}
close(fd);
return s == e? 0: -1;
}
Message *xpipecmd(Cmd*, Message*, char*);
Message*
printfmt(Message *m, char *part, char *cmd)
{
Cmd c;
c.an = 2;
snprint(c.cmdline, sizeof c.cmdline, "%s", cmd);
Bflush(&out);
return xpipecmd(&c, m, part);
}
int
printpart0(Message *m, char *part)
{
char buf[4096];
int n, fd, tot;
fd = open(extendp(m->path, part), OREAD);
if(fd < 0){
dissappeared();
return 0;
}
tot = 0;
while((n = read(fd, buf, sizeof buf)) > 0){
if(interrupted)
break;
if(Bwrite(&out, buf, n) <= 0)
break;
tot += n;
}
close(fd);
return tot;
}
int
printpart(Message *m, char *part, char *cmd)
{
if(cmd == nil || cmd[0] == 0)
return printpart0(m, part);
printfmt(m, part, cmd);
return 1;
}
int
printhtml(Message *m)
{
Cmd c;
memset(&c, 0, sizeof c);
c.an = 3;
snprint(c.cmdline, sizeof c.cmdline, "/bin/htmlfmt -l60 -cutf8");
eprint("!/bin/htmlfmt\n");
pipecmd(&c, m);
return 0;
}
Message*
Pcmd(Cmd*, Message *m)
{
if(m == &top)
return ⊤
if(m->parent == &top)
printpart(m, "unixheader", nil);
printpart(m, "raw", nil);
return m;
}
void
compress(char *p)
{
char *np;
int last;
last = ' ';
for(np = p; *p; p++){
if(*p != ' ' || last != ' '){
last = *p;
*np++ = last;
}
}
*np = 0;
}
void
setflags(Message *m, char *f)
{
uchar f0;
f0 = m->flags;
txflags(f, &m->flags);
if(f0 != m->flags)
if((m->nflags & Nnoflags) == 0)
writepart(m->path, "flags", f);
}
Message*
Fcmd(Cmd *c, Message *m)
{
int i;
for(i = 1; i < c->an; i++)
setflags(m, c->av[i]);
return m;
}
void
seen(Message *m)
{
setflags(m, "s");
}
/*
* sleeze
*/
int
magicpart(Message *m, char *s, char *part)
{
char buf[4096];
int n, fd, c;
fd = open(extendp(s, part), OREAD);
if(fd < 0){
if(strcmp(part, "id") == 0)
Bprint(&out, "%D ", m);
else if(strcmp(part, "fpath") == 0)
Bprint(&out, "%s ", rooted(m->path));
else
Bprint(&out, "%s ", part);
return 0;
}
c = 0;
while((n = read(fd, buf, sizeof buf)) > 0){
c = -1;
if(interrupted)
break;
if(Bwrite(&out, buf, n) <= 0)
break;
c = buf[n - 1];
}
close(fd);
if(!interrupted && n != -1 && c != -1)
if(strstr(part, "body") != nil || strcmp(part, "rawunix") == 0)
seen(m);
return c;
}
Message*
pcmd0(Cmd *c, Message *m, int mayplumb, char *tfmt)
{
char *s, buf[128];
int i, ch;
Ctype *cp;
Message *nm;
if(m == &top)
return ⊤
if(c && c->an >= 2){
ch = 0;
for(i = 1; i < c->an; i++)
ch = magicpart(m, m->path, c->av[i]);
if(ch != '\n')
Bprint(&out, "\n");
return m;
}
if(m->parent == &top){
seen(m);
printpart(m, "unixheader", nil);
}
if(printpart(m, "header", nil) > 0)
Bprint(&out, "\n");
cp = findctype(m);
if(cp->flag & Display){
if(strcmp(m->type, "text/html") == 0)
printhtml(m);
else
printpart(m, "body", tfmt);
}else if(strcmp(m->type, "multipart/alternative") == 0){
for(nm = m->child; nm != nil; nm = nm->next){
cp = findctype(nm);
if(cp->ext != nil && strncmp(cp->ext, "txt", 3) == 0)
break;
}
if(nm == nil)
for(nm = m->child; nm != nil; nm = nm->next){
cp = findctype(nm);
if(cp->flag & Display)
break;
}
if(nm != nil)
pcmd0(nil, nm, mayplumb, tfmt);
