2 * smtp.c -- nmh SMTP interface
6 * This code is Copyright (c) 2002, by the authors of nmh. See the
7 * COPYRIGHT file in the root directory of the nmh distribution for
8 * complete copyright information.
15 #include <h/signals.h>
22 #include <sys/socket.h>
23 #include <netinet/in.h>
24 #include <arpa/inet.h>
27 #endif /* CYRUS_SASL */
30 * This module implements an interface to SendMail very similar
31 * to the MMDF mm_(3) routines. The sm_() routines herein talk
32 * SMTP to a sendmail process, mapping SMTP reply codes into
37 * On older 4.2BSD machines without the POSIX function `sigaction',
38 * the alarm handing stuff for time-outs will NOT work due to the way
39 * syscalls get restarted. This is not really crucial, since SendMail
40 * is generally well-behaved in this area.
45 * It appears that some versions of Sendmail will return Code 451
46 * when they don't really want to indicate a failure.
47 * "Code 451 almost always means sendmail has deferred; we don't
48 * really want bomb out at this point since sendmail will rectify
49 * things later." So, if you define SENDMAILBUG, Code 451 is
50 * considered the same as Code 250. Yuck!
57 #define NBITS ((sizeof (int)) * 8)
60 * these codes must all be different!
62 #define SM_OPEN 90 /* Changed from 30 in case of nameserver flakiness */
74 static int sm_addrs = 0;
75 static int sm_alarmed = 0;
76 static int sm_child = NOTOK;
77 static int sm_debug = 0;
78 static int sm_nl = TRUE;
79 static int sm_verbose = 0;
81 static FILE *sm_rfp = NULL;
82 static FILE *sm_wfp = NULL;
85 static int sm_ispool = 0;
86 static char sm_tmpfil[BUFSIZ];
91 * Some globals needed by SASL
94 static sasl_conn_t *conn = NULL; /* SASL connection state */
95 static int sasl_complete = 0; /* Has authentication succeded? */
96 static sasl_ssf_t sasl_ssf; /* Our security strength factor */
97 static char *sasl_pw_context[2]; /* Context to pass into sm_get_pass */
98 static int maxoutbuf; /* Maximum crypto output buffer */
99 static int sm_get_user(void *, int, const char **, unsigned *);
100 static int sm_get_pass(sasl_conn_t *, void *, int, sasl_secret_t **);
102 static sasl_callback_t callbacks[] = {
103 { SASL_CB_USER, sm_get_user, NULL },
104 #define SM_SASL_N_CB_USER 0
105 { SASL_CB_PASS, sm_get_pass, NULL },
106 #define SM_SASL_N_CB_PASS 1
107 { SASL_CB_LIST_END, NULL, NULL },
109 #endif /* CYRUS_SASL */
111 static char *sm_noreply = "No reply text given";
112 static char *sm_moreply = "; ";
114 struct smtp sm_reply; /* global... */
118 static int doingEHLO;
119 char *EHLOkeys[MAXEHLO + 1];
124 static int smtp_init (char *, char *, int, int, int, int, int, int,
126 static int sendmail_init (char *, char *, int, int, int, int, int);
128 static int rclient (char *, char *, char *);
129 static int sm_ierror (char *fmt, ...);
130 static int smtalk (int time, char *fmt, ...);
131 static int sm_wrecord (char *, int);
132 static int sm_wstream (char *, int);
133 static int sm_werror (void);
134 static int smhear (void);
135 static int sm_rrecord (char *, int *);
136 static int sm_rerror (void);
137 static RETSIGTYPE alrmser (int);
138 static char *EHLOset (char *);
142 * smtp.c's own static copy of several nmh library subroutines
144 static char **smail_brkstring (char *, char *, char *);
145 static int smail_brkany (char, char *);
146 char **smail_copyip (char **, char **, int);
