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Sourcecode: fetchmail version File versions

transact.c

/*
 * transact.c -- transaction primitives for the fetchmail driver loop
 *
 * Copyright 2001 by Eric S. Raymond
 * For license terms, see the file COPYING in this directory.
 *
 * 
 */

#include  "config.h"
#include  <stdio.h>
#include  <string.h>
#include  <ctype.h> /* isspace() */
#ifdef HAVE_MEMORY_H
#include  <memory.h>
#endif /* HAVE_MEMORY_H */
#if defined(STDC_HEADERS)
#include  <stdlib.h>
#endif
#if defined(HAVE_UNISTD_H)
#include <unistd.h>
#endif
#if defined(HAVE_STDARG_H)
#include  <stdarg.h>
#else
#include  <varargs.h>
#endif

#ifdef HAVE_NET_SOCKET_H
#include <net/socket.h>
#endif
#include "md5.h"

#include "i18n.h"
#include "socket.h"
#include "fetchmail.h"

#ifndef strstr          /* glibc-2.1 declares this as a macro */
extern char *strstr();  /* needed on sysV68 R3V7.1. */
#endif /* strstr */

int mytimeout;          /* value of nonreponse timeout */
int suppress_tags;      /* emit tags? */
char shroud[PASSWORDLEN*2+3]; /* string to shroud in debug output */
struct msgblk msgblk;

char tag[TAGLEN];
static int tagnum;
#define GENSYM    (sprintf(tag, "A%04d", ++tagnum % TAGMOD), tag)

static int accept_count, reject_count;
static struct method *protocol;

static void map_name(const char *name, struct query *ctl, struct idlist **xmit_names)
/* add given name to xmit_names if it matches declared localnames */
/*   name:   name to map */
/*   ctl:    list of permissible aliases */
/*   xmit_names: list of recipient names parsed out */
{
    const char    *lname;
    int off = 0;
    
    lname = idpair_find(&ctl->localnames, name+off);
    if (!lname && ctl->wildcard)
      lname = name+off;

    if (lname != (char *)NULL)
    {
      if (outlevel >= O_DEBUG)
          report(stdout, GT_("mapped %s to local %s\n"), name, lname);
      save_str(xmit_names, lname, XMIT_ACCEPT);
      accept_count++;
    }
}

static void find_server_names(const char *hdr,
                        struct query *ctl,
                        struct idlist **xmit_names)
/* parse names out of a RFC822 header into an ID list */
/*   hdr:         RFC822 header in question */
/*   ctl:         list of permissible aliases */
/*   xmit_names:  list of recipient names parsed out */
{
    if (hdr == (char *)NULL)
      return;
    else
    {
      char  *cp;

      for (cp = nxtaddr(hdr);
           cp != NULL;
           cp = nxtaddr(NULL))
      {
          char    *atsign;

          /* 
           * Handle empty address from a To: header containing only 
           * a comment.
           */
          if (!*cp)
            continue;

          /*
           * If the name of the user begins with a qmail virtual
           * domain prefix, ignore the prefix.  Doing this here
           * means qvirtual will work either with ordinary name
           * mapping or with a localdomains option.
           */
          if (ctl->server.qvirtual)
          {
            int sl = strlen(ctl->server.qvirtual);
 
            if (!strncasecmp(cp, ctl->server.qvirtual, sl))
                cp += sl;
          }

          if ((atsign = strchr(cp, '@'))) {
            struct idlist     *idp;

            /*
             * Does a trailing segment of the hostname match something
             * on the localdomains list?  If so, save the whole name
             * and keep going.
             */
            for (idp = ctl->server.localdomains; idp; idp = idp->next) {
                char    *rhs;

                rhs = atsign + (strlen(atsign) - strlen(idp->id));
                if (rhs > atsign &&
                  (rhs[-1] == '.' || rhs[-1] == '@') &&
                  strcasecmp(rhs, idp->id) == 0)
                {
                  if (outlevel >= O_DEBUG)
                      report(stdout, GT_("passed through %s matching %s\n"), 
                          cp, idp->id);
                  save_str(xmit_names, cp, XMIT_ACCEPT);
                  accept_count++;
                  goto nomap;
                }
            }

            /* if we matched a local domain, idp != NULL */
            if (!idp)
            {
                /*
                 * Check to see if the right-hand part is an alias
                 * or MX equivalent of the mailserver.  If it's
                 * not, skip this name.  If it is, we'll keep
                 * going and try to find a mapping to a client name.
                 */
                if (!is_host_alias(atsign+1, ctl))
                {
                  save_str(xmit_names, cp, XMIT_REJECT);
                  reject_count++;
                  continue;
                }
            }
            atsign[0] = '\0';
            map_name(cp, ctl, xmit_names);
          nomap:;
          }
      }
    }
}

/*
 * Return zero on a syntactically invalid address, nz on a valid one.
 *
 * This used to be strchr(a, '.'), but it turns out that lines like this
 *
 * Received: from punt-1.mail.demon.net by mailstore for markb@ordern.com
 *          id 938765929:10:27223:2; Fri, 01 Oct 99 08:18:49 GMT
 *
 * are not uncommon.  So now we just check that the following token is
 * not itself an email address.
 */
#define VALID_ADDRESS(a)      !strchr(a, '@')

static char *parse_received(struct query *ctl, char *bufp)
/* try to extract real address from the Received line */
/* If a valid Received: line is found, we return the full address in
 * a buffer which can be parsed from nxtaddr().  This is to ansure that
 * the local domain part of the address can be passed along in 
 * find_server_names() if it contains one.
 * Note: We should return a dummy header containing the address 
 * which makes nxtaddr() behave correctly. 
 */
{
    char *base, *ok = (char *)NULL;
    static char rbuf[HOSTLEN + USERNAMELEN + 4]; 

#define RBUF_WRITE(value) if (tp < rbuf+sizeof(rbuf)-1) *tp++=value

    /*
     * Try to extract the real envelope addressee.  We look here
     * specifically for the mailserver's Received line.
     * Note: this will only work for sendmail, or an MTA that
     * shares sendmail's convention for embedding the envelope
     * address in the Received line.  Sendmail itself only
     * does this when the mail has a single recipient.
     */
    if (outlevel >= O_DEBUG)
      report(stdout, GT_("analyzing Received line:\n%s"), bufp);

