2 * Copyright (c) 1997-2001 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include "push_locl.h"
35 RCSID("$Id: push.c,v 1.45 2001/09/04 09:45:52 assar Exp $");
38 static int use_v4 = -1;
42 static int use_v5 = -1;
43 static krb5_context context;
46 static char *port_str;
47 static int verbose_level;
50 static int do_version;
54 static char *header_str;
56 struct getargs args[] = {
58 { "krb4", '4', arg_flag, &use_v4, "Use Kerberos V4",
62 { "krb5", '5', arg_flag, &use_v5, "Use Kerberos V5",
65 { "verbose",'v', arg_counter, &verbose_level, "Verbose",
67 { "fork", 'f', arg_flag, &do_fork, "Fork deleting proc",
69 { "leave", 'l', arg_flag, &do_leave, "Leave mail on server",
71 { "port", 'p', arg_string, &port_str, "Use this port",
72 "number-or-service" },
73 { "from", 0, arg_flag, &do_from, "Behave like from",
75 { "headers", 0, arg_string, &header_str, "Headers to print", NULL },
76 { "count", 'c', arg_flag, &do_count, "Print number of messages", NULL},
77 { "version", 0, arg_flag, &do_version, "Print version",
79 { "help", 0, arg_flag, &do_help, NULL,
88 sizeof(args) / sizeof(args[0]),
90 "[[{po:username[@hostname] | hostname[:username]}] ...] "
96 do_connect (const char *hostname, int port, int nodelay)
98 struct addrinfo *ai, *a;
99 struct addrinfo hints;
102 char portstr[NI_MAXSERV];
104 memset (&hints, 0, sizeof(hints));
105 hints.ai_socktype = SOCK_STREAM;
106 hints.ai_protocol = IPPROTO_TCP;
108 snprintf (portstr, sizeof(portstr), "%u", ntohs(port));
110 error = getaddrinfo (hostname, portstr, &hints, &ai);
112 errx (1, "getaddrinfo(%s): %s", hostname, gai_strerror(error));
114 for (a = ai; a != NULL; a = a->ai_next) {
115 s = socket (a->ai_family, a->ai_socktype, a->ai_protocol);
118 if (connect (s, a->ai_addr, a->ai_addrlen) < 0) {
119 warn ("connect(%s)", hostname);
127 warnx ("failed to contact %s", hostname);
131 if(setsockopt(s, IPPROTO_TCP, TCP_NODELAY,
132 (void *)&nodelay, sizeof(nodelay)) < 0)
133 err (1, "setsockopt TCP_NODELAY");
137 typedef enum { INIT = 0, GREET, USER, PASS, STAT, RETR, TOP,
138 DELE, XDELE, QUIT} pop_state;
140 #define PUSH_BUFSIZ 65536
145 struct iovec *iovecs;
146 size_t niovecs, maxiovecs, allociovecs;
151 write_state_init (struct write_state *w, int fd)
154 w->maxiovecs = UIO_MAXIOV;
158 w->allociovecs = min(STEP, w->maxiovecs);
160 w->iovecs = emalloc(w->allociovecs * sizeof(*w->iovecs));
165 write_state_add (struct write_state *w, void *v, size_t len)
167 if(w->niovecs == w->allociovecs) {
168 if(w->niovecs == w->maxiovecs) {
169 if(writev (w->fd, w->iovecs, w->niovecs) < 0)
173 w->allociovecs = min(w->allociovecs + STEP, w->maxiovecs);
174 w->iovecs = erealloc (w->iovecs,
175 w->allociovecs * sizeof(*w->iovecs));
178 w->iovecs[w->niovecs].iov_base = v;
179 w->iovecs[w->niovecs].iov_len = len;
184 write_state_flush (struct write_state *w)
187 if (writev (w->fd, w->iovecs, w->niovecs) < 0)
194 write_state_destroy (struct write_state *w)
203 const char *outfilename,
204 const char *header_str,
210 char out_buf[PUSH_BUFSIZ];
212 char in_buf[PUSH_BUFSIZ + 1]; /* sentinel */
214 char *in_ptr = in_buf;
215 pop_state state = INIT;
216 unsigned count, bytes;
217 unsigned asked_for = 0, retrieved = 0, asked_deleted = 0, deleted = 0;
218 unsigned sent_xdele = 0;
221 size_t from_line_length;
223 struct write_state write_state;
225 char **headers = NULL;
232 tmp2 = tmp = estrdup(header_str);
236 fprintf (stderr, "%s@%s\n", user, host);
237 while (*tmp != '\0') {
238 tmp = strchr(tmp, ',');
245 headers = emalloc(sizeof(char *) * (numheaders + 1));
246 for (i = 0; i < numheaders; i++) {
247 headers[i] = strtok_r(tmp2, ",", &tmp2);
