2 * Copyright (c) 1997-2004 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 1.47.2.1 2004/06/21 10:54:46 lha 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 static char *pop_state_string[] = {
141 "INIT", "GREET", "USER", "PASS", "STAT", "RETR", "TOP",
142 "DELE", "XDELE", "QUIT"
145 #define PUSH_BUFSIZ 65536
150 struct iovec *iovecs;
151 size_t niovecs, maxiovecs, allociovecs;
156 write_state_init (struct write_state *w, int fd)
159 w->maxiovecs = UIO_MAXIOV;
163 w->allociovecs = min(STEP, w->maxiovecs);
165 w->iovecs = emalloc(w->allociovecs * sizeof(*w->iovecs));
170 write_state_add (struct write_state *w, void *v, size_t len)
172 if(w->niovecs == w->allociovecs) {
173 if(w->niovecs == w->maxiovecs) {
174 if(writev (w->fd, w->iovecs, w->niovecs) < 0)
178 w->allociovecs = min(w->allociovecs + STEP, w->maxiovecs);
179 w->iovecs = erealloc (w->iovecs,
180 w->allociovecs * sizeof(*w->iovecs));
183 w->iovecs[w->niovecs].iov_base = v;
184 w->iovecs[w->niovecs].iov_len = len;
189 write_state_flush (struct write_state *w)
192 if (writev (w->fd, w->iovecs, w->niovecs) < 0)
199 write_state_destroy (struct write_state *w)
208 const char *outfilename,
209 const char *header_str,
215 char out_buf[PUSH_BUFSIZ];
221 pop_state state = INIT;
222 unsigned count, bytes;
223 unsigned asked_for = 0, retrieved = 0, asked_deleted = 0, deleted = 0;
224 unsigned sent_xdele = 0;
227 size_t from_line_length;
229 struct write_state write_state;
231 char **headers = NULL;
235 in_buf = emalloc(PUSH_BUFSIZ + 1);
237 in_buf_size = PUSH_BUFSIZ;
242 tmp2 = tmp = estrdup(header_str);
246 fprintf (stderr, "%s@%s\n", user, host);
247 while (*tmp != '\0') {
248 tmp = strchr(tmp, ',');
255 headers = emalloc(sizeof(char *) * (numheaders + 1));
256 for (i = 0; i < numheaders; i++) {
257 headers[i] = strtok_r(tmp2, ",", &tmp2);
259 headers[numheaders] = NULL;
261 out_fd = open(outfilename, O_WRONLY | O_APPEND | O_CREAT, 0666);
263 err (1, "open %s", outfilename);
265 fprintf (stderr, "%s@%s -> %s\n", user, host, outfilename);
269 from_line_length = snprintf (from_line, sizeof(from_line),
270 "From %s %s", "push", ctime(&now));
272 out_len = snprintf (out_buf, sizeof(out_buf),
273 "USER %s\r\nPASS hej\r\nSTAT\r\n",
276 errx (1, "snprintf failed");
277 if (net_write (s, out_buf, out_len) != out_len)
280 fprintf (stderr, "%s", out_buf);
283 write_state_init (&write_state, out_fd);
285 while(state != QUIT) {
286 fd_set readset, writeset;
291 errx (1, "fd too large");
295 fprintf (stderr, "state: %s count: %d asked_for: %d "
296 "retrieved: %d asked_deleted: %d\n",
297 pop_state_string[state],
298 count, asked_for, retrieved, asked_deleted);
300 if (((state == STAT || state == RETR || state == TOP)
301 && asked_for < count)
302 || (state == XDELE && !sent_xdele)
303 || (state == DELE && asked_deleted < count))
305 ret = select (s + 1, &readset, &writeset, NULL, NULL);
313 if (FD_ISSET(s, &readset)) {
318 if(in_len >= in_buf_size) {
319 char *tmp = erealloc(in_buf, in_buf_size + PUSH_BUFSIZ + 1);
320 in_ptr = tmp + (in_ptr - in_buf);
322 in_buf_size += PUSH_BUFSIZ;
325 ret = read (s, in_ptr, in_buf_size - in_len);