else
hcmd(nil, m);
}else if(strncmp(m->type, "multipart/", 10) == 0){
nm = m->child;
if(nm != nil){
/* always print first part */
pcmd0(nil, nm, mayplumb, tfmt);
for(nm = nm->next; nm != nil; nm = nm->next){
s = rooted(nm->path);
cp = findctype(nm);
pheader(buf, sizeof buf, -1, nm);
compress(buf);
if(strcmp(nm->disposition, "inline") == 0){
if(cp->ext != nil)
Bprint(&out, "\n--- %s %s/body.%s\n\n",
buf, s, cp->ext);
else
Bprint(&out, "\n--- %s %s/body\n\n",
buf, s);
pcmd0(nil, nm, 0, tfmt);
} else {
if(cp->ext != nil)
Bprint(&out, "\n!--- %s %s/body.%s\n",
buf, s, cp->ext);
else
Bprint(&out, "\n!--- %s %s/body\n",
buf, s);
}
}
} else {
hcmd(nil, m);
}
}else if(strcmp(m->type, "message/rfc822") == 0)
pcmd(nil, m->child);
else if(!mayplumb){
}else if(plumb(m, cp) >= 0){
Bprint(&out, "\n!--- using plumber to type %s", cp->type);
if(strcmp(cp->type, m->type) != 0)
Bprint(&out, " (was %s)", m->type);
Bprint(&out, "\n");
}else
Bprint(&out, "\n!--- cannot display %s\n", cp->type);
return m;
}
Message*
pcmd(Cmd *c, Message *m)
{
return pcmd0(c, m, 1, textfmt);
}
Message*
tcmd(Cmd *c, Message *m)
{
switch(c->an){
case 1:
if(textfmt[0] != 0)
textfmt[0] = 0;
else
snprint(textfmt, sizeof textfmt, "%s", "upas/tfmt");
break;
default:
snprint(textfmt, sizeof textfmt, "%s", c->cmdline);
break;
}
eprint("!textfmt %s\n", textfmt);
return m;
}
void
printpartindented(char *s, char *part, char *indent)
{
char *p;
Biobuf *b;
b = Bopen(extendp(s, part), OREAD);
if(b == nil){
dissappeared();
return;
}
while((p = Brdline(b, '\n')) != nil){
if(interrupted)
break;
p[Blinelen(b)-1] = 0;
if(Bprint(&out, "%s%s\n", indent, p) < 0)
break;
}
Bprint(&out, "\n");
Bterm(b);
}
void
printpartindent2(char *s, char *part, char *indent)
{
Cmd c;
memset(&c, 0, sizeof c);
snprint(c.cmdline, sizeof c.cmdline, "fmt -q '> ' %s | sed 's/^/%s/g' ",
rooted(extendp(s, part)), indent);
Bflush(&out);
bangcmd(&c, nil);
}
Message*
quotecmd0(Cmd *c, Message *m, void (*p)(char*, char*, char*))
{
Ctype *cp;
Message *nm;
if(m == &top)
return ⊤
Bprint(&out, "\n");
if(m->from != nil && *m->from)
Bprint(&out, "On %s, %s wrote:\n", m->date, m->from);
cp = findctype(m);
if(cp->flag & Display)
p(m->path, "body", "> ");
else if(strcmp(m->type, "multipart/alternative") == 0){
for(nm = m->child; nm != nil; nm = nm->next){
cp = findctype(nm);
if(cp->ext != nil && strncmp(cp->ext, "txt", 3) == 0)
break;
}
if(nm == nil)
for(nm = m->child; nm != nil; nm = nm->next){
cp = findctype(nm);
if(cp->flag & Display)
break;
}
if(nm != nil)
quotecmd(c, nm);
}else if(strncmp(m->type, "multipart/", 10) == 0){
nm = m->child;
if(nm != nil){
cp = findctype(nm);
if(cp->flag & Display || strncmp(m->type, "multipart/", 10) == 0)
quotecmd(c, nm);
}
}
return m;
}
Message*
quotecmd(Cmd *c, Message *m)
{
void (*p)(char*, char*, char*);
p = printpartindented;
if(strstr(c->av[0], "\"\"") != nil)
p = printpartindent2;
return quotecmd0(c, m, p);
}
/* really delete messages */
Message*
