X-Git-Url: http://git.marmaro.de/?p=mmh;a=blobdiff_plain;f=uip%2Frepl.c;h=bbc3cfe83be6a59f3d93ac5dc08ed2eddcc8fab7;hp=f6016deaf2f5892b932f1ee6b7581bd39eed91ff;hb=a87df3543d3bc128ba4079d1f95638476ba5ca50;hpb=ced6090a330d3d83d0bce709f756aa3d7d65fea4 diff --git a/uip/repl.c b/uip/repl.c index f6016de..bbc3cfe 100644 --- a/uip/repl.c +++ b/uip/repl.c @@ -8,65 +8,55 @@ #include #include - +#include +#include +#include /* L_SET */ +#include +#include +#include +#include +#include +#include static struct swit switches[] = { #define GROUPSW 0 { "group", 0 }, #define NGROUPSW 1 - { "nogroup", 0 }, + { "nogroup", 2 }, #define ANNOSW 2 { "annotate", 0 }, #define NANNOSW 3 - { "noannotate", 0 }, + { "noannotate", 2 }, #define CCSW 4 { "cc all|to|cc|me", 0 }, #define NCCSW 5 - { "nocc type", 0 }, + { "nocc type", 2 }, #define EDITRSW 6 { "editor editor", 0 }, -#define NEDITSW 7 - { "noedit", 0 }, -#define FCCSW 8 - { "fcc folder", 0 }, -#define FILTSW 9 +#define FILTSW 7 { "filter filterfile", 0 }, -#define FORMSW 10 +#define NFILTSW 8 + { "nofilter", 2 }, +#define FORMSW 9 { "form formfile", 0 }, -#define FRMTSW 11 - { "format", 5 }, -#define NFRMTSW 12 - { "noformat", 7 }, -#define INPLSW 13 - { "inplace", 0 }, -#define NINPLSW 14 - { "noinplace", 0 }, -#define MIMESW 15 +#define MIMESW 10 { "mime", 0 }, -#define NMIMESW 16 - { "nomime", 0 }, -#define QURYSW 17 +#define NMIMESW 11 + { "nomime", 2 }, +#define QURYSW 12 { "query", 0 }, -#define NQURYSW 18 - { "noquery", 0 }, -#define WHATSW 19 +#define NQURYSW 13 + { "noquery", 2 }, +#define WHATSW 14 { "whatnowproc program", 0 }, -#define NWHATSW 20 - { "nowhatnowproc", 0 }, -#define WIDTHSW 21 - { "width columns", 0 }, -#define VERSIONSW 22 - { "version", 0 }, -#define HELPSW 23 +#define VERSIONSW 15 + { "Version", 0 }, +#define HELPSW 16 { "help", 0 }, -#define FILESW 24 +#define FILESW 17 { "file file", 4 }, /* interface from msh */ - -#ifdef MHE -#define BILDSW 25 +#define BILDSW 18 { "build", 5 }, /* interface from mhe */ -#endif - { NULL, 0 } }; @@ -82,196 +72,188 @@ static struct swit ccswitches[] = { { NULL, 0 } }; -short ccto = -1; /* global for replsbr */ -short cccc = -1; -short ccme = -1; -short querysw = 0; +static short ccto = -1; +static short cccc = -1; +static short ccme = -1; +static short querysw = 0; + +static short groupreply = 0; /* Is this a group reply? */ + +static int mime = 0; /* include original as MIME part */ +static char *form = NULL; /* form (components) file */ +static char *filter = NULL; /* message filter file */ + +static int dftype=0; -short outputlinelen = OUTPUTLINELEN; -short groupreply = 0; /* Is this a group reply? */ +static char *badaddrs = NULL; +static char *dfhost = NULL; -int mime = 0; /* include original as MIME part */ -char *form = NULL; /* form (components) file */ -char *filter = NULL; /* message filter file */ -char *fcc = NULL; /* folders to add to Fcc: header */ +static struct mailname mq; +static struct format *fmt; + +static int ncomps = 0; /* # of interesting components */ + +static int dat[5]; /* aux. data for format routine */ + +static char *addrcomps[] = { + "from", + "sender", + "reply-to", + "to", + "cc", + "bcc", + "resent-from", + "resent-sender", + "resent-reply-to", + "resent-to", + "resent-cc", + "resent-bcc", + NULL +}; /* -** prototypes +** static prototypes */ -void docc (char *, int); +static void docc(char *, int); +static int insert(struct mailname *); +static void replfilter(FILE *, FILE *, char *); +static void replout(FILE *, char *, struct msgs *, int, + char *, char *); int -main (int argc, char **argv) +main(int argc, char **argv) { - int anot = 0, inplace = 1; - int nedit = 0, nwhat = 0; - char *cp, *cwd, *dp, *maildir, *file = NULL; + int anot = 0; + char *cp, *cwd, *maildir, *file = NULL; char *folder = NULL, *msg = NULL; char *ed = NULL, drft[BUFSIZ], buf[BUFSIZ]; char **argp, **arguments; struct msgs *mp = NULL; FILE *in; - -#ifdef MHE int buildsw = 0; -#endif /* MHE */ -#ifdef LOCALE + filter = getcpy(etcpath(mhlreply)); + setlocale(LC_ALL, ""); -#endif - invo_name = r1bindex (argv[0], '/'); + invo_name = mhbasename(argv[0]); /* read user profile/context */ context_read(); - arguments = getarguments (invo_name, argc, argv, 1); + arguments = getarguments(invo_name, argc, argv, 1); 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: [+folder] [msg] [switches]", invo_name); - print_help (buf, switches, 1); - done (0); - case VERSIONSW: - print_version(invo_name); - done (1); - - case GROUPSW: - groupreply++; - continue; - case NGROUPSW: - groupreply = 0; - continue; - - case ANNOSW: - anot++; - continue; - case NANNOSW: - anot = 0; - continue; - - case CCSW: - if (!(cp = *argp++) || *cp == '-') - adios (NULL, "missing argument to %s", argp[-2]); - docc (cp, 1); - continue; - case NCCSW: - if (!(cp = *argp++) || *cp == '-') - adios (NULL, "missing argument to %s", argp[-2]); - docc (cp, 0); - continue; - - case EDITRSW: - if (!(ed = *argp++) || *ed == '-') - adios (NULL, "missing argument to %s", argp[-2]); - nedit = 0; - continue; - case NEDITSW: - nedit++; - continue; - - case WHATSW: - if (!(whatnowproc = *argp++) || - *whatnowproc == '-') - adios (NULL, "missing argument to %s", argp[-2]); - nwhat = 0; - continue; -#ifdef MHE - case BILDSW: - buildsw++; /* fall... */ -#endif /* MHE */ - case NWHATSW: - nwhat++; - continue; - - case FCCSW: - if (!(cp = *argp++) || *cp == '-') - adios (NULL, "missing argument to %s", argp[-2]); - dp = NULL; - if (*cp == '@') - cp = dp = path (cp + 1, - TSUBCWF); - if (fcc) - fcc = add (", ", fcc); - fcc = add (cp, fcc); - if (dp) - free (dp); - continue; - - case FILESW: - if (file) - adios (NULL, "only one file at a time!"); - if (!(cp = *argp++) || *cp == '-') - adios (NULL, "missing argument to %s", argp[-2]); - file = path (cp, TFILE); - continue; - case FILTSW: - if (!(cp = *argp++) || *cp == '-') - adios (NULL, "missing argument to %s", argp[-2]); - filter = getcpy (etcpath (cp)); - mime = 0; - continue; - case FORMSW: - if (!(form = *argp++) || *form == '-') - adios (NULL, "missing argument to %s", argp[-2]); - continue; - - case FRMTSW: - filter = getcpy (etcpath (mhlreply)); - mime = 0; - continue; - case NFRMTSW: - filter = NULL; - continue; - - case INPLSW: - inplace++; - continue; - case NINPLSW: - inplace = 0; - continue; - - case MIMESW: - mime++; - filter = NULL; - continue; - case NMIMESW: - mime = 0; - continue; - - case QURYSW: - querysw++; - continue; - case NQURYSW: - querysw = 0; - 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; + switch (smatch(++cp, switches)) { + case AMBIGSW: + ambigsw(cp, switches); + exit(EX_USAGE); + case UNKWNSW: + adios(EX_USAGE, NULL, "-%s unknown", cp); + + case HELPSW: + snprintf(buf, sizeof(buf), "%s: [+folder] [msg] [switches]", invo_name); + print_help(buf, switches, 1); + exit(argc == 2 ? EX_OK : EX_USAGE); + case VERSIONSW: + print_version(invo_name); + exit(argc == 2 ? EX_OK : EX_USAGE); + + case GROUPSW: + groupreply++; + continue; + case NGROUPSW: + groupreply = 0; + continue; + + case ANNOSW: + anot++; + continue; + case NANNOSW: + anot = 0; + continue; + + case CCSW: + if (!