3 * popsbr.c -- POP client subroutines
10 #if defined(NNTP) && !defined(PSHSBR)
14 #ifdef NNTP /* building pshsbr.o from popsbr.c */
18 #if !defined(NNTP) && defined(APOP)
23 #include <h/signals.h>
28 #define TRMLEN (sizeof TRM - 1)
30 static int poprint = 0;
31 static int pophack = 0;
33 char response[BUFSIZ];
40 #if !defined(NNTP) && defined(MPOP)
41 # define command pop_command
42 # define multiline pop_multiline
46 # ifdef BPOP /* stupid */
47 static int xtnd_last = -1;
48 static int xtnd_first = 0;
49 static char xtnd_name[512]; /* INCREDIBLE HACK!! */
56 #if !defined(NNTP) && defined(APOP)
57 static char *pop_auth (char *, char *);
60 #if defined(NNTP) || !defined(MPOP)
61 /* otherwise they are not static functions */
62 static int command(const char *, ...);
63 static int multiline(void);
66 static int traverse (int (*)(), const char *, ...);
67 static int vcommand(const char *, va_list);
68 static int getline (char *, int, FILE *);
69 static int putline (char *, FILE *);
72 #if !defined(NNTP) && defined(APOP)
74 pop_auth (char *user, char *pass)
78 unsigned char *dp, *ep, digest[16];
80 static char buffer[BUFSIZ];
82 if ((cp = strchr (response, '<')) == NULL
83 || (lp = strchr (cp, '>')) == NULL) {
84 snprintf (buffer, sizeof(buffer), "APOP not available: %s", response);
85 strncpy (response, buffer, sizeof(response));
90 snprintf (buffer, sizeof(buffer), "%s%s", cp, pass);
93 MD5Update (&mdContext, (unsigned char *) buffer,
94 (unsigned int) strlen (buffer));
95 MD5Final (digest, &mdContext);
98 buflen = sizeof(buffer);
100 snprintf (cp, buflen, "%s ", user);
105 for (ep = (dp = digest) + sizeof(digest) / sizeof(digest[0]); dp < ep; ) {
106 snprintf (cp, buflen, "%02x", *dp++ & 0xff);
114 #endif /* !NNTP && APOP */
118 pop_init (char *host, char *user, char *pass, int snoop, int rpop)
126 if ((apop = rpop) < 0)
132 if ((fd1 = client (host, "tcp", POPSERVICE, rpop, response, sizeof(response))) == NOTOK)
134 snprintf (buffer, sizeof(buffer), "%s/%s", KPOP_PRINCIPAL, POPSERVICE);
135 if ((fd1 = client (host, "tcp", buffer, rpop, response, sizeof(response))) == NOTOK)
138 if ((fd1 = client (host, "tcp", "nntp", rpop, response, sizeof(response))) == NOTOK)
142 if ((fd2 = dup (fd1)) == NOTOK) {
145 if ((s = strerror(errno)))
146 snprintf (response, sizeof(response),
147 "unable to dup connection descriptor: %s", s);
149 snprintf (response, sizeof(response),
150 "unable to dup connection descriptor: unknown error");
155 if (pop_set (fd1, fd2, snoop) == NOTOK)
157 if (pop_set (fd1, fd2, snoop, (char *)0) == NOTOK)
161 SIGNAL (SIGPIPE, SIG_IGN);
163 switch (getline (response, sizeof response, input)) {
166 fprintf (stderr, "<--- %s\n", response);
168 if (*response == '+') {
172 char *cp = pop_auth (user, pass);
174 if (cp && command ("APOP %s", cp) != NOTOK)
179 if (command ("USER %s", user) != NOTOK
180 && command ("%s %s", rpop ? "RPOP" : (pophack++, "PASS"),
184 if (command ("USER %s", user) != NOTOK
185 && command ("PASS %s", pass) != NOTOK)
190 if (*response < CHAR_ERR) {
191 command ("MODE READER");
195 strncpy (buffer, response, sizeof(buffer));
197 strncpy (response, buffer, sizeof(response));
203 fprintf (stderr, "%s\n", response);
209 return NOTOK; /* NOTREACHED */
214 pop_set (int in, int out, int snoop, char *myname)
217 pop_set (int in, int out, int snoop)
222 if (myname && *myname) {
223 /* interface from bbc to msh */
224 strncpy (xtnd_name, myname, sizeof(xtnd_name));
228 if ((input = fdopen (in, "r")) == NULL
229 || (output = fdopen (out, "w")) == NULL) {
230 strncpy (response, "fdopen failed on connection descriptor", sizeof(response));
246 pop_fd (char *in, int inlen, char *out, int outlen)
248 snprintf (in, inlen, "%d", fileno (input));
249 snprintf (out, outlen, "%d", fileno (output));
255 * Find out number of messages available
256 * and their total size.