flushdeleted(Message *cur)
{
char buf[1024], *p, *e, *msg;
int i, deld, n, fd;
Message *m, **l;
doflush = 0;
deld = 0;
fd = open("/mail/fs/ctl", ORDWR);
if(fd < 0){
eprint("!can't delete mail, opening /mail/fs/ctl: %r\n");
exitfs(0);
}
e = buf + sizeof buf;
p = seprint(buf, e, "delete %s", mbname);
n = 0;
for(l = &top.child; *l != nil;){
m = *l;
if((m->nflags & Nmissing) == 0)
if((m->flags & Fdeleted) == 0){
l = &(*l)->next;
continue;
}
/* don't return a pointer to a deleted message */
if(m == cur)
cur = m->next;
deld++;
if(m->flags & Fdeleted){
msg = strrchr(m->path, '/');
if(msg == nil)
msg = m->path;
else
msg++;
if(e - p < 10){
write(fd, buf, p - buf);
n = 0;
p = seprint(buf, e, "delete %s", mbname);
}
p = seprint(p, e, " %s", msg);
n++;
}
/* unchain and free */
*l = m->next;
if(m->next)
m->next->prev = m->prev;
freemessage(m);
}
if(n)
write(fd, buf, p - buf);
close(fd);
if(deld)
Bprint(&out, "!%d message%s deleted\n", deld, plural(deld));
/* renumber */
i = 1;
for(m = top.child; m != nil; m = m->next)
m->id = natural ? m->fileno : i++;
/*
* if we're out of messages, go back to first
* if no first, return the fake first
*/
if(cur == nil){
if(top.child)
return top.child;
else
return ⊤
}
return cur;
}
Message*
mbcmd(Cmd *c, Message*)
{
char *mb, oldmb[Pathlen];
Message *m, **l;
switch(c->an){
case 1:
mb = "mbox";
break;
case 2:
mb = c->av[1];
break;
default:
eprint("!usage: mbcmd [mbox]\n");
return nil;
}
/* flushdeleted(nil); ? */
for(l = &top.child; *l; ){
m = *l;
*l = m->next;
freemessage(m);
}
top.child = nil;
strcpy(oldmb, mbpath);
if(switchmb(mb, 0) < 0){
eprint("!no mb\n");
if(switchmb(oldmb, 0) < 0){
eprint("!mb disappeared\n");
exits("fail");
}
}
icmd(nil, nil);
interrupted = 1; /* no looping */
return ⊤
}
Message*
qcmd(Cmd*, Message*)
{
flushdeleted(nil);
if(didopen)
closemb();
Bflush(&out);
exitfs(0);
return nil;
}
Message*
ycmd(Cmd *c, Message *m)
{
doflush = 1;
return icmd(c, m);
}
Message*
xcmd(Cmd*, Message*)
{
exitfs(0);
return nil;
}
Message*
eqcmd(Cmd*, Message *m)
{
Bprint(&out, "%D\n", m);
return m;
}
Message*
dcmd(Cmd*, Message *m)
{
while(m->parent != &top)
m = m->parent;
m->flags |= Fdeleted;
return m;
}
Message*
ucmd(Cmd*, Message *m)
{
if(m == &top)
return nil;
while(m->parent != &top)
m = m->parent;
m->flags &= ~Fdeleted;
return m;
}
int
skipscan(void)
{
int r;
Dir *d;
static int lastvers = -1;
d = dirstat(top.path);
r = d && d->qid.path == mbqid.path && d->qid.vers == mbqid.vers;
r = r && mbvers == lastvers;
if(d != nil){
mbqid = d->qid;
lastvers = mbvers;
}
free(d);
return r;
}
Message*
icmd(Cmd *c, Message *m)
{
char buf[128], *p, *e;
Dirstats s;
if(skipscan())
return m;
if(dir2message(&top, reverse, &s) < 0)
return nil;
p = buf;
e = buf + sizeof buf;
if(s.new > 0 && c == nil){
p = seprint(p, e, "%d message%s", s.new, plural(s.new));
if(s.unread > 0)
p = seprint(p, e, ", %d unread", s.unread);
}
else if(s.new > 0)
Bprint(&out, "%d new message%s", s.new, plural(s.new));
if(s.new && s.del)