(cp = *argp++) || *cp == '-') + adios(EX_USAGE, NULL, "missing argument to %s", + argp[-2]); + docc(cp, 1); + continue; + case NCCSW: + if (!(cp = *argp++) || *cp == '-') + adios(EX_USAGE, NULL, "missing argument to %s", + argp[-2]); + docc(cp, 0); + continue; + + case EDITRSW: + if (!(ed = *argp++) || *ed == '-') + adios(EX_USAGE, NULL, "missing argument to %s", + argp[-2]); + continue; + + case WHATSW: + if (!(whatnowproc = *argp++) || + *whatnowproc == '-') + adios(EX_USAGE, NULL, "missing argument to %s", + argp[-2]); + continue; + + case BILDSW: + buildsw++; + continue; + + case FILESW: + if (file) + adios(EX_USAGE, NULL, "only one file at a time!"); + if (!(cp = *argp++) || *cp == '-') + adios(EX_USAGE, NULL, "missing argument to %s", + argp[-2]); + file = getcpy(expanddir(cp)); + continue; + case FORMSW: + if (!(form = *argp++) || *form == '-') + adios(EX_USAGE, NULL, "missing argument to %s", + argp[-2]); + continue; + + case FILTSW: + if (!(cp = *argp++) || *cp == '-') + adios(EX_USAGE, NULL, "missing argument to %s", + argp[-2]); + filter = getcpy(etcpath(cp)); + continue; + case NFILTSW: + filter = NULL; + continue; + + case MIMESW: + mime++; + continue; + case NMIMESW: + mime = 0; + continue; + + case QURYSW: + querysw++; + continue; + case NQURYSW: + querysw = 0; + continue; + } } if (*cp == '+' || *cp == '@') { if (folder) - adios (NULL, "only one folder at a time!"); + adios(EX_USAGE, NULL, "only one folder at a time!"); else - folder = pluspath (cp); + folder = getcpy(expandfol(cp)); } else { if (msg) - adios (NULL, "only one message at a time!"); + adios(EX_USAGE, NULL, "only one message at a time!"); else msg = cp; } @@ -284,19 +266,19 @@ main (int argc, char **argv) if (ccme == -1) ccme = groupreply; - cwd = getcpy (pwd ()); + cwd = getcpy(pwd()); - if (!context_find ("path")) - free (path ("./", TFOLDER)); if (file && (msg || folder)) - adios (NULL, "can't mix files and folders/msgs"); + adios(EX_USAGE, NULL, "can't mix files and folders/msgs"); -#ifdef MHE - strncpy (drft, buildsw ? m_maildir ("reply") - : m_draft("new"), sizeof(drft)); -#else - strncpy (drft, m_draft("new"), sizeof(drft)); -#endif /* MHE */ + strncpy(drft, buildsw ? toabsdir("reply") : m_draft(seq_beyond), + sizeof(drft)); + /* + ** FIXME: (concerning MHE support (buildsw) only) + ** There's no check if the draft already exists. mmh has removed + ** this case by having the draft folder. I won't add code only to + ** handle this legacy issue for MHE. -- meillo@marmaro.de 2012-05 + */ if (file) { /* @@ -308,85 +290,451 @@ main (int argc, char **argv) ** We are replying to a message. */ if (!msg) - msg = "cur"; + msg = seq_cur; if (!folder) - folder = getfolder (1); - maildir = m_maildir (folder); + folder = getcurfol(); + maildir = toabsdir(folder); - if (chdir (maildir) == NOTOK) - adios (maildir, "unable to change directory to"); + if (chdir(maildir) == NOTOK) + adios(EX_OSERR, maildir, "unable to change directory to"); /* read folder and create message structure */ - if (!