249 headers[numheaders] = NULL;
251 out_fd = open(outfilename, O_WRONLY | O_APPEND | O_CREAT, 0666);
253 err (1, "open %s", outfilename);
255 fprintf (stderr, "%s@%s -> %s\n", user, host, outfilename);
259 from_line_length = snprintf (from_line, sizeof(from_line),
260 "From %s %s", "push", ctime(&now));
262 out_len = snprintf (out_buf, sizeof(out_buf),
263 "USER %s\r\nPASS hej\r\nSTAT\r\n",
266 errx (1, "snprintf failed");
267 if (net_write (s, out_buf, out_len) != out_len)
270 write (STDERR_FILENO, out_buf, out_len);
273 write_state_init (&write_state, out_fd);
275 while(state != QUIT) {
276 fd_set readset, writeset;
281 errx (1, "fd too large");
283 if (((state == STAT || state == RETR || state == TOP)
284 && asked_for < count)
285 || (state == XDELE && !sent_xdele)
286 || (state == DELE && asked_deleted < count))
288 ret = select (s + 1, &readset, &writeset, NULL, NULL);
296 if (FD_ISSET(s, &readset)) {
301 ret = read (s, in_ptr, sizeof(in_buf) - in_len - 1);
305 errx (1, "EOF during read");
314 && (p = strstr(beg, "\r\n")) != NULL) {
318 for (i = 0; i < numheaders; i++) {
321 len = min(p - copy + 1, strlen(headers[i]));
322 if (strncasecmp(copy, headers[i], len) == 0) {
323 fprintf (stdout, "%.*s\n", (int)(p - copy), copy);
326 if (beg[0] == '.' && beg[1] == '\r' && beg[2] == '\n') {
328 fprintf (stdout, "\n");
330 if (++retrieved == count) {
332 net_write (s, "QUIT\r\n", 6);
334 net_write (STDERR_FILENO, "QUIT\r\n", 6);
339 } else if (state == RETR) {
342 if (beg[1] == '\r' && beg[2] == '\n') {
344 write_state_add(&write_state, "\n", 1);
348 if (++retrieved == count) {
349 write_state_flush (&write_state);
350 if (fsync (out_fd) < 0)
355 net_write (s, "QUIT\r\n", 6);
357 net_write (STDERR_FILENO, "QUIT\r\n", 6);
375 fprintf (stderr, "deleting... ");
384 strncmp(copy, "From ", min(p - copy + 1, 5)) == 0)
385 write_state_add(&write_state, ">", 1);
386 write_state_add(&write_state, copy, p - copy + 1);
387 blank_line = (*copy == '\n');
390 } else if (rem >= 3 && strncmp (beg, "+OK", 3) == 0) {
393 write_state_add(&write_state,
394 from_line, from_line_length);
400 } else if (state == XDELE) {
402 net_write (s, "QUIT\r\n", 6);
404 net_write (STDERR_FILENO, "QUIT\r\n", 6);
406 } else if (state == DELE) {
407 if (++deleted == count) {
409 net_write (s, "QUIT\r\n", 6);
411 net_write (STDERR_FILENO, "QUIT\r\n", 6);
414 } else if (++state == STAT) {
415 if(sscanf (beg + 4, "%u %u", &count, &bytes) != 2)
416 errx(1, "Bad STAT-line: %.*s", (int)(p - beg), beg);
418 fprintf (stderr, "%u message(s) (%u bytes). "
422 fprintf (stderr, "\n");
423 } else if (do_count) {
424 fprintf (stderr, "%u message(s) (%u bytes).\n",
429 net_write (s, "QUIT\r\n", 6);
431 net_write (STDERR_FILENO, "QUIT\r\n", 6);
444 errx (1, "Bad response: %.*s", (int)(p - beg), beg);
448 write_state_flush (&write_state);
450 memmove (in_buf, beg, rem);
452 in_ptr = in_buf + rem;
454 if (FD_ISSET(s, &writeset)) {
455 if ((state == STAT && !do_from) || state == RETR)
456 out_len = snprintf (out_buf, sizeof(out_buf),
457 "RETR %u\r\n", ++asked_for);
458 else if ((state == STAT && do_from) || state == TOP)
459 out_len = snprintf (out_buf, sizeof(out_buf),
460 "TOP %u 0\r\n", ++asked_for);
461 else if(state == XDELE) {
462 out_len = snprintf(out_buf, sizeof(out_buf),
463 "XDELE %u %u\r\n", 1, count);
466 else if(state == DELE)
467 out_len = snprintf (out_buf, sizeof(out_buf),
468 "DELE %u\r\n", ++asked_deleted);
470 errx (1, "snprintf failed");
471 if (net_write (s, out_buf, out_len) != out_len)
474 write (STDERR_FILENO, out_buf, out_len);
478 fprintf (stderr, "Done\n");
483 write_state_destroy (&write_state);
490 do_v5 (const char *host,