    /* search for whitepace-surrounded "by" followed by valid address */
    for (base = bufp;  ; base = ok + 2)
    {
      if (!(ok = strstr(base, "by")))
          break;
      else if (!isspace(ok[-1]) || !isspace(ok[2]))
          continue;
      else
      {
          char    *sp, *tp;

          /* extract space-delimited token after "by" */
          for (sp = ok + 2; isspace(*sp); sp++)
            continue;
          tp = rbuf;
          for (; !isspace(*sp); sp++)
            RBUF_WRITE(*sp);
          *tp = '\0';

          /* look for valid address */
          if (VALID_ADDRESS(rbuf))
            break;
          else
            ok = sp - 1;      /* arrange to skip this token */
      }
    }
    if (ok)
    {
      /*
       * If it's a DNS name of the mail server, look for the
       * recipient name after a following "for".  Otherwise
       * punt.
       */
      if (is_host_alias(rbuf, ctl))
      {
          if (outlevel >= O_DEBUG)
            report(stdout, 
                  GT_("line accepted, %s is an alias of the mailserver\n"), rbuf);
      }
      else
      {
          if (outlevel >= O_DEBUG)
            report(stdout, 
                  GT_("line rejected, %s is not an alias of the mailserver\n"), 
                  rbuf);
          return(NULL);
      }

      /* search for whitepace-surrounded "for" followed by xxxx@yyyy */
      for (base = ok + 4 + strlen(rbuf);  ; base = ok + 2)
      {
          if (!(ok = strstr(base, "for")))
            break;
          else if (!isspace(ok[-1]) || !isspace(ok[3]))
            continue;
          else
          {
            char  *sp, *tp;

            /* extract space-delimited token after "for" */
            for (sp = ok + 3; isspace(*sp); sp++)
                continue;
            tp = rbuf;
            for (; !isspace(*sp); sp++)
                RBUF_WRITE(*sp);
            *tp = '\0';

            if (strchr(rbuf, '@'))
                break;
            else
                ok = sp - 1;  /* arrange to skip this token */
          }
      }
      if (ok)
      {
          flag    want_gt = FALSE;
          char    *sp, *tp;

          /* char after "for" could be space or a continuation newline */
          for (sp = ok + 4; isspace(*sp); sp++)
            continue;
          tp = rbuf;
          RBUF_WRITE(':');    /* Here is the hack.  This is to be friends */
          RBUF_WRITE(' ');    /* with nxtaddr()... */
          if (*sp == '<')
          {
            want_gt = TRUE;
            sp++;
          }
          while (*sp == '@')        /* skip routes */
            while (*sp && *sp++ != ':')
                continue;
            while (*sp
                   && (want_gt ? (*sp != '>') : !isspace(*sp))
                   && *sp != ';')
            if (!isspace(*sp))
            {
                RBUF_WRITE(*sp);
                sp++;
            }    
            else
            {
                /* uh oh -- whitespace here can't be right! */
                ok = (char *)NULL;
                break;
            }
          RBUF_WRITE('\n');
          *tp = '\0';
          if (strlen(rbuf) <= 3)    /* apparently nothing has been found */
            ok = NULL;
      } else
          ok = (char *)NULL;
    }

    if (!ok)
    {
      if (outlevel >= O_DEBUG)
          report(stdout, GT_("no Received address found\n"));
      return(NULL);
    }
    else
    {
      if (outlevel >= O_DEBUG) {
          char *lf = rbuf + strlen(rbuf)-1;
          *lf = '\0';
          if (outlevel >= O_DEBUG)
            report(stdout, GT_("found Received address `%s'\n"), rbuf+2);
          *lf = '\n';
      }
      return(rbuf);
    }
}

/* shared by readheaders and readbody */
static int sizeticker;

#define EMPTYLINE(s)   (((s)[0] == '\r' && (s)[1] == '\n' && (s)[2] == '\0') \
                       || ((s)[0] == '\n' && (s)[1] == '\0'))

static int end_of_header (const char *s)
/* accept "\r*\n" as EOH in order to be bulletproof against broken survers */
{
    while (s[0] == '\r')
      s++;
    return (s[0] == '\n' && s[1] == '\0');
}

int readheaders(int sock,
                   long fetchlen,
                   long reallen,
                   struct query *ctl,
                   int num,
                   flag *suppress_readbody)
/* read message headers and ship to SMTP or MDA */
/*   sock:        to which the server is connected */
/*   fetchlen:          length of message according to fetch response */
/*   reallen:           length of message according to getsizes */
/*   ctl:         query control record */
/*   num:         index of message */
/*   suppress_readbody: whether call to readbody() should be supressed */
{
    struct addrblk
    {
      int         offset;
      struct addrblk    *next;
    };
    struct addrblk      *to_addrchain = NULL;
    struct addrblk      **to_chainptr = &to_addrchain;
    struct addrblk      *resent_to_addrchain = NULL;
    struct addrblk      **resent_to_chainptr = &resent_to_addrchain;

    char          buf[MSGBUFSIZE+1];
    int                 from_offs, reply_to_offs, resent_from_offs;
    int                 app_from_offs, sender_offs, resent_sender_offs;
    int                 env_offs;
    char          *received_for, *rcv, *cp;
    static char         *delivered_to = NULL;
    int           n, linelen, oldlen, ch, remaining, skipcount;
    struct idlist       *idp;
    flag          no_local_matches = FALSE;
    flag          has_nuls;
    int                 olderrs, good_addresses, bad_addresses;
    int                 retain_mail = 0, refuse_mail = 0;
    flag          already_has_return_path = FALSE;

    sizeticker = 0;
    has_nuls = FALSE;
    msgblk.return_path[0] = '\0';
    olderrs = ctl->errcount;

    /* read message headers */
    msgblk.reallen = reallen;

    /*
     * We used to free the header block unconditionally at the end of 
     * readheaders, but it turns out that if close_sink() hits an error
     * condition the code for sending bouncemail will actually look
     * at the freed storage and coredump...
     */
    if (msgblk.headers)
       free(msgblk.headers);
    free_str_list(&msgblk.recipients);
    if (delivered_to)
      free(delivered_to);

