/* * post.c -- enter messages into the mail transport system * * This code is Copyright (c) 2002, by the authors of nmh. See the * COPYRIGHT file in the root directory of the nmh distribution for * complete copyright information. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef TIME_WITH_SYS_TIME # include # include #else # ifdef TM_IN_SYS_TIME # include # else # include # endif #endif #ifdef SMTPMTS # include #endif #ifndef CYRUS_SASL # define SASLminc(a) (a) #else /* CYRUS_SASL */ # define SASLminc(a) 0 #endif /* CYRUS_SASL */ #ifndef TLS_SUPPORT # define TLSminc(a) (a) #else /* TLS_SUPPORT */ # define TLSminc(a) 0 #endif /* TLS_SUPPORT */ #define FCCS 10 /* max number of fccs allowed */ #define uptolow(c) ((isalpha(c) && isupper (c)) ? tolower (c) : c) /* In the following array of structures, the numeric second field of the structures (minchars) is apparently used like this: -# : Switch can be abbreviated to # characters; switch hidden in -help. 0 : Switch can't be abbreviated; switch shown in -help. # : Switch can be abbreviated to # characters; switch shown in -help. */ static struct swit switches[] = { #define ALIASW 0 { "alias aliasfile", 0 }, #define CHKSW 1 { "check", -5 }, /* interface from whom */ #define NCHKSW 2 { "nocheck", -7 }, /* interface from whom */ #define DEBUGSW 3 { "debug", -5 }, #define DISTSW 4 { "dist", -4 }, /* interface from dist */ #define FILTSW 5 { "filter filterfile", 0 }, #define NFILTSW 6 { "nofilter", 0 }, #define FRMTSW 7 { "format", 0 }, #define NFRMTSW 8 { "noformat", 0 }, #define LIBSW 9 { "library directory", -7 }, /* interface from send, whom */ #define MIMESW 10 { "mime", 0 }, #define NMIMESW 11 { "nomime", 0 }, #define MSGDSW 12 { "msgid", 0 }, #define NMSGDSW 13 { "nomsgid", 0 }, #define VERBSW 14 { "verbose", 0 }, #define NVERBSW 15 { "noverbose", 0 }, #define WATCSW 16 { "watch", 0 }, #define NWATCSW 17 { "nowatch", 0 }, #define WHOMSW 18 { "whom", -4 }, /* interface from whom */ #define WIDTHSW 19 { "width columns", 0 }, #define VERSIONSW 20 { "version", 0 }, #define HELPSW 21 { "help", 0 }, #define BITSTUFFSW 22 { "dashstuffing", -12 }, /* should we dashstuff BCC messages? */ #define NBITSTUFFSW 23 { "nodashstuffing", -14 }, #define MAILSW 24 { "mail", -4 }, /* specify MAIL smtp mode */ #define SAMLSW 25 { "saml", -4 }, /* specify SAML smtp mode */ #define SENDSW 26 { "send", -4 }, /* specify SEND smtp mode */ #define SOMLSW 27 { "soml", -4 }, /* specify SOML smtp mode */ #define ANNOSW 28 { "idanno number", -6 }, /* interface from send */ #define DLVRSW 29 { "deliver address-list", -7 }, #define CLIESW 30 { "client host", -6 }, #define SERVSW 31 { "server host", -6 }, /* specify alternate SMTP server */ #define SNOOPSW 32 { "snoop", -5 }, /* snoop the SMTP transaction */ #define FILLSW 33 { "fill-in file", -7 }, #define FILLUSW 34 { "fill-up", -7 }, #define PARTSW 35 { "partno", -6 }, #define QUEUESW 36 { "queued", -6 }, #define SASLSW 37 { "sasl", SASLminc(-4) }, #define SASLMECHSW 38 { "saslmech", SASLminc(-5) }, #define USERSW 39 { "user", SASLminc(-4) }, #define PORTSW 40 { "port server port name/number", 4 }, #define TLSSW 41 { "tls", TLSminc(-3) }, { NULL, 0 } }; struct headers { char *value; unsigned int flags; unsigned int set; }; /* * flags for headers->flags */ #define HNOP 0x0000 /* just used to keep .set around */ #define HBAD 0x0001 /* bad header - don't let it through */ #define HADR 0x0002 /* header has an address field */ #define HSUB 0x0004 /* Subject: header */ #define HTRY 0x0008 /* try to send to addrs on header */ #define HBCC 0x0010 /* don't output this header */ #define HMNG 0x0020 /* munge this header */ #define HNGR 0x0040 /* no groups allowed in this header */ #define HFCC 0x0080 /* FCC: type header */ #define HNIL 0x0100 /* okay for this header not to have addrs */ #define HIGN 0x0200 /* ignore this header */ #define HDCC 0x0400 /* another undocumented feature */ /* * flags for headers->set */ #define MFRM 0x0001 /* we've seen a From: */ #define MDAT 0x0002 /* we've seen a Date: */ #define MRFM 0x0004 /* we've seen a Resent-From: */ #define MVIS 0x0008 /* we've seen sighted addrs */ #define MINV 0x0010 /* we've seen blind addrs */ static struct headers NHeaders[] = { { "Return-Path", HBAD, 0 }, { "Received", HBAD, 0 }, { "Reply-To", HADR|HNGR, 0 }, { "From", HADR|HNGR, MFRM }, { "Sender", HADR|HBAD, 0 }, { "Date", HBAD, 0 }, { "Subject", HSUB, 0 }, { "To", HADR|HTRY, MVIS }, { "cc", HADR|HTRY, MVIS }, { "Bcc", HADR|HTRY|HBCC|HNIL, MINV }, { "Dcc", HADR|HTRY|HDCC|HNIL, MVIS }, /* sorta cc & bcc combined */ { "Message-ID", HBAD, 0 }, { "Fcc", HFCC, 0 }, { NULL, 0, 0 } }; static struct headers RHeaders[] = { { "Resent-Reply-To", HADR|HNGR, 0 }, { "Resent-From", HADR|HNGR, MRFM }, { "Resent-Sender", HADR|HBAD, 0 }, { "Resent-Date", HBAD, 0 }, { "Resent-Subject", HSUB, 0 }, { "Resent-To", HADR|HTRY, MVIS }, { "Resent-cc", HADR|HTRY, MVIS }, { "Resent-Bcc", HADR|HTRY|HBCC, MINV }, { "Resent-Message-ID", HBAD, 0 }, { "Resent-Fcc", HFCC, 0 }, { "Reply-To", HADR, 0 }, { "From", HADR|HNGR, MFRM }, { "Sender", HADR|HNGR, 0 }, { "Date", HNOP, MDAT }, { "To", HADR|HNIL, 0 }, { "cc", HADR|HNIL, 0 }, { "Bcc", HADR|HTRY|HBCC|HNIL, 0 }, { "Fcc", HIGN, 0 }, { NULL, 0, 0 } }; static short fccind = 0; /* index into fccfold[] */ static short outputlinelen = OUTPUTLINELEN; static int pfd = NOTOK; /* fd to write annotation list to */ static uid_t myuid= -1; /* my user id */ static gid_t mygid= -1; /* my group id */ static int recipients = 0; /* how many people will get a copy */ static int unkadr = 0; /* how many of those were unknown */ static int badadr = 0; /* number of bad addrs */ static int badmsg = 0; /* message has bad semantics */ static int verbose = 0; /* spell it out */ static int format = 1; /* format addresses */ static int mime = 0; /* use MIME-style encapsulations for Bcc */ static int msgid = 0; /* add msgid */ static int debug = 0; /* debugging post */ static int watch = 0; /* watch the delivery process */ static int whomsw = 0; /* we are whom not post */ static int checksw = 0; /* whom -check */ static int linepos=0; /* putadr()'s position on the line */ static int nameoutput=0; /* putadr() has output header name */ static int sasl=0; /* Use SASL auth for SMTP */ static char *saslmech=NULL; /* Force use of particular SASL mech */ static char *user=NULL; /* Authenticate as this user */ static char *port="smtp"; /* Name of server port for SMTP */ static int tls=0; /* Use TLS for encryption */ static unsigned msgflags = 0; /* what we've seen */ #define NORMAL 0 #define RESENT 1 static int msgstate = NORMAL; static time_t tclock = 0; /* the time we started (more or less) */ static SIGNAL_HANDLER hstat, istat, qstat, tstat; static char tmpfil[BUFSIZ]; static char bccfil[BUFSIZ]; static char from[BUFSIZ]; /* my network address */ static char signature[BUFSIZ]; /* my signature */ static char *filter = NULL; /* the filter for BCC'ing */ static char *subject = NULL; /* the subject field for BCC'ing */ static char *fccfold[FCCS]; /* foldernames for FCC'ing */ static struct headers *hdrtab; /* table for the message we're doing */ static struct mailname localaddrs={NULL}; /* local addrs */ static struct mailname netaddrs={NULL}; /* network addrs */ static struct mailname uuaddrs={NULL}; /* uucp addrs */ static struct mailname tmpaddrs={NULL}; /* temporary queue */ #ifdef SMTPMTS static int snoop = 0; static int smtpmode = S_MAIL; static char *clientsw = NULL; static char *serversw = NULL; extern struct smtp sm_reply; #endif /* SMTPMTS */ static char prefix[] = "----- =_aaaaaaaaaa"; static int fill_up = 0; static char *fill_in = NULL; static char *partno = NULL; static int queued = 0; extern boolean draft_from_masquerading; /* defined in mts.c */ /* * static prototypes */ static void putfmt (char *, char *, FILE *); static void start_headers (void); static void finish_headers (FILE *); static int get_header (char *, struct headers *); static int putadr (char *, char *, struct mailname *, FILE *, unsigned int); static void putgrp (char *, char *, FILE *, unsigned int); static int insert (struct mailname *); static void pl (void); static void anno (void); static int annoaux (struct mailname *); static void insert_fcc (struct headers *, unsigned char *); static void make_bcc_file (int); static void verify_all_addresses (int); static void chkadr (void); static void sigon (void); static void sigoff (void); static void p_refile (char *); static void fcc (char *, char *); static void die (char *, char *, ...); static void post (char *, int, int); static void do_text (char *file, int fd); static void do_an_address (struct mailname *, int); static void do_addresses (int, int); static int find_prefix (void); int main (int argc, char **argv) { int state, compnum, dashstuff = 0; char *cp, *msg = NULL, **argp, **arguments; char buf[BUFSIZ], name[NAMESZ]; FILE *in, *out; #ifdef LOCALE setlocale(LC_ALL, ""); #endif invo_name = r1bindex (argv[0], '/'); /* foil search of user profile/context */ if (context_foil (NULL) == -1) done (1); mts_init (invo_name); arguments = getarguments (invo_name, argc, argv, 0); argp = arguments; while ((cp = *argp++)) { if (*cp == '-') { switch (smatch (++cp, switches)) { case AMBIGSW: ambigsw (cp, switches); done (1); case UNKWNSW: adios (NULL, "-%s unknown", cp); case HELPSW: snprintf (buf, sizeof(buf), "%s [switches] file", invo_name); print_help (buf, switches, 0); done (1); case VERSIONSW: print_version(invo_name); done (1); case LIBSW: if (!