151 * Function prototypes needed for SASL
154 static int sm_auth_sasl(char *, char *, char *);
155 #endif /* CYRUS_SASL */
157 /* from mts/generic/client.c */
158 int client (char *, char *, char *, int, char *, int);
161 sm_init (char *client, char *server, int watch, int verbose,
162 int debug, int onex, int queued, int sasl, char *saslmech,
165 if (sm_mts == MTS_SMTP)
166 return smtp_init (client, server, watch, verbose,
167 debug, onex, queued, sasl, saslmech, user);
169 return sendmail_init (client, server, watch, verbose,
170 debug, onex, queued);
174 smtp_init (char *client, char *server, int watch, int verbose,
175 int debug, int onex, int queued, int sasl, char *saslmech,
180 #endif /* CYRUS_SASL */
181 int result, sd1, sd2;
186 sm_verbose = verbose;
194 if (sm_rfp != NULL && sm_wfp != NULL)
197 if (client == NULL || *client == '\0') {
201 client = LocalName(); /* no clientname -> LocalName */
206 if (client == NULL || *client == '\0')
207 client = "localhost";
210 if ((sd1 = rclient (server, "tcp", "smtp")) == NOTOK)
221 if ((sm_wfp = fdopen (sd1, "w")) == NULL) {
224 return sm_ierror ("unable to fdopen");
227 sm_reply.text[sm_reply.length = 0] = NULL;
228 return (sm_reply.code = RP_OK);
232 if ((sd2 = dup (sd1)) == NOTOK) {
234 return sm_ierror ("unable to dup");
237 SIGNAL (SIGALRM, alrmser);
238 SIGNAL (SIGPIPE, SIG_IGN);
240 if ((sm_rfp = fdopen (sd1, "r")) == NULL
241 || (sm_wfp = fdopen (sd2, "w")) == NULL) {
244 sm_rfp = sm_wfp = NULL;
245 return sm_ierror ("unable to fdopen");
263 * Give EHLO or HELO command
265 if (client && *client) {
267 result = smtalk (SM_HELO, "EHLO %s", client);
270 if (result >= 500 && result <= 599)
271 result = smtalk (SM_HELO, "HELO %s", client);
281 * If the user asked for SASL, then check to see if the SMTP server
282 * supports it. Otherwise, error out (because the SMTP server
283 * might have been spoofed; we don't want to just silently not
288 if (! (server_mechs = EHLOset("AUTH"))) {
290 return sm_ierror("SMTP server does not support SASL");
293 if (saslmech && stringdex(saslmech, server_mechs) == -1) {
295 return sm_ierror("Requested SASL mech \"%s\" is not in the "
296 "list of supported mechanisms:\n%s",
297 saslmech, server_mechs);
300 if (sm_auth_sasl(user, saslmech ? saslmech : server_mechs,
306 #endif /* CYRUS_SASL */
309 if (watch && EHLOset ("XVRB"))
310 smtalk (SM_HELO, "VERB on");
311 if (onex && EHLOset ("XONE"))
312 smtalk (SM_HELO, "ONEX");
313 if (queued && EHLOset ("XQUE"))
314 smtalk (SM_HELO, "QUED");
320 sendmail_init (char *client, char *server, int watch, int verbose,
321 int debug, int onex, int queued)
330 sm_verbose = verbose;
332 if (sm_rfp != NULL && sm_wfp != NULL)
335 if (client == NULL || *client == '\0') {
339 client = LocalName(); /* no clientname -> LocalName */
343 if (client == NULL || *client == '\0')
344 client = "localhost";
347 if (pipe (pdi) == NOTOK)
348 return sm_ierror ("no pipes");
349 if (pipe (pdo) == NOTOK) {
352 return sm_ierror ("no pipes");
355 for (i = 0; (sm_child = fork ()) == NOTOK && i < 5; i++)
364 return sm_ierror ("unable to fork");
367 if (pdo[0] != fileno (stdin))
368 dup2 (pdo[0], fileno (stdin));
369 if (pdi[1] != fileno (stdout))
370 dup2 (pdi[1], fileno (stdout));
371 if (pdi[1] != fileno (stderr))
372 dup2 (pdi[1], fileno (stderr));
373 for (i = fileno (stderr) + 1; i < NBITS; i++)
377 vec[vecp++] = r1bindex (sendmail, '/');
