push.c revision 142403
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" 35142403SnectarRCSID("$Id: push.c,v 1.47.2.1 2004/06/21 10:54:46 lha Exp $"); 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)); 27155682Smarkm 27255682Smarkm out_len = snprintf (out_buf, sizeof(out_buf), 27355682Smarkm "USER %s\r\nPASS hej\r\nSTAT\r\n", 27455682Smarkm user); 27590926Snectar if (out_len < 0) 27690926Snectar errx (1, "snprintf failed"); 27755682Smarkm if (net_write (s, out_buf, out_len) != out_len) 27855682Smarkm err (1, "write"); 27955682Smarkm if (verbose > 1) 280120945Snectar fprintf (stderr, "%s", out_buf); 28155682Smarkm 28255682Smarkm if (!do_from) 28355682Smarkm write_state_init (&write_state, out_fd); 28455682Smarkm 28555682Smarkm while(state != QUIT) { 28655682Smarkm fd_set readset, writeset; 28755682Smarkm 28855682Smarkm FD_ZERO(&readset); 28955682Smarkm FD_ZERO(&writeset); 29072445Sassar if (s >= FD_SETSIZE) 29172445Sassar errx (1, "fd too large"); 29255682Smarkm FD_SET(s,&readset); 293120945Snectar 294120945Snectar if (verbose > 1) 295120945Snectar fprintf (stderr, "state: %s count: %d asked_for: %d " 296120945Snectar "retrieved: %d asked_deleted: %d\n", 297120945Snectar pop_state_string[state], 298120945Snectar count, asked_for, retrieved, asked_deleted); 299120945Snectar 30055682Smarkm if (((state == STAT || state == RETR || state == TOP) 30155682Smarkm && asked_for < count) 30255682Smarkm || (state == XDELE && !sent_xdele) 30355682Smarkm || (state == DELE && asked_deleted < count)) 30455682Smarkm FD_SET(s,&writeset); 30555682Smarkm ret = select (s + 1, &readset, &writeset, NULL, NULL); 30655682Smarkm if (ret < 0) { 30755682Smarkm if (errno == EAGAIN) 30855682Smarkm continue; 30955682Smarkm else 31055682Smarkm err (1, "select"); 31155682Smarkm } 31255682Smarkm 31355682Smarkm if (FD_ISSET(s, &readset)) { 31455682Smarkm char *beg, *p; 31555682Smarkm size_t rem; 31655682Smarkm int blank_line = 0; 31755682Smarkm 318142403Snectar if(in_len >= in_buf_size) { 319142403Snectar char *tmp = erealloc(in_buf, in_buf_size + PUSH_BUFSIZ + 1); 320142403Snectar in_ptr = tmp + (in_ptr - in_buf); 321142403Snectar in_buf = tmp; 322142403Snectar in_buf_size += PUSH_BUFSIZ; 323142403Snectar } 324142403Snectar 325142403Snectar ret = read (s, in_ptr, in_buf_size - in_len); 32655682Smarkm if (ret < 0) 32755682Smarkm err (1, "read"); 32855682Smarkm else if (ret == 0) 32955682Smarkm errx (1, "EOF during read"); 33055682Smarkm 33155682Smarkm in_len += ret; 33255682Smarkm in_ptr += ret; 33355682Smarkm *in_ptr = '\0'; 33455682Smarkm 33555682Smarkm beg = in_buf; 33655682Smarkm rem = in_len; 33755682Smarkm while(rem > 1 33855682Smarkm && (p = strstr(beg, "\r\n")) != NULL) { 33955682Smarkm if (state == TOP) { 34055682Smarkm char *copy = beg; 34155682Smarkm 34272445Sassar for (i = 0; i < numheaders; i++) { 34372445Sassar size_t len; 34472445Sassar 34572445Sassar len = min(p - copy + 1, strlen(headers[i])); 34672445Sassar if (strncasecmp(copy, headers[i], len) == 0) { 34772445Sassar fprintf (stdout, "%.