p = seprint(p, e, "; ");
if(s.del > 0)
p = seprint(p, e, "%d deleted message%s", s.del, plural(s.del));
if(s.new + s.del)
p = seprint(p, e, "\n");
if(p > buf){
Bflush(&out);
eprint("%s", buf);
}
return m;
}
Message*
kcmd0(Cmd *c, Message *m)
{
char *f, *s;
int sticky;
if(c->an > 2){
eprint("!usage k [flags]\n");
return nil;
}
if(c->f == kcmd)
f = "f";
else
f = "-f";
if(c->an == 2)
f = c->av[1];
setflags(m, f);
if(c->an == 2 && (m->nflags & Nnoflags) == 0){
sticky = m->flags & Fdeleted;
s = file2string(m->path, "flags");
m->flags = buftoflags(s) | sticky;
free(s);
}
return m;
}
Message*
kcmd(Cmd *c, Message *m)
{
return kcmd0(c, m);
}
Message*
Kcmd(Cmd *c, Message *m)
{
return kcmd0(c, m);
}
Message*
helpcmd(Cmd*, Message *m)
{
int i;
Bprint(&out, "Commands are of the form [<range>] <command> [args]\n");
Bprint(&out, "<range> := <addr> | <addr>','<addr>| 'g'<search>\n");
Bprint(&out, "<addr> := '.' | '$' | '^' | <number> | <search> | <addr>'+'<addr> | <addr>'-'<addr>\n");
Bprint(&out, "<search> := 'k' | '/'<re>'/' | '?'<re>'?' | '%%'<re>'%%' | '#' <field> '#' <re> '#' \n");
Bprint(&out, "<command> :=\n");
for(i = 0; i < nelem(cmdtab); i++)
Bprint(&out, "%s\n", cmdtab[i].help);
return m;
}
/* ed thinks this is a good idea */
void
marshal(char **path, char **argv0)
{
char *s;
s = getenv("marshal");
if(s == nil || *s == 0)
s = "/bin/upas/marshal";
*path = s;
*argv0 = strrchr(s, '/') + 1;
if(*argv0 == (char*)1)
*argv0 = s;
}
int
tomailer(char **av)
{
int pid, i;
char *p, *a;
Waitmsg *w;
switch(pid = fork()){
case -1:
eprint("can't fork: %r\n");
return -1;
case 0:
marshal(&p, &a);
Bprint(&out, "!%s", p);
for(i = 1; av[i]; i++)
Bprint(&out, " %q", av[i]);
Bprint(&out, "\n");
Bflush(&out);
av[0] = a;
chdir(wd);
exec(p, av);
eprint("couldn't exec %s\n", p);
exits(0);
default:
w = wait();
if(w == nil){
if(interrupted)
postnote(PNPROC, pid, "die");
waitpid();
return -1;
}
if(w->msg[0]){
eprint("mailer failed: %s\n", w->msg);
free(w);
return -1;
}
free(w);
// Bprint(&out, "!\n");
break;
}
return 0;
}
/*
* like tokenize but obey "" quoting
*/
int
tokenize822(char *str, char **args, int max)
{
int na, intok, inquote;
if(max <= 0)
return 0;
intok = inquote = 0;
for(na=0; ;str++)
switch(*str) {
case ' ':
case '\t':
if(inquote)
goto Default;
/* fall through */
case '\n':
*str = 0;
if(!intok)
continue;
intok = 0;
if(na < max)
continue;
/* fall through */
case 0:
return na;
case '"':
inquote ^= 1;
/* fall through */
Default:
default:
if(intok)
continue;
args[na++] = str;
intok = 1;
}
}
static char *rec[] = {"Re: ", "AW:", };
static char *fwc[] = {"Fwd: ", };
char*
addrecolon(char **tab, int n, char *s)
{
char *prefix;
int i;
prefix = "";
for(i = 0; i < n; i++)
if(cistrncmp(s, tab[i], strlen(tab[i]) - 1) == 0)
break;
if(i == n)
prefix = tab[0];
return smprint("%s%s", prefix, s);
}
Message*
rcmd(Cmd *c, Message *m)
{
char *from, *path, *subject, *rpath, *addr, *av[128];
int i, ai;
Message *nm;
ai = 1;
av[ai++] = "-8";