493 const char *filename,
494 const char *header_str,
500 krb5_auth_context auth_context = NULL;
501 krb5_principal server;
504 s = do_connect (host, port, 1);
508 ret = krb5_sname_to_principal (context,
514 warnx ("krb5_sname_to_principal: %s",
515 krb5_get_err_text (context, ret));
519 ret = krb5_sendauth (context,
532 krb5_free_principal (context, server);
534 warnx ("krb5_sendauth: %s",
535 krb5_get_err_text (context, ret));
538 return doit (s, host, user, filename, header_str, leavep, verbose, forkp);
544 do_v4 (const char *host,
547 const char *filename,
548 const char *header_str,
556 des_key_schedule sched;
560 s = do_connect (host, port, 1);
563 ret = krb_sendauth(0,
568 krb_realmofhost(host),
577 warnx("krb_sendauth: %s", krb_get_err_text(ret));
580 return doit (s, host, user, filename, header_str, leavep, verbose, forkp);
586 #ifdef HESIOD_INTERFACES
589 hesiod_get_pobox (const char **user)
592 struct hesiod_postoffice *hpo;
595 if(hesiod_init (&context) != 0)
596 err (1, "hesiod_init");
598 hpo = hesiod_getmailhost (context, *user);
600 warn ("hesiod_getmailhost %s", *user);
602 if (strcasecmp(hpo->hesiod_po_type, "pop") != 0)
603 errx (1, "Unsupported po type %s", hpo->hesiod_po_type);
605 ret = estrdup(hpo->hesiod_po_host);
606 *user = estrdup(hpo->hesiod_po_name);
607 hesiod_free_postoffice (context, hpo);
609 hesiod_end (context);
613 #else /* !HESIOD_INTERFACES */
616 hesiod_get_pobox (const char **user)
619 struct hes_postoffice *hpo;
621 hpo = hes_getmailhost (*user);
623 warn ("hes_getmailhost %s", *user);
625 if (strcasecmp(hpo->po_type, "pop") != 0)
626 errx (1, "Unsupported po type %s", hpo->po_type);
628 ret = estrdup(hpo->po_host);
629 *user = estrdup(hpo->po_name);
634 #endif /* HESIOD_INTERFACES */
639 get_pobox (const char **user)
644 ret = hesiod_get_pobox (user);
648 ret = getenv("MAILHOST");
650 errx (1, "MAILHOST not set");
655 parse_pobox (char *a0, const char **host, const char **user)
663 *user = getenv ("USERNAME");
665 struct passwd *pwd = getpwuid (getuid ());
668 errx (1, "Who are you?");
669 *user = estrdup (pwd->pw_name);
671 *host = get_pobox (user);
675 /* if the specification starts with po:, remember this information */
676 if(strncmp(a0, "po:", 3) == 0) {
680 /* if there is an `@', the hostname is after it, otherwise at the
681 beginning of the string */
689 /* if there is a `:', the username comes before it, otherwise at
690 the beginning of the string */
699 /* some inconsistent compatibility with various mailers */
703 u = get_default_username ();
705 errx (1, "Who are you?");
713 main(int argc, char **argv)
718 const char *host, *user, *filename = NULL;
721 setprogname (argv[0]);
727 ret = krb5_init_context (&context);
729 errx (1, "krb5_init_context failed: %d", ret);
733 if (getarg (args, sizeof(args) / sizeof(args[0]), argc, argv,
740 #if defined(KRB4) && defined(KRB5)
741 if(use_v4 == -1 && use_v5 == 1)
743 if(use_v5 == -1 && use_v4 == 1)
755 if (do_from && header_str == NULL)
756 header_str = "From:";
757 else if (header_str != NULL)
771 } else if (argc == 2) {
779 struct servent *s = roken_getservbyname (port_str, "tcp");
786 port = strtol (port_str, &ptr, 10);
787 if (port == 0 && ptr == port_str)
788 errx (1, "Bad port `%s'", port_str);
794 port = krb5_getportbyname (context, "kpop", "tcp", 1109);
796 port = k_getportbyname ("kpop", "tcp", htons(1109));
798 #error must define KRB4 or KRB5
802 parse_pobox (pobox, &host, &user);
806 ret = do_v5 (host, port, user, filename, header_str,
807 do_leave, verbose_level, do_fork);
813 ret = do_v4 (host, port, user, filename, header_str,
814 do_leave, verbose_level, do_fork);