    /* initially, no message digest */
    memset(ctl->digest, '\0', sizeof(ctl->digest));

    msgblk.headers = received_for = delivered_to = NULL;
    from_offs = reply_to_offs = resent_from_offs = app_from_offs = 
      sender_offs = resent_sender_offs = env_offs = -1;
    oldlen = 0;
    msgblk.msglen = 0;
    skipcount = 0;
    ctl->mimemsg = 0;

    for (remaining = fetchlen; remaining > 0 || protocol->delimited; )
    {
      char *line, *rline;
      int overlong = FALSE;

      line = xmalloc(sizeof(buf));
      linelen = 0;
      line[0] = '\0';
      do {
          do {
            char  *sp, *tp;

            set_timeout(mytimeout);
            if ((n = SockRead(sock, buf, sizeof(buf)-1)) == -1) {
                set_timeout(0);
                free(line);
                free(msgblk.headers);
                msgblk.headers = NULL;
                return(PS_SOCKET);
            }
            set_timeout(0);

            /*
             * Smash out any NULs, they could wreak havoc later on.
             * Some network stacks seem to generate these at random,
             * especially (according to reports) at the beginning of the
             * first read.  NULs are illegal in RFC822 format.
             */
            for (sp = tp = buf; sp < buf + n; sp++)
                if (*sp)
                  *tp++ = *sp;
            *tp = '\0';
            n = tp - buf;
          } while
              (n == 0);

          remaining -= n;
          linelen += n;
          msgblk.msglen += n;

          /*
           * Try to gracefully handle the case where the length of a
           * line exceeds MSGBUFSIZE.
           */
          if (n && buf[n-1] != '\n') 
          {
            overlong = TRUE;
            rline = (char *) realloc(line, linelen + 1);
            if (rline == NULL)
            {
                free (line);
                return(PS_IOERR);
            }
            line = rline;
            memcpy(line + linelen - n, buf, n);
            line[linelen] = '\0';
            ch = ' '; /* So the next iteration starts */
            continue;
          }

          /* lines may not be properly CRLF terminated; fix this for qmail */
          /* we don't want to overflow the buffer here */
          if (ctl->forcecr && buf[n-1]=='\n' && (n==1 || buf[n-2]!='\r'))
          {
            char * tcp;
            rline = (char *) realloc(line, linelen + 2);
            if (rline == NULL)
            {
                free (line);
                return(PS_IOERR);
            }
            line = rline;
            memcpy(line + linelen - n, buf, n - 1);
            tcp = line + linelen - 1;
            *tcp++ = '\r';
            *tcp++ = '\n';
            *tcp++ = '\0';
            n++;
            linelen++;
          }
          else
          {
            rline = (char *) realloc(line, linelen + 1);
            if (rline == NULL)
            {
                free (line);
                return(PS_IOERR);
            }
            line = rline;
            memcpy(line + linelen - n, buf, n + 1);
          }

          /* check for end of headers */
          if (end_of_header(line))
          {
            if (linelen != strlen (line))
                has_nuls = TRUE;
            free(line);
            goto process_headers;
          }

          /*
           * Check for end of message immediately.  If one of your folders
           * has been mangled, the delimiter may occur directly after the
           * header.
           */
          if (protocol->delimited && line[0] == '.' && EMPTYLINE(line+1))
          {
            if (outlevel > O_SILENT)
                report(stdout,
                     GT_("message delimiter found while scanning headers\n"));
            if (suppress_readbody)
                *suppress_readbody = TRUE;
            if (linelen != strlen (line))
                has_nuls = TRUE;
            free(line);
            goto process_headers;
          }

          /*
           * At least one brain-dead website (netmind.com) is known to
           * send out robotmail that's missing the RFC822 delimiter blank
           * line before the body! Without this check fetchmail segfaults.
           * With it, we treat such messages as spam and refuse them.
           */
          if (!refuse_mail && !isspace(line[0]) && !strchr(line, ':'))
          {
            if (linelen != strlen (line))
                has_nuls = TRUE;
            if (outlevel > O_SILENT)
                report(stdout,
                     GT_("incorrect header line found while scanning headers\n"));
            if (outlevel >= O_VERBOSE)
                report (stdout, GT_("line: %s"), line);
            refuse_mail = 1;
          }

          /* check for RFC822 continuations */
          set_timeout(mytimeout);
          ch = SockPeek(sock);
          set_timeout(0);
      } while
          (ch == ' ' || ch == '\t');      /* continuation to next line? */

      /* write the message size dots */
      if ((outlevel > O_SILENT && outlevel < O_VERBOSE) && linelen > 0)
      {
          sizeticker += linelen;
          while (sizeticker >= SIZETICKER)
          {
            if (outlevel > O_SILENT && run.showdots)
            {
                fputc('.', stdout);
                fflush(stdout);
            }
            sizeticker -= SIZETICKER;
          }
      }
            /*
             * Decode MIME encoded headers. We MUST do this before
             * looking at the Content-Type / Content-Transfer-Encoding
             * headers (RFC 2046).
             */
            if ( ctl->mimedecode )
            {
                char *tcp;
                UnMimeHeader(line);
                /* the line is now shorter. So we retrace back till we find our terminating
                 * combination \n\0, we move backwards to make sure that we don't catch som
                 * \n\0 stored in the decoded part of the message */
                for(tcp = line + linelen - 1; tcp > line && (*tcp != 0 || tcp[-1] != '\n'); tcp--);
                if(tcp > line) linelen = tcp - line;
            }


      /* skip processing if we are going to retain or refuse this mail */
      if (retain_mail || refuse_mail)
      {
          free(line);
          continue;
      }

      /* we see an ordinary (non-header, non-message-delimiter line */
      if (linelen != strlen (line))
          has_nuls = TRUE;

      /*
       * The University of Washington IMAP server (the reference
       * implementation of IMAP4 written by Mark Crispin) relies
       * on being able to keep base-UID information in a special
       * message at the head of the mailbox.  This message should
       * neither be deleted nor forwarded.
       */
#ifdef POP2_ENABLE
      /*
       * We disable this check under POP2 because there's no way to
       * prevent deletion of the message.  So at least we ought to 
       * forward it to the user so he or she will have some clue
       * that things have gone awry.
       */
#if INET6_ENABLE
      if (strncmp(protocol->service, "pop2", 4))
#else /* INET6_ENABLE */
      if (protocol->port != 109)
#endif /* INET6_ENABLE */
#endif /* POP2_ENABLE */
          if (num == 1 && !strncasecmp(line, "X-IMAP:", 7)) {
            free(line);
            retain_mail = 1;
            continue;
          }