addr = path = subject = nil;
for(nm = m; nm != ⊤ nm = nm->parent)
if(*nm->replyto != 0){
addr = nm->replyto;
break;
}
if(addr == nil){
eprint("!no reply address\n");
return nil;
}
if(nm == &top){
print("!noone to reply to\n");
return nil;
}
for(nm = m; nm != ⊤ nm = nm->parent)
if(*nm->subject){
av[ai++] = "-s";
subject = addrecolon(rec, nelem(rec), nm->subject);
av[ai++] = subject;
break;
}
av[ai++] = "-R";
av[ai++] = rpath = strdup(rooted(m->path));
if(strchr(c->av[0], 'f') != nil){
fcmd(c, m);
av[ai++] = "-F";
}
if(strchr(c->av[0], 'R') != nil){
av[ai++] = "-t";
av[ai++] = "message/rfc822";
av[ai++] = "-A";
path = strdup(rooted(extendp(m->path, "raw")));
av[ai++] = path;
}
for(i = 1; i < c->an && ai < nelem(av)-1; i++)
av[ai++] = c->av[i];
ai += tokenize822(from = strdup(addr), &av[ai], nelem(av) - ai);
av[ai] = 0;
if(tomailer(av) == -1)
m = nil;
else
m->flags |= Fanswered;
free(path);
free(rpath);
free(subject);
free(from);
return m;
}
Message*
mcmd(Cmd *c, Message *m)
{
char *subject, *av[128];
int i, ai;
if(c->an < 2){
eprint("!usage: M list-of addresses\n");
return nil;
}
ai = 1;
subject = nil;
if(m->subject){
av[ai++] = "-s";
subject = addrecolon(fwc, nelem(fwc), m->subject);
av[ai++] = subject;
}
av[ai++] = "-t";
if(m->parent == &top)
av[ai++] = "message/rfc822";
else
av[ai++] = "mime";
av[ai++] = "-A";
av[ai++] = rooted(extendp(m->path, "raw"));
if(strchr(c->av[0], 'M') == nil)
av[ai++] = "-n";
else
av[ai++] = "-8";
for(i = 1; i < c->an && ai < nelem(av)-1; i++)
av[ai++] = c->av[i];
av[ai] = 0;
if(tomailer(av) == -1)
m = nil;
else
m->flags |= Fanswered;
free(subject);
return m;
}
Message*
acmd(Cmd *c, Message *m)
{
char *av[128], *rpath, *subject, *from, *to, *cc;
int i, ai;
if(m->from == nil || m->to == nil || m->cc == nil){
eprint("!bad message\n");
return nil;
}
ai = 1;
av[ai++] = "-8";
av[ai++] = "-R";
av[ai++] = rpath = strdup(rooted(m->path));
subject = nil;
if(m->subject && *m->subject){
av[ai++] = "-s";
subject = addrecolon(rec, nelem(rec), m->subject);
av[ai++] = subject;
}
if(strchr(c->av[0], 'A') != nil){
av[ai++] = "-t";
av[ai++] = "message/rfc822";
av[ai++] = "-A";
av[ai++] = rooted(extendp(m->path, "raw"));
}
for(i = 1; i < c->an && ai < nelem(av)-1; i++)
av[ai++] = c->av[i];
ai += tokenize822(from = strdup(m->from), &av[ai], nelem(av) - ai);
ai += tokenize822(to = strdup(m->to), &av[ai], nelem(av) - ai);
ai += tokenize822(cc = strdup(m->cc), &av[ai], nelem(av) - ai);
av[ai] = 0;
if(tomailer(av) == -1)
m = nil;
else
m->flags |= Fanswered;
free(from);
free(to);
free(cc);
free(subject);
free(rpath);
return m;
}
int
appendtofile(Message *m, char *part, char *base, int mbox, int f)
{
char *folder, path[Pathlen];
int in, rv, rp;
in = open(extendp(m->path, part), OREAD);
if(in == -1){
dissappeared();
return -1;
}
rp = 0;
if(*base == '/')
folder = base;
else if(!mbox){
snprint(path, sizeof path, "%s/%s", wd, base);
folder = path;
rp = 1;
}else if(f)
folder = ffoldername(mbpath, user, base);
else
