155682Smarkm/* 2142403Snectar * Copyright (c) 1997-2004 Kungliga Tekniska H�gskolan 355682Smarkm * (Royal Institute of Technology, Stockholm, Sweden). 455682Smarkm * All rights reserved. 555682Smarkm * 655682Smarkm * Redistribution and use in source and binary forms, with or without 755682Smarkm * modification, are permitted provided that the following conditions 855682Smarkm * are met: 955682Smarkm * 1055682Smarkm * 1. Redistributions of source code must retain the above copyright 1155682Smarkm * notice, this list of conditions and the following disclaimer. 1255682Smarkm * 1355682Smarkm * 2. Redistributions in binary form must reproduce the above copyright 1455682Smarkm * notice, this list of conditions and the following disclaimer in the 1555682Smarkm * documentation and/or other materials provided with the distribution. 1655682Smarkm * 1755682Smarkm * 3. Neither the name of the Institute nor the names of its contributors 1855682Smarkm * may be used to endorse or promote products derived from this software 1955682Smarkm * without specific prior written permission. 2055682Smarkm * 2155682Smarkm * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 2255682Smarkm * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2355682Smarkm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2455682Smarkm * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 2555682Smarkm * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2655682Smarkm * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2755682Smarkm * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2855682Smarkm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2955682Smarkm * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3055682Smarkm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3155682Smarkm * SUCH DAMAGE. 3255682Smarkm */ 3355682Smarkm 3455682Smarkm#include "push_locl.h" 35178825SdfrRCSID("$Id: push.c 14850 2005-04-19 18:00:17Z lha $"); 3655682Smarkm 3755682Smarkm#ifdef KRB4 3855682Smarkmstatic int use_v4 = -1; 3955682Smarkm#endif 4055682Smarkm 4155682Smarkm#ifdef KRB5 4255682Smarkmstatic int use_v5 = -1; 4355682Smarkmstatic krb5_context context; 4455682Smarkm#endif 4555682Smarkm 4655682Smarkmstatic char *port_str; 4755682Smarkmstatic int verbose_level; 4855682Smarkmstatic int do_fork; 4955682Smarkmstatic int do_leave; 5055682Smarkmstatic int do_version; 5155682Smarkmstatic int do_help; 5255682Smarkmstatic int do_from; 5355682Smarkmstatic int do_count; 5455682Smarkmstatic char *header_str; 5555682Smarkm 5655682Smarkmstruct getargs args[] = { 5755682Smarkm#ifdef KRB4 5855682Smarkm { "krb4", '4', arg_flag, &use_v4, "Use Kerberos V4", 5955682Smarkm NULL }, 6055682Smarkm#endif 6155682Smarkm#ifdef KRB5 6255682Smarkm { "krb5", '5', arg_flag, &use_v5, "Use Kerberos V5", 6355682Smarkm NULL }, 6455682Smarkm#endif 6555682Smarkm { "verbose",'v', arg_counter, &verbose_level, "Verbose", 6655682Smarkm NULL }, 6755682Smarkm { "fork", 'f', arg_flag, &do_fork, "Fork deleting proc", 6855682Smarkm NULL }, 6955682Smarkm { "leave", 'l', arg_flag, &do_leave, "Leave mail on server", 7055682Smarkm NULL }, 7155682Smarkm { "port", 'p', arg_string, &port_str, "Use this port", 7255682Smarkm "number-or-service" }, 7355682Smarkm { "from", 0, arg_flag, &do_from, "Behave like from", 7455682Smarkm NULL }, 7572445Sassar { "headers", 0, arg_string, &header_str, "Headers to print", NULL }, 7655682Smarkm { "count", 'c', arg_flag, &do_count, "Print number of messages", NULL}, 7755682Smarkm { "version", 0, arg_flag, &do_version, "Print version", 7855682Smarkm NULL }, 7955682Smarkm { "help", 0, arg_flag, &do_help, NULL, 8055682Smarkm NULL } 8155682Smarkm 8255682Smarkm}; 