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-rw-r--r--camel/camel-movemail.c503
1 files changed, 0 insertions, 503 deletions
diff --git a/camel/camel-movemail.c b/camel/camel-movemail.c
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--- a/camel/camel-movemail.c
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-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/* camel-movemail.c: mbox copying function */
-
-/*
- * Author:
- * Dan Winship <danw@helixcode.com>
- *
- * Copyright 2000 Helix Code, Inc. (http://www.helixcode.com)
- *
- * This program 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.
- *
- * This program 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 this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <sys/stat.h>
-#include <sys/uio.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <time.h>
-#include <unistd.h>
-#include <string.h>
-#include <signal.h>
-#ifdef HAVE_ALLOCA_H
-#include <alloca.h>
-#endif
-
-#include "camel-movemail.h"
-#include "camel-exception.h"
-
-#include "camel-mime-parser.h"
-#include "camel-mime-filter.h"
-#include "camel-mime-filter-from.h"
-
-#include "camel-lock-client.h"
-
-#define d(x)
-
-#ifdef MOVEMAIL_PATH
-#include <sys/wait.h>
-
-static void movemail_external (const char *source, const char *dest,
- CamelException *ex);
-#endif
-
-/* these could probably be exposed as a utility? (but only mbox needs it) */
-#if 0
-static int camel_movemail_copy_filter(int fromfd, int tofd, off_t start, size_t bytes, CamelMimeFilter *filter);
-static int camel_movemail_copy(int fromfd, int tofd, off_t start, size_t bytes);
-#endif
-
-/**
- * camel_movemail: Copy an mbox file from a shared spool directory to a
- * new folder in a Camel store
- * @source: source file
- * @dest: destination file
- * @ex: a CamelException
- *
- * This copies an mbox file from a shared directory with multiple
- * readers and writers into a private (presumably Camel-controlled)
- * directory. Dot locking is used on the source file (but not the
- * destination).
- *
- * Return Value: Returns -1 on error.
- **/
-int
-camel_movemail(const char *source, const char *dest, CamelException *ex)
-{
- int lockid = -1;
- int res = -1;
- int sfd, dfd;
- struct stat st;
- int nread, nwrote;
- char buf[BUFSIZ];
-
- camel_exception_clear(ex);
-
- /* Stat and then open the spool file. If it doesn't exist or
- * is empty, the user has no mail. (There's technically a race
- * condition here in that an MDA might have just now locked it
- * to deliver a message, but we don't care. In that case,
- * assuming it's unlocked is equivalent to pretending we were
- * called a fraction earlier.)
- */
- if (stat (source, &st) == -1) {
- if (errno != ENOENT) {
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Could not check mail file "
- "%s: %s"), source,
- g_strerror (errno));
- }
- return -1;
- }
-
- if (st.st_size == 0)
- return 0;
-
- /* open files */
- sfd = open (source, O_RDWR);
- if (sfd == -1) {
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Could not open mail file %s: %s"),
- source, g_strerror (errno));
- return -1;
- }
-
- dfd = open (dest, O_WRONLY | O_CREAT | O_APPEND, S_IRUSR | S_IWUSR);
- if (dfd == -1) {
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Could not open temporary mail "
- "file %s: %s"), dest,
- g_strerror (errno));
- close (sfd);
- return -1;
- }
-
- /* lock our source mailbox */
- lockid = camel_lock_helper_lock(source, ex);
- if (lockid == -1) {
- close(sfd);
- close(dfd);
- return -1;
- }
-
- while (1) {
- int written = 0;
-
- nread = read (sfd, buf, sizeof (buf));
- if (nread == 0)
- break;
- else if (nread == -1) {
- if (errno == EINTR)
- continue;
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Error reading mail file: %s"),
- g_strerror (errno));
- break;
- }
-
- while (nread) {
- nwrote = write (dfd, buf + written, nread);
- if (nwrote == -1) {
- if (errno == EINTR)
- continue; /* continues inner loop */
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Error writing "
- "mail temp file: %s"),
- g_strerror (errno));
- break;
- }
- written += nwrote;
- nread -= nwrote;
- }
- }
-
- /* If no errors occurred copying the data, and we successfully
- * close the destination file, then truncate the source file.