folder = foldername(mbpath, user, base);
if(folder == nil)
return -1;
if(mbox)
rv = fappendfolder(0, 0, folder, in);
else
rv = fappendfile(m->from, folder, in);
close(in);
if(rv >= 0){
eprint("!saved in %s\n", rp? base: folder);
setflags(m, "S");
}else
eprint("!error %r\n");
return rv;
}
Message*
scmd(Cmd *c, Message *m)
{
char *file;
switch(c->an){
case 1:
file = "stored";
break;
case 2:
file = c->av[1];
break;
default:
eprint("!usage: s filename\n");
return nil;
}
if(appendtofile(m, "rawunix", file, 1, 0) < 0)
return nil;
return m;
}
Message*
wcmd(Cmd *c, Message *m)
{
char *file;
switch(c->an){
case 2:
file = c->av[1];
break;
case 1:
if(*m->filename == 0){
eprint("!usage: w filename\n");
return nil;
}
file = strrchr(m->filename, '/');
if(file != nil)
file++;
else
file = m->filename;
break;
default:
eprint("!usage: w filename\n");
return nil;
}
if(appendtofile(m, "body", file, 0, 0) < 0)
return nil;
return m;
}
typedef struct Xtab Xtab;
struct Xtab {
char *a;
char *b;
};
Xtab *xtab;
int nxtab;
void
loadxfrom(int fd)
{
char *f[3], *s, *p;
int n, a, inc;
Biobuf b;
Xtab *x;
Binit(&b, fd, OREAD);
a = 0;
inc = 100;
for(; s = Brdstr(&b, '\n', 1);){
if(p = strchr(s, '#'))
*p = 0;
n = tokenize(s, f, nelem(f));
if(n != 2){
free(s);
continue;
}
if(nxtab == a){
a += inc;
xtab = realloc(xtab, a*sizeof *xtab);
if(xtab == nil)
sysfatal("realloc: %r");
inc *= 2;
}
for(x = xtab+nxtab; x > xtab && strcmp(x[-1].a, f[0]) > 0; x--)
x[0] = x[-1];
x->a = f[0];
x->b = f[1];
nxtab++;
}
}
char*
frombox(char *from)
{
char *s;
int n, m, fd;
Xtab *t, *p;
static int once;
if(once == 0){
once = 1;
s = foldername(mbpath, user, "fromtab-");
fd = open(s, OREAD);
if(fd != -1)
loadxfrom(fd);
close(fd);
}
t = xtab;
n = nxtab;
while(n > 1) {
m = n/2;
p = t + m;
if(strcmp(from, p->a) > 0){
t = p;
n = n - m;
} else
n = m;
}
if(n && strcmp(from, t->a) == 0)
return t->b;
return from;
}
Message*
fcmd(Cmd*, Message *m)
{
char *f;
f = frombox(m->from);
if(appendtofile(m, "rawunix", f, 1, 1) < 0)
return nil;
return m;
}
Message*
fqcmd(Cmd*, Message *m)
{
char *f;
f = frombox(m->from);
Bprint(&out, "! %s\n", f);
return m;
}
void
system(char *cmd, char **av, int in)
{
switch(fork()){
case -1:
return;
case 0:
if(in >= 0){
close(0);
dup(in, 0);
close(in);
}
if(wd[0] != 0)
chdir(wd);
exec(cmd, av);
eprint("!couldn't exec %s\n", cmd);
exits(0);
default:
if(in >= 0)
close(in);
while(waitpid() < 0){
if(!interrupted)
break;
interrupted = 0;
continue;
}
break;
}
}
Message*
bangcmd(Cmd *c, Message *m)
{
char *av[4];
av[0] = "rc";
av[1] = "-c";
av[2] = c->cmdline;
av[3] = 0;
system("/bin/rc", av, -1);
// Bprint(&out, "!\n");
return m;
}
Message*
xpipecmd(Cmd *c, Message *m, char *part)
{
char *av[4];
int fd;
if(c->an < 2){
eprint("!usage: | cmd\n");
return nil;
}
fd = open(extendp(m->path, part), OREAD);
if(fd < 0){
dissappeared();
return nil;
}
av[0] = "rc";
av[1] = "-c";
av[2] = c->cmdline;
av[3] = 0;
system("/bin/rc", av, fd); /* system closes fd */
// Bprint(&out, "!\n");