      /*
       * This code prevents fetchmail from becoming an accessory after
       * the fact to upstream sendmails with the `E' option on.  It also
       * copes with certain brain-dead POP servers (like NT's) that pass
       * through Unix from_ lines.
       *
       * Either of these bugs can result in a non-RFC822 line at the
       * beginning of the headers.  If fetchmail just passes it
       * through, the client listener may think the message has *no*
       * headers (since the first) line it sees doesn't look
       * RFC822-conformant) and fake up a set.
       *
       * What the user would see in this case is bogus (synthesized)
       * headers, followed by a blank line, followed by the >From, 
       * followed by the real headers, followed by a blank line,
       * followed by text.
       *
       * We forestall this lossage by tossing anything that looks
       * like an escaped or passed-through From_ line in headers.
       * These aren't RFC822 so our conscience is clear...
       */
      if (!strncasecmp(line, ">From ", 6) || !strncasecmp(line, "From ", 5))
      {
          free(line);
          continue;
      }

      /*
       * We remove all Delivered-To: headers.
       * 
       * This is to avoid false mail loops messages when delivering
       * local messages to and from a Postfix/qmail mailserver. 
       */
      if (ctl->dropdelivered && !strncasecmp(line, "Delivered-To:", 13)) 
      {
          if (delivered_to)
            free(line);
          else 
            delivered_to = line;
          continue;
      }

      /*
       * If we see a Status line, it may have been inserted by an MUA
       * on the mail host, or it may have been inserted by the server
       * program after the headers in the transaction stream.  This
       * can actually hose some new-mail notifiers such as xbuffy,
       * which assumes any Status line came from a *local* MDA and
       * therefore indicates that the message has been seen.
       *
       * Some buggy POP servers (including at least the 3.3(20)
       * version of the one distributed with IMAP) insert empty
       * Status lines in the transaction stream; we'll chuck those
       * unconditionally.  Nonempty ones get chucked if the user
       * turns on the dropstatus flag.
       */
      {
          char    *cp;

          if (!strncasecmp(line, "Status:", 7))
            cp = line + 7;
          else if (!strncasecmp(line, "X-Mozilla-Status:", 17))
            cp = line + 17;
          else
            cp = NULL;
          if (cp) {
            while (*cp && isspace(*cp)) cp++;
            if (!*cp || ctl->dropstatus)
            {
                free(line);
                continue;
            }
          }
      }

      if (ctl->rewrite)
          line = reply_hack(line, ctl->server.truename, &linelen);

      /*
       * OK, this is messy.  If we're forwarding by SMTP, it's the
       * SMTP-receiver's job (according to RFC821, page 22, section
       * 4.1.1) to generate a Return-Path line on final delivery.
       * The trouble is, we've already got one because the
       * mailserver's SMTP thought *it* was responsible for final
       * delivery.
       *
       * Stash away the contents of Return-Path (as modified by reply_hack)
       * for use in generating MAIL FROM later on, then prevent the header
       * from being saved with the others.  In effect, we strip it off here.
       *
       * If the SMTP server conforms to the standards, and fetchmail gets the
       * envelope sender from the Return-Path, the new Return-Path should be
       * exactly the same as the original one.
       *
       * We do *not* want to ignore empty Return-Path headers.  These should
       * be passed through as a way of indicating that a message should
       * not trigger bounces if delivery fails.  What we *do* need to do is
       * make sure we never try to rewrite such a blank Return-Path.  We
       * handle this with a check for <> in the rewrite logic above.
       *
       * Also, if an email has multiple Return-Path: headers, we only
       * read the first occurance, as some spam email has more than one
       * Return-Path.
       *
       */
      if ((already_has_return_path==FALSE) && !strncasecmp("Return-Path:", line, 12) && (cp = nxtaddr(line)))
      {
          already_has_return_path = TRUE;
          if (cp[0]=='\0')    /* nxtaddr() strips the brackets... */
            cp="<>";
          strncpy(msgblk.return_path, cp, sizeof(msgblk.return_path));
          msgblk.return_path[sizeof(msgblk.return_path)-1] = '\0';
          if (!ctl->mda) {
            free(line);
            continue;
          }
      }

      if (!msgblk.headers)
      {
          oldlen = linelen;
          msgblk.headers = xmalloc(oldlen + 1);
          (void) memcpy(msgblk.headers, line, linelen);
          msgblk.headers[oldlen] = '\0';
          free(line);
          line = msgblk.headers;
      }
      else
      {
          char *newhdrs;
          int     newlen;

          newlen = oldlen + linelen;
          newhdrs = (char *) realloc(msgblk.headers, newlen + 1);
          if (newhdrs == NULL) {
            free(line);
            return(PS_IOERR);
          }
          msgblk.headers = newhdrs;
          memcpy(msgblk.headers + oldlen, line, linelen);
          msgblk.headers[newlen] = '\0';
          free(line);
          line = msgblk.headers + oldlen;
          oldlen = newlen;
      }

      /* find offsets of various special headers */
      if (!strncasecmp("From:", line, 5))
          from_offs = (line - msgblk.headers);
      else if (!strncasecmp("Reply-To:", line, 9))
          reply_to_offs = (line - msgblk.headers);
      else if (!strncasecmp("Resent-From:", line, 12))
          resent_from_offs = (line - msgblk.headers);
      else if (!strncasecmp("Apparently-From:", line, 16))
          app_from_offs = (line - msgblk.headers);
      /*
       * Netscape 4.7 puts "Sender: zap" in mail headers.  Perverse...
       *
       * But a literal reading of RFC822 sec. 4.4.2 supports the idea
       * that Sender: *doesn't* have to be a working email address.
       *
       * The definition of the Sender header in RFC822 says, in
       * part, "The Sender mailbox specification includes a word
       * sequence which must correspond to a specific agent (i.e., a
       * human user or a computer program) rather than a standard
       * address."  That implies that the contents of the Sender
       * field don't need to be a legal email address at all So
       * ignore any Sender or Resent-Sender lines unless they
       * contain @.
       *
       * (RFC2822 says the contents of Sender must be a valid mailbox
       * address, which is also what RFC822 4.4.4 implies.)
       */
      else if (!strncasecmp("Sender:", line, 7) && (strchr(line, '@') || strchr(line, '!')))
          sender_offs = (line - msgblk.headers);
      else if (!strncasecmp("Resent-Sender:", line, 14) && (strchr(line, '@') || strchr(line, '!')))
          resent_sender_offs = (line - msgblk.headers);