*s\n", (int)(p - copy), copy); 34872445Sassar } 34955682Smarkm } 35055682Smarkm if (beg[0] == '.' && beg[1] == '\r' && beg[2] == '\n') { 35172445Sassar if (numheaders > 1) 35272445Sassar fprintf (stdout, "\n"); 35355682Smarkm state = STAT; 35455682Smarkm if (++retrieved == count) { 35555682Smarkm state = QUIT; 35655682Smarkm net_write (s, "QUIT\r\n", 6); 35755682Smarkm if (verbose > 1) 358120945Snectar fprintf (stderr, "QUIT\r\n"); 35955682Smarkm } 36055682Smarkm } 36155682Smarkm rem -= p - beg + 2; 36255682Smarkm beg = p + 2; 36355682Smarkm } else if (state == RETR) { 36455682Smarkm char *copy = beg; 36555682Smarkm if (beg[0] == '.') { 36655682Smarkm if (beg[1] == '\r' && beg[2] == '\n') { 36755682Smarkm if(!blank_line) 36855682Smarkm write_state_add(&write_state, "\n", 1); 36955682Smarkm state = STAT; 37055682Smarkm rem -= p - beg + 2; 37155682Smarkm beg = p + 2; 37255682Smarkm if (++retrieved == count) { 37355682Smarkm write_state_flush (&write_state); 37455682Smarkm if (fsync (out_fd) < 0) 37555682Smarkm err (1, "fsync"); 37655682Smarkm close(out_fd); 37755682Smarkm if (leavep) { 37855682Smarkm state = QUIT; 37955682Smarkm net_write (s, "QUIT\r\n", 6); 38055682Smarkm if (verbose > 1) 381120945Snectar fprintf (stderr, "QUIT\r\n"); 38255682Smarkm } else { 38355682Smarkm if (forkp) { 38455682Smarkm pid_t pid; 38555682Smarkm 38655682Smarkm pid = fork(); 38755682Smarkm if (pid < 0) 38855682Smarkm warn ("fork"); 38955682Smarkm else if(pid != 0) { 39055682Smarkm if(verbose) 39155682Smarkm fprintf (stderr, 39255682Smarkm "(exiting)"); 39355682Smarkm return 0; 39455682Smarkm } 39555682Smarkm } 39655682Smarkm 39755682Smarkm state = XDELE; 39855682Smarkm if (verbose) 39955682Smarkm fprintf (stderr, "deleting... "); 40055682Smarkm } 40155682Smarkm } 40255682Smarkm continue; 40355682Smarkm } else 40455682Smarkm ++copy; 40555682Smarkm } 40655682Smarkm *p = '\n'; 40755682Smarkm if(blank_line && 40855682Smarkm strncmp(copy, "From ", min(p - copy + 1, 5)) == 0) 40955682Smarkm write_state_add(&write_state, ">", 1); 41055682Smarkm write_state_add(&write_state, copy, p - copy + 1); 41155682Smarkm blank_line = (*copy == '\n'); 41255682Smarkm rem -= p - beg + 2; 41355682Smarkm beg = p + 2; 41455682Smarkm } else if (rem >= 3 && strncmp (beg, "+OK", 3) == 0) { 41555682Smarkm if (state == STAT) { 41655682Smarkm if (!do_from) 41755682Smarkm write_state_add(&write_state, 41855682Smarkm from_line, from_line_length); 41955682Smarkm blank_line = 0; 42055682Smarkm if (do_from) 42155682Smarkm state = TOP; 42255682Smarkm else 42355682Smarkm state = RETR; 42455682Smarkm } else if (state == XDELE) { 42555682Smarkm state = QUIT; 42655682Smarkm net_write (s, "QUIT\r\n", 6); 42755682Smarkm if (verbose > 1) 428120945Snectar fprintf (stderr, "QUIT\r\n"); 42955682Smarkm break; 43055682Smarkm } else if (state == DELE) { 43155682Smarkm if (++deleted == count) { 43255682Smarkm state = QUIT; 43355682Smarkm net_write (s, "QUIT\r\n", 6); 43455682Smarkm if (verbose > 1) 435120945Snectar fprintf (stderr, "QUIT\r\n"); 43655682Smarkm break; 43755682Smarkm } 43855682Smarkm } else if (++state == STAT) { 43955682Smarkm if(sscanf (beg + 4, "%u %u", &count, &bytes) != 2) 44055682Smarkm errx(1, "Bad STAT-line: %.