-/*
- *
- * Completely reworked version of "citmail"
- * This program attempts to act like a local MDA if you're using sendmail or
- * some other non-Citadel MTA. It basically just forwards the message to
- * the Citadel SMTP listener on some non-standard port.
- *
- * $Id$
- *
- */
+// 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. Really though,
+// if your MTA supports LMTP then you definitely should be using that instead.
+//
+// Copyright (c) 1987-2021 by the citadel.org team
+//
+// This program is open source software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License version 3.
+//
+// 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.
#include "sysdep.h"
#include <stdlib.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.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_decls.h"
-#include "ipc.h"
-#ifndef HAVE_SNPRINTF
-#include "snprintf.h"
-#endif
-
-#ifndef INADDR_NONE
-#define INADDR_NONE 0xffffffff
-#endif
+#include "citadel_dirs.h"
int serv_sock;
+int debug = 0;
-
-void strip_trailing_nonprint(char *buf)
-{
- while ( (strlen(buf)>0) && (!isprint(buf[strlen(buf) - 1])) )
+void strip_trailing_nonprint(char *buf) {
+ while ( (!IsEmptyStr(buf)) && (!isprint(buf[strlen(buf) - 1])) ) {
buf[strlen(buf) - 1] = 0;
+ }
}
-
-
-
-
-void timeout(int signum)
-{
+void timeout(int signum) {
exit(signum);
}
-int connectsock(char *host, char *service, char *protocol)
-{
- struct hostent *phe;
- struct servent *pse;
- struct protoent *ppe;
- struct sockaddr_in sin;
- int s, type;
- struct sockaddr_un sun;
-
- if ( (!strcmp(protocol, "unix")) || (atoi(service)<0) ) {
- memset(&sun, 0, sizeof(sun));
- sun.sun_family = AF_UNIX;
- sprintf(sun.sun_path, USOCKPATH, 0-atoi(service) );
-
- s = socket(AF_UNIX, SOCK_STREAM, 0);
- if (s < 0) {
- fprintf(stderr, "Can't create socket: %s\n",
- strerror(errno));
- exit(3);
- }
-
- if (connect(s, (struct sockaddr *) &sun, sizeof(sun)) < 0) {
- fprintf(stderr, "can't connect: %s\n",
- strerror(errno));
- exit(3);
- }
-
- return s;
- }
-
-
- /* otherwise it's a network connection */
+int uds_connectsock(char *sockpath) {
+ int s;
+ struct sockaddr_un addr;
- memset(&sin, 0, sizeof(sin));
- sin.sin_family = AF_INET;
+ memset(&addr, 0, sizeof(addr));
+ addr.sun_family = AF_UNIX;
+ strcpy(addr.sun_path, sockpath);
- pse = getservbyname(service, protocol);
- if (pse) {
- sin.sin_port = pse->s_port;
- } else if ((sin.sin_port = htons((u_short) atoi(service))) == 0) {
- fprintf(stderr, "Can't get %s service entry: %s\n",
- service, strerror(errno));
- exit(3);
- }
- phe = gethostbyname(host);
- if (phe) {
- memcpy(&sin.sin_addr, phe->h_addr, phe->h_length);
- } else if ((sin.sin_addr.s_addr = inet_addr(host)) == INADDR_NONE) {
- fprintf(stderr, "Can't get %s host entry: %s\n",
- host, strerror(errno));
- exit(3);
- }
- if ((ppe = getprotobyname(protocol)) == 0) {
- fprintf(stderr, "Can't get %s protocol entry: %s\n",
- protocol, strerror(errno));
- exit(3);
- }
- if (!strcmp(protocol, "udp")) {
- type = SOCK_DGRAM;
- } else {
- type = SOCK_STREAM;
- }
-
- s = socket(PF_INET, type, ppe->p_proto);
+ s = socket(AF_UNIX, SOCK_STREAM, 0);
if (s < 0) {
- fprintf(stderr, "Can't create socket: %s\n", strerror(errno));
+ fprintf(stderr, "citmail: Can't create socket: %s\n",
+ strerror(errno));
exit(3);
}
- signal(SIGALRM, timeout);
- alarm(30);
- if (connect(s, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
- fprintf(stderr, "can't connect to %s.%s: %s\n",