8355682Smarkm 8455682Smarkmstatic void 8555682Smarkmusage (int ret) 8655682Smarkm{ 8755682Smarkm arg_printusage (args, 8855682Smarkm sizeof(args) / sizeof(args[0]), 8955682Smarkm NULL, 9072445Sassar "[[{po:username[@hostname] | hostname[:username]}] ...] " 9155682Smarkm "filename"); 9255682Smarkm exit (ret); 9355682Smarkm} 9455682Smarkm 9555682Smarkmstatic int 9655682Smarkmdo_connect (const char *hostname, int port, int nodelay) 9755682Smarkm{ 9855682Smarkm struct addrinfo *ai, *a; 9955682Smarkm struct addrinfo hints; 10055682Smarkm int error; 10172445Sassar int s = -1; 10255682Smarkm char portstr[NI_MAXSERV]; 10355682Smarkm 10455682Smarkm memset (&hints, 0, sizeof(hints)); 10555682Smarkm hints.ai_socktype = SOCK_STREAM; 10655682Smarkm hints.ai_protocol = IPPROTO_TCP; 10755682Smarkm 10855682Smarkm snprintf (portstr, sizeof(portstr), "%u", ntohs(port)); 10955682Smarkm 11055682Smarkm error = getaddrinfo (hostname, portstr, &hints, &ai); 11155682Smarkm if (error) 11255682Smarkm errx (1, "getaddrinfo(%s): %s", hostname, gai_strerror(error)); 11355682Smarkm 11455682Smarkm for (a = ai; a != NULL; a = a->ai_next) { 11555682Smarkm s = socket (a->ai_family, a->ai_socktype, a->ai_protocol); 11655682Smarkm if (s < 0) 11755682Smarkm continue; 11855682Smarkm if (connect (s, a->ai_addr, a->ai_addrlen) < 0) { 11955682Smarkm warn ("connect(%s)", hostname); 12055682Smarkm close (s); 12155682Smarkm continue; 12255682Smarkm } 12355682Smarkm break; 12455682Smarkm } 12555682Smarkm freeaddrinfo (ai); 12655682Smarkm if (a == NULL) { 12755682Smarkm warnx ("failed to contact %s", hostname); 12855682Smarkm return -1; 12955682Smarkm } 13055682Smarkm 13155682Smarkm if(setsockopt(s, IPPROTO_TCP, TCP_NODELAY, 13255682Smarkm (void *)&nodelay, sizeof(nodelay)) < 0) 13355682Smarkm err (1, "setsockopt TCP_NODELAY"); 13455682Smarkm return s; 13555682Smarkm} 13655682Smarkm 13755682Smarkmtypedef enum { INIT = 0, GREET, USER, PASS, STAT, RETR, TOP, 13855682Smarkm DELE, XDELE, QUIT} pop_state; 13955682Smarkm 140120945Snectarstatic char *pop_state_string[] = { 141120945Snectar "INIT", "GREET", "USER", "PASS", "STAT", "RETR", "TOP", 142120945Snectar "DELE", "XDELE", "QUIT" 143120945Snectar}; 144120945Snectar 14555682Smarkm#define PUSH_BUFSIZ 65536 14655682Smarkm 14755682Smarkm#define STEP 16 14855682Smarkm 14955682Smarkmstruct write_state { 15055682Smarkm struct iovec *iovecs; 15155682Smarkm size_t niovecs, maxiovecs, allociovecs; 15255682Smarkm int fd; 15355682Smarkm}; 15455682Smarkm 15555682Smarkmstatic void 15655682Smarkmwrite_state_init (struct write_state *w, int fd) 15755682Smarkm{ 15855682Smarkm#ifdef UIO_MAXIOV 15955682Smarkm w->maxiovecs = UIO_MAXIOV; 16055682Smarkm#else 16155682Smarkm w->maxiovecs = 16; 16255682Smarkm#endif 16355682Smarkm w->allociovecs = min(STEP, w->maxiovecs); 16455682Smarkm w->niovecs = 0; 16572445Sassar w->iovecs = emalloc(w->allociovecs * sizeof(*w->iovecs)); 16655682Smarkm w->fd = fd; 16755682Smarkm} 16855682Smarkm 16955682Smarkmstatic void 17055682Smarkmwrite_state_add (struct write_state *w, void *v, size_t len) 17155682Smarkm{ 17255682Smarkm if(w->niovecs == w->allociovecs) { 17355682Smarkm if(w->niovecs == w->maxiovecs) { 17455682Smarkm if(writev (w->fd, w->iovecs, w->niovecs) < 0) 17555682Smarkm err(1, "writev"); 17655682Smarkm w->niovecs = 0; 17755682Smarkm } else { 17855682Smarkm w->allociovecs = min(w->allociovecs + STEP, w->maxiovecs); 17972445Sassar w->iovecs = erealloc (w->iovecs, 18072445Sassar w->allociovecs * sizeof(*w->iovecs)); 18155682Smarkm } 18255682Smarkm } 18355682Smarkm w->iovecs[w->niovecs].iov_base = v; 18455682Smarkm w->iovecs[w->niovecs].iov_len = len; 18555682Smarkm ++w->niovecs; 18655682Smarkm} 18755682Smarkm 18855682Smarkmstatic void 18955682Smarkmwrite_state_flush (struct write_state *w) 19055682Smarkm{ 19155682Smarkm if (w->niovecs) { 19255682Smarkm if (writev (w->fd, w->iovecs, w->niovecs) < 0) 19355682Smarkm err (1, "writev"); 19455682Smarkm w->niovecs = 0; 19555682Smarkm } 19655682Smarkm} 19755682Smarkm 19855682Smarkmstatic void 19955682Smarkmwrite_state_destroy (struct write_state *w) 20055682Smarkm{ 20155682Smarkm free (w->iovecs); 20255682Smarkm} 20355682Smarkm 20455682Smarkmstatic int 20555682Smarkmdoit(int s, 20655682Smarkm const char *host, 20755682Smarkm const char *user, 20855682Smarkm const char *outfilename, 20955682Smarkm const char *header_str, 21055682Smarkm int leavep, 21155682Smarkm int verbose, 21255682Smarkm int forkp) 21355682Smarkm{ 21455682Smarkm int ret; 21555682Smarkm char out_buf[PUSH_BUFSIZ]; 21690926Snectar int out_len = 0; 217142403Snectar char *in_buf; 218142403Snectar size_t in_buf_size; 21955682Smarkm size_t in_len = 0; 220142403Snectar char *in_ptr; 22155682Smarkm pop_state state = INIT; 22255682Smarkm unsigned count, bytes; 22355682Smarkm unsigned asked_for = 0, retrieved = 0, asked_deleted = 0, deleted = 0; 22455682Smarkm unsigned sent_xdele = 0; 22555682Smarkm int out_fd; 22655682Smarkm char from_line[128]; 22755682Smarkm size_t from_line_length; 22855682Smarkm time_t now; 22955682Smarkm struct write_state write_state; 23072445Sassar int numheaders = 1; 23172445Sassar char **headers = NULL; 23272445Sassar int i; 23372445Sassar char *tmp = NULL; 23455682Smarkm 235142403Snectar in_buf = emalloc(PUSH_BUFSIZ + 1); 236142403Snectar in_ptr = in_buf; 237142403Snectar in_buf_size = PUSH_BUFSIZ; 238142403Snectar 23955682Smarkm if (do_from) { 24072445Sassar char *tmp2; 24172445Sassar 24272445Sassar tmp2 = tmp = estrdup(header_str); 24372445Sassar 24455682Smarkm out_fd = -1; 24555682Smarkm if (verbose) 24655682Smarkm fprintf (stderr, "%s@%s\n", user, host); 24772445Sassar while (*tmp != '\0') { 24872445Sassar tmp = strchr(tmp, ','); 24972445Sassar if (tmp == NULL) 25072445Sassar break; 25172445Sassar tmp++; 25272445Sassar numheaders++; 25372445Sassar } 25472445Sassar 25572445Sassar headers = emalloc(sizeof(char *) * (numheaders + 1)); 25672445Sassar for (i = 0; i < numheaders; i++) { 25772445Sassar headers[i] = strtok_r(tmp2, ",", &tmp2); 25872445Sassar } 25972445Sassar headers[numheaders] = NULL; 26055682Smarkm } else { 26155682Smarkm out_fd = open(outfilename, O_WRONLY | O_APPEND | O_CREAT, 0666); 26255682Smarkm if (out_fd < 0) 26355682Smarkm err (1, "open %s", outfilename); 26455682Smarkm if (verbose) 26555682Smarkm fprintf (stderr, "%s@%s -> %s\n", user, host, outfilename); 26655682Smarkm } 26755682Smarkm 26855682Smarkm now = time(NULL); 26955682Smarkm from_line_length = snprintf (from_line, sizeof(from_line), 27055682Smarkm "From %s %s", "push", ctime(&now)); 271178825Sdfr if (from_line_length < 0 || from_line_length > sizeof(from_line)) 272178825Sdfr errx (1, "snprintf failed"); 27355682Smarkm 27455682Smarkm out_len = snprintf (out_buf, sizeof(out_buf), 27555682Smarkm "USER %s\r\nPASS hej\r\nSTAT\r\n", 27655682Smarkm user); 277178825Sdfr if (out_len < 0 || out_len > sizeof(out_buf)) 27890926Snectar errx (1, "snprintf failed"); 27955682Smarkm if (net_write (s, out_buf, out_len) != out_len) 28055682Smarkm err (1, "write"); 28155682Smarkm if (verbose > 1) 282120945Snectar fprintf (stderr, "%s", out_buf); 28355682Smarkm 28455682Smarkm if (!do_from) 28555682Smarkm write_state_init (&write_state, out_fd); 28655682Smarkm 28755682Smarkm while(state != QUIT) { 28855682Smarkm fd_set readset, writeset; 28955682Smarkm 29055682Smarkm