add free_field as standard for struct field
[mmh] / uip / spost.c
index 449d1a7..b8ae562 100644 (file)
@@ -18,6 +18,8 @@
 #include <h/utils.h>
 #include <unistd.h>
 #include <locale.h>
+#include <sysexits.h>
+#include <errno.h>
 
 #define MAX_SM_FIELD 1476  /* < largest hdr field sendmail will accept */
 
@@ -47,6 +49,7 @@ static struct swit switches[] = {
 #define HBCC  0x0010  /* don't output this header */
 #define HFCC  0x0020  /* FCC: type header */
 #define HIGN  0x0040  /* ignore this header */
+#define HDCC  0x0080  /* DCC: type header */
 
 /* flags for headers->set */
 #define MFRM  0x0001  /* we've seen a From: */
@@ -55,6 +58,7 @@ static struct swit switches[] = {
 #define MVIS  0x0008  /* we've seen sighted addrs */
 #define MINV  0x0010  /* we've seen blind addrs */
 #define MRDT  0x0020  /* we've seen a Resent-Date: */
+#define MFMM  0x0040  /* The Mail is From a Alternative-Mailbox Addresse */
 
 struct headers {
        char *value;
@@ -72,6 +76,7 @@ static struct headers NHeaders[] = {
        { "Subject", HSUB, 0 },
        { "To", HADR|HTRY, MVIS },
        { "Cc", HADR|HTRY, MVIS },
+       { "Dcc", HADR|HTRY|HDCC, MINV },
        { "Bcc", HADR|HTRY|HBCC, MINV },
        { "Message-Id", HBAD, 0 },
        { "Fcc", HFCC, 0 },
@@ -87,6 +92,7 @@ static struct headers RHeaders[] = {
        { "Resent-Subject", HSUB, 0 },
        { "Resent-To", HADR|HTRY, MVIS },
        { "Resent-Cc", HADR|HTRY, MVIS },
+       { "Resent-Dcc", HADR|HTRY|HDCC, MINV },
        { "Resent-Bcc", HADR|HTRY|HBCC, MINV },
        { "Resent-Message-Id", HBAD, 0 },
        { "Resent-Fcc", HFCC, 0 },
@@ -113,6 +119,9 @@ static char *tmpfil;
 static char *subject = NULL;  /* the subject field for BCC'ing */
 static char fccs[BUFSIZ] = "";
 struct mailname *bccs = NULL;  /* list of the bcc recipients */
+struct mailname *recipients = NULL;  /* list of the recipients */
+size_t recipientsc = 0;
+struct mailname *sender = NULL;
 
 static struct headers *hdrtab;  /* table for the message we're doing */
 static FILE *out;  /* output (temp) file */
@@ -128,14 +137,17 @@ static int putone(char *, int, int);
 static void process_fcc(char *);
 static void fcc(char *, char *);
 static void process_bccs(char *);
+static size_t do_aliasing(struct mailname *, struct mailname **);
 
 
 int
 main(int argc, char **argv)
 {
-       int state, compnum;
+       enum state state;
+       struct field f = free_field;
+       int compnum;
        char *cp, *msg = NULL, **argp, **arguments;
-       char *sargv[16], buf[BUFSIZ], name[NAMESZ];
+       char **sargv, buf[BUFSIZ];
        FILE *in;
 
        setlocale(LC_ALL, "");
@@ -151,19 +163,19 @@ main(int argc, char **argv)
                        switch (smatch(++cp, switches)) {
                        case AMBIGSW:
                                ambigsw(cp, switches);
-                               exit(1);
+                               exit(EX_USAGE);
                        case UNKWNSW:
-                               adios(NULL, "-%s unknown", cp);
+                               adios(EX_USAGE, NULL, "-%s unknown", cp);
 
                        case HELPSW:
                                snprintf(buf, sizeof(buf),
                                                "%s [switches] file",
                                                invo_name);
                                print_help(buf, switches, 1);
-                               exit(0);
+                               exit(argc == 2 ? EX_OK : EX_USAGE);
                        case VERSIONSW:
                                print_version(invo_name);
-                               exit(0);
+                               exit(argc == 2 ? EX_OK : EX_USAGE);
 
                        case DEBUGSW:
                                debug++;
@@ -181,17 +193,20 @@ main(int argc, char **argv)
                                continue;
                        }
                }
-               if (msg)
-                       adios(NULL, "only one message at a time!");
-               else
+               if (msg) {
+                       adios(EX_USAGE, NULL, "only one message at a time!");
+               } else {
                        msg = cp;
+               }
        }
 
