/* * Copyright (c) 1998 Sendmail, Inc. All rights reserved. * Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved. * Copyright (c) 1988, 1993 * The Regents of the University of California. All rights reserved. * * By using this file, you agree to the terms and conditions set * forth in the LICENSE file which can be found at the top level of * the sendmail distribution. * */ #ifndef lint static char sccsid[] = "@(#)readcf.c 8.238 (Berkeley) 1/28/1999"; #endif /* not lint */ # include "sendmail.h" # include #if NAMED_BIND # include #endif /* ** READCF -- read configuration file. ** ** This routine reads the configuration file and builds the internal ** form. ** ** The file is formatted as a sequence of lines, each taken ** atomically. The first character of each line describes how ** the line is to be interpreted. The lines are: ** Dxval Define macro x to have value val. ** Cxword Put word into class x. ** Fxfile [fmt] Read file for lines to put into ** class x. Use scanf string 'fmt' ** or "%s" if not present. Fmt should ** only produce one string-valued result. ** Hname: value Define header with field-name 'name' ** and value as specified; this will be ** macro expanded immediately before ** use. ** Sn Use rewriting set n. ** Rlhs rhs Rewrite addresses that match lhs to ** be rhs. ** Mn arg=val... Define mailer. n is the internal name. ** Args specify mailer parameters. ** Oxvalue Set option x to value. ** Pname=value Set precedence name to value. ** Vversioncode[/vendorcode] ** Version level/vendor name of ** configuration syntax. ** Kmapname mapclass arguments.... ** Define keyed lookup of a given class. ** Arguments are class dependent. ** Eenvar=value Set the environment value to the given value. ** ** Parameters: ** cfname -- configuration file name. ** safe -- TRUE if this is the system config file; ** FALSE otherwise. ** e -- the main envelope. ** ** Returns: ** none. ** ** Side Effects: ** Builds several internal tables. */ void readcf(cfname, safe, e) char *cfname; bool safe; register ENVELOPE *e; { FILE *cf; int ruleset = 0; char *q; struct rewrite *rwp = NULL; char *bp; auto char *ep; int nfuzzy; char *file; bool optional; int mid; register char *p; int sff = SFF_OPENASROOT; struct stat statb; char buf[MAXLINE]; char exbuf[MAXLINE]; char pvpbuf[MAXLINE + MAXATOM]; static char *null_list[1] = { NULL }; extern char **copyplist __P((char **, bool)); extern char *munchstring __P((char *, char **, int)); extern void fileclass __P((int, char *, char *, bool, bool)); extern void toomany __P((int, int)); extern void translate_dollars __P((char *)); extern void inithostmaps __P((void)); FileName = cfname; LineNumber = 0; if (DontLockReadFiles) sff |= SFF_NOLOCK; cf = safefopen(cfname, O_RDONLY, 0444, sff); if (cf == NULL) { syserr("cannot open"); finis(FALSE, EX_OSFILE); } if (fstat(fileno(cf), &statb) < 0) { syserr("cannot fstat"); finis(FALSE, EX_OSFILE); } if (!S_ISREG(statb.st_mode)) { syserr("not a plain file"); finis(FALSE, EX_OSFILE); } if (OpMode != MD_TEST && bitset(S_IWGRP|S_IWOTH, statb.st_mode)) { if (OpMode == MD_DAEMON || OpMode == MD_INITALIAS) fprintf(stderr, "%s: WARNING: dangerous write permissions\n", FileName); if (LogLevel > 0) sm_syslog(LOG_CRIT, NOQID, "%s: WARNING: dangerous write permissions", FileName); } #ifdef XLA xla_zero(); #endif while ((bp = fgetfolded(buf, sizeof buf, cf)) != NULL) { if (bp[0] == '#') { if (bp != buf) free(bp); continue; } /* do macro expansion mappings */ translate_dollars(bp); /* interpret this line */ errno = 0; switch (bp[0]) { case '\0': case '#': /* comment */ break; case 'R': /* rewriting rule */ for (p = &bp[1]; *p != '\0' && *p != '\t'; p++) continue; if (*p == '\0') { syserr("invalid rewrite line \"%s\" (tab expected)", bp); break; } /* allocate space for the rule header */ if (rwp == NULL) { RewriteRules[ruleset] = rwp = (struct rewrite *) xalloc(sizeof *rwp); } else { rwp->r_next = (struct rewrite *) xalloc(sizeof *rwp); rwp = rwp->r_next; } rwp->r_next = NULL; /* expand and save the LHS */ *p = '\0'; expand(&bp[1], exbuf, sizeof exbuf, e); rwp->r_lhs = prescan(exbuf, '\t', pvpbuf, sizeof pvpbuf, NULL, NULL); nfuzzy = 0; if (rwp->r_lhs != NULL) { register char **ap; rwp->r_lhs = copyplist(rwp->r_lhs, TRUE); /* count the number of fuzzy matches in LHS */ for (ap = rwp->r_lhs; *ap != NULL; ap++) { char *botch; botch = NULL; switch (**ap & 0377) { case MATCHZANY: case MATCHANY: case MATCHONE: case MATCHCLASS: case MATCHNCLASS: nfuzzy++; break; case MATCHREPL: botch = "$0-$9"; break; case CANONUSER: botch = "$:"; break; case CALLSUBR: botch = "$>"; break; case CONDIF: botch = "$?"; break; case CONDFI: botch = "$."; break; case HOSTBEGIN: botch = "$["; break; case HOSTEND: botch = "$]"; break; case LOOKUPBEGIN: botch = "$("; break; case