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/* $Id$ */
/***
This file is part of libnewmail
libnewmail is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
libnewmail is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with libnewmail; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA
***/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <errno.h>
#include "module.h"
#include "newmail.h"
#include "util.h"
struct data {
char *path;
enum nm_query query;
nm_query_cb_t cb;
void *user;
oop_source *oop;
};
static int _query(struct nm_spool *s, enum nm_query query, struct nm_status *status) {
struct data *data = (struct data*) s->data;
status->new = status->cur = -1;
if (query & (NM_QUERY_NCUR|NM_QUERY_NNEW)) {
FILE *f;
struct stat st;
int hdr=1, old=0;
if (!(f = fopen(data->path, "r"))) {
if (errno == ENOENT) {
status->new = status->cur = 0;
return 0;
} else {
nm_error(NM_ERROR_NOFILE|NM_ERROR_SYSTEM, NULL);
return -1;
}
}
if (fstat(fileno(f), &st) < 0) {
nm_error(NM_ERROR_NOFILE|NM_ERROR_SYSTEM, "fstat() failed");
fclose(f);
return -1;
}
if (!S_ISREG(st.st_mode)) {
nm_error(NM_ERROR_NOFILE, "Mailbox not a regular file");
fclose(f);
return -1;
}
status->cur = 0;
while (!feof(f)) {
static char ln[128];
if (!fgets(ln, sizeof(ln), f))
break;
if (strncmp(ln, "From ", 5) == 0) {
hdr = 1;
status->cur++;
} else if (hdr && strcmp(ln, "\n") == 0)
hdr = 0;
else if (hdr && strncmp(ln, "Status: ", 8) == 0) {
old++;
hdr = 0;
}
}
fclose(f);
status->new = status->cur-old;
return 0;
} else if (query & (NM_QUERY_CUR|NM_QUERY_NEW)) {
struct stat st;
if (stat(data->path, &st) < 0) {
if (errno == ENOENT) {
status->cur = status->new = 0;
return 0;
}
nm_error(NM_ERROR_NOFILE|NM_ERROR_SYSTEM, NULL);
return -1;
}
if (!S_ISREG(st.st_mode)) {
nm_error(NM_ERROR_NOFILE, "Mailbox not a regular file");
return -1;
}
status->cur = st.st_size != 0 ? 1 : 0;
status->new = status->cur && (st.st_atime < st.st_mtime) ? 1 : 0;
return 0;
}
return -1;
}
static void * _cb(oop_source *source, struct timeval tv, void *user) {
struct nm_status status;
struct nm_spool *s = (struct nm_spool *) user;
struct data *data = (struct data*) s->data;
if (_query(s, data->query, &status) < 0)
data->cb(s, NULL, data->user);
else
data->cb(s, &status, data->user);
data->cb = NULL;
data->user = NULL;
data->query = 0;
data->oop = NULL;
return OOP_CONTINUE;
}
static int _query_submit(struct nm_spool *s, enum nm_query query, oop_source *oop, nm_query_cb_t cb, void *user) {
struct data *data = (struct data*) s->data;
if (data->cb) {
nm_error(NM_ERROR_ALREADY, NULL);
return -1;
}
data->cb = cb;
data->user = user;
data->query = query;
data->oop = oop;
data->oop->on_time(data->oop, OOP_TIME_NOW, _cb, s);
return 0;
}
static int _configure(struct nm_spool *s) {
return -1;
}
static int _info(struct nm_spool *s, struct nm_info *i) {
struct data *data = (struct data*) s->data;
snprintf(i->text, sizeof(i->text), "Unix mail spool %s", data->path);
i->flags = NM_FLAG_SYNCHRONOUS;
return 0;
}
static void _done(struct nm_spool *s) {
struct data *data = (struct data*) s->data;
if (data) {
if (data->cb && data->oop)
data->oop->cancel_time(data->oop, OOP_TIME_NOW, _cb, s);
nm_free(data->path);
nm_free(data);
}
}
int nm_init(struct nm_spool *s) {
struct data *data;
char *def;
if (!(def = getenv("MAIL"))) {
static char fn[PATH_MAX];
static struct stat st;
def = fn;
snprintf(fn, sizeof(fn), "/var/mail/%s", getenv("USER"));
if (stat(fn, &st) < 0 || !S_ISREG(st.st_mode))
snprintf(fn, sizeof(fn), "/var/spool/mail/%s", getenv("USER"));
}
s->query = _query;
s->query_submit = _query_submit;
s->configure = _configure;
s->info = _info;
s->done = _done;
if (!s->path)
s->path = nm_strdup("@AUTOMATIC@.unix");
data = nm_malloc(sizeof(struct data));
memset(data, 0, sizeof(struct data));
data->path = nm_strdup(nm_specials(nm_config_get(s->config, "Path", def)));
s->data = (void*) data;
return 0;
}
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