+++ /dev/null
-// 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. Really though,
-// if your MTA supports LMTP then you definitely should be using that instead.
-//
-// Copyright (c) 1987-2022 by the citadel.org team
-//
-// This program is open source software. Use, duplication, or disclosure
-// is subject to the terms of the GNU General Public License, version 3.
-// The program is distributed without any warranty, expressed or implied.
-
-#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"
-#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;
- strcpy(addr.sun_path, sockpath);
-
- 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;
- 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 (!strncmp(argv[i], "-h", 2)) {
- safestrncpy(ctdldir, &argv[i][2], sizeof ctdldir);
- }
- else if (argv[i][0] != '-') {
- ++num_recipients;
- recipients = realloc(recipients, (num_recipients * sizeof (char *)));
- recipients[num_recipients - 1] = strdup(argv[i]);
- }
- }
-
- if (chdir(ctdldir) != 0) {
- fprintf(stderr, "sendcommand: %s: %s\n", ctdldir, strerror(errno));
- exit(errno);
- }
-
- pw = getpwuid(getuid());
-
- fp = tmpfile();
- if (fp == NULL) return(errno);
- serv_sock = uds_connectsock(file_lmtp_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: could not calculate hostname.\n");
- cleanup(2);
- }
- sp ++;
- ep = strchr (sp, ' ');
- if (ep == NULL) {
- if (debug) fprintf(stderr, "citmail: error parsing hostname\n");
- cleanup(3);
- }
- else
- *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') {
- if (debug) fprintf(stderr, "citmail: LHLO command failed\n");
- cleanup(4);
- }
-
- snprintf(buf, sizeof buf, "MAIL %s", fromline);
- serv_puts(buf);
- serv_gets(buf);
- if (buf[0] != '2') {
- if (debug) fprintf(stderr, "citmail: MAIL command failed\n");
- 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') {
- if (debug) fprintf(stderr, "citmail: DATA command failed\n");
- 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