LOOKUPEND: botch = "$)"; break; } if (botch != NULL) syserr("Inappropriate use of %s on LHS", botch); } } else { syserr("R line: null LHS"); rwp->r_lhs = null_list; } /* expand and save the RHS */ while (*++p == '\t') continue; q = p; while (*p != '\0' && *p != '\t') p++; *p = '\0'; expand(q, exbuf, sizeof exbuf, e); rwp->r_rhs = prescan(exbuf, '\t', pvpbuf, sizeof pvpbuf, NULL, NULL); if (rwp->r_rhs != NULL) { register char **ap; rwp->r_rhs = copyplist(rwp->r_rhs, TRUE); /* check no out-of-bounds replacements */ nfuzzy += '0'; for (ap = rwp->r_rhs; *ap != NULL; ap++) { char *botch; botch = NULL; switch (**ap & 0377) { case MATCHREPL: if ((*ap)[1] <= '0' || (*ap)[1] > nfuzzy) { syserr("replacement $%c out of bounds", (*ap)[1]); } break; case MATCHZANY: botch = "$*"; break; case MATCHANY: botch = "$+"; break; case MATCHONE: botch = "$-"; break; case MATCHCLASS: botch = "$="; break; case MATCHNCLASS: botch = "$~"; break; } if (botch != NULL) syserr("Inappropriate use of %s on RHS", botch); } } else { syserr("R line: null RHS"); rwp->r_rhs = null_list; } break; case 'S': /* select rewriting set */ expand(&bp[1], exbuf, sizeof exbuf, e); ruleset = strtorwset(exbuf, NULL, ST_ENTER); if (ruleset < 0) break; rwp = RewriteRules[ruleset]; if (rwp != NULL) { if (OpMode == MD_TEST || tTd(37, 1)) printf("WARNING: Ruleset %s has multiple definitions\n", &bp[1]); while (rwp->r_next != NULL) rwp = rwp->r_next; } break; case 'D': /* macro definition */ mid = macid(&bp[1], &ep); p = munchstring(ep, NULL, '\0'); define(mid, newstr(p), e); break; case 'H': /* required header line */ (void) chompheader(&bp[1], TRUE, NULL, e); break; case 'C': /* word class */ case 'T': /* trusted user (set class `t') */ if (bp[0] == 'C') { mid = macid(&bp[1], &ep); expand(ep, exbuf, sizeof exbuf, e); p = exbuf; } else { mid = 't'; p = &bp[1]; } while (*p != '\0') { register char *wd; char delim; while (*p != '\0' && isascii(*p) && isspace(*p)) p++; wd = p; while (*p != '\0' && !(isascii(*p) && isspace(*p))) p++; delim = *p; *p = '\0'; if (wd[0] != '\0') setclass(mid, wd); *p = delim; } break; case 'F': /* word class from file */ mid = macid(&bp[1], &ep); for (p = ep; isascii(*p) && isspace(*p); ) p++; if (p[0] == '-' && p[1] == 'o') { optional = TRUE; while (*p != '\0' && !(isascii(*p) && isspace(*p))) p++; while (isascii(*p) && isspace(*p)) p++; } else optional = FALSE; file = p; if (*file == '|') p = "%s"; else { while (*p != '\0' && !(isascii(*p) && isspace(*p))) p++; if (*p == '\0') p = "%s"; else { *p = '\0'; while (isascii(*++p) && isspace(*p)) continue; } } fileclass(mid, file, p, safe, optional); break; #ifdef XLA case 'L': /* extended load average description */ xla_init(&bp[1]); break; #endif #if defined(SUN_EXTENSIONS) && defined(SUN_LOOKUP_MACRO) case 'L': /* lookup macro */ case 'G': /* lookup class */ /* reserved for Sun -- NIS+ database lookup */ if (VendorCode != VENDOR_SUN) goto badline; sun_lg_config_line(bp, e); break; #endif case 'M': /* define mailer */ makemailer(&bp[1]); break; case 'O': /* set option */ setoption(bp[1], &bp[2], safe, FALSE, e); break; case 'P': /* set precedence */ if (NumPriorities >= MAXPRIORITIES) { toomany('P', MAXPRIORITIES); break; } for (p = &bp[1]; *p != '\0' && *p != '='; p++) continue; if (*p == '\0') goto badline; *p = '\0'; Priorities[NumPriorities].pri_name = newstr(&bp[1]); Priorities[NumPriorities].pri_val = atoi(++p); NumPriorities++; break; case 'V': /* configuration syntax version */ for (p = &bp[1]; isascii(*p) && isspace(*p); p++) continue; if (!isascii(*p) || !isdigit(*p)) { syserr("invalid argument to V line: \"%.20s\"", &bp[1]); break; } ConfigLevel = strtol(p, &ep, 10); /* ** Do heuristic tweaking for back compatibility. */ if (ConfigLevel >= 5) { /* level 5 configs have short name in $w */ p = macvalue('w', e); if (p != NULL && (p = strchr(p, '.')) != NULL) *p = '\0'; define('w', macvalue('w', e), e); } if (ConfigLevel >= 6) { ColonOkInAddr = FALSE; } /* ** Look for vendor code. */ if (*ep++ == '/') { extern bool setvendor __P((char *)); /* extract vendor code */ for (p = ep; isascii(*p) && isalpha(*p); ) p++; *p = '\0'; if (!setvendor(ep)) syserr("invalid V line vendor code: \"%s\"", ep); } break; case 'K': expand(&bp[1], exbuf, sizeof exbuf, e); (void) makemapentry(exbuf); break; case 'E': p = strchr(bp, '='); if (p != NULL) *p++ = '\0'; setuserenv(&bp[1], p); break; default: badline: syserr("unknown configuration line \"%s\"", bp); } if (bp != buf) free(bp); } if (ferror(cf)) { syserr("I/O read error"); finis(FALSE, EX_OSFILE); } fclose(cf); FileName = NULL; /* initialize host maps from local service tables */ inithostmaps(); /* determine if we need to do special name-server frotz */ { int nmaps; char *maptype[MAXMAPSTACK]; short mapreturn[MAXMAPACTIONS]; nmaps = switch_map_find("hosts", maptype, mapreturn); UseNameServer = FALSE; if (nmaps > 0 && nmaps <= MAXMAPSTACK) { register int mapno; for (mapno = 0; mapno < nmaps && !UseNameServer; mapno++) { if (strcmp(maptype[mapno], "dns") == 0) UseNameServer = TRUE; } } #ifdef HESIOD nmaps = switch_map_find("passwd", maptype, mapreturn); UseHesiod = FALSE; if (nmaps > 0 && nmaps <= MAXMAPSTACK) { register int mapno; for (mapno = 0; mapno < nmaps && !UseHesiod; mapno++) { if (strcmp(maptype[mapno], "hesiod") == 0) UseHesiod = TRUE; } } #endif } } /* ** TRANSLATE_DOLLARS -- convert $x into internal form ** ** Actually does all appropriate pre-processing of a config line ** to turn it into internal form. ** ** Parameters: ** bp -- the buffer to translate. ** ** Returns: ** None. The buffer is translated in place. Since the ** translations always make the buffer shorter, this is ** safe without a size parameter. */ void translate_dollars(bp) char *bp; { register char *p; auto char *ep; for (p = bp; *p != '\0'; p++) { if (*p == '#' && p > bp && ConfigLevel >= 3) { /* this is an on-line comment */ register char *e; switch (*--p & 0377) { case MACROEXPAND: /* it's from $# -- let it go through */ p++; break; case '\\': /* it's backslash escaped */ (void) strcpy(p, p + 1); break; default: /* delete preceeding white space */ while (isascii(*p) && isspace(*p) && *p != '\n' && p > bp) p--; if ((e = strchr(++p, '\n')) != NULL) (void) strcpy(p, e); else *p-- = '\0'; break; } continue; } if (*p != '$' || p[1] == '\0') continue; if (p[1] == '$') { /* actual dollar sign.... */ (void) strcpy(p, p + 1); continue; } /* convert to macro expansion character */ *p++ = MACROEXPAND; /* special handling for $=, $~, $&, and $? */ if (*p == '=' || *p == '~' || *p == '&' || *p == '?') p++; /* convert macro name to code */ *p = macid(p, &ep); if (ep != p) strcpy(p + 1, ep); } /* strip trailing white space from the line */ while (--p > bp && isascii(*p) && isspace(*p)) *p = '\0'; } /* ** TOOMANY -- signal too many of some option ** ** Parameters: ** id -- the id of the error line ** maxcnt -- the maximum possible values ** ** Returns: ** none. ** ** Side Effects: ** gives a syserr. */ void toomany(id, maxcnt) int id; int maxcnt; { syserr("too many %c lines, %d max", id, maxcnt); } /* ** FILECLASS -- read members of a class from a file ** ** Parameters: ** class -- class to define. ** filename -- name of file to read. ** fmt -- scanf string to use for match. ** safe -- if set, this is a safe read. ** optional -- if set, it is not an error for the file to ** not exist. ** ** Returns: ** none ** ** Side Effects: ** ** puts all lines in filename that match a scanf into ** the named class. */ void fileclass(class, filename, fmt, safe, optional) int class; char *filename; char *fmt; bool safe; bool optional; { FILE *f; int sff; pid_t pid; register char *p; char buf[MAXLINE]; if (tTd(37, 2)) printf("fileclass(%s, fmt=%s)\n", filename, fmt); if (filename[0] == '|') { auto int fd; int i; char *argv[MAXPV + 1]; i = 0; for (p = strtok(&filename[1], " \t"); p != NULL; p = strtok(NULL, " \t")) { if (i >= MAXPV) break; argv[i++] = p; } argv[i] = NULL; pid = prog_open(argv, &fd, CurEnv); if (pid < 0) f = NULL; else f = fdopen(fd, "r"); } else { pid = -1; sff = SFF_REGONLY; if (!bitset(DBS_CLASSFILEINUNSAFEDIRPATH, DontBlameSendmail)) sff |= SFF_SAFEDIRPATH; if (!bitset(DBS_LINKEDCLASSFILEINWRITABLEDIR, DontBlameSendmail)) sff |= SFF_NOWLINK; if (safe) sff |= SFF_OPENASROOT; if (DontLockReadFiles) sff |= SFF_NOLOCK; f = safefopen(filename, O_RDONLY, 0, sff); } if (f == NULL) { if (!optional) syserr("fileclass: cannot open %s", filename); return; } while (fgets(buf, sizeof buf, f) != NULL) { register char *p; # if SCANF char wordbuf[MAXLINE + 1]; # endif if (buf[0] == '#') continue; # if SCANF if (sscanf(buf, fmt, wordbuf) != 1) continue; p = wordbuf; # else /* SCANF */ p = buf; # endif /* SCANF */ /* ** Break up the match into words. */ while (*p != '\0') { register char *q; /* strip leading spaces */ while (isascii(*p) && isspace(*p)) p++; if (*p == '\0') break; /* find the end of the word */ q = p; while (*p != '\0' && !