*s", (int)(p - beg), beg); 44155682Smarkm if (verbose) { 44255682Smarkm fprintf (stderr, "%u message(s) (%u bytes). " 44355682Smarkm "fetching... ", 44455682Smarkm count, bytes); 44555682Smarkm if (do_from) 44655682Smarkm fprintf (stderr, "\n"); 44755682Smarkm } else if (do_count) { 44855682Smarkm fprintf (stderr, "%u message(s) (%u bytes).\n", 44955682Smarkm count, bytes); 45055682Smarkm } 45155682Smarkm if (count == 0) { 45255682Smarkm state = QUIT; 45355682Smarkm net_write (s, "QUIT\r\n", 6); 45455682Smarkm if (verbose > 1) 455120945Snectar fprintf (stderr, "QUIT\r\n"); 45655682Smarkm break; 45755682Smarkm } 45855682Smarkm } 45955682Smarkm 46055682Smarkm rem -= p - beg + 2; 46155682Smarkm beg = p + 2; 46255682Smarkm } else { 46355682Smarkm if(state == XDELE) { 46455682Smarkm state = DELE; 46555682Smarkm rem -= p - beg + 2; 46655682Smarkm beg = p + 2; 46755682Smarkm } else 46855682Smarkm errx (1, "Bad response: %.*s", (int)(p - beg), beg); 46955682Smarkm } 47055682Smarkm } 47155682Smarkm if (!do_from) 47255682Smarkm write_state_flush (&write_state); 47355682Smarkm 47455682Smarkm memmove (in_buf, beg, rem); 47555682Smarkm in_len = rem; 47655682Smarkm in_ptr = in_buf + rem; 47755682Smarkm } 47855682Smarkm if (FD_ISSET(s, &writeset)) { 47955682Smarkm if ((state == STAT && !do_from) || state == RETR) 48055682Smarkm out_len = snprintf (out_buf, sizeof(out_buf), 48155682Smarkm "RETR %u\r\n", ++asked_for); 48255682Smarkm else if ((state == STAT && do_from) || state == TOP) 48355682Smarkm out_len = snprintf (out_buf, sizeof(out_buf), 48455682Smarkm "TOP %u 0\r\n", ++asked_for); 48555682Smarkm else if(state == XDELE) { 48655682Smarkm out_len = snprintf(out_buf, sizeof(out_buf), 48755682Smarkm "XDELE %u %u\r\n", 1, count); 48855682Smarkm sent_xdele++; 48955682Smarkm } 49055682Smarkm else if(state == DELE) 49155682Smarkm out_len = snprintf (out_buf, sizeof(out_buf), 49255682Smarkm "DELE %u\r\n", ++asked_deleted); 49390926Snectar if (out_len < 0) 49490926Snectar errx (1, "snprintf failed"); 49555682Smarkm if (net_write (s, out_buf, out_len) != out_len) 49655682Smarkm err (1, "write"); 49755682Smarkm if (verbose > 1) 498120945Snectar fprintf (stderr, "%s", out_buf); 49955682Smarkm } 50055682Smarkm } 50155682Smarkm if (verbose) 50255682Smarkm fprintf (stderr, "Done\n"); 50372445Sassar if (do_from) { 50472445Sassar free (tmp); 50572445Sassar free (headers); 50672445Sassar } else { 50755682Smarkm write_state_destroy (&write_state); 50872445Sassar } 50955682Smarkm return 0; 51055682Smarkm} 51155682Smarkm 51255682Smarkm#ifdef KRB5 51355682Smarkmstatic int 51455682Smarkmdo_v5 (const char *host, 51555682Smarkm int port, 51655682Smarkm const char *user, 51755682Smarkm const char *filename, 51855682Smarkm const char *header_str, 51955682Smarkm int leavep, 52055682Smarkm int verbose, 52155682Smarkm int forkp) 52255682Smarkm{ 52355682Smarkm krb5_error_code ret; 52455682Smarkm krb5_auth_context auth_context = NULL; 52555682Smarkm krb5_principal server; 52655682Smarkm int s; 52755682Smarkm 52855682Smarkm s = do_connect (host, port, 1); 52955682Smarkm if (s < 0) 53055682Smarkm return 1; 53155682Smarkm 53255682Smarkm ret = krb5_sname_to_principal (context, 53355682Smarkm host, 53455682Smarkm "pop", 53555682Smarkm KRB5_NT_SRV_HST, 53655682Smarkm &server); 