(mp = folder_read (folder))) - adios (NULL, "unable to read folder %s", folder); + if (!(mp = folder_read(folder))) + adios(EX_IOERR, NULL, "unable to read folder %s", folder); /* check for empty folder */ if (mp->nummsg == 0) - adios (NULL, "no messages in %s", folder); + adios(EX_DATAERR, NULL, "no messages in %s", folder); /* parse the message range/sequence/name and set SELECTED */ - if (!m_convert (mp, msg)) - done (1); - seq_setprev (mp); /* set the previous-sequence */ + if (!m_convert(mp, msg)) + exit(EX_SOFTWARE); + seq_setprev(mp); /* set the previous-sequence */ if (mp->numsel > 1) - adios (NULL, "only one message at a time!"); + adios(EX_USAGE, NULL, "only one message at a time!"); - context_replace (pfolder, folder); /* update current folder */ - seq_setcur (mp, mp->lowsel); /* update current message */ - seq_save (mp); /* synchronize sequences */ - context_save (); /* save the context file */ + context_replace(curfolder, folder); /* update current folder */ + seq_setcur(mp, mp->lowsel); /* update current message */ + seq_save(mp); /* synchronize sequences */ + context_save(); /* save the context file */ } - msg = file ? file : getcpy (m_name (mp->lowsel)); + msg = file ? file : getcpy(m_name(mp->lowsel)); - if ((in = fopen (msg, "r")) == NULL) - adios (msg, "unable to open"); + if ((in = fopen(msg, "r")) == NULL) + adios(EX_IOERR, msg, "unable to open"); /* find form (components) file */ if (!form) { if (groupreply) - form = etcpath (replgroupcomps); + form = etcpath(replgroupcomps); else - form = etcpath (replcomps); + form = etcpath(replcomps); } - replout (in, msg, drft, mp, outputlinelen, mime, form, filter, fcc); - fclose (in); + replout(in, drft, mp, mime, form, filter); + fclose(in); - if (nwhat) - done (0); - what_now (ed, nedit, NOUSE, drft, msg, 0, mp, - anot ? "Replied" : NULL, inplace, cwd); - done (1); - return 1; + if (buildsw) + exit(EX_OK); + what_now(ed, NOUSE, drft, msg, 0, mp, anot ? "Replied" : NULL, cwd); + return EX_OSERR; } -void -docc (char *cp, int ccflag) +static void +docc(char *cp, int ccflag) { - switch (smatch (cp, ccswitches)) { - case AMBIGSW: - ambigsw (cp, ccswitches); - done (1); - case UNKWNSW: - adios (NULL, "-%scc %s unknown", - ccflag ? "" : "no", cp); - - case CTOSW: - ccto = ccflag; - break; + switch (smatch(cp, ccswitches)) { + case AMBIGSW: + ambigsw(cp, ccswitches); + exit(EX_USAGE); + case UNKWNSW: + adios(EX_USAGE, NULL, "-%scc %s unknown", ccflag ? "" : "no", cp); + + case CTOSW: + ccto = ccflag; + break; + + case CCCSW: + cccc = ccflag; + break; + + case CMESW: + ccme = ccflag; + break; + + case CALSW: + ccto = cccc = ccme = ccflag; + break; + } +} - case CCCSW: - cccc = ccflag; - break; - case CMESW: - ccme = ccflag; - break; - case CALSW: - ccto = cccc = ccme = ccflag; + +static void +replout(FILE *inb, char *drft, struct msgs *mp, + int mime, char *form, char *filter) +{ + enum state state; + struct field f = free_field; + int i; + struct comp *cptr; + char **ap; + int char_read = 0, format_len, mask; + char *scanl; + unsigned char *cp; + FILE *out; + + mask = umask(~m_gmprot()); + if ((out = fopen(drft, "w")) == NULL) + adios(EX_CANTCREAT, drft, "unable to create"); + + umask(mask); + + /* get new format string */ + cp = new_fs(form, NULL); + format_len = strlen(cp); + + /* compile format string */ + ncomps = fmt_compile(cp, &fmt) + 