380 vec[vecp++] = watch ? "-odi" : queued ? "-odq" : "-odb";
381 vec[vecp++] = "-oem";
386 # endif /* not RAND */
387 #endif /* not ZMAILER */
392 execvp (sendmail, vec);
393 fprintf (stderr, "unable to exec ");
395 _exit (-1); /* NOTREACHED */
398 SIGNAL (SIGALRM, alrmser);
399 SIGNAL (SIGPIPE, SIG_IGN);
403 if ((sm_rfp = fdopen (pdi[0], "r")) == NULL
404 || (sm_wfp = fdopen (pdo[1], "w")) == NULL) {
407 sm_rfp = sm_wfp = NULL;
408 return sm_ierror ("unable to fdopen");
423 if (client && *client) {
425 result = smtalk (SM_HELO, "EHLO %s", client);
428 if (500 <= result && result <= 599)
429 result = smtalk (SM_HELO, "HELO %s", client);
443 smtalk (SM_HELO, "ONEX");
446 smtalk (SM_HELO, "VERB on");
453 # define MAXARGS 1000
457 rclient (char *server, char *protocol, char *service)
460 char response[BUFSIZ];
465 if ((sd = client (server, protocol, service, FALSE, response, sizeof(response))) != NOTOK)
469 if (!server && servers && (cp = strchr(servers, '/'))) {
471 char *arguments[MAXARGS];
473 smail_copyip (smail_brkstring (cp = getcpy (servers), " ", "\n"), arguments, MAXARGS);
475 for (ap = arguments; *ap; ap++)
479 if ((dp = strrchr(*ap, '/')) && *++dp == NULL)
481 snprintf (sm_tmpfil, sizeof(sm_tmpfil), "%s/smtpXXXXXX", *ap);
483 sd = mkstemp (sm_tmpfil);
487 if ((sd = creat (sm_tmpfil, 0600)) != NOTOK) {
500 sm_ierror ("%s", response);
506 #include <sys/socket.h>
507 #include <netinet/in.h>
508 #include <arpa/inet.h>
511 #endif /* CYRUS_SASL */
514 sm_winit (int mode, char *from)
519 if (sm_ispool && !sm_wfp) {
520 strlen (strcpy (sm_reply.text, "unable to create new spool file"));
521 sm_reply.code = NOTOK;
544 switch (smtalk (SM_MAIL, "%s FROM:<%s>", smtpcom, from)) {
561 sm_wadr (char *mbox, char *host, char *path)
563 switch (smtalk (SM_RCPT, host && *host ? "RCPT TO:<%s%s@%s>"
565 path ? path : "", mbox, host)) {
575 #endif /* SENDMAILBUG */
600 switch (smtalk (SM_DATA, "DATA")) {
609 #endif /* SENDMAILBUG */
626 sm_wtxt (char *buffer, int len)
632 result = sm_wstream (buffer, len);
635 return (result == NOTOK ? RP_BHST : RP_OK);
642 if (sm_wstream ((char *) NULL, 0) == NOTOK)
645 switch (smtalk (SM_DOT + 3 * sm_addrs, ".")) {
653 #endif /* SENDMAILBUG */
671 if (sm_mts == MTS_SENDMAIL) {
682 if (sm_rfp == NULL && sm_wfp == NULL)
687 smtalk (SM_QUIT, "QUIT");
691 sm_note.code = sm_reply.code;
692 strncpy (sm_note.text, sm_reply.text, sm_note.length = sm_reply.length);/* fall */
694 if (smtalk (SM_RSET, "RSET") == 250 && type == DONE)
696 if (sm_mts == MTS_SMTP)
697 smtalk (SM_QUIT, "QUIT");
699 kill (sm_child, SIGKILL);
704 sm_reply.code = sm_note.code;
705 strncpy (sm_reply.text, sm_note.text, sm_reply.length = sm_note.length);
722 if (sm_rfp != NULL) {
727 if (sm_wfp != NULL) {
733 if (sm_mts == MTS_SMTP) {
738 #endif /* CYRUS_SASL */
740 status = pidwait (sm_child, OK);
744 sm_rfp = sm_wfp = NULL;
745 return (status ? RP_BHST : RP_OK);
754 int cc, i, j, k, result;
756 char *dp, *bp, *cp, s;
757 char buffer[BUFSIZ], sender[BUFSIZ];
761 k = strlen (file) - sizeof(".bulk");
762 if ((fp = fopen (file, "r")) == NULL) {
765 snprintf (sm_reply.text, sizeof(sm_reply.text),
766 "unable to read %s: ", file);
770 if ((s = strerror (errno)))
771 strncpy (bp, s, sizeof(sm_reply.text) - len);
773 snprintf (bp, sizeof(sm_reply.text) - len, "Error %d", errno);
774 sm_reply.length = strlen (sm_reply.text);