53755682Smarkm if (ret) { 53855682Smarkm warnx ("krb5_sname_to_principal: %s", 53955682Smarkm krb5_get_err_text (context, ret)); 54055682Smarkm return 1; 54155682Smarkm } 54255682Smarkm 54355682Smarkm ret = krb5_sendauth (context, 54455682Smarkm &auth_context, 54555682Smarkm &s, 54655682Smarkm "KPOPV1.0", 54755682Smarkm NULL, 54855682Smarkm server, 54955682Smarkm 0, 55055682Smarkm NULL, 55155682Smarkm NULL, 55255682Smarkm NULL, 55355682Smarkm NULL, 55455682Smarkm NULL, 55555682Smarkm NULL); 55655682Smarkm krb5_free_principal (context, server); 55755682Smarkm if (ret) { 55855682Smarkm warnx ("krb5_sendauth: %s", 55955682Smarkm krb5_get_err_text (context, ret)); 56055682Smarkm return 1; 56155682Smarkm } 56255682Smarkm return doit (s, host, user, filename, header_str, leavep, verbose, forkp); 56355682Smarkm} 56455682Smarkm#endif 56555682Smarkm 56655682Smarkm#ifdef KRB4 56755682Smarkmstatic int 56855682Smarkmdo_v4 (const char *host, 56955682Smarkm int port, 57055682Smarkm const char *user, 57155682Smarkm const char *filename, 57255682Smarkm const char *header_str, 57355682Smarkm int leavep, 57455682Smarkm int verbose, 57555682Smarkm int forkp) 57655682Smarkm{ 57755682Smarkm KTEXT_ST ticket; 57855682Smarkm MSG_DAT msg_data; 57955682Smarkm CREDENTIALS cred; 58055682Smarkm des_key_schedule sched; 58155682Smarkm int s; 58255682Smarkm int ret; 58355682Smarkm 58455682Smarkm s = do_connect (host, port, 1); 58555682Smarkm if (s < 0) 58655682Smarkm return 1; 58755682Smarkm ret = krb_sendauth(0, 58855682Smarkm s, 58955682Smarkm &ticket, 59055682Smarkm "pop", 59155682Smarkm (char *)host, 59255682Smarkm krb_realmofhost(host), 59355682Smarkm getpid(), 59455682Smarkm &msg_data, 59555682Smarkm &cred, 59655682Smarkm sched, 59755682Smarkm NULL, 59855682Smarkm NULL, 59955682Smarkm "KPOPV0.1"); 60055682Smarkm if(ret) { 60155682Smarkm warnx("krb_sendauth: %s", krb_get_err_text(ret)); 60255682Smarkm return 1; 60355682Smarkm } 60455682Smarkm return doit (s, host, user, filename, header_str, leavep, verbose, forkp); 60555682Smarkm} 60655682Smarkm#endif /* KRB4 */ 60755682Smarkm 60855682Smarkm#ifdef HESIOD 60955682Smarkm 61055682Smarkm#ifdef HESIOD_INTERFACES 61155682Smarkm 61255682Smarkmstatic char * 61355682Smarkmhesiod_get_pobox (const char **user) 61455682Smarkm{ 61555682Smarkm void *context; 61655682Smarkm struct hesiod_postoffice *hpo; 61755682Smarkm char *ret = NULL; 61855682Smarkm 61955682Smarkm if(hesiod_init (&context) != 0) 62055682Smarkm err (1, "hesiod_init"); 62155682Smarkm 62255682Smarkm hpo = hesiod_getmailhost (context, *user); 62355682Smarkm if (hpo == NULL) { 62455682Smarkm warn ("hesiod_getmailhost %s", *user); 62555682Smarkm } else { 62655682Smarkm if (strcasecmp(hpo->hesiod_po_type, "pop") != 0) 62755682Smarkm errx (1, "Unsupported po type %s", hpo->hesiod_po_type); 62855682Smarkm 62972445Sassar ret = estrdup(hpo->hesiod_po_host); 63072445Sassar *user = estrdup(hpo->hesiod_po_name); 63155682Smarkm hesiod_free_postoffice (context, hpo); 63255682Smarkm } 63355682Smarkm hesiod_end (context); 63455682Smarkm return ret; 63555682Smarkm} 63655682Smarkm 63755682Smarkm#else /* !HESIOD_INTERFACES */ 63855682Smarkm 63955682Smarkmstatic char * 