329 errx (1, "EOF during read");
338 && (p = strstr(beg, "\r\n")) != NULL) {
342 for (i = 0; i < numheaders; i++) {
345 len = min(p - copy + 1, strlen(headers[i]));
346 if (strncasecmp(copy, headers[i], len) == 0) {
347 fprintf (stdout, "%.*s\n", (int)(p - copy), copy);
350 if (beg[0] == '.' && beg[1] == '\r' && beg[2] == '\n') {
352 fprintf (stdout, "\n");
354 if (++retrieved == count) {
356 net_write (s, "QUIT\r\n", 6);
358 fprintf (stderr, "QUIT\r\n");
363 } else if (state == RETR) {
366 if (beg[1] == '\r' && beg[2] == '\n') {
368 write_state_add(&write_state, "\n", 1);
372 if (++retrieved == count) {
373 write_state_flush (&write_state);
374 if (fsync (out_fd) < 0)
379 net_write (s, "QUIT\r\n", 6);
381 fprintf (stderr, "QUIT\r\n");
399 fprintf (stderr, "deleting... ");
408 strncmp(copy, "From ", min(p - copy + 1, 5)) == 0)
409 write_state_add(&write_state, ">", 1);
410 write_state_add(&write_state, copy, p - copy + 1);
411 blank_line = (*copy == '\n');
414 } else if (rem >= 3 && strncmp (beg, "+OK", 3) == 0) {
417 write_state_add(&write_state,
418 from_line, from_line_length);
424 } else if (state == XDELE) {
426 net_write (s, "QUIT\r\n", 6);
428 fprintf (stderr, "QUIT\r\n");
430 } else if (state == DELE) {
431 if (++deleted == count) {
433 net_write (s, "QUIT\r\n", 6);
435 fprintf (stderr, "QUIT\r\n");
438 } else if (++state == STAT) {
439 if(sscanf (beg + 4, "%u %u", &count, &bytes) != 2)
440 errx(1, "Bad STAT-line: %.*s", (int)(p - beg), beg);
442 fprintf (stderr, "%u message(s) (%u bytes). "
446 fprintf (stderr, "\n");
447 } else if (do_count) {
448 fprintf (stderr, "%u message(s) (%u bytes).\n",
453 net_write (s, "QUIT\r\n", 6);
455 fprintf (stderr, "QUIT\r\n");
468 errx (1, "Bad response: %.*s", (int)(p - beg), beg);
472 write_state_flush (&write_state);
474 memmove (in_buf, beg, rem);
476 in_ptr = in_buf + rem;
478 if (FD_ISSET(s, &writeset)) {
479 if ((state == STAT && !do_from) || state == RETR)
480 out_len = snprintf (out_buf, sizeof(out_buf),
481 "RETR %u\r\n", ++asked_for);
482 else if ((state == STAT && do_from) || state == TOP)
483 out_len = snprintf (out_buf, sizeof(out_buf),
484 "TOP %u 0\r\n", ++asked_for);
485 else if(state == XDELE) {
486 out_len = snprintf(out_buf, sizeof(out_buf),
487 "XDELE %u %u\r\n", 1, count);
490 else if(state == DELE)
491 out_len = snprintf (out_buf, sizeof(out_buf),
492 "DELE %u\r\n", ++asked_deleted);
494 errx (1, "snprintf failed");
495 if (net_write (s, out_buf, out_len) != out_len)
498 fprintf (stderr, "%s", out_buf);
502 fprintf (stderr, "Done\n");
507 write_state_destroy (&write_state);
514 do_v5 (const char *host,
517 const char *filename,
518 const char *header_str,
524 krb5_auth_context auth_context = NULL;
525 krb5_principal server;
528 s = do_connect (host, port, 1);
532 ret = krb5_sname_to_principal (context,
538 warnx ("krb5_sname_to_principal: %s",
539 krb5_get_err_text (context, ret));
543 ret = krb5_sendauth (context,
556 krb5_free_principal (context, server);
558 warnx ("krb5_sendauth: %s",
559 krb5_get_err_text (context, ret));
562 return doit (s, host, user, filename, header_str, leavep, verbose, forkp);