775 sm_reply.code = NOTOK;
779 printf ("reading file %s\n", file);
784 while (fgets (buffer, sizeof(buffer), fp)) {
786 strncpy (sender, buffer + sizeof("MAIL FROM:") - 1, sizeof(sender));
787 if (strcmp (buffer, "DATA\r\n") == 0) {
794 printf ("no DATA...\n");
798 snprintf (buffer, sizeof(buffer), "%s.bad", file);
799 rename (file, buffer);
801 snprintf (buffer, sizeof(buffer), "%*.*sA.bulk", k, k, file);
810 printf ("no %srecipients...\n", j < 1 ? "sender or " : "");
816 if ((cp = malloc ((size_t) (cc = (pos = ftell (fp)) + 1))) == NULL) {
817 sm_reply.length = strlen (strcpy (sm_reply.text, "out of memory"));
819 sm_reply.code = NOTOK;
823 fseek (fp, 0L, SEEK_SET);
824 for (dp = cp, i = 0; i++ < j; dp += strlen (dp))
825 if (fgets (dp, cc - (dp - cp), fp) == NULL) {
826 sm_reply.length = strlen (strcpy (sm_reply.text, "premature eof"));
833 for (dp = cp, i = cc - 1; i > 0; dp += cc, i -= cc)
834 if ((cc = write (fileno (sm_wfp), dp, i)) == NOTOK) {
837 strcpy (sm_reply.text, "error writing to server: ",
838 sizeof(sm_reply.text));
842 if ((s = strerror (errno)))
843 strncpy (bp, s, sizeof(sm_reply.text) - len);
845 snprintf (bp, sizeof(sm_reply.text) - len,
846 "unknown error %d", errno);
847 sm_reply.length = strlen (sm_reply.text);
852 printf ("wrote %d octets to server\n", cc);
856 for (dp = cp, i = 0; i++ < j; dp = strchr(dp, '\n'), dp++) {
858 if (bp = strchr(dp, '\r'))
860 printf ("=> %s\n", dp);
866 switch (smhear () + (i == 1 ? 1000 : i != j ? 2000 : 3000)) {
878 smtalk (SM_RSET, "RSET");
906 if (k <= 0 || strcmp (sender, "<>\r\n") == 0)
910 snprintf (buffer, sizeof(buffer), "%*.*sA.bulk", k, k, file);
911 if ((gp = fopen (buffer, "w+")) == NULL)
913 fprintf (gp, "MAIL FROM:<>\r\nRCPT TO:%sDATA\r\n", sender);
916 "To: %*.*s\r\nSubject: Invalid addresses (%s)\r\n",
917 l - 4, l - 4, sender + 1, file);
918 fprintf (gp, "Date: %s\r\nFrom: Postmaster@%s\r\n\r\n",
919 dtimenow (0), LocalName ());
921 if (bp = strchr(dp, '\r'))
923 fprintf (gp, "=> %s\r\n", dp);
926 fprintf (gp, "<= %s\r\n", rp_string (result));
944 smtalk (SM_RSET, "RSET");
947 snprintf (buffer, sizeof(buffer), "%*.*sA.bulk", k, k, file);
958 smtalk (SM_RSET, "RSET");
970 #ifdef HAVE_ST_BLKSIZE
973 if (fstat (fileno (sm_wfp), &st) == NOTOK || (cc = st.st_blksize) < BUFSIZ)
978 if ((cp = malloc ((size_t) cc)) == NULL) {
979 smtalk (SM_RSET, "RSET");
980 sm_reply.length = strlen (strcpy (sm_reply.text, "out of memory"));
985 fseek (fp, pos, SEEK_SET);
989 for (dp = cp, i = cc; i > 0; dp += j, i -= j)
990 if ((j = fread (cp, sizeof(*cp), i, fp)) == OK) {
994 snprintf (sm_reply.text, sizeof(sm_reply.text),
995 "error reading %s: ", file);
999 if ((s = strerror (errno)))
1000 strncpy (bp, s, sizeof(sm_reply.text) - len);
1002 snprintf (bp, sizeof(sm_reply.text) - len,
1003 "unknown error %d", errno);
1004 sm_reply.length = strlen (sm_reply.text);
1012 for (dp = cp, i = cc; i > 0; dp += j, i -= j)
1013 if ((j = write (fileno (sm_wfp), dp, i)) == NOTOK)
1017 printf ("wrote %d octets to server\n", j);
1026 switch (smhear ()) {
1044 snprintf (buffer, sizeof(buffer), "%*.*sA.bulk", k, k, file);
1055 if (k <= 0 || strcmp (sender, "<>\r\n") == 0) {
1061 ftruncate (fileno (gp), 0L);
1062 fseek (gp, 0L, SEEK_SET);
1065 snprintf (buffer, sizeof(buffer), "%*.*sA.bulk", k, k, file);
1066 if ((gp = fopen (buffer, "w")) == NULL)
1069 fprintf (gp, "MAIL FROM:<>\r\nRCPT TO:%sDATA\r\n", sender);