#ifdef __UNUSED__
      else if (!strncasecmp("Message-Id:", line, 11))
      {
          if (ctl->server.uidl)
          {
              char id[IDLEN+1];

            line[IDLEN+12] = 0;           /* prevent stack overflow */
            sscanf(line+12, "%s", id);
              if (!str_find( &ctl->newsaved, num))
            {
                struct idlist *new = save_str(&ctl->newsaved,id,UID_SEEN);
                new->val.status.num = num;
            }
          }
      }
#endif /* __UNUSED__ */

      /* if multidrop is on, gather addressee headers */
      if (MULTIDROP(ctl))
      {
          if (!strncasecmp("To:", line, 3)
            || !strncasecmp("Cc:", line, 3)
            || !strncasecmp("Bcc:", line, 4)
            || !strncasecmp("Apparently-To:", line, 14))
          {
            *to_chainptr = xmalloc(sizeof(struct addrblk));
            (*to_chainptr)->offset = (line - msgblk.headers);
            to_chainptr = &(*to_chainptr)->next; 
            *to_chainptr = NULL;
          }

          else if (!strncasecmp("Resent-To:", line, 10)
                 || !strncasecmp("Resent-Cc:", line, 10)
                 || !strncasecmp("Resent-Bcc:", line, 11))
          {
            *resent_to_chainptr = xmalloc(sizeof(struct addrblk));
            (*resent_to_chainptr)->offset = (line - msgblk.headers);
            resent_to_chainptr = &(*resent_to_chainptr)->next; 
            *resent_to_chainptr = NULL;
          }

          else if (ctl->server.envelope != STRING_DISABLED)
          {
            if (ctl->server.envelope 
                && strcasecmp(ctl->server.envelope, "Received"))
            {
                if (env_offs == -1 && !strncasecmp(ctl->server.envelope,
                                           line,
                                           strlen(ctl->server.envelope)))
                {                   
                  if (skipcount++ < ctl->server.envskip)
                      continue;
                  env_offs = (line - msgblk.headers);
                }    
            }
            else if (!received_for && !strncasecmp("Received:", line, 9))
            {
                if (skipcount++ < ctl->server.envskip)
                  continue;
                received_for = parse_received(ctl, line);
            }
          }
      }
    }

 process_headers:    

    if (retain_mail)
    {
      free(msgblk.headers);
      msgblk.headers = NULL;
      return(PS_RETAINED);
    }
    if (refuse_mail)
      return(PS_REFUSED);
    /*
     * This is the duplicate-message killer code.
     *
     * When mail delivered to a multidrop mailbox on the server is
     * addressed to multiple people on the client machine, there will
     * be one copy left in the box for each recipient.  This is not a
     * problem if we have the actual recipient address to dispatch on
     * (e.g. because we've mined it out of sendmail trace headers, or
     * a qmail Delivered-To line, or a declared sender envelope line).
     *
     * But if we're mining addressees out of the To/Cc/Bcc fields, and
     * if the mail is addressed to N people, each recipient will
     * get N copies.  This is bad when N > 1.
     *
     * Foil this by suppressing all but one copy of a message with a
     * given set of headers.
     *
     * Note: This implementation only catches runs of successive
     * messages with the same ID, but that should be good
     * enough. A more general implementation would have to store
     * ever-growing lists of seen message-IDs; in a long-running
     * daemon this would turn into a memory leak even if the 
     * implementation were perfect.
     * 
     * Don't mess with this code casually.  It would be way too easy
     * to break it in a way that blackholed mail.  Better to pass
     * the occasional duplicate than to do that...
     */
    if (MULTIDROP(ctl))
    {
      MD5_CTX context;

      MD5Init(&context);
      MD5Update(&context, msgblk.headers, strlen(msgblk.headers));
      MD5Final(ctl->digest, &context);

      if (!received_for && env_offs == -1 && !delivered_to)
      {
          /*
           * Hmmm...can MD5 ever yield all zeroes as a hash value?
           * If so there is a one in 18-quadrillion chance this 
           * code will incorrectly nuke the first message.
           */
          if (!memcmp(ctl->lastdigest, ctl->digest, DIGESTLEN))
            return(PS_REFUSED);
      }
      memcpy(ctl->lastdigest, ctl->digest, DIGESTLEN);
    }

    /*
     * Hack time.  If the first line of the message was blank, with no headers
     * (this happens occasionally due to bad gatewaying software) cons up
     * a set of fake headers.  
     *
     * If you modify the fake header template below, be sure you don't
     * make either From or To address @-less, otherwise the reply_hack
     * logic will do bad things.
     */
    if (msgblk.headers == (char *)NULL)
    {
#ifdef HAVE_SNPRINTF
      snprintf(buf, sizeof(buf),
#else
      sprintf(buf, 
#endif /* HAVE_SNPRINTF */
      "From: FETCHMAIL-DAEMON\r\nTo: %s@%s\r\nSubject: Headerless mail from %s's mailbox on %s\r\n",
            user, fetchmailhost, ctl->remotename, ctl->server.truename);
      msgblk.headers = xstrdup(buf);
    }

    /*
     * We can now process message headers before reading the text.
     * In fact we have to, as this will tell us where to forward to.
     */

    /* Check for MIME headers indicating possible 8-bit data */
    ctl->mimemsg = MimeBodyType(msgblk.headers, ctl->mimedecode);

#ifdef SDPS_ENABLE
    if (ctl->server.sdps && sdps_envfrom)
    {
      /* We have the real envelope return-path, stored out of band by
       * SDPS - that's more accurate than any header is going to be.
       */
      strcpy(msgblk.return_path, sdps_envfrom);
      free(sdps_envfrom);
    } else
#endif /* SDPS_ENABLE */
    /*
     * If there is a Return-Path address on the message, this was
     * almost certainly the MAIL FROM address given the originating
     * sendmail.  This is the best thing to use for logging the
     * message origin (it sets up the right behavior for bounces and
     * mailing lists).  Otherwise, fall down to the next available 
     * envelope address (which is the most probable real sender).
     * *** The order is important! ***
     * This is especially useful when receiving mailing list
     * messages in multidrop mode.  if a local address doesn't
     * exist, the bounce message won't be returned blindly to the 
     * author or to the list itself but rather to the list manager
     * (ex: specified by "Sender:") which is much less annoying.  This 
     * is true for most mailing list packages.
     */
    if( !msgblk.return_path[0] ){
      char *ap = NULL;
      if (resent_sender_offs >= 0 && (ap = nxtaddr(msgblk.headers + resent_sender_offs)));
      else if (sender_offs >= 0 && (ap = nxtaddr(msgblk.headers + sender_offs)));
      else if (resent_from_offs >= 0 && (ap = nxtaddr(msgblk.headers + resent_from_offs)));
      else if (from_offs >= 0 && (ap = nxtaddr(msgblk.headers + from_offs)));
      else if (reply_to_offs >= 0 && (ap = nxtaddr(msgblk.headers + reply_to_offs)));
      else if (app_from_offs >= 0 && (ap = nxtaddr(msgblk.headers + app_from_offs)));
      /* multi-line MAIL FROM addresses confuse SMTP terribly */
      if (ap && !strchr(ap, '\n')) {
          strncpy(msgblk.return_path, ap, sizeof(msgblk.return_path));
          msgblk.return_path[sizeof(msgblk.return_path)-1] = '\0';
      }
    }