(isascii(*p) && isspace(*p))) p++; if (*p != '\0') *p++ = '\0'; /* enter the word in the symbol table */ setclass(class, q); } } (void) fclose(f); if (pid > 0) (void) waitfor(pid); } /* ** MAKEMAILER -- define a new mailer. ** ** Parameters: ** line -- description of mailer. This is in labeled ** fields. The fields are: ** A -- the argv for this mailer ** C -- the character set for MIME conversions ** D -- the directory to run in ** E -- the eol string ** F -- the flags associated with the mailer ** L -- the maximum line length ** M -- the maximum message size ** N -- the niceness at which to run ** P -- the path to the mailer ** R -- the recipient rewriting set ** S -- the sender rewriting set ** T -- the mailer type (for DSNs) ** U -- the uid to run as ** The first word is the canonical name of the mailer. ** ** Returns: ** none. ** ** Side Effects: ** enters the mailer into the mailer table. */ void makemailer(line) char *line; { register char *p; register struct mailer *m; register STAB *s; int i; char fcode; auto char *endp; extern int NextMailer; extern char **makeargv __P((char *)); extern char *munchstring __P((char *, char **, int)); /* allocate a mailer and set up defaults */ m = (struct mailer *) xalloc(sizeof *m); bzero((char *) m, sizeof *m); /* collect the mailer name */ for (p = line; *p != '\0' && *p != ',' && !(isascii(*p) && isspace(*p)); p++) continue; if (*p != '\0') *p++ = '\0'; if (line[0] == '\0') syserr("name required for mailer"); m->m_name = newstr(line); /* now scan through and assign info from the fields */ while (*p != '\0') { auto char *delimptr; while (*p != '\0' && (*p == ',' || (isascii(*p) && isspace(*p)))) p++; /* p now points to field code */ fcode = *p; while (*p != '\0' && *p != '=' && *p != ',') p++; if (*p++ != '=') { syserr("mailer %s: `=' expected", m->m_name); return; } while (isascii(*p) && isspace(*p)) p++; /* p now points to the field body */ p = munchstring(p, &delimptr, ','); /* install the field into the mailer struct */ switch (fcode) { case 'P': /* pathname */ if (*p == '\0') syserr("mailer %s: empty path name", m->m_name); m->m_mailer = newstr(p); break; case 'F': /* flags */ for (; *p != '\0'; p++) if (!(isascii(*p) && isspace(*p))) setbitn(*p, m->m_flags); break; case 'S': /* sender rewriting ruleset */ case 'R': /* recipient rewriting ruleset */ i = strtorwset(p, &endp, ST_ENTER); if (i < 0) return; if (fcode == 'S') m->m_sh_rwset = m->m_se_rwset = i; else m->m_rh_rwset = m->m_re_rwset = i; p = endp; if (*p++ == '/') { i = strtorwset(p, NULL, ST_ENTER); if (i < 0) return; if (fcode == 'S') m->m_sh_rwset = i; else m->m_rh_rwset = i; } break; case 'E': /* end of line string */ if (*p == '\0') syserr("mailer %s: null end-of-line string", m->m_name); m->m_eol = newstr(p); break; case 'A': /* argument vector */ if (*p == '\0') syserr("mailer %s: null argument vector", m->m_name); m->m_argv = makeargv(p); break; case 'M': /* maximum message size */ m->m_maxsize = atol(p); break; case 'L': /* maximum line length */ m->m_linelimit = atoi(p); if (m->m_linelimit < 0) m->m_linelimit = 0; break; case 'N': /* run niceness */ m->m_nice = atoi(p); break; case 'D': /* working directory */ if (*p == '\0') syserr("mailer %s: null working directory", m->m_name); m->m_execdir = newstr(p); break; case 'C': /* default charset */ if (*p == '\0') syserr("mailer %s: null charset", m->m_name); m->m_defcharset = newstr(p); break; case 'T': /* MTA-Name/Address/Diagnostic types */ /* extract MTA name type; default to "dns" */ m->m_mtatype = newstr(p); p = strchr(m->m_mtatype, '/'); if (p != NULL) { *p++ = '\0'; if (*p == '\0') p = NULL; } if (*m->m_mtatype == '\0') m->m_mtatype = "dns"; /* extract address type; default to "rfc822" */ m->m_addrtype = p; if (p != NULL) p = strchr(p, '/'); if (p != NULL) { *p++ = '\0'; if (*p == '\0') p = NULL; } if (m->m_addrtype == NULL || *m->m_addrtype == '\0') m->m_addrtype = "rfc822"; /* extract diagnostic type; default to "smtp" */ m->m_diagtype = p; if (m->m_diagtype == NULL || *m->m_diagtype == '\0') m->m_diagtype = "smtp"; break; case 'U': /* user id */ if (isascii(*p) && !isdigit(*p)) { char *q = p; struct passwd *pw; while (*p != '\0' && isascii(*p) && (isalnum(*p) || strchr("-_", *p) != NULL)) p++; while (isascii(*p) && isspace(*p)) *p++ = '\0'; if (*p != '\0') *p++ = '\0'; if (*q == '\0') syserr("mailer %s: null user name", m->m_name); pw = sm_getpwnam(q); if (pw == NULL) syserr("readcf: mailer U= flag: unknown user %s", q); else { m->m_uid = pw->pw_uid; m->m_gid = pw->pw_gid; } } else { auto char *q; m->m_uid = strtol(p, &q, 0); p = q; while (isascii(*p) && isspace(*p)) p++; if (*p != '\0') p++; } while (isascii(*p) && isspace(*p)) p++; if (*p == '\0') break; if (isascii(*p) && !isdigit(*p)) { char *q = p; struct group *gr; while (isascii(*p) && isalnum(*p)) p++; *p++ = '\0'; if (*q == '\0') syserr("mailer %s: null group name", m->m_name); gr = getgrnam(q); if (gr == NULL) syserr("readcf: mailer U= flag: unknown group %s", q); else m->m_gid = gr->gr_gid; } else { m->m_gid = strtol(p, NULL, 0); } break; } p = delimptr; } /* do some rationality checking */ if (m->m_argv == NULL) { syserr("M%s: A= argument required", m->m_name); return; } if (m->m_mailer == NULL) { syserr("M%s: P= argument required", m->m_name); return; } if (NextMailer >= MAXMAILERS) { syserr("too many mailers defined (%d max)", MAXMAILERS); return; } /* do some heuristic cleanup for back compatibility */ if (bitnset(M_LIMITS, m->m_flags)) { if (m->m_linelimit == 0) m->m_linelimit = SMTPLINELIM; if (ConfigLevel < 2) setbitn(M_7BITS, m->m_flags); } if (strcmp(m->m_mailer, "[IPC]") == 0 || strcmp(m->m_mailer, "[TCP]") == 0) { if (m->m_mtatype == NULL) m->m_mtatype = "dns"; if (m->m_addrtype == NULL) m->m_addrtype = "rfc822"; if (m->m_diagtype == NULL) m->m_diagtype = "smtp"; } if (strcmp(m->m_mailer, "[FILE]") == 0) { /* Use the second argument for filename */ if (m->m_argv[0] == NULL || m->m_argv[1] == NULL || m->m_argv[2] != NULL) { syserr("M%s: too %s parameters for [FILE] mailer", m->m_name, (m->m_argv[0] == NULL || m->m_argv[1] == NULL) ? "few" : "many"); } else if (strcmp(m->m_argv[0], "FILE") != 0) { syserr("M%s: first argument in [FILE] mailer must be FILE", m->m_name); } } if (m->m_eol == NULL) { char **pp; /* default for SMTP is \r\n; use \n for local delivery */ for (pp = m->m_argv; *pp != NULL; pp++) { char *p; for (p = *pp; *p != '\0'; ) { if ((*p++ & 0377) == MACROEXPAND && *p == 'u') break; } if (*p != '\0') break; } if (*pp == NULL) m->m_eol = "\r\n"; else m->m_eol = "\n"; } /* enter the mailer into the symbol table */ s = stab(m->m_name, ST_MAILER, ST_ENTER); if (s->s_mailer != NULL) { i = s->s_mailer->m_mno; free(s->s_mailer); } else { i = NextMailer++; } Mailer[i] = s->s_mailer = m; m->m_mno = i; } /* ** MUNCHSTRING -- translate a string into internal form. ** ** Parameters: ** p -- the string to munch. ** delimptr -- if non-NULL, set to the pointer of the ** field delimiter character. ** delim -- the delimiter for the field. ** ** Returns: ** the munched string. */ char * munchstring(p, delimptr, delim) register char *p; char **delimptr; int delim; { register char *q; bool backslash = FALSE; bool quotemode = FALSE; static char buf[MAXLINE]; for (q = buf; *p != '\0' && q < &buf[sizeof buf - 1]; p++) { if (backslash) { /* everything is roughly literal */ backslash = FALSE; switch (*p) { case 'r': /* carriage return */ *q++ = '\r'; continue; case 'n': /* newline */ *q++ = '\n'; continue; case 'f': /* form feed */ *q++ = '\f'; continue; case 'b': /* backspace */ *q++ = '\b'; continue; } *q++ = *p; } else { if (*p == '\\') backslash = TRUE; else if (*p == '"') quotemode = !quotemode; else if (quotemode || *p != delim) *q++ = *p; else break; } } if (delimptr != NULL) *delimptr = p; *q++ = '\0'; return (buf); } /* ** MAKEARGV -- break up a string into words ** ** Parameters: ** p -- the string to break up. ** ** Returns: ** a char **argv (dynamically allocated) ** ** Side Effects: ** munges p. */ char ** makeargv(p) register char *p; { char *q; int i; char **avp; char *argv[MAXPV + 1]; /* take apart the words */ i = 0; while (*p != '\0' && i < MAXPV) { q = p; while (*p != '\0' && !(isascii(*p) && isspace(*p))) p++; while (isascii(*p) && isspace(*p)) *p++ = '\0'; argv[i++] = newstr(q); } argv[i++] = NULL; /* now make a copy of the argv */ avp = (char **) xalloc(sizeof *avp * i); bcopy((char *) argv, (char *) avp, sizeof *avp * i); return (avp); } /* ** PRINTRULES -- print rewrite rules (for debugging) ** ** Parameters: ** none. ** ** Returns: ** none. ** ** Side Effects: ** prints rewrite rules. */ void printrules() { register struct rewrite *rwp; register int ruleset; for (ruleset = 0; ruleset < 10; ruleset++) { if (RewriteRules[ruleset] == NULL) continue; printf("\n----Rule Set %d:", ruleset); for (rwp = RewriteRules[ruleset]; rwp != NULL; rwp = rwp->r_next) { printf("\nLHS:"); printav(rwp->r_lhs); printf("RHS:"); printav(rwp->r_rhs); } } } /* ** PRINTMAILER -- print mailer structure (for debugging) ** ** Parameters: ** m -- the mailer to print ** ** Returns: ** none. */ void printmailer(m) register MAILER *m; { int j; printf("mailer %d (%s): P=%s S=%d/%d R=%d/%d M=%ld U=%d:%d F=", m->m_mno, m->m_name, m->m_mailer, m->m_se_rwset, m->m_sh_rwset, m->m_re_rwset, m->m_rh_rwset, m->m_maxsize, (int) m->m_uid, (int) m->m_gid); for (j = '\0'; j <= '\177'; j++) if (bitnset(j, m->m_flags)) (void) putchar(j); printf(" L=%d E=", m->m_linelimit); xputs(m->m_eol); if (m->m_defcharset != NULL) printf(" C=%s", m->m_defcharset); printf(" T=%s/%s/%s", m->m_mtatype == NULL ? "" : m->m_mtatype, m->m_addrtype == NULL ? "" : m->m_addrtype, m->m_diagtype == NULL ? "" : m->m_diagtype); if (m->m_argv != NULL) { char **a = m->m_argv; printf(" A="); while (*a != NULL) { if (a != m->m_argv) printf(" "); xputs(*a++); } } printf("\n"); } /* ** SETOPTION -- set global processing option ** ** Parameters: ** opt -- option name. ** val -- option value (as a text string). ** safe -- set if this came from a configuration file. ** Some options (if set from the command line) will ** reset the user id to avoid security problems. ** sticky -- if set, don't let other setoptions override ** this value. ** e -- the main