FD_ZERO(&readset); 29155682Smarkm FD_ZERO(&writeset); 29272445Sassar if (s >= FD_SETSIZE) 29372445Sassar errx (1, "fd too large"); 29455682Smarkm FD_SET(s,&readset); 295120945Snectar 296120945Snectar if (verbose > 1) 297120945Snectar fprintf (stderr, "state: %s count: %d asked_for: %d " 298120945Snectar "retrieved: %d asked_deleted: %d\n", 299120945Snectar pop_state_string[state], 300120945Snectar count, asked_for, retrieved, asked_deleted); 301120945Snectar 30255682Smarkm if (((state == STAT || state == RETR || state == TOP) 30355682Smarkm && asked_for < count) 30455682Smarkm || (state == XDELE && !sent_xdele) 30555682Smarkm || (state == DELE && asked_deleted < count)) 30655682Smarkm FD_SET(s,&writeset); 30755682Smarkm ret = select (s + 1, &readset, &writeset, NULL, NULL); 30855682Smarkm if (ret < 0) { 30955682Smarkm if (errno == EAGAIN) 31055682Smarkm continue; 31155682Smarkm else 31255682Smarkm err (1, "select"); 31355682Smarkm } 31455682Smarkm 31555682Smarkm if (FD_ISSET(s, &readset)) { 31655682Smarkm char *beg, *p; 31755682Smarkm size_t rem; 31855682Smarkm int blank_line = 0; 31955682Smarkm 320142403Snectar if(in_len >= in_buf_size) { 321142403Snectar char *tmp = erealloc(in_buf, in_buf_size + PUSH_BUFSIZ + 1); 322142403Snectar in_ptr = tmp + (in_ptr - in_buf); 323142403Snectar in_buf = tmp; 324142403Snectar in_buf_size += PUSH_BUFSIZ; 325142403Snectar } 326142403Snectar 327142403Snectar ret = read (s, in_ptr, in_buf_size - in_len); 32855682Smarkm if (ret < 0) 32955682Smarkm err (1, "read"); 33055682Smarkm else if (ret == 0) 33155682Smarkm errx (1, "EOF during read"); 33255682Smarkm 33355682Smarkm in_len += ret; 33455682Smarkm in_ptr += ret; 33555682Smarkm *in_ptr = '\0'; 33655682Smarkm 33755682Smarkm beg = in_buf; 33855682Smarkm rem = in_len; 33955682Smarkm while(rem > 1 34055682Smarkm && (p = strstr(beg, "\r\n")) != NULL) { 34155682Smarkm if (state == TOP) { 34255682Smarkm char *copy = beg; 34355682Smarkm 34472445Sassar for (i = 0; i < numheaders; i++) { 34572445Sassar size_t len; 34672445Sassar 34772445Sassar len = min(p - copy + 1, strlen(headers[i])); 34872445Sassar if (strncasecmp(copy, headers[i], len) == 0) { 34972445Sassar fprintf (stdout, "%.*s\n", (int)(p - copy), copy); 35072445Sassar } 35155682Smarkm } 35255682Smarkm if (beg[0] == '.' && beg[1] == '\r' && beg[2] == '\n') { 35372445Sassar if (numheaders > 1) 35472445Sassar fprintf (stdout, "\n"); 35555682Smarkm state = STAT; 35655682Smarkm if (++retrieved == count) { 35755682Smarkm state = QUIT; 35855682Smarkm net_write (s, "QUIT\r\n", 6); 35955682Smarkm if (verbose > 1) 360120945Snectar fprintf (stderr, "QUIT\r\n"); 36155682Smarkm } 36255682Smarkm } 36355682Smarkm rem -= p - beg + 2; 36455682Smarkm beg = p + 2; 36555682Smarkm } else if (state == RETR) { 36655682Smarkm char *copy = beg; 36755682Smarkm if (beg[0] == '.') { 36855682Smarkm if (beg[1] == '\r' && beg[2] == '\n') { 36955682Smarkm if(!blank_line) 37055682Smarkm write_state_add(&write_state, "\n", 1); 37155682Smarkm state = STAT; 37255682Smarkm rem -= p - beg + 2; 37355682Smarkm beg = p + 2; 37455682Smarkm if (++retrieved == count) { 37555682Smarkm write_state_flush (&write_state); 37655682Smarkm if (fsync (out_fd) < 0) 37755682Smarkm err (1, "fsync"); 37855682Smarkm close(out_fd); 37955682Smarkm if (leavep) { 38055682Smarkm state = QUIT; 38155682Smarkm net_write (s, "QUIT\r\n", 6); 38255682Smarkm if (verbose > 1) 383120945Snectar fprintf (stderr, "QUIT\r\n"); 38455682Smarkm } else { 38555682Smarkm if (forkp) { 38655682Smarkm pid_t pid; 38755682Smarkm 38855682Smarkm pid = fork(); 38955682Smarkm if (pid < 0) 39055682Smarkm warn ("fork"); 39155682Smarkm else if(pid != 0) { 39255682Smarkm if(verbose) 39355682Smarkm fprintf (stderr, 39455682Smarkm "(exiting)"); 39555682Smarkm return 0; 39655682Smarkm } 39755682Smarkm } 39855682Smarkm 39955682Smarkm state = XDELE; 40055682Smarkm if (verbose) 40155682Smarkm fprintf (stderr, "deleting... "); 40255682Smarkm } 40355682Smarkm } 40455682Smarkm continue; 40555682Smarkm } else 40655682Smarkm ++copy; 40755682Smarkm } 40855682Smarkm *p = '\n'; 40955682Smarkm if(blank_line && 41055682Smarkm strncmp(copy, "From ", min(p - copy + 1, 5)) == 0) 41155682Smarkm write_state_add(&write_state, ">", 1); 41255682Smarkm write_state_add(&write_state, copy, p - copy + 1); 41355682Smarkm blank_line = (*copy == '\n'); 41455682Smarkm rem -= p - beg + 2; 41555682Smarkm beg = p + 2; 41655682Smarkm } else if (rem >= 3 && strncmp (beg, "+OK", 3) == 0) { 41755682Smarkm if (state == STAT) { 41855682Smarkm if (!do_from) 41955682Smarkm write_state_add(&write_state, 42055682Smarkm from_line, from_line_length); 42155682Smarkm blank_line = 0; 42255682Smarkm if (do_from) 42355682Smarkm state = TOP; 42455682Smarkm else 42555682Smarkm state = RETR; 42655682Smarkm } else if (state == XDELE) { 42755682Smarkm state = QUIT; 42855682Smarkm net_write (s, "QUIT\r\n", 6); 42955682Smarkm if (verbose > 1) 430120945Snectar fprintf (stderr, "QUIT\r\n"); 43155682Smarkm break; 43255682Smarkm } else if (state == DELE) { 43355682Smarkm if (++deleted == count) { 43455682Smarkm state = QUIT; 43555682Smarkm net_write (s, "QUIT\r\n", 6); 43655682Smarkm if (verbose > 1) 437120945Snectar fprintf (stderr, "QUIT\r\n"); 43855682Smarkm break; 43955682Smarkm } 44055682Smarkm } else if (++state == STAT) { 44155682Smarkm if(sscanf (beg + 4, "%u %u", &count, &bytes) != 2) 44255682Smarkm errx(1, "Bad STAT-line: %.*s", (int)(p - beg), beg); 44355682Smarkm if (verbose) { 44455682Smarkm fprintf (stderr, "%u message(s) (%u bytes). " 44555682Smarkm "fetching... ", 44655682Smarkm count, bytes); 44755682Smarkm if (do_from) 44855682Smarkm fprintf (stderr, "\n"); 44955682Smarkm } else if (do_count) { 45055682Smarkm fprintf (stderr, "%u message(s) (%u bytes).\n", 45155682Smarkm count, bytes); 45255682Smarkm } 45355682Smarkm if (count == 0) { 45455682Smarkm state = QUIT; 45555682Smarkm net_write (s, "QUIT\r\n", 6); 45655682Smarkm if (verbose > 1) 457120945Snectar fprintf (stderr, "QUIT\r\n"); 45855682Smarkm break; 45955682Smarkm } 46055682Smarkm } 46155682Smarkm 46255682Smarkm rem -= p - beg + 2; 46355682Smarkm beg = p + 2; 46455682Smarkm } else { 46555682Smarkm if(state == XDELE) { 46655682Smarkm state = DELE; 46755682Smarkm rem -= p - beg + 2; 46855682Smarkm beg = p + 2; 46955682Smarkm } else 47055682Smarkm errx (1, "Bad response: %.*s", (int)(p - beg), beg); 47155682Smarkm } 47255682Smarkm } 47355682Smarkm if (!do_from) 47455682Smarkm write_state_flush (&write_state); 47555682Smarkm 47655682Smarkm memmove (in_buf, beg, rem); 47755682Smarkm in_len = rem; 47855682Smarkm in_ptr = in_buf + rem; 47955682Smarkm } 48055682Smarkm if (FD_ISSET(s, &writeset)) { 48155682Smarkm if ((state == STAT && !do_from) || state == RETR) 48255682Smarkm out_len = snprintf (out_buf, sizeof(out_buf), 48355682Smarkm "RETR %u\r\n", ++asked_for); 48455682Smarkm else if ((state == STAT && do_from) || state == TOP) 48555682Smarkm out_len = snprintf (out_buf, sizeof(out_buf), 48655682Smarkm "TOP %u 0\r\n", ++asked_for); 48755682Smarkm else if(state == XDELE) { 48855682Smarkm out_len = snprintf(out_buf, sizeof(out_buf), 48955682Smarkm "XDELE %u %u\r\n", 1, count); 49055682Smarkm sent_xdele++; 49155682Smarkm } 49255682Smarkm else if(state == DELE) 49355682Smarkm out_len = snprintf (out_buf, sizeof(out_buf), 49455682Smarkm "DELE %u\r\n", ++asked_deleted); 495178825Sdfr if (out_len < 0 || out_len > sizeof(out_buf)) 49690926Snectar errx (1, "snprintf failed"); 49755682Smarkm if (net_write (s, out_buf, out_len) != out_len) 49855682Smarkm err (1, "write"); 49955682Smarkm if (verbose > 1) 500120945Snectar fprintf (stderr, "%s", out_buf); 50155682Smarkm } 50255682Smarkm } 50355682Smarkm if (verbose) 50455682Smarkm fprintf (stderr, "Done\n"); 50572445Sassar if (do_from) { 50672445Sassar free (tmp); 50772445Sassar free (headers); 50872445Sassar } else { 50955682Smarkm write_state_destroy (&write_state); 51072445Sassar } 51155682Smarkm return 0; 51255682Smarkm} 51355682Smarkm 51455682Smarkm#ifdef KRB5 51555682Smarkmstatic int 51655682Smarkmdo_v5 (const char *host, 51755682Smarkm int port, 51855682Smarkm const char *user, 51955682Smarkm const char *filename, 52055682Smarkm const char *header_str, 52155682Smarkm int leavep, 52255682Smarkm int verbose, 52355682Smarkm int forkp) 52455682Smarkm{ 52555682Smarkm krb5_error_code ret; 52655682Smarkm krb5_auth_context auth_context = NULL; 52755682Smarkm krb5_principal server; 52855682Smarkm int s; 52955682Smarkm 53055682Smarkm s = do_connect (host, port, 1); 53155682Smarkm if (s < 0) 53255682Smarkm return 1; 53355682Smarkm 53455682Smarkm ret = krb5_sname_to_principal (context, 53555682Smarkm host, 53655682Smarkm "pop", 53755682Smarkm KRB5_NT_SRV_HST, 53855682Smarkm &server); 53955682Smarkm if (ret) { 54055682Smarkm warnx ("krb5_sname_to_principal: %s", 54155682Smarkm krb5_get_err_text (context, ret)); 54255682Smarkm return 1; 54355682Smarkm } 54455682Smarkm 54555682Smarkm ret = krb5_sendauth (context, 54655682Smarkm &auth_context, 54755682Smarkm &s, 54855682Smarkm "KPOPV1.0", 54955682Smarkm NULL, 55055682Smarkm server, 55155682Smarkm 0, 55255682Smarkm NULL, 55355682Smarkm NULL, 55455682Smarkm NULL, 55555682Smarkm NULL, 55655682Smarkm NULL, 55755682Smarkm NULL); 55855682Smarkm krb5_free_principal (context, server); 55955682Smarkm if (ret) { 56055682Smarkm warnx ("krb5_sendauth: %s", 56155682Smarkm krb5_get_err_text (context, ret)); 56255682Smarkm return 1; 56355682Smarkm } 56455682Smarkm return doit (s, host, user, filename, header_str, leavep, verbose, forkp); 56555682Smarkm} 56655682Smarkm#endif 56755682Smarkm 56855682Smarkm#ifdef KRB4 56955682Smarkmstatic int 57055682Smarkmdo_v4 (const char *host, 57155682Smarkm int port, 57255682Smarkm const char *user, 57355682Smarkm const char *filename, 57455682Smarkm const char *header_str, 57555682Smarkm int leavep, 57655682Smarkm int verbose, 57755682Smarkm int forkp) 57855682Smarkm{ 57955682Smarkm KTEXT_ST ticket; 58055682Smarkm MSG_DAT msg_data; 58155682Smarkm CREDENTIALS cred; 58255682Smarkm des_key_schedule sched; 58355682Smarkm int s; 58455682Smarkm int ret; 58555682Smarkm 58655682Smarkm s = do_connect (host, port, 1); 58755682Smarkm if (s < 0) 58855682Smarkm return 1; 58955682Smarkm ret = krb_sendauth(0, 59055682Smarkm s, 59155682Smarkm &ticket, 59255682Smarkm "pop", 59355682Smarkm (char *)host, 59455682Smarkm krb_realmofhost(host), 59555682Smarkm getpid(), 59655682Smarkm &msg_data, 59755682Smarkm &cred, 59855682Smarkm sched, 59955682Smarkm NULL, 60055682Smarkm NULL, 60155682Smarkm "KPOPV0.1"); 60255682Smarkm if(ret) { 60355682Smarkm warnx("krb_sendauth: %s", krb_get_err_text(ret)); 60455682Smarkm return 1; 60555682Smarkm } 60655682Smarkm return doit (s, host, user, filename, header_str, leavep, verbose, forkp); 60755682Smarkm} 60855682Smarkm#endif /* KRB4 */ 60955682Smarkm 61055682Smarkm#ifdef HESIOD 61155682Smarkm 61255682Smarkm#ifdef HESIOD_INTERFACES 61355682Smarkm 61455682Smarkmstatic char * 61555682Smarkmhesiod_get_pobox (const char **user) 61655682Smarkm{ 61755682Smarkm void *context; 61855682Smarkm struct hesiod_postoffice *hpo; 61955682Smarkm char *ret = NULL; 62055682Smarkm 62155682Smarkm if(hesiod_init (&context) != 0) 62255682Smarkm err (1, "hesiod_init"); 62355682Smarkm 62455682Smarkm hpo = hesiod_getmailhost (context, *user); 62555682Smarkm if (hpo == NULL) { 62655682Smarkm warn ("hesiod_getmailhost %s", *user); 62755682Smarkm } else { 62855682Smarkm if (strcasecmp(hpo->hesiod_po_type, "pop") != 0) 62955682Smarkm errx (1, "Unsupported po type %s", hpo->hesiod_po_type); 63055682Smarkm 63172445Sassar ret = estrdup(hpo->hesiod_po_host); 63272445Sassar *user = estrdup(hpo->hesiod_po_name); 63355682Smarkm hesiod_free_postoffice (context, hpo); 63455682Smarkm } 63555682Smarkm hesiod_end (context); 63655682Smarkm return ret; 63755682Smarkm} 63855682Smarkm 63955682Smarkm#else /* !HESIOD_INTERFACES */ 64055682Smarkm 64155682Smarkmstatic char * 64255682Smarkmhesiod_get_pobox (const char **user) 64355682Smarkm{ 64455682Smarkm char *ret = NULL; 64555682Smarkm struct hes_postoffice *hpo; 64655682Smarkm 64755682Smarkm hpo = hes_getmailhost (*user); 64855682Smarkm if (hpo == NULL) { 64955682Smarkm warn ("hes_getmailhost %s", *user); 65055682Smarkm } else { 65155682Smarkm if (strcasecmp(hpo->po_type, "pop") != 0) 65255682Smarkm errx (1, "Unsupported po type %s", hpo->po_type); 65355682Smarkm 65472445Sassar ret = estrdup(hpo->po_host); 65572445Sassar *user = estrdup(hpo->po_name); 65655682Smarkm } 65755682Smarkm return ret; 65855682Smarkm} 65955682Smarkm 66055682Smarkm#endif /* HESIOD_INTERFACES */ 66155682Smarkm 66255682Smarkm#endif /* HESIOD */ 66355682Smarkm 66455682Smarkmstatic char * 66555682Smarkmget_pobox (const char **user) 66655682Smarkm{ 66755682Smarkm char *ret = NULL; 66855682Smarkm 66955682Smarkm#ifdef HESIOD 67055682Smarkm ret = hesiod_get_pobox (user); 67155682Smarkm#endif 67255682Smarkm 67355682Smarkm if (ret == NULL) 67455682Smarkm ret = getenv("MAILHOST"); 67555682Smarkm if (ret == NULL) 67655682Smarkm errx (1, "MAILHOST not set"); 67755682Smarkm return ret; 67855682Smarkm} 67955682Smarkm 68055682Smarkmstatic void 68155682Smarkmparse_pobox (char *a0, const char **host, const char **user) 68255682Smarkm{ 68355682Smarkm const char *h, *u; 68455682Smarkm char *p; 68555682Smarkm int po = 0; 68655682Smarkm 68755682Smarkm if (a0 == NULL) { 68855682Smarkm 68955682Smarkm *user = getenv ("USERNAME"); 69055682Smarkm if (*user == NULL) { 69155682Smarkm struct passwd *pwd = getpwuid (getuid ()); 69255682Smarkm 69355682Smarkm if (pwd == NULL) 69455682Smarkm errx (1, "Who are you?"); 69572445Sassar *user = estrdup (pwd->pw_name); 69655682Smarkm } 69755682Smarkm *host = get_pobox (user); 69855682Smarkm return; 69955682Smarkm } 70055682Smarkm 70155682Smarkm /* if the specification starts with po:, remember this information */ 70255682Smarkm if(strncmp(a0, "po:", 3) == 0) { 70355682Smarkm a0 += 3; 70455682Smarkm po++; 70555682Smarkm } 70655682Smarkm /* if there is an `@', the hostname is after it, otherwise at the 70755682Smarkm beginning of the string */ 70855682Smarkm p = strchr(a0, '@'); 70955682Smarkm if(p != NULL) { 71055682Smarkm *p++ = '\0'; 71155682Smarkm h = p; 71255682Smarkm } else { 71355682Smarkm h = a0; 71455682Smarkm } 71555682Smarkm /* if there is a `:', the username comes before it, otherwise at 71655682Smarkm the beginning of the string */ 71755682Smarkm p = strchr(a0, ':'); 71855682Smarkm if(p != NULL) { 71955682Smarkm *p++ = '\0'; 72055682Smarkm u = p; 72155682Smarkm } else { 72255682Smarkm u = a0; 72355682Smarkm } 72455682Smarkm if(h == u) { 72555682Smarkm /* some inconsistent compatibility with