64055682Smarkmhesiod_get_pobox (const char **user) 64155682Smarkm{ 64255682Smarkm char *ret = NULL; 64355682Smarkm struct hes_postoffice *hpo; 64455682Smarkm 64555682Smarkm hpo = hes_getmailhost (*user); 64655682Smarkm if (hpo == NULL) { 64755682Smarkm warn ("hes_getmailhost %s", *user); 64855682Smarkm } else { 64955682Smarkm if (strcasecmp(hpo->po_type, "pop") != 0) 65055682Smarkm errx (1, "Unsupported po type %s", hpo->po_type); 65155682Smarkm 65272445Sassar ret = estrdup(hpo->po_host); 65372445Sassar *user = estrdup(hpo->po_name); 65455682Smarkm } 65555682Smarkm return ret; 65655682Smarkm} 65755682Smarkm 65855682Smarkm#endif /* HESIOD_INTERFACES */ 65955682Smarkm 66055682Smarkm#endif /* HESIOD */ 66155682Smarkm 66255682Smarkmstatic char * 66355682Smarkmget_pobox (const char **user) 66455682Smarkm{ 66555682Smarkm char *ret = NULL; 66655682Smarkm 66755682Smarkm#ifdef HESIOD 66855682Smarkm ret = hesiod_get_pobox (user); 66955682Smarkm#endif 67055682Smarkm 67155682Smarkm if (ret == NULL) 67255682Smarkm ret = getenv("MAILHOST"); 67355682Smarkm if (ret == NULL) 67455682Smarkm errx (1, "MAILHOST not set"); 67555682Smarkm return ret; 67655682Smarkm} 67755682Smarkm 67855682Smarkmstatic void 67955682Smarkmparse_pobox (char *a0, const char **host, const char **user) 68055682Smarkm{ 68155682Smarkm const char *h, *u; 68255682Smarkm char *p; 68355682Smarkm int po = 0; 68455682Smarkm 68555682Smarkm if (a0 == NULL) { 68655682Smarkm 68755682Smarkm *user = getenv ("USERNAME"); 68855682Smarkm if (*user == NULL) { 68955682Smarkm struct passwd *pwd = getpwuid (getuid ()); 69055682Smarkm 69155682Smarkm if (pwd == NULL) 69255682Smarkm errx (1, "Who are you?"); 69372445Sassar *user = estrdup (pwd->pw_name); 69455682Smarkm } 69555682Smarkm *host = get_pobox (user); 69655682Smarkm return; 69755682Smarkm } 69855682Smarkm 69955682Smarkm /* if the specification starts with po:, remember this information */ 70055682Smarkm if(strncmp(a0, "po:", 3) == 0) { 70155682Smarkm a0 += 3; 70255682Smarkm po++; 70355682Smarkm } 70455682Smarkm /* if there is an `@', the hostname is after it, otherwise at the 70555682Smarkm beginning of the string */ 70655682Smarkm p = strchr(a0, '@'); 70755682Smarkm if(p != NULL) { 70855682Smarkm *p++ = '\0'; 70955682Smarkm h = p; 71055682Smarkm } else { 71155682Smarkm h = a0; 71255682Smarkm } 71355682Smarkm /* if there is a `:', the username comes before it, otherwise at 71455682Smarkm the beginning of the string */ 71555682Smarkm p = strchr(a0, ':'); 71655682Smarkm if(p != NULL) { 71755682Smarkm *p++ = '\0'; 71855682Smarkm u = p; 71955682Smarkm } else { 72055682Smarkm u = a0; 72155682Smarkm } 72255682Smarkm if(h == u) { 72355682Smarkm /* some inconsistent compatibility with various mailers */ 72455682Smarkm if(po) { 72555682Smarkm h = get_pobox (&u); 72655682Smarkm } else { 72755682Smarkm u = get_default_username (); 72855682Smarkm if (u == NULL) 72955682Smarkm errx (1, "Who are you?"); 73055682Smarkm } 73155682Smarkm } 73255682Smarkm *host = h; 73355682Smarkm *user = u; 73455682Smarkm} 73555682Smarkm 73655682Smarkmint 73755682Smarkmmain(int argc, char **argv) 73855682Smarkm{ 73955682Smarkm int port = 0; 74055682Smarkm int optind = 0; 