1070 i = strlen (sender);
1071 fprintf (gp, "To: %*.*s\r\nSubject: Failed mail (%s)\r\n",
1072 i - 4, i - 4, sender + 1, file);
1073 fprintf (gp, "Date: %s\r\nFrom: Postmaster@%s\r\n\r\n",
1074 dtimenow (0), LocalName ());
1079 fputs ("\r\n------- Begin Returned message\r\n\r\n", gp);
1080 fseek (fp, pos, SEEK_SET);
1081 while (fgets (buffer, sizeof(buffer), fp)) {
1082 if (buffer[0] == '-')
1084 if (strcmp (buffer, ".\r\n"))
1087 fputs ("\r\n------- End Returned Message\r\n\r\n.\r\n", gp);
1102 * This function implements SASL authentication for SMTP. If this function
1103 * completes successfully, then authentication is successful and we've
1104 * (optionally) negotiated a security layer.
1106 * Right now we don't support session encryption.
1109 sm_auth_sasl(char *user, char *mechlist, char *host)
1111 int result, status, outlen;
1112 unsigned int buflen;
1113 char *buf, outbuf[BUFSIZ];
1114 const char *chosen_mech;
1115 sasl_security_properties_t secprops;
1116 sasl_external_properties_t extprops;
1121 * Initialize the callback contexts
1125 user = getusername();
1127 callbacks[SM_SASL_N_CB_USER].context = user;
1130 * This is a _bit_ of a hack ... but if the hostname wasn't supplied
1131 * to us on the command line, then call getpeername and do a
1132 * reverse-address lookup on the IP address to get the name.
1136 struct sockaddr_in sin;
1137 int len = sizeof(sin);
1140 if (getpeername(fileno(sm_wfp), (struct sockaddr *) &sin, &len) < 0) {
1141 sm_ierror("getpeername on SMTP socket failed: %s",
1146 if ((hp = gethostbyaddr((void *) &sin.sin_addr, sizeof(sin.sin_addr),
1147 sin.sin_family)) == NULL) {
1148 sm_ierror("DNS lookup on IP address %s failed",
1149 inet_ntoa(sin.sin_addr));
1153 host = strdup(hp->h_name);
1156 sasl_pw_context[0] = host;
1157 sasl_pw_context[1] = user;
1159 callbacks[SM_SASL_N_CB_PASS].context = sasl_pw_context;
1161 result = sasl_client_init(callbacks);
1163 if (result != SASL_OK) {
1164 sm_ierror("SASL library initialization failed: %s",
1165 sasl_errstring(result, NULL, NULL));
1169 result = sasl_client_new("smtp", host, NULL, SASL_SECURITY_LAYER, &conn);
1171 if (result != SASL_OK) {
1172 sm_ierror("SASL client initialization failed: %s",
1173 sasl_errstring(result, NULL, NULL));
1178 * Initialize the security properties
1181 memset(&secprops, 0, sizeof(secprops));
1182 secprops.maxbufsize = BUFSIZ;
1183 secprops.max_ssf = 0; /* XXX change this when we do encryption */
1184 memset(&extprops, 0, sizeof(extprops));
1186 result = sasl_setprop(conn, SASL_SEC_PROPS, &secprops);
1188 if (result != SASL_OK) {
1189 sm_ierror("SASL security property initialization failed: %s",
1190 sasl_errstring(result, NULL, NULL));
1194 result = sasl_setprop(conn, SASL_SSF_EXTERNAL, &extprops);
1196 if (result != SASL_OK) {
1197 sm_ierror("SASL external property initialization failed: %s",
1198 sasl_errstring(result, NULL, NULL));
1203 * Start the actual protocol. Feed the mech list into the library
1204 * and get out a possible initial challenge
1207 result = sasl_client_start(conn, mechlist, NULL, NULL, &buf, &buflen,
1210 if (result != SASL_OK && result != SASL_CONTINUE) {
1211 sm_ierror("SASL client start failed: %s",
1212 sasl_errstring(result, NULL, NULL));
1217 * If we got an initial challenge, send it as part of the AUTH
1218 * command; otherwise, just send a plain AUTH command.
