--- /dev/null
+/*
+ * $Id$
+ *
+ * This program attempts to act like a local MDA if you're using sendmail or
+ * some other non-Citadel MTA. It basically just contacts the Citadel LMTP
+ * listener on a unix domain socket and transmits the message.
+ *
+ * Copyright (c) 1987-2009 by the citadel.org team
+ *
+ * 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 3 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
+ */
+
+#include "sysdep.h"
+#include <stdlib.h>
+#include <unistd.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <netdb.h>
+#include <string.h>
+#include <pwd.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <limits.h>
+#include <libcitadel.h>
+#include "citadel.h"
+#ifndef HAVE_SNPRINTF
+#include "snprintf.h"
+#endif
+#include "citadel_dirs.h"
+
+int serv_sock;
+int debug = 0;
+
+void strip_trailing_nonprint(char *buf)
+{
+ while ( (!IsEmptyStr(buf)) && (!isprint(buf[strlen(buf) - 1])) )
+ buf[strlen(buf) - 1] = 0;
+}
+
+
+void timeout(int signum)
+{
+ exit(signum);
+}
+
+
+int uds_connectsock(char *sockpath)
+{
+ int s;
+ struct sockaddr_un addr;
+
+ memset(&addr, 0, sizeof(addr));
+ addr.sun_family = AF_UNIX;
+ strncpy(addr.sun_path, sockpath, sizeof addr.sun_path);
+
+ s = socket(AF_UNIX, SOCK_STREAM, 0);
+ if (s < 0) {
+ fprintf(stderr, "citmail: Can't create socket: %s\n",
+ strerror(errno));
+ exit(3);
+ }
+
+ if (connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ fprintf(stderr, "citmail: can't connect: %s\n",
+ strerror(errno));
+ close(s);
+ exit(3);
+ }
+
+ return s;
+}
+
+
+/*
+ * input binary data from socket
+ */
+void serv_read(char *buf, int bytes)
+{
+ int len, rlen;
+
+ len = 0;
+ while (len < bytes) {
+ rlen = read(serv_sock, &buf[len], bytes - len);
+ if (rlen < 1) {
+ return;
+ }
+ len = len + rlen;
+ }
+}
+
+
+/*
+ * send binary to server
+ */
+void serv_write(char *buf, int nbytes)
+{
+ int bytes_written = 0;
+ int retval;
+ while (bytes_written < nbytes) {
+ retval = write(serv_sock, &buf[bytes_written],
+ nbytes - bytes_written);
+ if (retval < 1) {
+ return;
+ }
+ bytes_written = bytes_written + retval;
+ }
+}
+
+
+
+/*
+ * input string from socket - implemented in terms of serv_read()
+ */
+void serv_gets(char *buf)
+{
+ int i;
+
+ /* Read one character at a time.
+ */
+ for (i = 0;; i++) {
+ serv_read(&buf[i], 1);
+ if (buf[i] == '\n' || i == (SIZ-1))
+ break;
+ }
+
+ /* If we got a long line, discard characters until the newline.
+ */
+ if (i == (SIZ-1))
+ while (buf[i] != '\n')
+ serv_read(&buf[i], 1);
+
+ /* Strip all trailing nonprintables (crlf)
+ */
+ buf[i] = 0;
+ strip_trailing_nonprint(buf);
+ if (debug) fprintf(stderr, "> %s\n", buf);
+}
+
+
+/*
+ * send line to server - implemented in terms of serv_write()
+ */
+void serv_puts(char *buf)
+{
+ if (debug) fprintf(stderr, "< %s\n", buf);
+ serv_write(buf, strlen(buf));
+ serv_write("\n", 1);
+}
+
+
+
+void cleanup(int exitcode) {
+ char buf[1024];
+
+ if (exitcode != 0) {
+ fprintf(stderr, "citmail: error #%d occurred while sending mail.\n", exitcode);
+ fprintf(stderr, "Please check your Citadel configuration.\n");
+ }
+ serv_puts("QUIT");
+ serv_gets(buf);
+ exit(exitcode);
+}
+
+
+
+int main(int argc, char **argv) {
+ char buf[1024];
+ char fromline[1024];
+ FILE *fp;
+ int i;
+ struct passwd *pw;
+ int from_header = 0;
+ int in_body = 0;
+ int relh=0;
+ int home=0;
+ char relhome[PATH_MAX]="";
+ char ctdldir[PATH_MAX]=CTDLDIR;
+ char *sp, *ep;
+ char hostname[256];
+ char **recipients = NULL;