    /* cons up a list of local recipients */
    msgblk.recipients = (struct idlist *)NULL;
    accept_count = reject_count = 0;
    /* is this a multidrop box? */
    if (MULTIDROP(ctl))
    {
#ifdef SDPS_ENABLE
      if (ctl->server.sdps && sdps_envto)
      {
          /* We have the real envelope recipient, stored out of band by
           * SDPS - that's more accurate than any header is going to be.
           */
          find_server_names(sdps_envto, ctl, &msgblk.recipients);
          free(sdps_envto);
      } else
#endif /* SDPS_ENABLE */ 
      if (env_offs > -1)          /* We have the actual envelope addressee */
          find_server_names(msgblk.headers + env_offs, ctl, &msgblk.recipients);
      else if (delivered_to && ctl->server.envelope != STRING_DISABLED &&
      ctl->server.envelope && !strcasecmp(ctl->server.envelope, "Delivered-To"))
   {
          find_server_names(delivered_to, ctl, &msgblk.recipients);
       free(delivered_to);
       delivered_to = NULL;
   }
      else if (received_for)
          /*
           * We have the Received for addressee.  
           * It has to be a mailserver address, or we
           * wouldn't have got here.
           * We use find_server_names() to let local 
           * hostnames go through.
           */
          find_server_names(received_for, ctl, &msgblk.recipients);
      else
      {
          /*
           * We haven't extracted the envelope address.
           * So check all the "Resent-To" header addresses if 
           * they exist.  If and only if they don't, consider
           * the "To" addresses.
           */
          register struct addrblk *nextptr;
          if (resent_to_addrchain) {
            /* delete the "To" chain and substitute it 
             * with the "Resent-To" list 
             */
            while (to_addrchain) {
                nextptr = to_addrchain->next;
                free(to_addrchain);
                to_addrchain = nextptr;
            }
            to_addrchain = resent_to_addrchain;
            resent_to_addrchain = NULL;
          }
          /* now look for remaining adresses */
          while (to_addrchain) {
            find_server_names(msgblk.headers+to_addrchain->offset, ctl, &msgblk.recipients);
            nextptr = to_addrchain->next;
            free(to_addrchain);
            to_addrchain = nextptr;
          }
      }
      if (!accept_count)
      {
          no_local_matches = TRUE;
          save_str(&msgblk.recipients, run.postmaster, XMIT_ACCEPT);
          if (outlevel >= O_DEBUG)
            report(stdout,
                  GT_("no local matches, forwarding to %s\n"),
                  run.postmaster);
      }
    }
    else    /* it's a single-drop box, use first localname */
      save_str(&msgblk.recipients, ctl->localnames->id, XMIT_ACCEPT);


    /*
     * Time to either address the message or decide we can't deliver it yet.
     */
    if (ctl->errcount > olderrs)    /* there were DNS errors above */
    {
      if (outlevel >= O_DEBUG)
          report(stdout,
               GT_("forwarding and deletion suppressed due to DNS errors\n"));
      free(msgblk.headers);
      msgblk.headers = NULL;
      free_str_list(&msgblk.recipients);
      return(PS_TRANSIENT);
    }
    else
    {
      /* set up stuffline() so we can deliver the message body through it */ 
      if ((n = open_sink(ctl, &msgblk,
                     &good_addresses, &bad_addresses)) != PS_SUCCESS)
      {
          free(msgblk.headers);
          msgblk.headers = NULL;
          free_str_list(&msgblk.recipients);
          return(n);
      }
    }

    n = 0;
    /*
     * Some server/sendmail combinations cause problems when our
     * synthetic Received line is before the From header.  Cope
     * with this...
     */
    if ((rcv = strstr(msgblk.headers, "Received:")) == (char *)NULL)
      rcv = msgblk.headers;
    /* handle ">Received:" lines too */
    while (rcv > msgblk.headers && rcv[-1] != '\n')
      rcv--;
    if (rcv > msgblk.headers)
    {
      char  c = *rcv;

      *rcv = '\0';
      n = stuffline(ctl, msgblk.headers);
      *rcv = c;
    }
    if (!run.invisible && n != -1)
    {
      /* utter any per-message Received information we need here */
        if (ctl->server.trueaddr) {
#ifdef HAVE_SNPRINTF
          snprintf(buf, sizeof(buf),
#else
          sprintf(buf, 
#endif /* HAVE_SNPRINTF */
                "Received: from %s [%u.%u.%u.%u]\r\n", 
                ctl->server.truename,
                (unsigned char)ctl->server.trueaddr[0],
                (unsigned char)ctl->server.trueaddr[1],
                (unsigned char)ctl->server.trueaddr[2],
                (unsigned char)ctl->server.trueaddr[3]);
      } else {
#ifdef HAVE_SNPRINTF
        snprintf(buf, sizeof(buf),
#else                       
        sprintf(buf,
#endif /* HAVE_SNPRINTF */
              "Received: from %s\r\n", ctl->server.truename);
      }
      n = stuffline(ctl, buf);
      if (n != -1)
      {
          /*
           * This header is technically invalid under RFC822.
           * POP3, IMAP, etc. are not legal mail-parameter values.
           */
#ifdef HAVE_SNPRINTF
          snprintf(buf, sizeof(buf),
#else
          sprintf(buf,
#endif /* HAVE_SNPRINTF */
                "\tby %s with %s (fetchmail-%s",
                fetchmailhost,
                protocol->name,
                VERSION);
          if (ctl->tracepolls)
          {
            sprintf(buf + strlen(buf), " polling %s account %s",
                  ctl->server.pollname, 
                  ctl->remotename);
          }
#ifdef HAVE_SNPRINTF
          snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), ")\r\n");
#else
          strcat(buf, ")\r\n");
#endif /* HAVE_SNPRINTF */
          n = stuffline(ctl, buf);
          if (n != -1)
          {
            buf[0] = '\t';
            if (good_addresses == 0)
            {
#ifdef HAVE_SNPRINTF
                snprintf(buf+1, sizeof(buf)-1,
#else
                sprintf(buf+1,
#endif /* HAVE_SNPRINTF */
                      "for %s (by default); ",
                      rcpt_address (ctl, run.postmaster, 0));
            }
            else if (good_addresses == 1)
            {
                for (idp = msgblk.recipients; idp; idp = idp->next)
                  if (idp->val.status.mark == XMIT_ACCEPT)
                      break;  /* only report first address */
#ifdef HAVE_SNPRINTF
                snprintf(buf+1, sizeof(buf)-1,
#else                       
                sprintf(buf+1,
#endif /* HAVE_SNPRINTF */
                      "for %s", rcpt_address (ctl, idp->id, 1));
                sprintf(buf+strlen(buf), " (%s); ",
                      MULTIDROP(ctl) ? "multi-drop" : "single-drop");
            }
            else
                buf[1] = '\0';