1222 status = sasl_encode64(buf, buflen, outbuf, sizeof(outbuf), NULL);
1224 if (status != SASL_OK) {
1225 sm_ierror("SASL base64 encode failed: %s",
1226 sasl_errstring(status, NULL, NULL));
1230 status = smtalk(SM_AUTH, "AUTH %s %s", chosen_mech, outbuf);
1232 status = smtalk(SM_AUTH, "AUTH %s", chosen_mech);
1235 * Now we loop until we either fail, get a SASL_OK, or a 235
1236 * response code. Receive the challenges and process them until
1240 while (result == SASL_CONTINUE) {
1243 * If we get a 235 response, that means authentication has
1244 * succeeded and we need to break out of the loop (yes, even if
1245 * we still get SASL_CONTINUE from sasl_client_step()).
1247 * Otherwise, if we get a message that doesn't seem to be a
1248 * valid response, then abort
1253 else if (status < 300 || status > 399)
1257 * Special case; a zero-length response from the SMTP server
1258 * is returned as a single =. If we get that, then set buflen
1259 * to be zero. Otherwise, just decode the response.
1262 if (strcmp("=", sm_reply.text) == 0) {
1265 result = sasl_decode64(sm_reply.text, sm_reply.length,
1268 if (result != SASL_OK) {
1269 smtalk(SM_AUTH, "*");
1270 sm_ierror("SASL base64 decode failed: %s",
1271 sasl_errstring(result, NULL, NULL));
1276 result = sasl_client_step(conn, outbuf, outlen, NULL, &buf, &buflen);
1278 if (result != SASL_OK && result != SASL_CONTINUE) {
1279 smtalk(SM_AUTH, "*");
1280 sm_ierror("SASL client negotiation failed: %s",
1281 sasl_errstring(result, NULL, NULL));
1285 status = sasl_encode64(buf, buflen, outbuf, sizeof(outbuf), NULL);
1288 if (status != SASL_OK) {
1289 smtalk(SM_AUTH, "*");
1290 sm_ierror("SASL base64 encode failed: %s",
1291 sasl_errstring(status, NULL, NULL));
1295 status = smtalk(SM_AUTH, outbuf);
1299 * Make sure that we got the correct response
1302 if (status < 200 || status > 299)
1306 * Depending on the mechanism, we need to do a FINAL call to
1307 * sasl_client_step(). Do that now.
1310 result = sasl_client_step(conn, NULL, 0, NULL, &buf, &buflen);
1312 if (result != SASL_OK) {
1313 sm_ierror("SASL final client negotiation failed: %s",
1314 sasl_errstring(result, NULL, NULL));
1319 * We _should_ have completed the authentication successfully.
1320 * Get a few properties from the authentication exchange.
1323 result = sasl_getprop(conn, SASL_MAXOUTBUF, (void **) &outbufmax);
1325 if (result != SASL_OK) {
1326 sm_ierror("Cannot retrieve SASL negotiated output buffer size: %s",
1327 sasl_errstring(result, NULL, NULL));
1331 maxoutbuf = *outbufmax;
1333 result = sasl_getprop(conn, SASL_SSF, (void **) &ssf);
1337 if (result != SASL_OK) {
1338 sm_ierror("Cannot retrieve SASL negotiated security strength "
1339 "factor: %s", sasl_errstring(result, NULL, NULL));
1343 if (maxoutbuf == 0 || maxoutbuf > BUFSIZ)
1352 * Our callback functions to feed data to the SASL library
1356 sm_get_user(void *context, int id, const char **result, unsigned *len)
1358 char *user = (char *) context;
1360 if (! result || id != SASL_CB_USER)
1361 return SASL_BADPARAM;
1365 *len = strlen(user);
1371 sm_get_pass(sasl_conn_t *conn, void *context, int id,
1372 sasl_secret_t **psecret)
1374 char **pw_context = (char **) context;
1378 if (! psecret || id != SASL_CB_PASS)
1379 return SASL_BADPARAM;
1381 ruserpass(pw_context[0], &(pw_context[1]), &pass);
1385 *psecret = (sasl_secret_t *) malloc(sizeof(sasl_secret_t) + len);
1392 (*psecret)->len = len;
1393 strcpy((*psecret)->data, pass);
1398 #endif /* CYRUS_SASL */
1401 sm_ierror (char *fmt, ...)