74155682Smarkm int ret = 1; 74255682Smarkm const char *host, *user, *filename = NULL; 74355682Smarkm char *pobox = NULL; 74455682Smarkm 74578527Sassar setprogname (argv[0]); 74655682Smarkm 74755682Smarkm#ifdef KRB5 74872445Sassar { 74972445Sassar krb5_error_code ret; 75072445Sassar 75172445Sassar ret = krb5_init_context (&context); 75272445Sassar if (ret) 75372445Sassar errx (1, "krb5_init_context failed: %d", ret); 75472445Sassar } 75555682Smarkm#endif 75655682Smarkm 75755682Smarkm if (getarg (args, sizeof(args) / sizeof(args[0]), argc, argv, 75855682Smarkm &optind)) 75955682Smarkm usage (1); 76055682Smarkm 76155682Smarkm argc -= optind; 76255682Smarkm argv += optind; 76355682Smarkm 76455682Smarkm#if defined(KRB4) && defined(KRB5) 76555682Smarkm if(use_v4 == -1 && use_v5 == 1) 76655682Smarkm use_v4 = 0; 76755682Smarkm if(use_v5 == -1 && use_v4 == 1) 76855682Smarkm use_v5 = 0; 76955682Smarkm#endif 77055682Smarkm 77155682Smarkm if (do_help) 77255682Smarkm usage (0); 77355682Smarkm 77455682Smarkm if (do_version) { 77555682Smarkm print_version(NULL); 77655682Smarkm return 0; 77755682Smarkm } 77855682Smarkm 77955682Smarkm if (do_from && header_str == NULL) 78055682Smarkm header_str = "From:"; 78155682Smarkm else if (header_str != NULL) 78255682Smarkm do_from = 1; 78355682Smarkm 78455682Smarkm if (do_from) { 78555682Smarkm if (argc == 0) 78655682Smarkm pobox = NULL; 78755682Smarkm else if (argc == 1) 78855682Smarkm pobox = argv[0]; 78955682Smarkm else 79055682Smarkm usage (1); 79155682Smarkm } else { 79255682Smarkm if (argc == 1) { 79355682Smarkm filename = argv[0]; 79455682Smarkm pobox = NULL; 79555682Smarkm } else if (argc == 2) { 79655682Smarkm filename = argv[1]; 79755682Smarkm pobox = argv[0]; 79855682Smarkm } else 79955682Smarkm usage (1); 80055682Smarkm } 80155682Smarkm 80255682Smarkm if (port_str) { 80355682Smarkm struct servent *s = roken_getservbyname (port_str, "tcp"); 80455682Smarkm 80555682Smarkm if (s) 80655682Smarkm port = s->s_port; 80755682Smarkm else { 80855682Smarkm char *ptr; 80955682Smarkm 81055682Smarkm port = strtol (port_str, &ptr, 10); 81155682Smarkm if (port == 0 && ptr == port_str) 81255682Smarkm errx (1, "Bad port `%s'", port_str); 81355682Smarkm port = htons(port); 81455682Smarkm } 81555682Smarkm } 81655682Smarkm if (port == 0) { 81755682Smarkm#ifdef KRB5 81855682Smarkm port = krb5_getportbyname (context, "kpop", "tcp", 1109); 81955682Smarkm#elif defined(KRB4) 82055682Smarkm port = k_getportbyname ("kpop", "tcp", htons(1109)); 82155682Smarkm#else 82255682Smarkm#error must define KRB4 or KRB5 82355682Smarkm#endif 82455682Smarkm } 82555682Smarkm 82655682Smarkm parse_pobox (pobox, &host, &user); 82755682Smarkm 82855682Smarkm#ifdef KRB5 82955682Smarkm if (ret && use_v5) { 83055682Smarkm ret = do_v5 (host, port, user, filename, header_str, 83155682Smarkm do_leave, verbose_level, do_fork); 83255682Smarkm } 83355682Smarkm#endif 83455682Smarkm 83555682Smarkm#ifdef KRB4 83655682Smarkm if (ret && use_v4) { 83755682Smarkm ret = do_v4 (host, port, user, filename, header_str, 83855682Smarkm do_leave, verbose_level, do_fork); 83955682Smarkm } 84055682Smarkm#endif /* KRB4 */ 84155682Smarkm return ret; 84255682Smarkm} 843