- */
- if (!camel_exception_is_set (ex)) {
- if (close (dfd) == 0) {
- ftruncate (sfd, 0);
- res = 0;
- } else {
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Failed to store mail in "
- "temp file %s: %s"), dest,
- g_strerror (errno));
- }
- } else
- close (dfd);
- close (sfd);
-
- camel_lock_helper_unlock(lockid);
-
- return res;
-}
-
-#ifdef MOVEMAIL_PATH
-static void
-movemail_external (const char *source, const char *dest, CamelException *ex)
-{
- sigset_t mask, omask;
- pid_t pid;
- int fd[2], len = 0, nread, status;
- char buf[BUFSIZ], *output = NULL;
-
- /* Block SIGCHLD so the app can't mess us up. */
- sigemptyset (&mask);
- sigaddset (&mask, SIGCHLD);
- sigprocmask (SIG_BLOCK, &mask, &omask);
-
- if (pipe (fd) == -1) {
- sigprocmask (SIG_SETMASK, &omask, NULL);
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Could not create pipe: %s"),
- g_strerror (errno));
- return;
- }
-
- pid = fork ();
- switch (pid) {
- case -1:
- close (fd[0]);
- close (fd[1]);
- sigprocmask (SIG_SETMASK, &omask, NULL);
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Could not fork: %s"),
- g_strerror (errno));
- return;
-
- case 0:
- /* Child */
- close (fd[0]);
- close (STDIN_FILENO);
- dup2 (fd[1], STDOUT_FILENO);
- dup2 (fd[1], STDERR_FILENO);
-
- execl (MOVEMAIL_PATH, MOVEMAIL_PATH, source, dest, NULL);
- _exit (255);
- break;
-
- default:
- break;
- }
-
- /* Parent */
- close (fd[1]);
-
- /* Read movemail's output. */
- while ((nread = read (fd[0], buf, sizeof (buf))) > 0) {
- output = g_realloc (output, len + nread + 1);
- memcpy (output + len, buf, nread);
- len += nread;
- output[len] = '\0';
- }
- close (fd[0]);
-
- /* Now get the exit status. */
- while (waitpid (pid, &status, 0) == -1 && errno == EINTR)
- ;
- sigprocmask (SIG_SETMASK, &omask, NULL);
-
- if (!WIFEXITED (status) || WEXITSTATUS (status) != 0) {
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Movemail program failed: %s"),
- output ? output : _("(Unknown error)"));
- }
- g_free (output);
-}
-#endif
-
-
-#if 0
-static int
-camel_movemail_copy(int fromfd, int tofd, off_t start, size_t bytes)
-{
- char buffer[4096];
- int written = 0;
-
- d(printf("writing %d bytes ... ", bytes));
-
- if (lseek(fromfd, start, SEEK_SET) != start)
- return -1;
-
- while (bytes>0) {
- int toread, towrite;
-
- toread = bytes;
- if (bytes>4096)
- toread = 4096;
- else
- toread = bytes;
- do {
- towrite = read(fromfd, buffer, toread);
- } while (towrite == -1 && errno == EINTR);
-
- if (towrite == -1)
- return -1;
-
- /* check for 'end of file' */
- if (towrite == 0) {
- d(printf("end of file?\n"));
- break;
- }
-
- do {
- toread = write(tofd, buffer, towrite);
- } while (toread == -1 && errno == EINTR);
-
- if (toread == -1)
- return -1;
-
- written += toread;
- bytes -= toread;
- }
-
- d(printf("written %d bytes\n", written));
-
- return written;
-}
-#endif
-
-#define PRE_SIZE (32)
-
-#if 0
-static int
-camel_movemail_copy_filter(int fromfd, int tofd, off_t start, size_t bytes, CamelMimeFilter *filter)
-{
- char buffer[4096+PRE_SIZE];
- int written = 0;
- char *filterbuffer;
- int filterlen, filterpre;
-
- d(printf("writing %d bytes ... ", bytes));
-
- camel_mime_filter_reset(filter);
-
- if (lseek(fromfd, start, SEEK_SET) != start)
- return -1;
-
- while (bytes>0) {
- int toread, towrite;
-
- toread = bytes;
- if (bytes>4096)
- toread = 4096;
- else
- toread = bytes;
- do {
- towrite = read(fromfd, buffer+PRE_SIZE, toread);
- } while (towrite == -1 && errno == EINTR);
-
- if (towrite == -1)
- return -1;
-
- /* check for 'end of file' */
- if (towrite == 0) {
- d(printf("end of file?\n"));