1406 vsnprintf (sm_reply.text, sizeof(sm_reply.text), fmt, ap);
1409 sm_reply.length = strlen (sm_reply.text);
1410 sm_reply.code = NOTOK;
1417 smtalk (int time, char *fmt, ...)
1421 char buffer[BUFSIZ];
1424 vsnprintf (buffer, sizeof(buffer), fmt, ap);
1428 printf ("=> %s\n", buffer);
1436 if (strcmp (buffer, ".") == 0)
1438 fprintf (sm_wfp, "%s\r\n", buffer);
1442 if (ferror (sm_wfp))
1443 return sm_werror ();
1444 snprintf (file, sizeof(file), "%s%c.bulk", sm_tmpfil,
1445 (char) (sm_ispool + 'a' - 1));
1446 if (rename (sm_tmpfil, file) == NOTOK) {
1450 snprintf (sm_reply.text, sizeof(sm_reply.text),
1451 "error renaming %s to %s: ", sm_tmpfil, file);
1455 if ((s = strerror (errno)))
1456 strncpy (bp, s, sizeof(sm_reply.text) - len);
1458 snprintf (bp, sizeof(sm_reply.text) - len,
1459 "unknown error %d", errno);
1460 sm_reply.length = strlen (sm_reply.text);
1461 sm_reply.code = NOTOK;
1465 if (sm_wfp = fopen (sm_tmpfil, "w"))
1466 chmod (sm_tmpfil, 0600);
1477 ftruncate (fileno (sm_wfp), 0L);
1478 fseek (sm_wfp, 0L, SEEK_SET);
1497 printf ("<= %d\n", result);
1501 sm_reply.text[sm_reply.length = 0] = NULL;
1502 return (sm_reply.code = result);
1507 alarm ((unsigned) time);
1508 if ((result = sm_wrecord (buffer, strlen (buffer))) != NOTOK)
1517 * write the buffer to the open SMTP channel
1521 sm_wrecord (char *buffer, int len)
1524 return sm_werror ();
1526 fwrite (buffer, sizeof(*buffer), len, sm_wfp);
1527 fputs ("\r\n", sm_wfp);
1530 return (ferror (sm_wfp) ? sm_werror () : OK);
1535 sm_wstream (char *buffer, int len)
1538 static char lc = '\0';
1541 return sm_werror ();
1543 if (buffer == NULL && len == 0) {
1545 fputs ("\r\n", sm_wfp);
1547 return (ferror (sm_wfp) ? sm_werror () : OK);
1550 for (bp = buffer; len > 0; bp++, len--) {
1554 fputc ('\r', sm_wfp);
1559 fputc ('.', sm_wfp);/* FALL THROUGH */
1563 fputc (*bp, sm_wfp);
1564 if (ferror (sm_wfp))
1565 return sm_werror ();
1570 return (ferror (sm_wfp) ? sm_werror () : OK);
1575 * On some systems, strlen and strcpy are defined as preprocessor macros. This
1576 * causes compile problems with the #ifdef MPOP in the middle. Should the
1577 * #ifdef MPOP be removed, remove these #undefs.