(cp = *argp++) || *cp == '-') adios (NULL, "missing argument to %s", argp[-2]); /* create a minimal context */ if (context_foil (cp) == -1) done (1); continue; case ALIASW: if (!(cp = *argp++) || *cp == '-') adios (NULL, "missing argument to %s", argp[-2]); if ((state = alias (cp)) != AK_OK) adios (NULL, "aliasing error in %s - %s", cp, akerror (state)); continue; case CHKSW: checksw++; continue; case NCHKSW: checksw = 0; continue; case DEBUGSW: debug++; continue; case DISTSW: msgstate = RESENT; continue; case FILTSW: if (!(filter = *argp++) || *filter == '-') adios (NULL, "missing argument to %s", argp[-2]); mime = 0; continue; case NFILTSW: filter = NULL; continue; case FRMTSW: format++; continue; case NFRMTSW: format = 0; continue; case BITSTUFFSW: dashstuff = 1; continue; case NBITSTUFFSW: dashstuff = -1; continue; case MIMESW: mime++; filter = NULL; continue; case NMIMESW: mime = 0; continue; case MSGDSW: msgid++; continue; case NMSGDSW: msgid = 0; continue; case VERBSW: verbose++; continue; case NVERBSW: verbose = 0; continue; case WATCSW: watch++; continue; case NWATCSW: watch = 0; continue; case WHOMSW: whomsw++; continue; case WIDTHSW: if (!(cp = *argp++) || *cp == '-') adios (NULL, "missing argument to %s", argp[-2]); if ((outputlinelen = atoi (cp)) < 10) adios (NULL, "impossible width %d", outputlinelen); continue; case ANNOSW: if (!(cp = *argp++) || *cp == '-') adios (NULL, "missing argument to %s", argp[-2]); if ((pfd = atoi (cp)) <= 2) adios (NULL, "bad argument %s %s", argp[-2], cp); continue; case DLVRSW: if (!(cp = *argp++) || *cp == '-') adios (NULL, "missing argument to %s", argp[-2]); continue; #ifndef SMTPMTS case CLIESW: case SERVSW: if (!(cp = *argp++) || *cp == '-') adios (NULL, "missing argument to %s", argp[-2]); continue; case SNOOPSW: continue; #else /* SMTPMTS */ case MAILSW: smtpmode = S_MAIL; continue; case SAMLSW: smtpmode = S_SAML; continue; case SOMLSW: smtpmode = S_SOML; continue; case SENDSW: smtpmode = S_SEND; continue; case CLIESW: if (!(clientsw = *argp++) || *clientsw == '-') adios (NULL, "missing argument to %s", argp[-2]); continue; case SERVSW: if (!(serversw = *argp++) || *serversw == '-') adios (NULL, "missing argument to %s", argp[-2]); continue; case SNOOPSW: snoop++; continue; #endif /* SMTPMTS */ case FILLSW: if (!(fill_in = *argp++) || *fill_in == '-') adios (NULL, "missing argument to %s", argp[-2]); continue; case FILLUSW: fill_up++; continue; case PARTSW: if (!(partno = *argp++) || *partno == '-') adios (NULL, "missing argument to %s", argp[-2]); continue; case QUEUESW: queued++; continue; case SASLSW: sasl++; continue; case SASLMECHSW: if (!(saslmech = *argp++) || *saslmech == '-') adios (NULL, "missing argument to %s", argp[-2]); continue; case USERSW: if (!(user = *argp++) || *user == '-') adios (NULL, "missing argument to %s", argp[-2]); continue; case PORTSW: if (!(port = *argp++) || *port == '-') adios (NULL, "missing argument to %s", argp[-2]); continue; case TLSSW: tls++; continue; } } if (msg) adios (NULL, "only one message at a time!"); else msg = cp; } alias (AliasFile); if (!msg) adios (NULL, "usage: %s [switches] file", invo_name); if (outputlinelen < 10) adios (NULL, "impossible width %d", outputlinelen); if ((in = fopen (msg, "r")) == NULL) adios (msg, "unable to open"); start_headers (); if (debug) { verbose++; discard (out = stdout); /* XXX: reference discard() to help loader */ } else { if (whomsw) { if ((out = fopen (fill_in ? fill_in : "/dev/null", "w")) == NULL) adios ("/dev/null", "unable to open"); } else { char *cp = m_mktemp(m_maildir(invo_name), NULL, &out); if (cp == NULL) { cp = m_mktemp2(NULL, invo_name, NULL, &out); if (cp == NULL) { adios ("post", "unable to create temporary file"); } } strncpy(tmpfil, cp, sizeof(tmpfil)); chmod (tmpfil, 0600); } } hdrtab = msgstate == NORMAL ? NHeaders : RHeaders; for (compnum = 1, state = FLD;;) { switch (state = m_getfld (state, name, buf, sizeof(buf), in)) { case FLD: case FLDEOF: case FLDPLUS: compnum++; cp = add (buf, NULL); while (state == FLDPLUS) { state = m_getfld (state, name, buf, sizeof(buf), in); cp = add (buf, cp); } putfmt (name, cp, out); free (cp); if (state != FLDEOF) continue; finish_headers (out); break; case BODY: case BODYEOF: finish_headers (out); if (whomsw && !fill_in) break; fprintf (out, "\n%s", buf); while (state == BODY) { state = m_getfld (state, name, buf, sizeof(buf), in); fputs (buf, out); } break; case FILEEOF: finish_headers (out); break; case LENERR: case FMTERR: adios (NULL, "message format error in component #%d", compnum); default: adios (NULL, "getfld() returned %d", state); } break; } if (pfd != NOTOK) anno (); fclose (in); if (debug) { pl (); done (0); } else { fclose (out); } /* If we are doing a "whom" check */ if (whomsw) { if (!fill_up) verify_all_addresses (1); done (0); } if (msgflags & MINV) { make_bcc_file (dashstuff); if (msgflags & MVIS) { verify_all_addresses (verbose); post (tmpfil, 0, verbose); } post (bccfil, 1, verbose); unlink (bccfil); } else { post (tmpfil, 0, isatty (1)); } p_refile (tmpfil); unlink (tmpfil); if (verbose) printf (partno ? "Partial Message #%s Processed\n" : "Message Processed\n", partno); done (0); return 1; } /* * DRAFT GENERATION */ static void putfmt (char *name, char *str, FILE *out) { int count, grp, i, keep; char *cp, *pp, *qp; char namep[BUFSIZ]; struct mailname *mp = NULL, *np = NULL; struct headers *hdr; while (*str == ' ' || *str == '\t') str++; if (msgstate == NORMAL && uprf (name, "resent")) { advise (NULL, "illegal header line -- %s:", name); badmsg++; return; } if ((i = get_header (name, hdrtab)) == NOTOK) { fprintf (out, "%s: %s", name, str); return; } hdr = &hdrtab[i]; if (hdr->flags & HIGN) { if (fill_in) fprintf (out, "%s: %s", name, str); return; } if (hdr->flags & HBAD) { if (fill_in) fprintf (out, "%s: %s", name, str); else { advise (NULL, "illegal header line -- %s:", name); badmsg++; } return; } msgflags |= (hdr->set & ~(MVIS | MINV)); if (hdr->flags & HSUB) subject = subject ? add (str, add ("\t", subject)) : getcpy (str); if (hdr->flags & HFCC) { if (fill_in) { fprintf (out, "%s: %s", name, str); return; } if ((cp = strrchr(str, '\n'))) *cp = 0; for (cp = pp = str; (cp = strchr(pp, ',')); pp = cp) { *cp++ = 0; insert_fcc (hdr, pp); } insert_fcc (hdr, pp); return; } if (!(hdr->flags & HADR)) { fprintf (out, "%s: %s", name, str); return; } tmpaddrs.m_next = NULL; for (count = 0; (cp = getname (str)); count++) if ((mp = getm (cp, NULL, 0, AD_HOST, NULL))) { if (tmpaddrs.m_next) np->m_next = mp; else tmpaddrs.m_next = mp; np = mp; } else if (hdr->flags & HTRY) badadr++; else badmsg++; if (count < 1) { if (hdr->flags & HNIL) fprintf (out, "%s: %s", name, str); else { #ifdef notdef advise (NULL, "%s: field requires at least one address", name); badmsg++; #endif /* notdef */ } return; } nameoutput = linepos = 0; snprintf (namep, sizeof(namep), "%s%s", !fill_in && (hdr->flags & HMNG) ? "Original-" : "", name); for (grp = 0, mp = tmpaddrs.m_next; mp; mp = np) if (mp->m_nohost) { /* also used to test (hdr->flags & HTRY) */ /* The address doesn't include a host, so it might be an alias. */ pp = akvalue (mp->m_mbox); /* do mh alias substitution */ qp = akvisible () ? mp->m_mbox : ""; np = mp; if (np->m_gname) putgrp (namep, np->m_gname, out, hdr->flags); while ((cp = getname (pp))) { if (!(mp = getm (cp, NULL, 0, AD_HOST, NULL))) { badadr++; continue; } if (draft_from_masquerading && ((msgstate == RESENT) ? (hdr->set & MRFM) : (hdr->set & MFRM))) /* The user manually specified a [Resent-]From: address in their draft and the "masquerade:" line in mts.conf doesn't contain "draft_from", so we'll set things up to use the actual email address embedded in the draft [Resent-]From: (after alias substitution, and without the GECOS full name or angle brackets) as the envelope From:. */ strncpy(from, auxformat(mp, 0), sizeof(from) - 1); if (hdr->flags & HBCC) mp->m_bcc++; if (np->m_ingrp) mp->m_ingrp = np->m_ingrp; else if (mp->m_gname) putgrp (namep, mp->m_gname, out, hdr->flags); if (mp->m_ingrp) grp++; if (putadr (namep, qp, mp, out, hdr->flags)) msgflags |= (hdr->set & (MVIS | MINV)); else mnfree (mp); } mp = np; np = np->m_next; mnfree (mp); } else { /* Address includes a host, so no alias substitution is needed. */ if (draft_from_masquerading && ((msgstate == RESENT) ? (hdr->set & MRFM) : (hdr->set & MFRM))) /* The user manually specified a [Resent-]From: address in their draft and the "masquerade:" line in mts.conf doesn't contain "draft_from", so we'll set things up to use the actual email address embedded in the draft [Resent-]From: (after alias substitution, and without the GECOS full name or angle brackets) as the envelope From:. */ strncpy(from, auxformat(mp, 0), sizeof(from) - 1); if (hdr->flags & HBCC) mp->m_bcc++; if (mp->m_gname) putgrp (namep, mp->m_gname, out, hdr->flags); if (mp->m_ingrp) grp++; keep = putadr (namep, "", mp, out, hdr->flags); np = mp->m_next; if (keep) { mp->m_next = NULL; msgflags |= (hdr->set & (MVIS | MINV)); } else mnfree (mp); } if (grp > 0 && (hdr->flags & HNGR)) { advise (NULL, "%s: field does not allow groups", name); badmsg++; } if (linepos) { if (fill_in && grp > 0) putc (';', out); putc ('\n', out); } } static void start_headers (void) { unsigned char *cp; char myhost[BUFSIZ], sigbuf[BUFSIZ]; struct mailname *mp; myuid = getuid (); mygid = getgid (); time (&tclock); strncpy (from, adrsprintf (NULL, NULL), sizeof(from)); strncpy (myhost, LocalName (), sizeof(myhost)); for (cp = myhost; *cp; cp++) *cp = uptolow (*cp); if ((cp = getfullname ()) && *cp) { strncpy (sigbuf, cp, sizeof(sigbuf)); snprintf (signature, sizeof(signature), "%s <%s>", sigbuf, adrsprintf (NULL, NULL)); if ((cp = getname (signature)) == NULL) adios (NULL, "getname () failed -- you lose extraordinarily big"); if ((mp = getm (cp, NULL, 0, AD_HOST, NULL)) == NULL) adios (NULL, "bad signature '%s'", sigbuf); mnfree (mp); while (getname ("")) continue; } else { strncpy (signature, adrsprintf (NULL, NULL), sizeof(signature)); } } /* * Now that we've outputted the header fields in the draft * message, we will now output any remaining header fields * that we need to add/create. */ static void finish_headers (FILE *out) { switch (msgstate) { case NORMAL: if (whomsw && !fill_up) break; fprintf (out, "Date: %s\n", dtime (&tclock, 0)); if (msgid) fprintf (out, "Message-ID: <%d.%ld@%s>\n", (int) getpid (), (long) tclock, LocalName ()); if (msgflags & MFRM) { /* There was already a From: in the draft. Don't add one. */ if (!draft_from_masquerading) /* mts.conf didn't contain "masquerade:[...]draft_from[...]" so we'll reveal the user's actual account@thismachine address in a Sender: header (and use it as the envelope From: later). */ fprintf (out, "Sender: %s\n", from); } else /* Construct a From: header. */ fprintf (out, "From: %s\n", signature); if (whomsw) break; if (!(msgflags & MVIS)) fprintf (out, "Bcc: Blind Distribution List: ;\n"); break; case RESENT: if (!(msgflags & MDAT)) { advise (NULL, "message has no Date: header"); badmsg++; } if (!(msgflags & MFRM)) { advise (NULL, "message has no From: header"); badmsg++; } if (whomsw && !fill_up) break; fprintf (out, "Resent-Date: %s\n", dtime (&tclock, 0)); if (msgid) fprintf (out, "Resent-Message-ID: <%d.%ld@%s>\n", (int) getpid (), (long) tclock, LocalName ()); if (msgflags & MRFM) { /* There was already a Resent-From: in draft. Don't add one. */ if (!draft_from_masquerading) /* mts.conf didn't contain "masquerade:[...]draft_from[...]" so we'll reveal the user's actual account@thismachine address in a Sender: header (and use it as the envelope From: later). */ fprintf (out, "Resent-Sender: %s\n", from); } else /* Construct a Resent-From: header. */ fprintf (out, "Resent-From: %s\n", signature); if (whomsw) break; if (!(msgflags & MVIS)) fprintf (out, "Resent-Bcc: Blind Re-Distribution List: ;\n"); break; } if (badmsg) adios (NULL, "re-format message and try again"); if (!recipients) adios (NULL, "no addressees"); } static int get_header (char *header, struct headers *table) { struct headers *h; for (h = table; h->value; h++) if (!mh_strcasecmp (header, h->value)) return (h - table); return NOTOK; } static int putadr (char *name, char *aka, struct mailname *mp, FILE *out, unsigned int flags) { int len; char *cp; char buffer[BUFSIZ]; if (mp->m_mbox == NULL || ((flags & HTRY) && !insert (mp))) return 0; if ((!fill_in && (flags & (HBCC | HDCC))) || mp->m_ingrp) return 1; if (!nameoutput) { fprintf (out, "%s: ", name); linepos += (nameoutput = strlen (name) + 2); } if (*aka && mp->m_type != UUCPHOST && !mp->m_pers) mp->m_pers = getcpy (aka); if (format) { if (mp->m_gname && !fill_in) { snprintf (buffer, sizeof(buffer), "%s;", mp->m_gname); cp = buffer; } else { cp = adrformat (mp); } } else { cp = mp->m_text; } len = strlen (cp); if (linepos != nameoutput) { if (len + linepos + 2 > outputlinelen) fprintf (out, ",\n%*s", linepos = nameoutput, ""); else { fputs (", ", out); linepos += 2; } } fputs (cp, out); linepos += len; return (flags & HTRY); } static void putgrp (char *name, char *group, FILE *out, unsigned int flags) { int len; char *cp; if (!fill_in && (flags & HBCC)) return; if (!nameoutput) { fprintf (out, "%s: ", name); linepos += (nameoutput = strlen (name) + 2); if (fill_in) linepos -= strlen (group); } cp = fill_in ? group : concat (group, ";", NULL); len = strlen (cp); if (linepos > nameoutput) { if (len + linepos + 2 > outputlinelen) { fprintf (out, ",\n%*s", nameoutput, ""); linepos = nameoutput; } else { fputs (", ", out); linepos += 2; } } fputs (cp, out); linepos += len; } static int insert (struct mailname *np) { struct mailname *mp; if (np->m_mbox == NULL) return 0; for (mp = np->m_type == LOCALHOST ? &localaddrs : np->m_type == UUCPHOST ? &uuaddrs : &netaddrs; mp->m_next; mp = mp->m_next) if (!mh_strcasecmp (np->m_host, mp->m_next->m_host) && !mh_strcasecmp (np->m_mbox, mp->m_next->m_mbox) && np->m_bcc == mp->m_next->m_bcc) return 0; mp->m_next = np; recipients++; return 1; } static void pl (void) { int i; struct mailname *mp; printf ("-------\n\t-- Addresses --\nlocal:\t"); for (mp = localaddrs.m_next; mp; mp = mp->m_next) printf ("%s%s%s", mp->m_mbox, mp->m_bcc ? "[BCC]" : "", mp->m_next ? ",\n\t" : ""); printf ("\nnet:\t"); for (mp = netaddrs.m_next; mp; mp = mp->m_next) printf ("%s%s@%s%s%s", mp->m_path ? mp->m_path : "", mp->m_mbox, mp->m_host, mp->m_bcc ? "[BCC]" : "", mp->m_next ? ",\n\t" : ""); printf ("\nuucp:\t"); for (mp = uuaddrs.m_next; mp; mp = mp->m_next) printf ("%s!%s%s%s", mp->m_host, mp->m_mbox, mp->m_bcc ? "[BCC]" : "", mp->m_next ? ",\n\t" : ""); printf ("\n\t-- Folder Copies --\nfcc:\t"); for (i = 0; i < fccind; i++) printf ("%s%s", fccfold[i], i + 1 < fccind ? ",\n\t" : ""); printf ("\n"); } static void anno (void) { struct mailname *mp; for (mp = localaddrs.m_next; mp; mp = mp->m_next) if (annoaux (mp) == NOTOK) goto oops; for (mp = netaddrs.m_next; mp; mp = mp->m_next) if (annoaux (mp) == NOTOK) goto oops; for (mp = uuaddrs.m_next; mp; mp = mp->m_next) if (annoaux (mp) == NOTOK) break; oops: ; close (pfd); pfd = NOTOK; } static int annoaux (struct mailname *mp) { int i; char buffer[BUFSIZ]; snprintf (buffer, sizeof(buffer), "%s\n", adrformat (mp)); i = strlen (buffer); return (write (pfd, buffer, i) == i ? OK : NOTOK); } static void insert_fcc (struct headers *hdr, unsigned char *pp) { unsigned char *cp; for (cp = pp; isspace (*cp); cp++) continue; for (pp += strlen (pp) - 1; pp > cp && isspace (*pp); pp--) continue; if (pp >= cp) *++pp = 0; if (*cp == 0) return; if (fccind >= FCCS) adios (NULL, "too many %ss", hdr->value); fccfold[fccind++] = getcpy (cp); } /* * BCC GENERATION */ static void make_bcc_file (int dashstuff) { int fd, i; pid_t child_id; char *vec[6]; FILE *out; char *tfile = NULL; tfile = m_mktemp2(NULL, "bccs", NULL, &out); if (tfile == NULL) adios("bcc", "unable to create temporary file"); chmod (bccfil, 0600); strncpy (bccfil, tfile, sizeof(bccfil)); fprintf (out, "Date: %s\n", dtime (&tclock, 0)); if (msgid) fprintf (out, "Message-ID: <%d.%ld@%s>\n", (int) getpid (), (long) tclock, LocalName ()); if (msgflags & MFRM) { /* There was already a From: in the draft. Don't add one. */ if (!draft_from_masquerading) /* mts.conf didn't contain "masquerade:[...]draft_from[...]" so we'll reveal the user's actual account@thismachine address in a Sender: header (and use it as the envelope From: later). */ fprintf (out, "Sender: %s\n", from); } else /* Construct a From: header. */ fprintf (out, "From: %s\n", signature); if (subject) fprintf (out, "Subject: %s", subject); fprintf (out, "BCC:\n"); /* * Use MIME encapsulation for Bcc messages */ if (mime) { char *cp; /* * Check if any lines in the message clash with the * prefix for the MIME multipart separator. If there * is a clash, increment one of the letters in the * prefix and check again. */ if ((cp = strchr(prefix, 'a')) == NULL) adios (NULL, "lost prefix start"); while (find_prefix () == NOTOK) { if (*cp < 'z') (*cp)++; else if (*++cp == 0) adios (NULL, "can't find a unique delimiter string"); else (*cp)++; } fprintf (out, "%s: %s\n%s: multipart/digest; boundary=\"", VRSN_FIELD, VRSN_VALUE, TYPE_FIELD); fprintf (out, "%s\"\n\n--%s\n\n", prefix, prefix); } else { fprintf (out, "\n------- Blind-Carbon-Copy\n\n"); } fflush (out); /* * Do mhl filtering of Bcc messages instead * of MIME encapsulation. */ if (filter != NULL) { vec[0] = r1bindex (mhlproc, '/'); for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++) sleep (5); switch (child_id) { case NOTOK: adios ("fork", "unable to"); case OK: dup2 (fileno (out), 1); i = 1; vec[i++] = "-forward"; vec[i++] = "-form"; vec[i++] = filter; vec[i++] = tmpfil; /* was the flag -[no]dashstuffing specified? */ if (dashstuff > 0) vec[i++] = "-dashstuffing"; else if (dashstuff < 0) vec[i++] = "-nodashstuffing"; vec[i] = NULL; execvp (mhlproc, vec); fprintf (stderr, "unable to exec "); perror (mhlproc); _exit (-1); default: pidXwait (child_id, mhlproc); break; } } else { if ((fd = open (tmpfil, O_RDONLY)) == NOTOK) adios (tmpfil, "unable to re-open"); /* * If using MIME encapsulation, or if the -nodashstuffing * flag was given, then just copy message. Else do * RFC934 quoting (dashstuffing). */ if (mime || dashstuff < 0) cpydata (fd, fileno (out), tmpfil, bccfil); else cpydgst (fd, fileno (out), tmpfil, bccfil); close (fd); } fseek (out, 0L, SEEK_END); if (mime) fprintf (out, "\n--%s--\n", prefix); else fprintf (out, "\n------- End of Blind-Carbon-Copy\n"); fclose (out); } /* * Scan message to check if any lines clash with * the prefix of the MIME multipart separator. */ static int find_prefix (void) { int result = OK; unsigned char buffer[BUFSIZ]; FILE *in; if ((in = fopen (tmpfil, "r")) == NULL) adios (tmpfil, "unable to re-open"); while (fgets (buffer, sizeof(buffer) - 1, in)) if (buffer[0] == '-' && buffer[1] == '-') { unsigned char *cp; for (cp = buffer + strlen (buffer) - 1; cp >= buffer; cp--) if (!isspace (*cp)) break; *++cp = '\0'; if (strcmp (buffer + 2, prefix) == 0) { result = NOTOK; break; } } fclose (in); return result; } #define plural(x) (x == 1 ? "" : "s") static void chkadr (void) { if (badadr && unkadr) die (NULL, "%d address%s unparsable, %d addressee%s undeliverable", badadr, plural (badadr), unkadr, plural (badadr)); if (badadr) die (NULL, "%d address%s unparsable", badadr, plural (badadr)); if (unkadr) die (NULL, "%d addressee%s undeliverable", unkadr, plural (unkadr)); } static void do_addresses (int bccque, int talk) { int retval; int state; struct mailname *lp; state = 0; for (lp = localaddrs.m_next; lp; lp = lp->m_next) if (lp->m_bcc ? bccque : !bccque) { if (talk && !state) printf (" -- Local Recipients --\n"); do_an_address (lp, talk); state++; } state = 0; for (lp = uuaddrs.m_next; lp; lp = lp->m_next) if (lp->m_bcc ? bccque : !bccque) { if (talk && !state) printf (" -- UUCP Recipients --\n"); do_an_address (lp, talk); state++; } state = 0; for (lp = netaddrs.m_next; lp; lp = lp->m_next) if (lp->m_bcc ? bccque : !bccque) { if (talk && !state) printf (" -- Network Recipients --\n"); do_an_address (lp, talk); state++; } chkadr (); #ifdef SMTPMTS if (rp_isbad (retval = sm_waend ())) die (NULL, "problem ending addresses; %s", rp_string (retval)); #endif /* SMTPMTS */ } /* * MTS-SPECIFIC INTERACTION */ /* * SENDMAIL/SMTP routines */ #ifdef SMTPMTS static void post (char *file, int bccque, int talk) { int fd, onex; int retval; onex = !(msgflags & MINV) || bccque; if (verbose) { if (msgflags & MINV) printf (" -- Posting for %s Recipients --\n", bccque ? "Blind" : "Sighted"); else printf (" -- Posting for All Recipients --\n"); } sigon (); if (rp_isbad (retval = sm_init (clientsw, serversw, port, watch, verbose, snoop, onex, queued, sasl, saslmech, user, tls)) || rp_isbad (retval = sm_winit (smtpmode, from))) die (NULL, "problem initializing server; %s", rp_string (retval)); do_addresses (bccque, talk && verbose); if ((fd = open (file, O_RDONLY)) == NOTOK) die (file, "unable to re-open"); do_text (file, fd); close (fd); fflush (stdout); sm_end (onex ? OK : DONE); sigoff (); if (verbose) { if (msgflags & MINV) printf (" -- %s Recipient Copies Posted --\n", bccque ? "Blind" : "Sighted"); else printf (" -- Recipient Copies Posted --\n"); } fflush (stdout); } /* Address Verification */ static void verify_all_addresses (int talk) { int retval; struct mailname *lp; sigon (); if (!whomsw || checksw) if (rp_isbad (retval = sm_init (clientsw, serversw, port, watch, verbose, snoop, 0, queued, sasl, saslmech, user, tls)) || rp_isbad (retval = sm_winit (smtpmode, from))) die (NULL, "problem initializing server; %s", rp_string (retval)); if (talk && !whomsw) printf (" -- Address Verification --\n"); if (talk && localaddrs.m_next) printf (" -- Local Recipients --\n"); for (lp = localaddrs.m_next; lp; lp = lp->m_next) do_an_address (lp, talk); if (talk && uuaddrs.m_next) printf (" -- UUCP Recipients --\n"); for (lp = uuaddrs.m_next; lp; lp = lp->m_next) do_an_address (lp, talk); if (talk && netaddrs.m_next) printf (" -- Network Recipients --\n"); for (lp = netaddrs.m_next; lp; lp = lp->m_next) do_an_address (lp, talk); chkadr (); if (talk && !whomsw) printf (" -- Address Verification Successful --\n"); if (!whomsw || checksw) sm_end (DONE); fflush (stdout); sigoff (); } static void do_an_address (struct mailname *lp, int talk) { int retval; char *mbox, *host; char addr[BUFSIZ]; switch (lp->m_type) { case LOCALHOST: mbox = lp->m_mbox; host = lp->m_host; strncpy (addr, mbox, sizeof(addr)); break; case UUCPHOST: mbox = auxformat (lp, 0); host = NULL; snprintf (addr, sizeof(addr), "%s!%s", lp->m_host, lp->m_mbox); break; default: /* let SendMail decide if the host is bad */ mbox = lp->m_mbox; host = lp->m_host; snprintf (addr, sizeof(addr), "%s at %s", mbox, host); break; } if (talk) printf (" %s%s", addr, whomsw && lp->m_bcc ? "[BCC]" : ""); if (whomsw && !checksw) { putchar ('\n'); return; } if (talk) printf (": "); fflush (stdout); switch (retval = sm_wadr (mbox, host, lp->m_type != UUCPHOST ? lp->m_path : NULL)) { case RP_OK: if (talk) printf ("address ok\n"); break; case RP_NO: case RP_USER: if (!talk) fprintf (stderr, " %s: ", addr); fprintf (talk ? stdout : stderr, "loses; %s\n", rp_string (retval)); unkadr++; break; default: if (!talk) fprintf (stderr, " %s: ", addr); die (NULL, "unexpected response; %s", rp_string (retval)); } fflush (stdout); } static void do_text (char *file, int fd) { int retval, state; char buf[BUFSIZ]; lseek (fd, (off_t) 0, SEEK_SET); while ((state = read (fd, buf, sizeof(buf))) > 0) { if (rp_isbad (retval = sm_wtxt (buf, state))) die (NULL, "problem writing text; %s\n", rp_string (retval)); } if (state == NOTOK) die (file, "problem reading from"); switch (retval = sm_wtend ()) { case RP_OK: break; case RP_NO: case RP_NDEL: die (NULL, "posting failed; %s", rp_string (retval)); default: die (NULL, "unexpected response; %s", rp_string (retval)); } } #endif /* SMTPMTS */ /* * SIGNAL HANDLING */ static RETSIGTYPE sigser (int i) { #ifndef RELIABLE_SIGNALS SIGNAL (i, SIG_IGN); #endif unlink (tmpfil); if (msgflags & MINV) unlink (bccfil); #ifdef SMTPMTS if (!whomsw || checksw) sm_end (NOTOK); #endif /* SMTPMTS */ done (1); } static void sigon (void) { if (debug) return; hstat = SIGNAL2 (SIGHUP, sigser); istat = SIGNAL2 (SIGINT, sigser); qstat = SIGNAL2 (SIGQUIT, sigser); tstat = SIGNAL2 (SIGTERM, sigser); } static void sigoff (void) { if (debug) return; SIGNAL (SIGHUP, hstat); SIGNAL (SIGINT, istat); SIGNAL (SIGQUIT, qstat); SIGNAL (SIGTERM, tstat); } /* * FCC INTERACTION */ static void p_refile (char *file) { int i; if (fccind == 0) return; if (verbose) printf (" -- Filing Folder Copies --\n"); for (i = 0; i < fccind; i++) fcc (file, fccfold[i]); if (verbose) printf (" -- Folder Copies Filed --\n"); } /* * Call the `fileproc' to add the file to the folder. */ static void fcc (char *file, char *folder) { pid_t child_id; int i, status; char fold[BUFSIZ]; if (verbose) printf (" %sFcc %s: ", msgstate == RESENT ? "Resent-" : "", folder); fflush (stdout); for (i = 0; (child_id = fork ()) == NOTOK && i < 5; i++) sleep (5); switch (child_id) { case NOTOK: if (!verbose) fprintf (stderr, " %sFcc %s: ", msgstate == RESENT ? "Resent-" : "", folder); fprintf (verbose ? stdout : stderr, "no forks, so not ok\n"); break; case OK: /* see if we need to add `+' */ snprintf (fold, sizeof(fold), "%s%s", *folder == '+' || *folder == '@' ? "" : "+", folder); /* now exec the fileproc */ execlp (fileproc, r1bindex (fileproc, '/'), "-link", "-file", file, fold, NULL); _exit (-1); default: if ((status = pidwait (child_id, OK))) { if (!verbose) fprintf (stderr, " %sFcc %s: ", msgstate == RESENT ? "Resent-" : "", folder); pidstatus (status, verbose ? stdout : stderr, NULL); } else { if (verbose) printf ("folder ok\n"); } } fflush (stdout); } /* * TERMINATION */ static void die (char *what, char *fmt, ...) { va_list ap; unlink (tmpfil); if (msgflags & MINV) unlink (bccfil); #ifdef SMTPMTS if (!whomsw || checksw) sm_end (NOTOK); #endif /* SMTPMTS */ va_start(ap, fmt); advertise (what, NULL, fmt, ap); va_end(ap); done (1); }