-       if (!msg)
-               adios(NULL, "usage: %s [switches] file", invo_name);
+       if (!msg) {
+               adios(EX_USAGE, NULL, "usage: %s [switches] file", invo_name);
+       }
 
-       if ((in = fopen(msg, "r")) == NULL)
-               adios(msg, "unable to open");
+       if ((in = fopen(msg, "r")) == NULL) {
+               adios(EX_IOERR, msg, "unable to open");
+       }
 
        if (debug) {
                verbose++;
@@ -208,7 +223,7 @@ main(int argc, char **argv)
                for (ap=brkstring(dp=getcpy(cp), " ", "\n"); ap && *ap;
                                ap++) {
                        if ((state = alias(etcpath(*ap))) != AK_OK) {
-                               adios(NULL, "aliasing error in file %s: %s",
+                               adios(EX_IOERR, NULL, "aliasing error in file %s: %s",
                                                *ap, akerror(state));
                        }
                }
@@ -217,54 +232,54 @@ main(int argc, char **argv)
 
        hdrtab = (msgstate == normal) ? NHeaders : RHeaders;
 
-       for (compnum = 1, state = FLD;;) {
-               switch (state = m_getfld(state, name, buf, sizeof(buf), in)) {
-               case FLD:
+       for (compnum = 1, state = FLD2;;) {
+               switch (state = m_getfld2(state, &f, in)) {
+               case FLD2:
                        compnum++;
-                       putfmt(name, buf, out);
+                       putfmt(f.name, f.value, out);
                        continue;
 
-               case FLDPLUS:
-                       compnum++;
-                       cp = add(buf, cp);
-                       while (state == FLDPLUS) {
-                               state = m_getfld(state, name, buf,
-                                               sizeof(buf), in);
-                               cp = add(buf, cp);
-                       }
-                       putfmt(name, cp, out);
-                       free(cp);
-                       continue;
-
-               case BODY:
+               case BODY2:
                        finish_headers(out);
-                       fprintf(out, "\n%s", buf);
-                       while (state == BODY) {
-                               state = m_getfld(state, name, buf,
-                                               sizeof(buf), in);
-                               fputs(buf, out);
+                       fprintf(out, "\n%s", f.value);
+                       while ((state = m_getfld2(state, &f, in)) == BODY2) {
+                               fputs(f.value, out);
                        }
                        break;
 
-               case FILEEOF:
+               case FILEEOF2:
                        finish_headers(out);
                        break;
 
-               case LENERR:
-               case FMTERR:
-                       adios(NULL, "message format error in component #%d",
+               case LENERR2:
+               case FMTERR2:
+               case IOERR2:
+                       adios(EX_DATAERR, NULL, "message format error in component #%d",
                                        compnum);
 
                default:
-                       adios(NULL, "getfld() returned %d", state);
+                       adios(EX_SOFTWARE, NULL, "getfld() returned %d", state);
                }
                break;
        }
        fclose(in);
 
        if (debug) {
+               struct mailname *i = recipients;
                /* stop here */
-               exit(0);
+               puts("----EOM----");
+               while (i) {
+                       fputs(i->m_mbox, stdout);
+                       if (i->m_host) {
+                               fputs("@", stdout);
+                               fputs(i->m_host, stdout);
+                       }
+                       fputs("\n", stdout);
+                       i = i->m_next;
+                       mnfree(recipients);
+                       recipients = i;
+               }
+               exit(EX_OK);
        }
 
        fclose(out);
@@ -279,7 +294,7 @@ main(int argc, char **argv)
                if (!(msgflags & MVIS)) {
                        /* only Bcc rcpts: we're finished here */
                        unlink(tmpfil);
-                       exit(0);
+                       exit(EX_OK);
                }
        }
 
@@ -288,21 +303,41 @@ main(int argc, char **argv)
        ** the msg temp file as std in.
        */
        if (!freopen(tmpfil, "r", stdin)) {
-               adios(tmpfil, "can't reopen for sendmail");
+               adios(EX_IOERR, tmpfil, "can't reopen for sendmail");
        }
        unlink(tmpfil);
 