return m;
}
Message*
pipecmd(Cmd *c, Message *m)
{
return xpipecmd(c, m, "body");
}
Message*
rpipecmd(Cmd *c, Message *m)
{
return xpipecmd(c, m, "rawunix");
}
void
closemb(void)
{
int fd;
fd = open("/mail/fs/ctl", ORDWR);
if(fd < 0)
sysfatal("can't open /mail/fs/ctl: %r");
/* close current mailbox */
if(*mbname && strcmp(mbname, "mbox") != 0)
if(fprint(fd, "close %q", mbname) == -1)
eprint("!close %q: %r", mbname);
close(fd);
}
static char*
chop(char *s, int c)
{
char *p;
p = strrchr(s, c);
if(p != nil && p > s) {
*p = 0;
return p - 1;
}
return 0;
}
/* sometimes opens the file (or open mbox) intended. */
int
switchmb(char *mb, int singleton)
{
char *p, *e, pbuf[Pathlen], buf[Pathlen], file[Pathlen];
int fd, abs;
closemb();
abs = 0;
if(mb == nil)
mb = "mbox";
if(strcmp(mb, ".") == 0) /* botch */
mb = homewd;
if(*mb == '/' || strncmp(mb, "./", 2) == 0 || strncmp(mb, "../", 3) == 0){
snprint(file, sizeof file, "%s", mb);
abs = 1;
}else
snprint(file, sizeof file, "/mail/fs/%s", mb);
if(singleton){
if(chop(file, '/') == nil || (p = strrchr(file, '/')) == nil || p - file < 2){
eprint("!bad mbox name\n");
return -1;
}
mboxpathbuf(pbuf, sizeof pbuf, user, "mbox");
snprint(mbname, sizeof mbname, "%s", p + 1);
}else if(abs || access(file, 0) < 0){
fd = open("/mail/fs/ctl", ORDWR);
if(fd < 0)
sysfatal("can't open /mail/fs/ctl: %r");
p = pbuf;
e = pbuf + sizeof pbuf;
if(abs && *file != '/')
seprint(p, e, "%s/%s", getwd(buf, sizeof buf), mb);
else if(abs)
seprint(p, e, "%s", mb);
else
mboxpathbuf(pbuf, sizeof pbuf, user, mb);
/* make up a handle to use when talking to fs */
if((p = strrchr(mb, '/')) == nil)
p = mb - 1;
snprint(mbname, sizeof mbname, "%s%ld", p + 1, time(0));
if(fprint(fd, "open %q %q", pbuf, mbname) < 0){
eprint("!can't open %q %q: %r\n", pbuf, mbname);
return -1;
}
close(fd);
didopen = 1;
}else{
mboxpathbuf(pbuf, sizeof pbuf, user, mb);
strcpy(mbname, mb);
}
snprint(root, sizeof root, "/mail/fs/%s", mbname);
if(getwd(wd, sizeof wd) == nil)
wd[0] = 0;
if(!singleton && chdir(root) >= 0)
strcpy(root, ".");
rootlen = strlen(root);
snprint(mbpath, sizeof mbpath, "%s", pbuf);
memset(&mbqid, 0, sizeof mbqid);
mbvers++;
return 0;
}
char*
rooted(char *s)
{
static char buf[Pathlen];
if(strcmp(root, ".") != 0)
return s;
snprint(buf, sizeof buf, "/mail/fs/%s/%s", mbname, s);
return buf;
}
int
plumb(Message *m, Ctype *cp)
{
char *s;
Plumbmsg *pm;
static int fd = -2;
if(cp->plumbdest == nil)
return -1;
if(fd < -1)
fd = plumbopen("send", OWRITE);
if(fd < 0)
return -1;
pm = mallocz(sizeof *pm, 1);
pm->src = strdup("mail");
if(*cp->plumbdest)
pm->dst = strdup(cp->plumbdest);
pm->type = strdup("text");
pm->ndata = -1;
s = rooted(extendp(m->path, "body"));
if(cp->ext != nil)
pm->data = smprint("%s.%s", s, cp->ext);
else
pm->data = strdup(s);
plumbsend(fd, pm);
plumbfree(pm);
return 0;
}
void
regerror(char*)
{
}
void
exitfs(char *rv)
{
if(startedfs)
unmount(nil, "/mail/fs");
chdir(homewd); /* prof */
exits(rv);
}