#ifdef HAVE_SNPRINTF
            snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "%s\r\n",
                  rfc822timestamp());
#else
            strcat(buf, rfc822timestamp());
            strcat(buf, "\r\n");
#endif /* HAVE_SNPRINTF */
            n = stuffline(ctl, buf);
          }
      }
    }

    if (n != -1)
      n = stuffline(ctl, rcv);      /* ship out rest of msgblk.headers */

    if (n == -1)
    {
      report(stdout, GT_("writing RFC822 msgblk.headers\n"));
      release_sink(ctl);
      free(msgblk.headers);
      msgblk.headers = NULL;
      free_str_list(&msgblk.recipients);
      return(PS_IOERR);
    }
    else if ((run.poll_interval == 0 || nodetach) && outlevel >= O_VERBOSE && !isafile(2))
      fputs("#", stdout);

    /* write error notifications */
    if (no_local_matches || has_nuls || bad_addresses)
    {
      int   errlen = 0;
      char  errhd[USERNAMELEN + POPBUFSIZE], *errmsg;

      errmsg = errhd;
      (void) strcpy(errhd, "X-Fetchmail-Warning: ");
      if (no_local_matches)
      {
          if (reject_count != 1)
            strcat(errhd, GT_("no recipient addresses matched declared local names"));
          else
          {
            for (idp = msgblk.recipients; idp; idp = idp->next)
                if (idp->val.status.mark == XMIT_REJECT)
                  break;
#ifdef HAVE_SNPRINTF
            snprintf(errhd+strlen(errhd), sizeof(errhd)-strlen(errhd),
#else
            sprintf(errhd+strlen(errhd),
#endif /* HAVE_SNPRINTF */
                  GT_("recipient address %s didn't match any local name"), idp->id);
          }
      }

      if (has_nuls)
      {
          if (errhd[sizeof("X-Fetchmail-Warning: ")])
#ifdef HAVE_SNPRINTF
            snprintf(errhd+strlen(errhd), sizeof(errhd)-strlen(errhd), "; ");
          snprintf(errhd+strlen(errhd), sizeof(errhd)-strlen(errhd),
#else
            strcat(errhd, "; ");
          strcat(errhd,
#endif /* HAVE_SNPRINTF */
                  GT_("message has embedded NULs"));
      }

      if (bad_addresses)
      {
          if (errhd[sizeof("X-Fetchmail-Warning: ")])
#ifdef HAVE_SNPRINTF
            snprintf(errhd+strlen(errhd), sizeof(errhd)-strlen(errhd), "; ");
          snprintf(errhd+strlen(errhd), sizeof(errhd)-strlen(errhd),
#else
            strcat(errhd, "; ");
          strcat(errhd,
#endif /* HAVE_SNPRINTF */
                  GT_("SMTP listener rejected local recipient addresses: "));
          errlen = strlen(errhd);
          for (idp = msgblk.recipients; idp; idp = idp->next)
            if (idp->val.status.mark == XMIT_RCPTBAD)
                errlen += strlen(idp->id) + 2;

          xalloca(errmsg, char *, errlen+3);
          (void) strcpy(errmsg, errhd);
          for (idp = msgblk.recipients; idp; idp = idp->next)
            if (idp->val.status.mark == XMIT_RCPTBAD)
            {
                strcat(errmsg, idp->id);
                if (idp->next)
                  strcat(errmsg, ", ");
            }

      }

      strcat(errmsg, "\r\n");

      /* ship out the error line */
      stuffline(ctl, errmsg);
    }

    /* issue the delimiter line */
    cp = buf;
    *cp++ = '\r';
    *cp++ = '\n';
    *cp++ = '\0';
    stuffline(ctl, buf);

    return(PS_SUCCESS);
}

int readbody(int sock, struct query *ctl, flag forward, int len)
/* read and dispose of a message body presented on sock */
/*   ctl:         query control record */
/*   sock:        to which the server is connected */
/*   len:         length of message */
/*   forward:           TRUE to forward */
{
    int     linelen;
    unsigned char buf[MSGBUFSIZE+4];
    unsigned char *inbufp = buf;
    flag issoftline = FALSE;

    /*
     * Pass through the text lines in the body.
     *
     * Yes, this wants to be ||, not &&.  The problem is that in the most
     * important delimited protocol, POP3, the length is not reliable.
     * As usual, the problem is Microsoft brain damage; see FAQ item S2.
     * So, for delimited protocols we need to ignore the length here and
     * instead drop out of the loop with a break statement when we see
     * the message delimiter.
     */
    while (protocol->delimited || len > 0)
    {
      set_timeout(mytimeout);
      if ((linelen = SockRead(sock, inbufp, sizeof(buf)-4-(inbufp-buf)))==-1)
      {
          set_timeout(0);
          release_sink(ctl);
          return(PS_SOCKET);
      }
      set_timeout(0);