1; + + for (ap = addrcomps; *ap; ap++) { + FINDCOMP(cptr, *ap); + if (cptr) + cptr->c_type |= CT_ADDR; + } + + /* + ** ignore any components killed by command line switches + */ + if (!ccto) { + FINDCOMP(cptr, "to"); + if (cptr) + cptr->c_name = ""; + } + if (!cccc) { + FINDCOMP(cptr, "cc"); + if (cptr) + cptr->c_name = ""; + } + if ((cp = getenv("USER"))) { + FINDCOMP(cptr, "user"); + if (cptr) + cptr->c_text = getcpy(cp); + } + if (!ccme) + ismymbox(NULL); + + /* + ** pick any interesting stuff out of msg "inb" + */ + for (state = FLD2;;) { + state = m_getfld2(state, &f, inb); + switch (state) { + case FLD2: + /* + ** if we're interested in this component, save + ** a pointer to the component text, then start + ** using our next free buffer as the component + ** temp buffer (buffer switching saves an extra + ** copy of the component text). + */ + if ((cptr = wantcomp[CHASH(f.name)])) { + do { + if (mh_strcasecmp(f.name, cptr->c_name)!=0) { + continue; + } + char_read += strlen(f.value); + if (!cptr->c_text) { + cptr->c_text = getcpy(f.value); + i = strlen(cptr->c_text) - 1; + if (cptr->c_text[i] == '\n') { + cptr->c_text[i] = '\0'; + } + } else { + cp = cptr->c_text; + i = strlen(cp) - 1; + if (cp[i] == '\n') { + if (cptr->c_type & CT_ADDR) { + cp[i] = '\0'; + cp = add(",\n\t", cp); + } else { + cp = add("\t", cp); + } + } + cptr->c_text = add(f.value, cp); + } + break; + } while ((cptr = cptr->c_next)); + } break; + + case LENERR2: + case FMTERR2: + case IOERR2: + case BODY2: + case FILEEOF2: + goto finished; + + default: + adios(EX_SOFTWARE, NULL, "m_getfld() returned %d", state); + } + } + + /* + ** format and output the header lines. + */ +finished: + + /* + ** if there's a "Subject" component, strip any "Re:"s off it + */ + FINDCOMP(cptr, "subject") + if (cptr && (cp = cptr->c_text)) { + char *sp = cp; + + for (;;) { + while (isspace(*cp)) + cp++; + if(uprf(cp, "re:")) + cp += 3; + else + break; + sp = cp; + } + if (sp != cptr->c_text) { + cp = cptr->c_text; + cptr->c_text = getcpy(sp); + free(cp); + } + } + i = format_len + char_read + 256; + scanl = mh_xmalloc((size_t) i + 2); + dat[0] = 0; + dat[1] = 0; + dat[2] = 0; + dat[3] = OUTPUTLINELEN; + dat[4] = 0; + fmt_scan(fmt, scanl, i, dat); + fputs(scanl, out); + if (badaddrs) { + fputs("\nrepl: bad addresses:\n", out); + fputs( badaddrs, out); + } + + /* Check if we should filter the message */ + if (filter) { + fflush(out); + if (ferror(out)) + adios(EX_IOERR, drft, "error writing"); + + replfilter(inb, out, filter); + } + + fflush(out); + if (ferror(out)) + adios(EX_IOERR, drft, "error writing"); + fclose(out); + + if (mime && mp) { + /* add an attachment header */ + char buffer[BUFSIZ]; + + snprintf(buffer, sizeof buffer, "+%s %s", + mp->foldpath, m_name(mp->lowsel)); + if (execprogl("anno", "anno", "-append", "-nodate", + drft, "-comp", attach_hdr, "-text", buffer, + (char *)NULL) != 0) { + advise(NULL, "unable to add attachment header"); + } + } + + /* return dynamically allocated buffers */ + free(scanl); +} + +static char *buf; /* our current working buffer */ +static char *bufend; /* end of working buffer */ +static char *last_dst; /* buf ptr at end of last call */ +static unsigned int bufsiz=0; /* current size of buf */ + +#define BUFINCR 512 /* how much to expand buf when if fills */ + +#define CPY(s) { cp = (s); while ((*dst++ = *cp++)) ; --dst; } + +/* +** check