+       if (recipientsc == 0) {
+               adios(EX_DATAERR, NULL, "message has no recipients");
+       }
+
+       sargv = mh_xmalloc(sizeof(char **) * (recipientsc + 4));
+
        argp = sargv;
        *argp++ = "send-mail";
-       *argp++ = "-m";  /* send to me too */
-       *argp++ = "-t";  /* read msg for recipients */
        *argp++ = "-i";  /* don't stop on "." */
        if (verbose) {
                *argp++ = "-v";
        }
+
+       while (recipients != NULL) {
+               cp = getcpy(recipients->m_mbox);
+               if (recipients->m_host) {
+                       cp = add("@", cp);
+                       cp = add(recipients->m_host, cp);
+               }
+               *argp++ = cp;
+               cp = NULL;
+               recipients = recipients->m_next;
+       }
        *argp = NULL;
-       execv(sendmail, sargv);
-       adios(sendmail, "can't exec");
+       execvp(sendmail, sargv);
+
+       if (errno == E2BIG) {
+               adios(EX_DATAERR, sendmail, "too much arguments, probably to much recipients");
+       }
+
+       adios(EX_OSERR, sendmail, "can't exec");
        return -1;
 }
 
@@ -313,8 +348,13 @@ static void
 putfmt(char *name, char *str, FILE *out)
 {
        int i;
-       char *cp;
        struct headers *hdr;
+       struct mailname addr_start, *addr_end;
+       size_t addrc = 0;
+       ssize_t ret;
+
+       addr_end = &addr_start;
+       addr_end->m_next = NULL;
 
        /* remove leading whitespace */
        while (*str==' ' || *str=='\t') {
@@ -323,12 +363,17 @@ putfmt(char *name, char *str, FILE *out)
 
        if ((i = get_header(name, hdrtab)) == NOTOK) {
                /* no header we would care for */
-               if (mh_strcasecmp(name, attach_hdr)!=0 &&
-                               mh_strcasecmp(name, sign_hdr)!=0 &&
-                               mh_strcasecmp(name, enc_hdr)!=0) {
-                       /* push it through */
-                       fprintf(out, "%s: %s", name, str);
+               if (mh_strcasecmp(name, attach_hdr)==0) {
+                       return;
+               }
+               if (mh_strcasecmp(name, sign_hdr)==0) {
+                       return;
+               }
+               if (mh_strcasecmp(name, enc_hdr)==0) {
+                       return;
                }
+               /* push it through */
+               fprintf(out, "%s: %s", name, str);
                return;
        }
        /* it's one of the interesting headers */
@@ -351,69 +396,61 @@ putfmt(char *name, char *str, FILE *out)
                return;
        }
 
-       if (hdr->flags & HBCC) {
-               struct mailname *mp = NULL;
+       if (hdr->flags & HSUB) {
+               subject = getcpy(str);
+       }
 
-               /* Create list of Bcc addrs. */
-               while ((cp = getname(str))) {
-                       mp = getm(cp, NULL, 0, AD_HOST, NULL);
-                       mp->m_next = bccs;  /* push */
-                       bccs = mp;
-               }
+       if (!(hdr->flags & HADR)) {
+               fprintf(out, "%s: %s", name, str);
                return;
        }
 
-       if (aliasflg && hdr->flags & HTRY) {
-               /*
-               ** This header contains address(es) that we have to do
-               ** alias expansion on.  Because of the saved state in
-               ** getname we have to put all the addresses into a list.
-               **/
-               struct mailname *f = NULL;
+       if ((ret = getmboxes(str, &addr_end)) < 0) {
+               adios(EX_DATAERR, NULL, "can't parse address: %s", str);
+       }
+
+       addrc += ret;
+
+       if (aliasflg) {
+               addrc += do_aliasing(&addr_start, &addr_end);
+       }
+
+       if (hdr->flags & HBCC) {
+               addr_end->m_next = bccs;
+               bccs = addr_start.m_next;
+               return;
+       }
+
+       if (hdr->set & MFRM) {
                struct mailname *mp = NULL;
+               struct mailname *my = NULL;
 