      /* write the message size dots */
      if (linelen > 0)
      {
          sizeticker += linelen;
          while (sizeticker >= SIZETICKER)
          {
            if (outlevel > O_SILENT && run.showdots)
            {
                fputc('.', stdout);
                fflush(stdout);
            }
            sizeticker -= SIZETICKER;
          }
      }
      len -= linelen;

      /* check for end of message */
      if (protocol->delimited && *inbufp == '.')
      {
          if (EMPTYLINE(inbufp+1))
            break;
          else
            msgblk.msglen--;  /* subtract the size of the dot escape */
      }

      msgblk.msglen += linelen;

      if (ctl->mimedecode && (ctl->mimemsg & MSG_NEEDS_DECODE)) {
          issoftline = UnMimeBodyline(&inbufp, protocol->delimited, issoftline);
          if (issoftline && (sizeof(buf)-1-(inbufp-buf) < 200))
          {
            /*
             * Soft linebreak, but less than 200 bytes left in
             * input buffer. Rather than doing a buffer overrun,
             * ignore the soft linebreak, NL-terminate data and
             * deliver what we have now.
             * (Who writes lines longer than 2K anyway?)
             */
            *inbufp = '\n'; *(inbufp+1) = '\0';
            issoftline = 0;
          }
      }

      /* ship out the text line */
      if (forward && (!issoftline))
      {
          int     n;
          inbufp = buf;

          /* guard against very long lines */
          buf[MSGBUFSIZE+1] = '\r';
          buf[MSGBUFSIZE+2] = '\n';
          buf[MSGBUFSIZE+3] = '\0';

          n = stuffline(ctl, buf);

          if (n < 0)
          {
            report(stdout, GT_("writing message text\n"));
            release_sink(ctl);
            return(PS_IOERR);
          }
          else if (outlevel >= O_VERBOSE && !isafile(1))
          {
            fputc('*', stdout);
            fflush(stdout);
          }
      }
    }

    return(PS_SUCCESS);
}

void init_transact(const struct method *proto)
/* initialize state for the send and receive functions */
{
    tagnum = 0;
    tag[0] = '\0';      /* nuke any tag hanging out from previous query */
    protocol = (struct method *)proto;
}

static void enshroud(char *buf)
/* shroud a password in the given buffer */
{
    char *cp;

    if (shroud[0] && (cp = strstr(buf, shroud)))
    {
       char    *sp;

       sp = cp + strlen(shroud);
       *cp++ = '*';
       while (*sp)
           *cp++ = *sp++;
       *cp = '\0';
    }
}

#if defined(HAVE_STDARG_H)
void gen_send(int sock, const char *fmt, ... )
#else
void gen_send(sock, fmt, va_alist)
int sock;         /* socket to which server is connected */
const char *fmt;  /* printf-style format */
va_dcl
#endif
/* assemble command in printf(3) style and send to the server */
{
    char buf [MSGBUFSIZE+1];
    va_list ap;

    if (protocol->tagged && !suppress_tags)
      (void) sprintf(buf, "%s ", GENSYM);
    else
      buf[0] = '\0';

#if defined(HAVE_STDARG_H)
    va_start(ap, fmt);
#else
    va_start(ap);
#endif
#ifdef HAVE_VSNPRINTF
    vsnprintf(buf + strlen(buf), sizeof(buf)-strlen(buf), fmt, ap);
#else
    vsprintf(buf + strlen(buf), fmt, ap);
#endif
    va_end(ap);

#ifdef HAVE_SNPRINTF
    snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "\r\n");
#else
    strcat(buf, "\r\n");
#endif /* HAVE_SNPRINTF */
    SockWrite(sock, buf, strlen(buf));

    if (outlevel >= O_MONITOR)
    {
      enshroud(buf);
      buf[strlen(buf)-2] = '\0';
      report(stdout, "%s> %s\n", protocol->name, buf);
    }
}

int gen_recv(sock, buf, size)
/* get one line of input from the server */
int sock;   /* socket to which server is connected */
char *buf;  /* buffer to receive input */
int size;   /* length of buffer */
{
    int oldphase = phase;     /* we don't have to be re-entrant */

    phase = SERVER_WAIT;
    set_timeout(mytimeout);
    if (SockRead(sock, buf, size) == -1)
    {
      set_timeout(0);
      phase = oldphase;
      if(isidletimeout())
      {
        resetidletimeout();
        return(PS_IDLETIMEOUT);
      }
      else
        return(PS_SOCKET);
    }
    else
    {
      set_timeout(0);
      if (buf[strlen(buf)-1] == '\n')
          buf[strlen(buf)-1] = '\0';
      if (buf[strlen(buf)-1] == '\r')
          buf[strlen(buf)-1] = '\0';
      if (outlevel >= O_MONITOR)
          report(stdout, "%s< %s\n", protocol->name, buf);
      phase = oldphase;
      return(PS_SUCCESS);
    }
}

#if defined(HAVE_STDARG_H)
int gen_transact(int sock, const char *fmt, ... )
#else
int gen_transact(int sock, fmt, va_alist)
int sock;         /* socket to which server is connected */
const char *fmt;  /* printf-style format */
va_dcl
#endif
/* assemble command in printf(3) style, send to server, accept a response */
{
    int ok;
    char buf [MSGBUFSIZE+1];
    va_list ap;
    int oldphase = phase;     /* we don't have to be re-entrant */

    phase = SERVER_WAIT;

    if (protocol->tagged && !suppress_tags)
      (void) sprintf(buf, "%s ", GENSYM);
    else
      buf[0] = '\0';

#if defined(HAVE_STDARG_H)
    va_start(ap, fmt) ;
#else
    va_start(ap);
#endif
#ifdef HAVE_VSNPRINTF
    vsnprintf(buf + strlen(buf), sizeof(buf)-strlen(buf), fmt, ap);
#else
    vsprintf(buf + strlen(buf), fmt, ap);
#endif
    va_end(ap);

#ifdef HAVE_SNPRINTF
    snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "\r\n");
#else
    strcat(buf, "\r\n");
#endif /* HAVE_SNPRINTF */
    SockWrite(sock, buf, strlen(buf));

    if (outlevel >= O_MONITOR)
    {
      enshroud(buf);
      buf[strlen(buf)-2] = '\0';
      report(stdout, "%s> %s\n", protocol->name, buf);
    }

    /* we presume this does its own response echoing */
    ok = (protocol->parse_response)(sock, buf);

    phase = oldphase;
    return(ok);
}

/* transact.c ends here */

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