+ int num_recipients = 0;
+ int to_or_cc = 0;
+ int read_recipients_from_headers = 0;
+ char *add_these_recipients = NULL;
+
+ for (i=1; i<argc; ++i) {
+ if (!strcmp(argv[i], "-d")) {
+ debug = 1;
+ }
+ else if (!strcmp(argv[i], "-t")) {
+ read_recipients_from_headers = 1;
+ }
+ else if (argv[i][0] != '-') {
+ ++num_recipients;
+ recipients = realloc(recipients, (num_recipients * sizeof (char *)));
+ recipients[num_recipients - 1] = strdup(argv[i]);
+ }
+ }
+
+ /* TODO: should we be able to calculate relative dirs? */
+ calc_dirs_n_files(relh, home, relhome, ctdldir, 0);
+
+ pw = getpwuid(getuid());
+
+ fp = tmpfile();
+ if (fp == NULL) return(errno);
+ serv_sock = uds_connectsock(file_lmtp_socket); /* FIXME: if called as 'sendmail' connect to file_lmtp_unfiltered_socket */
+ serv_gets(buf);
+ if (buf[0] != '2') {
+ fprintf(stderr, "%s\n", &buf[4]);
+ if (debug) fprintf(stderr, "citmail: could not connect to LMTP socket.\n");
+ cleanup(1);
+ }
+
+ sp = strchr (buf, ' ');
+ if (sp == NULL) {
+ if (debug) fprintf(stderr, "citmail: ould not calculate hostname.\n");
+ cleanup(2);
+ }
+ sp ++;
+ ep = strchr (sp, ' ');
+ if (ep == NULL) cleanup(3);
+ *ep = '\0';
+ strncpy(hostname, sp, sizeof hostname);
+
+ snprintf(fromline, sizeof fromline, "From: %s@%s", pw->pw_name, hostname);
+ while (fgets(buf, 1024, stdin) != NULL) {
+ if ( ( (buf[0] == 13) || (buf[0] == 10)) && (in_body == 0) ) {
+ in_body = 1;
+ if (from_header == 0) {
+ fprintf(fp, "%s%s", fromline, buf);
+ }
+ }
+ if (in_body == 0 && !strncasecmp(buf, "From:", 5)) {
+ strcpy(fromline, buf);
+ from_header = 1;
+ }
+
+ if (read_recipients_from_headers) {
+ add_these_recipients = NULL;
+ if ((isspace(buf[0])) && (to_or_cc)) {
+ add_these_recipients = buf;
+ }
+ else {
+ if ((!strncasecmp(buf, "To:", 3)) || (!strncasecmp(buf, "Cc:", 3))) {
+ to_or_cc = 1;
+ }
+ else {
+ to_or_cc = 0;
+ }
+ if (to_or_cc) {
+ add_these_recipients = &buf[3];
+ }
+ }
+
+ if (add_these_recipients) {
+ int num_recp_on_this_line;
+ char this_recp[256];
+
+ num_recp_on_this_line = num_tokens(add_these_recipients, ',');
+ for (i=0; i<num_recp_on_this_line; ++i) {
+ extract_token(this_recp, add_these_recipients,
+ i, ',', sizeof this_recp);
+ striplt(this_recp);
+ if (!IsEmptyStr(this_recp)) {
+ ++num_recipients;
+ recipients = realloc(recipients,
+ (num_recipients * sizeof (char *)));
+ recipients[num_recipients - 1] = strdup(this_recp);
+ }
+ }
+ }
+ }
+
+ fprintf(fp, "%s", buf);
+ }
+ strip_trailing_nonprint(fromline);
+
+ sprintf(buf, "LHLO %s", hostname);
+ serv_puts(buf);
+ do {
+ serv_gets(buf);
+ strcat(buf, " ");
+ } while (buf[3] == '-');
+ if (buf[0] != '2') cleanup(4);
+
+ snprintf(buf, sizeof buf, "MAIL %s", fromline);
+ serv_puts(buf);
+ serv_gets(buf);
+ if (buf[0] != '2') cleanup(5);
+
+ for (i=0; i<num_recipients; ++i) {
+ snprintf(buf, sizeof buf, "RCPT To: %s", recipients[i]);
+ serv_puts(buf);
+ serv_gets(buf);
+ free(recipients[i]);
+ }
+ free(recipients);
+
+ serv_puts("DATA");
+ serv_gets(buf);
+ if (buf[0]!='3') cleanup(6);
+
+ rewind(fp);
+ while (fgets(buf, sizeof buf, fp) != NULL) {
+ strip_trailing_nonprint(buf);
+ serv_puts(buf);
+ }
+ serv_puts(".");
+ serv_gets(buf);
+ if (buf[0] != '2') {
+ fprintf(stderr, "%s\n", &buf[4]);
+ cleanup(7);
+ }
+ else {
+ cleanup(0);
+ }
+
+ /* We won't actually reach this statement but the compiler will
+ * display a spurious warning about an invalid return type if
+ * we don't return an int.
+ */
+ return(0);
+}
projects / citadel.git / blobdiff