260 pop_stat (int *nmsgs, int *nbytes)
267 if (command ("STAT") == NOTOK)
270 *nmsgs = *nbytes = 0;
271 sscanf (response, "+OK %d %d", nmsgs, nbytes);
274 if (xtnd_last < 0) { /* in msh, xtnd_name is set from myname */
275 if (command("GROUP %s", xtnd_name) == NOTOK)
278 ap = brkstring (response, " ", "\n"); /* "211 nart first last ggg" */
279 xtnd_first = atoi (ap[2]);
280 xtnd_last = atoi (ap[3]);
283 /* nmsgs is not the real nart, but an incredible simuation */
285 *nmsgs = xtnd_last - xtnd_first + 1; /* because of holes... */
288 *nbytes = xtnd_first; /* for subtracting offset in msh() */
296 pop_exists (int (*action)())
298 #ifdef XMSGS /* hacked into NNTP 1.5 */
299 if (traverse (action, "XMSGS %d-%d", (targ_t) xtnd_first, (targ_t) xtnd_last) == OK)
302 /* provided by INN 1.4 */
303 if (traverse (action, "LISTGROUP") == OK)
305 return traverse (action, "XHDR NONAME %d-%d", (targ_t) xtnd_first, (targ_t) xtnd_last);
312 pop_list (int msgno, int *nmsgs, int *msgs, int *bytes, int *ids)
315 pop_list (int msgno, int *nmsgs, int *msgs, int *bytes)
325 if (command ("LIST %d", msgno) == NOTOK)
330 sscanf (response, "+OK %d %d %d", msgs, bytes, ids);
333 sscanf (response, "+OK %d %d", msgs, bytes);
336 if (command ("STAT %d", msgno) == NOTOK)
346 if (command ("LIST") == NOTOK)
349 for (i = 0; i < *nmsgs; i++)
350 switch (multiline ()) {
360 sscanf (response, "%d %d %d",
361 msgs++, bytes++, ids++);
364 sscanf (response, "%d %d", msgs++, bytes++);
368 switch (multiline ()) {
383 pop_retr (int msgno, int (*action)())
386 return traverse (action, "RETR %d", (targ_t) msgno);
388 return traverse (action, "ARTICLE %d", (targ_t) msgno);
394 traverse (int (*action)(), const char *fmt, ...)
398 char buffer[sizeof(response)];
401 result = vcommand (fmt, ap);
406 strncpy (buffer, response, sizeof(buffer));
409 switch (multiline ()) {
414 strncpy (response, buffer, sizeof(response));
418 (*action) (response);
427 return command ("DELE %d", msgno);
434 return command ("NOOP");
438 #if defined(MPOP) && !defined(NNTP)
442 return command ("LAST");
450 return command ("RSET");
455 pop_top (int msgno, int lines, int (*action)())
458 return traverse (action, "TOP %d %d", (targ_t) msgno, (targ_t) lines);
460 return traverse (action, "HEAD %d", (targ_t) msgno);
467 pop_xtnd (int (*action)(), char *fmt, ...)
479 /* needs to be fixed... va_end needs to be added */
480 snprintf (buffer, sizeof(buffer), "XTND %s", fmt);
481 result = traverse (action, buffer, a, b, c, d);
485 snprintf (buffer, sizeof(buffer), fmt, a, b, c, d);
486 ap = brkstring (buffer, " ", "\n"); /* a hack, i know... */
488 if (!strcasecmp(ap[0], "x-bboards")) { /* XTND "X-BBOARDS group */
489 /* most of these parameters are meaningless under NNTP.
490 * bbc.c was modified to set AKA and LEADERS as appropriate,
491 * the rest are left blank.
495 if (!strcasecmp (ap[0], "archive") && ap[1]) {
496 snprintf (xtnd_name, sizeof(xtnd_name), "%s", ap[1]); /* save the name */
498 xtnd_first = 1; /* setup to fail in pop_stat */
501 if (!strcasecmp (ap[0], "bboards")) {
503 if (ap[1]) { /* XTND "BBOARDS group" */
504 snprintf (xtnd_name, sizeof(xtnd_name), "%s", ap[1]); /* save the name */
505 if (command("GROUP %s", xtnd_name) == NOTOK)
508 /* action must ignore extra args */
509 strncpy (buffer, response, sizeof(buffer));
510 ap = brkstring (response, " ", "\n");/* "211 nart first last g" */
511 xtnd_first = atoi (ap[2]);
512 xtnd_last = atoi (ap[3]);
517 } else { /* XTND "BBOARDS" */
518 return traverse (action, "LIST", a, b, c, d);
521 return NOTOK; /* unknown XTND command */
532 i = command ("QUIT");
549 #if !defined(MPOP) || defined(NNTP)
553 command(const char *fmt, ...)
559 result = vcommand(fmt, ap);
567 vcommand (const char *fmt, va_list ap)
569 char *cp, buffer[BUFSIZ];
571 vsnprintf (buffer, sizeof(buffer), fmt, ap);
574 if ((cp = strchr (buffer, ' ')))
576 fprintf (stderr, "---> %s ********\n", buffer);
582 fprintf (stderr, "---> %s\n", buffer);
585 if (putline (buffer, output) == NOTOK)
588 switch (getline (response, sizeof response, input)) {
591 fprintf (stderr, "<--- %s\n", response);
593 return (*response == '+' ? OK : NOTOK);
595 return (*response < CHAR_ERR ? OK : NOTOK);
601 fprintf (stderr, "%s\n", response);
605 return NOTOK; /* NOTREACHED */
609 #if defined(MPOP) && !defined(NNTP)
617 char buffer[BUFSIZ + TRMLEN];
619 if (getline (buffer, sizeof buffer, input) != OK)
623 fprintf (stderr, "<--- %s\n", response);
625 if (strncmp (buffer, TRM, TRMLEN) == 0) {
626 if (buffer[TRMLEN] == 0)
629 strncpy (response, buffer + TRMLEN, sizeof(response));
632 strncpy (response, buffer, sizeof(response));
639 getline (char *s, int n, FILE *iop)
645 while (--n > 0 && (c = fgetc (iop)) != EOF)
646 if ((*p++ = c) == '\n')
648 if (ferror (iop) && c != EOF) {
649 strncpy (response, "error on connection", sizeof(response));
652 if (c == EOF && p == s) {
653 strncpy (response, "connection closed by foreign host", sizeof(response));
667 putline (char *s, FILE *iop)
669 fprintf (iop, "%s\r\n", s);
672 strncpy (response, "lost connection", sizeof(response));