if there's enough room in buf for str. +** add more mem if needed +*/ +#define CHECKMEM(str) \ + if ((len = strlen(str)) >= bufend - dst) {\ + int i = dst - buf;\ + int n = last_dst - buf;\ + bufsiz += ((dst + len - bufend) / BUFINCR + 1) * BUFINCR;\ + buf = mh_xrealloc(buf, bufsiz);\ + dst = buf + i;\ + last_dst = buf + n;\ + bufend = buf + bufsiz;\ + } + + +/* +** fmt_scan will call this routine if the user includes the function +** "(formataddr {component})" in a format string. "orig" is the +** original contents of the string register. "str" is the address +** string to be formatted and concatenated onto orig. This routine +** returns a pointer to the concatenated address string. +** +** We try to not do a lot of malloc/copy/free's (which is why we +** don't call "getcpy") but still place no upper limit on the +** length of the result string. +** +** This routine is an override for the equally named one in sbr/fmt_addr.c. +** Don't delete it! +*/ +char * +formataddr(char *orig, char *str) +{ + int len; + char baddr[BUFSIZ], error[BUFSIZ]; + int isgroup; + char *dst; + char *cp; + char *sp; + struct mailname *mp = NULL; + + /* if we don't have a buffer yet, get one */ + if (bufsiz == 0) { + buf = mh_xmalloc(BUFINCR); + last_dst = buf; /* XXX */ + bufsiz = BUFINCR - 6; /* leave some slop */ + bufend = buf + bufsiz; + } + /* + ** If "orig" points to our buffer we can just pick up where we + ** left off. Otherwise we have to copy orig into our buffer. + */ + if (orig == buf) + dst = last_dst; + else if (!orig || !*orig) { + dst = buf; + *dst = '\0'; + } else { + dst = last_dst; /* XXX */ + CHECKMEM(orig); + CPY(orig); + } + + /* concatenate all the new addresses onto 'buf' */ + for (isgroup = 0; (cp = getname(str)); ) { + if ((mp = getm(cp, dfhost, dftype, AD_NAME, error)) == NULL) { + snprintf(baddr, sizeof(baddr), "\t%s -- %s\n", + cp, error); + badaddrs = add(baddr, badaddrs); + continue; + } + if (isgroup && (mp->m_gname || !mp->m_ingrp)) { + *dst++ = ';'; + isgroup = 0; + } + if (insert(mp)) { + /* if we get here we're going to add an address */ + if (dst != buf) { + *dst++ = ','; + *dst++ = ' '; + } + if (mp->m_gname) { + CHECKMEM(mp->m_gname); + CPY(mp->m_gname); + isgroup++; + } + sp = adrformat(mp); + CHECKMEM(sp); + CPY(sp); + } + } + + if (isgroup) + *dst++ = ';'; + + *dst = '\0'; + last_dst = dst; + return (buf); +} + + +static int +insert(struct mailname *np) +{ + char buffer[BUFSIZ]; + struct mailname *mp; + + if (np->m_mbox == NULL) + return 0; + + for (mp = &mq; 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)) + return 0; + } + if (!ccme && ismymbox(np)) + return 0; + + if (querysw) { + snprintf(buffer, sizeof(buffer), "Reply to %s? ", + adrformat(np)); + if (!gans(buffer, anoyes)) + return 0; + } + mp->m_next = np; + return 1; +} + + +/* +** Call mhl +** +** This function expects that argument out has been fflushed by the caller. +*/ +static void +replfilter(FILE *in, FILE *out, char *filter) +{ + int pid, n; + char *errstr; + + if (filter == NULL) + return; + + if (access(filter, R_OK) == NOTOK) + adios(EX_IOERR, filter, "unable to read"); + + rewind(in); + lseek(fileno(in), (off_t) 0, SEEK_SET); + + switch (pid = fork()) { + case NOTOK: + adios(EX_OSERR, "fork", "unable to"); + + case OK: + dup2(fileno(in), fileno(stdin)); + dup2(fileno(out), fileno(stdout)); + for (n=3; n