-               while ((cp = getname(str))) {
-                       mp = getm(cp, NULL, 0, AD_HOST, NULL);
-                       if (!f) {
-                               f = mp;
-                               mp->m_next = mp;
-                       } else {
-                               mp->m_next = f->m_next;
-                               f->m_next = mp;
-                               f = mp;
+               /* needed because the address parser holds global state */
+               ismymbox(NULL);
+
+               for ( mp = addr_start.m_next; mp; mp = mp->m_next) {
+                       if (ismymbox(mp)) {
+                               msgflags |= MFMM;
+                               if (my == NULL) {
+                                       my = mp;
+                               }
                        }
                }
-               f = mp->m_next;
-               mp->m_next = NULL;
-               /* Now munch on the list, possibly expanding aliases */
-               putadr(name, f);
-               return;
+
+               if (addrc > 1) {
+                       sender = my;
+               }
        }
 
-       /*
-       ** The author(s) of spost decided that alias substitution wasn't
-       ** necessary for the non-HTRY headers.  Unfortunately, one of
-       ** those headers is "From:", and having alias substitution work on
-       ** that is extremely useful for someone with a lot of POP3 email
-       ** accounts or aliases.  post supports aliasing of "From:"...
-       **
-       ** Since "From:"-processing is incompletely implemented in this
-       ** unsupported and undocumented spost backend, I'm not going
-       ** to take the time to implement my new draft-From:-based email
-       ** address masquerading.  If I do ever implement it here, I'd almost
-       ** certainly want to implement "From:" line alias processing as well.
-       ** -- Dan Harkless <dan-nmh@dilvish.speed.net>
-       */
-       /*
-       ** Although there is no masquerading anymore in mmh, we might want
-       ** to have aliasing of From: addresses. Think about it.
-       ** -- meillo@marmaro.de  2012-02
-       */
+       if (!(hdr->flags & HDCC)) {
+               putadr(name, addr_start.m_next);
+       }
 
-       if (hdr->flags & HSUB) {
-               subject = getcpy(str);
+       if (hdr->flags & HTRY) {
+               addr_end->m_next = recipients;
+               recipients = addr_start.m_next;
+               recipientsc += i;
        }
-       fprintf(out, "%s: %s", name, str);
 }
 
 
@@ -432,11 +469,17 @@ finish_headers(FILE *out)
                fprintf(out, "%sDate: %s\n", resentstr, dtimenow());
        }
 
-       snprintf(from, sizeof(from), "%s@%s", getusername(), LocalName());
-       if ((cp = getfullname()) && *cp) {
-               snprintf(signature, sizeof(signature), "%s <%s>", cp, from);
+       if (sender != NULL) {
+               snprintf(signature, sizeof(signature), "%s", sender->m_text);
+       } else if ((cp = context_find("Default-From")) != NULL) {
+               snprintf(signature, sizeof(signature), "%s", cp);
        } else {
-               snprintf(signature, sizeof(signature), "%s", from);
+               snprintf(from, sizeof(from), "%s@%s", getusername(), LocalName());
+               if ((cp = getfullname()) && *cp) {
+                       snprintf(signature, sizeof(signature), "%s <%s>", cp, from);
+               } else {
+                       snprintf(signature, sizeof(signature), "%s", from);
+               }
        }
        if (!(msgflags & MFRM)) {
                fprintf(out, "%sFrom: %s\n", resentstr, signature);
@@ -445,14 +488,16 @@ finish_headers(FILE *out)
                ** Add a Sender: header because the From: header could
                ** be fake or contain multiple addresses.
                */
-               fprintf(out, "%sSender: %s\n", resentstr, from);
+               if (!(msgflags & MFMM) || sender != NULL) {
+                       fprintf(out, "%sSender: %s\n", resentstr, signature);
+               }
        }
        if (!(msgflags & MVIS)) {
                fprintf(out, "%sBcc: undisclosed-recipients:;\n", resentstr);
        }
        if (badmsg) {
                unlink(tmpfil);
-               adios(NULL, "re-format message and try again");
+               adios(EX_DATAERR, NULL, "re-format message and try again");
        }
 }
 
@@ -470,7 +515,6 @@ get_header(char *header, struct headers *table)
                        return (h - table);
                }
        }
-
        return NOTOK;
 }
 