- camel_mime_filter_complete(filter, buffer+PRE_SIZE, towrite, PRE_SIZE,
- &filterbuffer, &filterlen, &filterpre);
- towrite = filterlen;
- if (towrite == 0)
- break;
- } else {
- camel_mime_filter_filter(filter, buffer+PRE_SIZE, towrite, PRE_SIZE,
- &filterbuffer, &filterlen, &filterpre);
- towrite = filterlen;
- }
-
- do {
- toread = write(tofd, filterbuffer, towrite);
- } while (toread == -1 && errno == EINTR);
-
- if (toread == -1)
- return -1;
-
- written += toread;
- bytes -= toread;
- }
-
- d(printf("written %d bytes\n", written));
-
- return written;
-}
-
-/* write the headers back out again, but not he Content-Length header, because we dont
- want to maintain it! */
-static int
-solaris_header_write(int fd, struct _header_raw *header)
-{
- struct iovec iv[4];
- int outlen = 0, len;
-
- iv[1].iov_base = ":";
- iv[1].iov_len = 1;
- iv[3].iov_base = "\n";
- iv[3].iov_len = 1;
-
- while (header) {
- if (strcasecmp(header->name, "Content-Length")) {
- iv[0].iov_base = header->name;
- iv[0].iov_len = strlen(header->name);
- iv[2].iov_base = header->value;
- iv[2].iov_len = strlen(header->value);
-
- do {
- len = writev(fd, iv, 4);
- } while (len == -1 && errno == EINTR);
-
- if (len == -1)
- return -1;
- outlen += len;
- }
- header = header->next;
- }
-
- do {
- len = write(fd, "\n", 1);
- } while (len == -1 && errno == EINTR);
-
- if (len == -1)
- return -1;
-
- outlen += 1;
-
- d(printf("Wrote %d bytes of headers\n", outlen));
-
- return outlen;
-}
-
-/* Well, since Solaris is a tad broken wrt its 'mbox' folder format,
- we must convert it to a real mbox format. Thankfully this is
- mostly pretty easy */
-static int
-camel_movemail_solaris (int sfd, int dfd, CamelException *ex)
-{
- CamelMimeParser *mp;
- char *buffer;
- int len;
- CamelMimeFilterFrom *ffrom;
- int ret = 1;
-
- mp = camel_mime_parser_new();
- camel_mime_parser_scan_from(mp, TRUE);
- camel_mime_parser_init_with_fd(mp, sfd);
-
- ffrom = camel_mime_filter_from_new();
-
- while (camel_mime_parser_step(mp, &buffer, &len) == HSCAN_FROM) {
- if (camel_mime_parser_step(mp, &buffer, &len) != HSCAN_FROM_END) {
- const char *cl;
- int length;
- int start, body;
- off_t newpos;
-
- ret = 0;
-
- start = camel_mime_parser_tell_start_from(mp);
- body = camel_mime_parser_tell(mp);
-
- /* write out headers, but NOT content-length header */
- solaris_header_write(dfd, camel_mime_parser_headers_raw(mp));
-
- cl = camel_mime_parser_header(mp, "content-length", NULL);
- if (cl == NULL) {
- g_warning("Required Content-Length header is missing from solaris mail box @ %d", (int)camel_mime_parser_tell(mp));
- camel_mime_parser_drop_step(mp);
- camel_mime_parser_drop_step(mp);
- camel_mime_parser_step(mp, &buffer, &len);
- camel_mime_parser_unstep(mp);
- length = camel_mime_parser_tell_start_from(mp) - body;
- newpos = -1;
- } else {
- length = atoi(cl);
- camel_mime_parser_drop_step(mp);
- camel_mime_parser_drop_step(mp);
- newpos = length+body;
- }
- /* copy body->length converting From lines */
- if (camel_movemail_copy_filter(sfd, dfd, body, length, (CamelMimeFilter *)ffrom) == -1)
- goto fail;
- if (newpos != -1)
- camel_mime_parser_seek(mp, newpos, SEEK_SET);
- } else {
- g_error("Inalid parser state: %d", camel_mime_parser_state(mp));
- }
- }
-
- camel_object_unref((CamelObject *)mp);
- camel_object_unref((CamelObject *)ffrom);
-
- return ret;
-
-fail:
- camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
- _("Error copying "
- "mail temp file: %s"),
- g_strerror (errno));
-
-
- camel_object_unref((CamelObject *)mp);
- camel_object_unref((CamelObject *)ffrom);
-
- return -1;
-}
-#endif
-
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