various mailers */ 72655682Smarkm if(po) { 72755682Smarkm h = get_pobox (&u); 72855682Smarkm } else { 72955682Smarkm u = get_default_username (); 73055682Smarkm if (u == NULL) 73155682Smarkm errx (1, "Who are you?"); 73255682Smarkm } 73355682Smarkm } 73455682Smarkm *host = h; 73555682Smarkm *user = u; 73655682Smarkm} 73755682Smarkm 73855682Smarkmint 73955682Smarkmmain(int argc, char **argv) 74055682Smarkm{ 74155682Smarkm int port = 0; 74255682Smarkm int optind = 0; 74355682Smarkm int ret = 1; 74455682Smarkm const char *host, *user, *filename = NULL; 74555682Smarkm char *pobox = NULL; 74655682Smarkm 74778527Sassar setprogname (argv[0]); 74855682Smarkm 74955682Smarkm#ifdef KRB5 75072445Sassar { 75172445Sassar krb5_error_code ret; 75272445Sassar 75372445Sassar ret = krb5_init_context (&context); 75472445Sassar if (ret) 75572445Sassar errx (1, "krb5_init_context failed: %d", ret); 75672445Sassar } 75755682Smarkm#endif 75855682Smarkm 75955682Smarkm if (getarg (args, sizeof(args) / sizeof(args[0]), argc, argv, 76055682Smarkm &optind)) 76155682Smarkm usage (1); 76255682Smarkm 76355682Smarkm argc -= optind; 76455682Smarkm argv += optind; 76555682Smarkm 76655682Smarkm#if defined(KRB4) && defined(KRB5) 76755682Smarkm if(use_v4 == -1 && use_v5 == 1) 76855682Smarkm use_v4 = 0; 76955682Smarkm if(use_v5 == -1 && use_v4 == 1) 77055682Smarkm use_v5 = 0; 77155682Smarkm#endif 77255682Smarkm 77355682Smarkm if (do_help) 77455682Smarkm usage (0); 77555682Smarkm 77655682Smarkm if (do_version) { 77755682Smarkm print_version(NULL); 77855682Smarkm return 0; 77955682Smarkm } 78055682Smarkm 78155682Smarkm if (do_from && header_str == NULL) 78255682Smarkm header_str = "From:"; 78355682Smarkm else if (header_str != NULL) 78455682Smarkm do_from = 1; 78555682Smarkm 78655682Smarkm if (do_from) { 78755682Smarkm if (argc == 0) 78855682Smarkm pobox = NULL; 78955682Smarkm else if (argc == 1) 79055682Smarkm pobox = argv[0]; 79155682Smarkm else 79255682Smarkm usage (1); 79355682Smarkm } else { 79455682Smarkm if (argc == 1) { 79555682Smarkm filename = argv[0]; 79655682Smarkm pobox = NULL; 79755682Smarkm } else if (argc == 2) { 79855682Smarkm filename = argv[1]; 79955682Smarkm pobox = argv[0]; 80055682Smarkm } else 80155682Smarkm usage (1); 80255682Smarkm } 80355682Smarkm 80455682Smarkm if (port_str) { 80555682Smarkm struct servent *s = roken_getservbyname (port_str, "tcp"); 80655682Smarkm 80755682Smarkm if (s) 80855682Smarkm port = s->s_port; 80955682Smarkm else { 81055682Smarkm char *ptr; 81155682Smarkm 81255682Smarkm port = strtol (port_str, &ptr, 10); 81355682Smarkm if (port == 0 && ptr == port_str) 81455682Smarkm errx (1, "Bad port `%s'", port_str); 81555682Smarkm port = htons(port); 81655682Smarkm } 81755682Smarkm } 81855682Smarkm if (port == 0) { 81955682Smarkm#ifdef KRB5 82055682Smarkm port = krb5_getportbyname (context, "kpop", "tcp", 1109); 82155682Smarkm#elif defined(KRB4) 82255682Smarkm port = k_getportbyname ("kpop", "tcp", htons(1109)); 82355682Smarkm#else 82455682Smarkm#error must define KRB4 or KRB5 82555682Smarkm#endif 82655682Smarkm } 82755682Smarkm 82855682Smarkm parse_pobox (pobox, &host, &user); 82955682Smarkm 83055682Smarkm#ifdef KRB5 83155682Smarkm if (ret && use_v5) { 83255682Smarkm ret = do_v5 (host, port, user, filename, header_str, 83355682Smarkm do_leave, verbose_level, do_fork); 83455682Smarkm } 83555682Smarkm#endif 83655682Smarkm 83755682Smarkm#ifdef KRB4 83855682Smarkm if (ret && use_v4) { 83955682Smarkm ret = do_v4 (host, port, user, filename, header_str, 84055682Smarkm do_leave, verbose_level, do_fork); 84155682Smarkm } 84255682Smarkm#endif /* KRB4 */ 84355682Smarkm return ret; 84455682Smarkm} 845