568 do_v4 (const char *host,
571 const char *filename,
572 const char *header_str,
580 des_key_schedule sched;
584 s = do_connect (host, port, 1);
587 ret = krb_sendauth(0,
592 krb_realmofhost(host),
601 warnx("krb_sendauth: %s", krb_get_err_text(ret));
604 return doit (s, host, user, filename, header_str, leavep, verbose, forkp);
610 #ifdef HESIOD_INTERFACES
613 hesiod_get_pobox (const char **user)
616 struct hesiod_postoffice *hpo;
619 if(hesiod_init (&context) != 0)
620 err (1, "hesiod_init");
622 hpo = hesiod_getmailhost (context, *user);
624 warn ("hesiod_getmailhost %s", *user);
626 if (strcasecmp(hpo->hesiod_po_type, "pop") != 0)
627 errx (1, "Unsupported po type %s", hpo->hesiod_po_type);
629 ret = estrdup(hpo->hesiod_po_host);
630 *user = estrdup(hpo->hesiod_po_name);
631 hesiod_free_postoffice (context, hpo);
633 hesiod_end (context);
637 #else /* !HESIOD_INTERFACES */
640 hesiod_get_pobox (const char **user)
643 struct hes_postoffice *hpo;
645 hpo = hes_getmailhost (*user);
647 warn ("hes_getmailhost %s", *user);
649 if (strcasecmp(hpo->po_type, "pop") != 0)
650 errx (1, "Unsupported po type %s", hpo->po_type);
652 ret = estrdup(hpo->po_host);
653 *user = estrdup(hpo->po_name);
658 #endif /* HESIOD_INTERFACES */
663 get_pobox (const char **user)
668 ret = hesiod_get_pobox (user);
672 ret = getenv("MAILHOST");
674 errx (1, "MAILHOST not set");
679 parse_pobox (char *a0, const char **host, const char **user)
687 *user = getenv ("USERNAME");
689 struct passwd *pwd = getpwuid (getuid ());
692 errx (1, "Who are you?");
693 *user = estrdup (pwd->pw_name);
695 *host = get_pobox (user);
699 /* if the specification starts with po:, remember this information */
700 if(strncmp(a0, "po:", 3) == 0) {
704 /* if there is an `@', the hostname is after it, otherwise at the
705 beginning of the string */
713 /* if there is a `:', the username comes before it, otherwise at
714 the beginning of the string */
723 /* some inconsistent compatibility with various mailers */
727 u = get_default_username ();
729 errx (1, "Who are you?");
737 main(int argc, char **argv)
742 const char *host, *user, *filename = NULL;
745 setprogname (argv[0]);
751 ret = krb5_init_context (&context);
753 errx (1, "krb5_init_context failed: %d", ret);
757 if (getarg (args, sizeof(args) / sizeof(args[0]), argc, argv,
764 #if defined(KRB4) && defined(KRB5)
765 if(use_v4 == -1 && use_v5 == 1)
767 if(use_v5 == -1 && use_v4 == 1)
779 if (do_from && header_str == NULL)
780 header_str = "From:";
781 else if (header_str != NULL)
795 } else if (argc == 2) {
803 struct servent *s = roken_getservbyname (port_str, "tcp");
810 port = strtol (port_str, &ptr, 10);
811 if (port == 0 && ptr == port_str)
812 errx (1, "Bad port `%s'", port_str);
818 port = krb5_getportbyname (context, "kpop", "tcp", 1109);
820 port = k_getportbyname ("kpop", "tcp", htons(1109));
822 #error must define KRB4 or KRB5
826 parse_pobox (pobox, &host, &user);
830 ret = do_v5 (host, port, user, filename, header_str,
831 do_leave, verbose_level, do_fork);
837 ret = do_v4 (host, port, user, filename, header_str,
838 do_leave, verbose_level, do_fork);