@@ -483,9 +527,9 @@ get_header(char *header, struct headers *table)
 static void
 putadr(char *name, struct mailname *nl)
 {
-       struct mailname *mp, *mp2;
-       int linepos;
+       struct mailname *mp;
        char *cp;
+       int linepos;
        int namelen;
 
        fprintf(out, "%s: ", name);
@@ -497,38 +541,18 @@ putadr(char *name, struct mailname *nl)
                        fprintf(out, "\n%s: ", name);
                        linepos = namelen;
                }
-               if (mp->m_nohost) {
-                       /* a local name - see if it's an alias */
-                       cp = akvalue(mp->m_mbox);
-                       if (cp == mp->m_mbox) {
-                               /* wasn't an alias - use what the user typed */
-                               linepos = putone(mp->m_text, linepos, namelen);
-                       } else {
-                               /* an alias - expand it */
-                               while ((cp = getname(cp))) {
-                                       if (linepos > MAX_SM_FIELD) {
-                                               fprintf(out, "\n%s: ", name);
-                                               linepos = namelen;
-                                       }
-                                       mp2 = getm(cp, NULL, 0, AD_HOST, NULL);
-                                       if (akvisible()) {
-                                               mp2->m_pers = getcpy(mp->m_mbox);
-                                               linepos = putone(adrformat(mp2), linepos, namelen);
-                                       } else {
-                                               linepos = putone(mp2->m_text,
-                                                               linepos,
-                                                               namelen);
-                                       }
-                                       mnfree(mp2);
-                               }
+               if (mp->m_ingrp) {
+                       if (mp->m_gname != NULL) {
+                               cp = getcpy(mp->m_gname);
+                               cp = add(";", cp);
+                               linepos = putone(cp, linepos, namelen);
+                               free(cp);
+                               cp = NULL;
                        }
                } else {
-                       /* not a local name - use what the user typed */
                        linepos = putone(mp->m_text, linepos, namelen);
                }
-               mp2 = mp;
                mp = mp->m_next;
-               mnfree(mp2);
        }
        putc('\n', out);
 }
@@ -536,13 +560,13 @@ putadr(char *name, struct mailname *nl)
 static int
 putone(char *adr, int pos, int indent)
 {
-       register int len;
+       int len;
        static int linepos;
 
        len = strlen(adr);
-       if (pos == indent)
+       if (pos == indent) {
                linepos = pos;
-       else if (linepos+len > OUTPUTLINELEN) {
+       } else if (linepos+len > OUTPUTLINELEN) {
                fprintf(out, ",\n%*s", indent, "");
                linepos = indent;
                pos += indent + 2;
@@ -565,7 +589,7 @@ process_fcc(char *str)
        int state = 0;
 
        if (strlen(str)+strlen(fccs) > sizeof fccs /2) {
-               adios(NULL, "Too much Fcc data");
+               adios(EX_DATAERR, NULL, "Too much Fcc data");
        }
        /* todo: better have three states: SEPARATOR, PLUS, WORD */
        for (cp=pp=str; *cp; cp++) {
@@ -608,7 +632,7 @@ fcc(char *file, char *folders)
                fflush(stdout);
        }
        if (100+strlen(file)+strlen(folders) > sizeof cmd) {
-               adios(NULL, "Too much Fcc data");
+               adios(EX_DATAERR, NULL, "Too much Fcc data");
        }
        /* hack: read from /dev/null and refile(1) won't question us */
        snprintf(cmd, sizeof cmd, "</dev/null refile -link -file '%s' %s",
@@ -648,3 +672,48 @@ process_bccs(char *origmsg)
                }
        }
 }
+
+/*
+ * Do aliasing on a mailname linked list
+ * Begin at start->m_next
+ * End if m_next == NULL
+ * **end is set to the new end.
+ * Return the number of new mainames in the list
+ */
+
+static size_t
+do_aliasing(struct mailname *start, struct mailname **end)
+{
+       struct mailname *prev, *cur;
+       char *cp;
+       size_t i = 0;
+       ssize_t e;
+
+       prev = start;
+       cur = prev->m_next;
+
+       while (cur != NULL) {
+               if (cur->m_nohost) {
+                       cp = akvalue(cur->m_mbox);
+                       if (strcmp(cp, cur->m_mbox) != 0) {
+                               prev->m_next = cur->m_next;
+                               if ((e = getmboxes(cp, &prev)) < 0) {
+                                       goto error;
+                               }
+                               i += e;
+                               i -= 1;
+                               mnfree(cur);
+                       } else {
+                               prev = cur;
+                       }
+               } else {
+                       prev = cur;
+               }
+               cur = prev->m_next;
+       }
+       *end = prev;
+       return i;
+error:
+       adios(EX_CONFIG, NULL, "can't parse alias %s: %s", cur->m_mbox, cp);
+       return 0; /* not reached */
+}