1590 strlen (strcpy (sm_reply.text, sm_wfp == NULL ? "no socket opened"
1591 : sm_alarmed ? "write to socket timed out"
1593 : sm_ispool ? "error writing to spool file"
1595 : "error writing to socket"));
1597 return (sm_reply.code = NOTOK);
1604 int i, code, cont, bc, rc, more;
1606 char **ehlo, buffer[BUFSIZ];
1609 static int at_least_once = 0;
1611 if (at_least_once) {
1614 for (ehlo = EHLOkeys; *ehlo; ehlo++) {
1628 sm_reply.length = 0;
1629 sm_reply.text[0] = 0;
1631 rc = sizeof(sm_reply.text) - 1;
1633 for (more = FALSE; sm_rrecord (bp = buffer, &bc) != NOTOK;) {
1635 printf ("<= %s\n", buffer);
1640 && strncmp (buffer, "250", sizeof("250") - 1) == 0
1641 && (buffer[3] == '-' || doingEHLO == 2)
1643 if (doingEHLO == 2) {
1644 if ((*ehlo = malloc ((size_t) (strlen (buffer + 4) + 1)))) {
1645 strcpy (*ehlo++, buffer + 4);
1647 if (ehlo >= EHLOkeys + MAXEHLO)
1657 for (; bc > 0 && (!isascii (*bp) || !isdigit (*bp)); bp++, bc--)
1663 for (; bc > 0 && isspace (*bp); bp++, bc--)
1665 if (bc > 0 && *bp == '-') {
1668 for (; bc > 0 && isspace (*bp); bp++, bc--)
1673 if (code != sm_reply.code || cont)
1677 sm_reply.code = code;
1680 strncpy (buffer, sm_noreply, sizeof(buffer));
1682 bc = strlen (sm_noreply);
1686 if ((i = min (bc, rc)) > 0) {
1687 strncpy (rp, bp, i);
1690 if (more && rc > strlen (sm_moreply) + 1) {
1691 strncpy (sm_reply.text + rc, sm_moreply, sizeof(sm_reply.text) - rc);
1692 rc += strlen (sm_moreply);
1697 if (sm_reply.code < 100) {
1699 printf ("%s\n", sm_reply.text);
1705 sm_reply.length = rp - sm_reply.text;
1706 return sm_reply.code;
1713 sm_rrecord (char *buffer, int *len)
1716 return sm_rerror ();
1718 buffer[*len = 0] = 0;
1720 fgets (buffer, BUFSIZ, sm_rfp);
1721 *len = strlen (buffer);
1722 if (ferror (sm_rfp) || feof (sm_rfp))
1723 return sm_rerror ();
1724 if (buffer[*len - 1] != '\n')
1725 while (getc (sm_rfp) != '\n' && !ferror (sm_rfp) && !feof (sm_rfp))
1728 if (buffer[*len - 2] == '\r')
1730 buffer[*len - 1] = 0;
1739 if (sm_mts == MTS_SMTP)
1741 strlen (strcpy (sm_reply.text, sm_rfp == NULL ? "no socket opened"
1742 : sm_alarmed ? "read from socket timed out"
1743 : feof (sm_rfp) ? "premature end-of-file on socket"
1744 : "error reading from socket"));
1747 strlen (strcpy (sm_reply.text, sm_rfp == NULL ? "no pipe opened"
1748 : sm_alarmed ? "read from pipe timed out"
1749 : feof (sm_rfp) ? "premature end-of-file on pipe"
1750 : "error reading from pipe"));
1752 return (sm_reply.code = NOTOK);
1759 #ifndef RELIABLE_SIGNALS
1760 SIGNAL (SIGALRM, alrmser);
1765 printf ("timed out...\n");
1772 rp_string (int code)
1775 static char buffer[BUFSIZ];
1777 switch (sm_reply.code != NOTOK ? code : NOTOK) {
1797 snprintf (buffer, sizeof(buffer), "[%s] %s", text, sm_reply.text);
1817 snprintf (buffer, sizeof(buffer), "[%s] %3d %s",
1818 text, sm_reply.code, sm_reply.text);
1825 static char *broken[MAXARGS + 1];
1828 smail_brkstring (char *strg, char *brksep, char *brkterm)
1835 for (bi = 0; bi < MAXARGS; bi++) {
1836 while (smail_brkany (c = *sp, brksep))
1838 if (!c || smail_brkany (c, brkterm)) {
1845 while ((c = *++sp) && !smail_brkany (c, brksep) && !smail_brkany (c, brkterm))
1848 broken[MAXARGS] = 0;
1855 * returns 1 if chr in strg, 0 otherwise
1858 smail_brkany (char chr, char *strg)
1863 for (sp = strg; *sp; sp++)
1870 * copy a string array and return pointer to end
1873 smail_copyip (char **p, char **q, int len_q)
1875 while (*p && --len_q > 0)
1894 for (ehlo = EHLOkeys; *ehlo; ehlo++) {
1896 if (strncmp (ep, s, len) == 0) {
1897 for (ep += len; *ep == ' '; ep++)