- host, service, strerror(errno));
+ if (connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ fprintf(stderr, "citmail: can't connect: %s\n",
+ strerror(errno));
+ close(s);
exit(3);
}
- alarm(0);
- signal(SIGALRM, SIG_IGN);
- return (s);
+ return s;
}
-/*
- * convert service and host entries into a six-byte numeric in the format
- * expected by a SOCKS v4 server
- */
-void numericize(char *buf, char *host, char *service, char *protocol)
-{
- struct hostent *phe;
- struct servent *pse;
- struct sockaddr_in sin;
-
- memset(&sin, 0, sizeof(sin));
- sin.sin_family = AF_INET;
-
- pse = getservbyname(service, protocol);
- if (pse) {
- sin.sin_port = pse->s_port;
- } else if ((sin.sin_port = htons((u_short) atoi(service))) == 0) {
- fprintf(stderr, "Can't get %s service entry: %s\n",
- service, strerror(errno));
- exit(3);
- }
- buf[1] = (((sin.sin_port) & 0xFF00) >> 8);
- buf[0] = ((sin.sin_port) & 0x00FF);
-
- phe = gethostbyname(host);
- if (phe) {
- memcpy(&sin.sin_addr, phe->h_addr, phe->h_length);
- } else if ((sin.sin_addr.s_addr = inet_addr(host)) == INADDR_NONE) {
- fprintf(stderr, "Can't get %s host entry: %s\n",
- host, strerror(errno));
- exit(3);
- }
- buf[5] = ((sin.sin_addr.s_addr) & 0xFF000000) >> 24;
- buf[4] = ((sin.sin_addr.s_addr) & 0x00FF0000) >> 16;
- buf[3] = ((sin.sin_addr.s_addr) & 0x0000FF00) >> 8;
- buf[2] = ((sin.sin_addr.s_addr) & 0x000000FF);
-}
/*
* input binary data from socket
*/
for (i = 0;; i++) {
serv_read(&buf[i], 1);
- if (buf[i] == '\n' || i == 255)
+ if (buf[i] == '\n' || i == (SIZ-1))
break;
}
/* If we got a long line, discard characters until the newline.
*/
- if (i == 255)
+ if (i == (SIZ-1))
while (buf[i] != '\n')
serv_read(&buf[i], 1);
*/
buf[i] = 0;
strip_trailing_nonprint(buf);
+ if (debug) fprintf(stderr, "> %s\n", buf);
}
*/
void serv_puts(char *buf)
{
- /* printf("< %s\n", 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);
- fprintf(stderr, "%s\n", buf);
exit(exitcode);
}
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);
- sprintf(fromline, "From: someone@somewhere.org");
+ 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);
- if (!strncasecmp(buf, "From:", 5)) strcpy(fromline, buf);
}
strip_trailing_nonprint(fromline);
- sprintf(buf, "%d", SMTP_PORT);
- serv_sock = connectsock("localhost", buf, "tcp");
- serv_gets(buf);
- fprintf(stderr, "%s\n", buf);
- if (buf[0]!='2') cleanup(1);
-
- serv_puts("HELO localhost");
- serv_gets(buf);
- fprintf(stderr, "%s\n", buf);
- if (buf[0]!='2') cleanup(1);
-
- sprintf(buf, "MAIL %s", fromline);
+ sprintf(buf, "LHLO %s", hostname);
serv_puts(buf);
- serv_gets(buf);
- fprintf(stderr, "%s\n", buf);
- if (buf[0]!='2') cleanup(1);
+ do {
+ serv_gets(buf);
+ strcat(buf, " ");
+ } while (buf[3] == '-');
+ if (buf[0] != '2') {
+ if (debug) fprintf(stderr, "citmail: LHLO command failed\n");
+ cleanup(4);
+ }
- sprintf(buf, "RCPT To: %s", argv[1]);
+ snprintf(buf, sizeof buf, "MAIL %s", fromline);
serv_puts(buf);
serv_gets(buf);
- fprintf(stderr, "%s\n", buf);
- if (buf[0]!='2') cleanup(1);
+ 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);
- fprintf(stderr, "%s\n", buf);
- if (buf[0]!='3') cleanup(1);
+ if (buf[0]!='3') {
+ if (debug) fprintf(stderr, "citmail: DATA command failed\n");
+ cleanup(6);
+ }
rewind(fp);
while (fgets(buf, sizeof buf, fp) != NULL) {
}
serv_puts(".");
serv_gets(buf);
- fprintf(stderr, "%s\n", buf);
- if (buf[0]!='2') cleanup(1);
- else cleanup(0);
+ 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