envelope. ** ** Returns: ** none. ** ** Side Effects: ** Sets options as implied by the arguments. */ static BITMAP StickyOpt; /* set if option is stuck */ extern void settimeout __P((char *, char *)); #if NAMED_BIND struct resolverflags { char *rf_name; /* name of the flag */ long rf_bits; /* bits to set/clear */ } ResolverFlags[] = { { "debug", RES_DEBUG }, { "aaonly", RES_AAONLY }, { "usevc", RES_USEVC }, { "primary", RES_PRIMARY }, { "igntc", RES_IGNTC }, { "recurse", RES_RECURSE }, { "defnames", RES_DEFNAMES }, { "stayopen", RES_STAYOPEN }, { "dnsrch", RES_DNSRCH }, { "true", 0 }, /* avoid error on old syntax */ { NULL, 0 } }; #endif struct optioninfo { char *o_name; /* long name of option */ u_char o_code; /* short name of option */ bool o_safe; /* safe for random people to use */ } OptionTab[] = { { "SevenBitInput", '7', TRUE }, #if MIME8TO7 { "EightBitMode", '8', TRUE }, #endif { "AliasFile", 'A', FALSE }, { "AliasWait", 'a', FALSE }, { "BlankSub", 'B', FALSE }, { "MinFreeBlocks", 'b', TRUE }, { "CheckpointInterval", 'C', TRUE }, { "HoldExpensive", 'c', FALSE }, { "AutoRebuildAliases", 'D', FALSE }, { "DeliveryMode", 'd', TRUE }, { "ErrorHeader", 'E', FALSE }, { "ErrorMode", 'e', TRUE }, { "TempFileMode", 'F', FALSE }, { "SaveFromLine", 'f', FALSE }, { "MatchGECOS", 'G', FALSE }, { "HelpFile", 'H', FALSE }, { "MaxHopCount", 'h', FALSE }, { "ResolverOptions", 'I', FALSE }, { "IgnoreDots", 'i', TRUE }, { "ForwardPath", 'J', FALSE }, { "SendMimeErrors", 'j', TRUE }, { "ConnectionCacheSize", 'k', FALSE }, { "ConnectionCacheTimeout", 'K', FALSE }, { "UseErrorsTo", 'l', FALSE }, { "LogLevel", 'L', TRUE }, { "MeToo", 'm', TRUE }, { "CheckAliases", 'n', FALSE }, { "OldStyleHeaders", 'o', TRUE }, { "DaemonPortOptions", 'O', FALSE }, { "PrivacyOptions", 'p', TRUE }, { "PostmasterCopy", 'P', FALSE }, { "QueueFactor", 'q', FALSE }, { "QueueDirectory", 'Q', FALSE }, { "DontPruneRoutes", 'R', FALSE }, { "Timeout", 'r', FALSE }, { "StatusFile", 'S', FALSE }, { "SuperSafe", 's', TRUE }, { "QueueTimeout", 'T', FALSE }, { "TimeZoneSpec", 't', FALSE }, { "UserDatabaseSpec", 'U', FALSE }, { "DefaultUser", 'u', FALSE }, { "FallbackMXhost", 'V', FALSE }, { "Verbose", 'v', TRUE }, { "TryNullMXList", 'w', FALSE }, { "QueueLA", 'x', FALSE }, { "RefuseLA", 'X', FALSE }, { "RecipientFactor", 'y', FALSE }, { "ForkEachJob", 'Y', FALSE }, { "ClassFactor", 'z', FALSE }, { "RetryFactor", 'Z', FALSE }, #define O_QUEUESORTORD 0x81 { "QueueSortOrder", O_QUEUESORTORD, TRUE }, #define O_HOSTSFILE 0x82 { "HostsFile", O_HOSTSFILE, FALSE }, #define O_MQA 0x83 { "MinQueueAge", O_MQA, TRUE }, #define O_DEFCHARSET 0x85 { "DefaultCharSet", O_DEFCHARSET, TRUE }, #define O_SSFILE 0x86 { "ServiceSwitchFile", O_SSFILE, FALSE }, #define O_DIALDELAY 0x87 { "DialDelay", O_DIALDELAY, TRUE }, #define O_NORCPTACTION 0x88 { "NoRecipientAction", O_NORCPTACTION, TRUE }, #define O_SAFEFILEENV 0x89 { "SafeFileEnvironment", O_SAFEFILEENV, FALSE }, #define O_MAXMSGSIZE 0x8a { "MaxMessageSize", O_MAXMSGSIZE, FALSE }, #define O_COLONOKINADDR 0x8b { "ColonOkInAddr", O_COLONOKINADDR, TRUE }, #define O_MAXQUEUERUN 0x8c { "MaxQueueRunSize", O_MAXQUEUERUN, TRUE }, #define O_MAXCHILDREN 0x8d { "MaxDaemonChildren", O_MAXCHILDREN, FALSE }, #define O_KEEPCNAMES 0x8e { "DontExpandCnames", O_KEEPCNAMES, FALSE }, #define O_MUSTQUOTE 0x8f { "MustQuoteChars", O_MUSTQUOTE, FALSE }, #define O_SMTPGREETING 0x90 { "SmtpGreetingMessage", O_SMTPGREETING, FALSE }, #define O_UNIXFROM 0x91 { "UnixFromLine", O_UNIXFROM, FALSE }, #define O_OPCHARS 0x92 { "OperatorChars", O_OPCHARS, FALSE }, #define O_DONTINITGRPS 0x93 { "DontInitGroups", O_DONTINITGRPS, FALSE }, #define O_SLFH 0x94 { "SingleLineFromHeader", O_SLFH, TRUE }, #define O_ABH 0x95 { "AllowBogusHELO", O_ABH, TRUE }, #define O_CONNTHROT 0x97 { "ConnectionRateThrottle", O_CONNTHROT, FALSE }, #define O_UGW 0x99 { "UnsafeGroupWrites", O_UGW, FALSE }, #define O_DBLBOUNCE 0x9a { "DoubleBounceAddress", O_DBLBOUNCE, FALSE }, #define O_HSDIR 0x9b { "HostStatusDirectory", O_HSDIR, FALSE }, #define O_SINGTHREAD 0x9c { "SingleThreadDelivery", O_SINGTHREAD, FALSE }, #define O_RUNASUSER 0x9d { "RunAsUser", O_RUNASUSER, FALSE }, #if _FFR_DSN_RRT_OPTION #define O_DSN_RRT 0x9e { "RrtImpliesDsn", O_DSN_RRT, FALSE }, #endif #if _FFR_PIDFILE_OPTION #define O_PIDFILE 0x9f { "PidFile", O_PIDFILE, FALSE }, #endif #define O_DONTBLAMESENDMAIL 0xa0 { "DontBlameSendmail", O_DONTBLAMESENDMAIL, FALSE }, #define O_DPI 0xa1 { "DontProbeInterfaces", O_DPI, FALSE }, #define O_MAXRCPT 0xa2 { "MaxRecipientsPerMessage", O_MAXRCPT, FALSE }, #if _FFR_DEADLETTERDROP_OPTION #define O_DEADLETTER 0xa3 { "DeadLetterDrop", O_DEADLETTER, FALSE }, #endif #if _FFR_DONTLOCKFILESFORREAD_OPTION #define O_DONTLOCK 0xa4 { "DontLockFilesForRead", O_DONTLOCK, FALSE }, #endif #if _FFR_MAXALIASRECURSION_OPTION #define O_MAXALIASRCSN 0xa5 { "MaxAliasRecursion", O_MAXALIASRCSN, FALSE }, #endif #if _FFR_CONNECTONLYTO_OPTION #define O_CNCTONLYTO 0xa6 { "ConnectOnlyTo", O_CNCTONLYTO, FALSE }, #endif #if _FFR_TRUSTED_USER #define O_TRUSTUSER 0xa7 { "TrustedUser", O_TRUSTUSER, FALSE }, #endif #if _FFR_MAX_MIME_HEADER_LENGTH #define O_MAXMIMEHDRLEN 0xa8 { "MaxMimeHeaderLength", O_MAXMIMEHDRLEN, FALSE }, #endif #if _FFR_CONTROL_SOCKET #define O_CONTROLSOCKET 0xa9 { "ControlSocketName", O_CONTROLSOCKET, FALSE }, #endif #if _FFR_MAX_HEADERS_LENGTH #define O_MAXHDRSLEN 0xaa { "MaxHeadersLength", O_MAXHDRSLEN, FALSE }, #endif { NULL, '\0', FALSE } }; void setoption(opt, val, safe, sticky, e) int opt; char *val; bool safe; bool sticky; register ENVELOPE *e; { register char *p; register struct optioninfo *o; char *subopt; int mid; bool can_setuid = RunAsUid == 0; auto char *ep; char buf[50]; extern bool atobool __P((char *)); extern time_t convtime __P((char *, char)); extern int QueueLA; extern int RefuseLA; extern bool Warn_Q_option; extern void setalias __P((char *)); extern int atooct __P((char *)); extern void setdefuser __P((void)); extern void setdaemonoptions __P((char *)); errno = 0; if (opt == ' ') { /* full word options */ struct optioninfo *sel; p = strchr(val, '='); if (p == NULL) p = &val[strlen(val)]; while (*--p == ' ') continue; while (*++p == ' ') *p = '\0'; if (p == val) { syserr("readcf: null option name"); return; } if (*p == '=') *p++ = '\0'; while (*p == ' ') p++; subopt = strchr(val, '.'); if (subopt != NULL) *subopt++ = '\0'; sel = NULL; for (o = OptionTab; o->o_name != NULL; o++) { if (strncasecmp(o->o_name, val, strlen(val)) != 0) continue; if (strlen(o->o_name) == strlen(val)) { /* completely specified -- this must be it */ sel = NULL; break; } if (sel != NULL) break; sel = o; } if (sel != NULL && o->o_name == NULL) o = sel; else if (o->o_name == NULL) { syserr("readcf: unknown option name %s", val); return; } else if (sel != NULL) { syserr("readcf: ambiguous option name %s (matches %s and %s)", val, sel->o_name, o->o_name); return; } if (strlen(val) != strlen(o->o_name)) { int oldVerbose = Verbose; Verbose = 1; message("Option %s used as abbreviation for %s", val, o->o_name); Verbose = oldVerbose; } opt = o->o_code; val = p; } else { for (o = OptionTab; o->o_name != NULL; o++) { if (o->o_code == opt) break; } subopt = NULL; } if (tTd(37, 1)) { printf(isascii(opt) && isprint(opt) ? "setoption %s (%c).%s=" : "setoption %s (0x%x).%s=", o->o_name == NULL ? "" : o->o_name, opt, subopt == NULL ? "" : subopt); xputs(val); } /* ** See if this option is preset for us. */ if (!sticky && bitnset(opt, StickyOpt)) { if (tTd(37, 1)) printf(" (ignored)\n"); return; } /* ** Check to see if this option can be specified by this user. */ if (!safe && RealUid == 0) safe = TRUE; if (!safe && !o->o_safe) { if (opt != 'M' || (val[0] != 'r' && val[0] != 's')) { if (tTd(37, 1)) printf(" (unsafe)"); (void) drop_privileges(TRUE); } } if (tTd(37, 1)) printf("\n"); switch (opt & 0xff) { case '7': /* force seven-bit input */ SevenBitInput = atobool(val); break; #if MIME8TO7 case '8': /* handling of 8-bit input */ switch (*val) { case 'm': /* convert 8-bit, convert MIME */ MimeMode = MM_CVTMIME|MM_MIME8BIT; break; case 'p': /* pass 8 bit, convert MIME */ MimeMode = MM_CVTMIME|MM_PASS8BIT; break; case 's': /* strict adherence */ MimeMode = MM_CVTMIME; break; #if 0 case 'r': /* reject 8-bit, don't convert MIME */ MimeMode = 0; break; case 'j': /* "just send 8" */ MimeMode = MM_PASS8BIT; break; case 'a': /* encode 8 bit if available */ MimeMode = MM_MIME8BIT|MM_PASS8BIT|MM_CVTMIME; break; case 'c': /* convert 8 bit to MIME, never 7 bit */ MimeMode = MM_MIME8BIT; break; #endif default: syserr("Unknown 8-bit mode %c", *val); finis(FALSE, EX_USAGE); } break; #endif case 'A': /* set default alias file */ if (val[0] == '\0') setalias("aliases"); else setalias(val); break; case 'a': /* look N minutes for "@:@" in alias file */ if (val[0] == '\0') SafeAlias = 5 * 60; /* five minutes */ else SafeAlias = convtime(val, 'm'); break; case 'B': /* substitution for blank character */ SpaceSub = val[0]; if (SpaceSub == '\0') SpaceSub = ' '; break; case 'b': /* min blocks free on queue fs/max msg size */ p = strchr(val, '/'); if (p != NULL) { *p++ = '\0'; MaxMessageSize = atol(p); } MinBlocksFree = atol(val); break; case 'c': /* don't connect to "expensive" mailers */ NoConnect = atobool(val); break; case 'C': /* checkpoint every N addresses */ CheckpointInterval = atoi(val); break; case 'd': /* delivery mode */ switch (*val) { case '\0': e->e_sendmode = SM_DELIVER; break; case SM_QUEUE: /* queue only */ case SM_DEFER: /* queue only and defer map lookups */ #if !QUEUE syserr("need QUEUE to set -odqueue or -oddefer"); #endif /* QUEUE */ /* fall through..... */ case SM_DELIVER: /* do everything */ case SM_FORK: /* fork after verification */ e->e_sendmode = *val; break; default: syserr("Unknown delivery mode %c", *val); finis(FALSE, EX_USAGE); } buf[0] = (char)e->e_sendmode; buf[1] = '\0'; define(macid("{deliveryMode}", NULL), newstr(buf), e); break; case 'D': /* rebuild alias database as needed */ AutoRebuild = atobool(val); break; case 'E': /* error message header/header file */ if (*val != '\0') ErrMsgFile = newstr(val); break; case 'e': /* set error processing mode */ switch (*val) { case EM_QUIET: /* be silent about it */ case EM_MAIL: /* mail back */ case EM_BERKNET: /* do berknet error processing */ case EM_WRITE: /* write back (or mail) */ case EM_PRINT: /* print errors normally (default) */ e->e_errormode = *val; break; } break; case 'F': /* file mode */ FileMode = atooct(val) & 0777; break; case 'f': /* save Unix-style From lines on front */ SaveFrom = atobool(val); break; case 'G': /* match recipients against GECOS field */ MatchGecos = atobool(val); break; case 'g': /* default gid */ g_opt: if (isascii(*val) && isdigit(*val)) DefGid = atoi(val); else { register struct group *gr; DefGid = -1; gr = getgrnam(val); if (gr == NULL) syserr("readcf: option %c: unknown group %s", opt, val); else DefGid = gr->gr_gid; } break; case 'H': /* help file */ if (val[0] == '\0') HelpFile = "sendmail.hf"; else HelpFile = newstr(val); break; case 'h': /* maximum hop count */ MaxHopCount = atoi(val); break; case 'I': /* use internet domain name server */ #if NAMED_BIND for (p = val; *p != 0; ) { bool clearmode; char *q; struct resolverflags *rfp; while (*p == ' ') p++; if (*p == '\0') break; clearmode = FALSE; if (*p == '-') clearmode = TRUE; else if (*p != '+') p--; p++; q = p; while (*p != '\0' && !(isascii(*p) && isspace(*p))) p++; if (*p != '\0') *p++ = '\0'; if (strcasecmp(q, "HasWildcardMX") == 0) { HasWildcardMX = !clearmode; continue; } for (rfp = ResolverFlags; rfp->rf_name != NULL; rfp++) { if (strcasecmp(q, rfp->rf_name) == 0) break; } if (rfp->rf_name == NULL) syserr("readcf: I option value %s unrecognized", q); else if (clearmode) _res.options &= ~rfp->rf_bits; else _res.options |= rfp->rf_bits; } if (tTd(8, 2)) printf("_res.options = %x, HasWildcardMX = %d\n", (u_int) _res.options, HasWildcardMX); #else usrerr("name server (I option) specified but BIND not compiled in"); #endif break; case 'i': /* ignore dot lines in message */ IgnrDot = atobool(val); break; case 'j': /* send errors in MIME (RFC 1341) format */ SendMIMEErrors = atobool(val); break; case 'J': /* .forward search path */ ForwardPath = newstr(val); break; case 'k': /* connection cache size */ MaxMciCache = atoi(val); if (MaxMciCache < 0) MaxMciCache = 0; break; case 'K': /* connection cache timeout */ MciCacheTimeout = convtime(val, 'm'); break; case 'l': /* use Errors-To: header */ UseErrorsTo = atobool(val); break; case 'L': /* log level */ if (safe || LogLevel < atoi(val)) LogLevel = atoi(val); break; case 'M': /* define macro */ mid = macid(val, &ep); p = newstr(ep); if (!safe) cleanstrcpy(p, p, MAXNAME); define(mid, p, CurEnv); sticky = FALSE; break; case 'm': /* send to me too */ MeToo = atobool(val); break; case 'n': /* validate RHS in newaliases */ CheckAliases = atobool(val); break; /* 'N' available -- was "net name" */ case 'O': /* daemon options */ #if DAEMON setdaemonoptions(val); #else syserr("DaemonPortOptions (O option) set but DAEMON not compiled in"); #endif break; case 'o': /* assume old style headers */ if (atobool(val)) CurEnv->e_flags |= EF_OLDSTYLE; else CurEnv->e_flags &= ~EF_OLDSTYLE; break; case 'p': /* select privacy level */ p = val; for (;;) { register struct prival *pv; extern struct prival PrivacyValues[]; while (isascii(*p) && (isspace(*p) || ispunct(*p))) p++; if (*p == '\0') break; val = p; while (isascii(*p) && isalnum(*p)) p++; if (*p != '\0') *p++ = '\0'; for (pv = PrivacyValues; pv->pv_name != NULL; pv++) { if (strcasecmp(val, pv->pv_name) == 0) break; } if (pv->pv_name == NULL) syserr("readcf: Op line: %s unrecognized", val); PrivacyFlags |= pv->pv_flag; } sticky = FALSE; break; case 'P': /* postmaster copy address for returned mail */ PostMasterCopy = newstr(val); break; case 'q': /* slope of queue only function */ QueueFactor = atoi(val); break; case 'Q': /* queue directory */ if (val[0] == '\0') QueueDir = "mqueue"; else QueueDir = newstr(val); if (RealUid != 0 && !safe) Warn_Q_option = TRUE; break; case 'R': /* don't prune routes */ DontPruneRoutes = atobool(val); break; case 'r': /* read timeout */ if (subopt == NULL) inittimeouts(val); else settimeout(subopt, val); break; case 'S': /* status file */ if (val[0] == '\0') StatFile = "sendmail.st"; else StatFile = newstr(val); break; case 's': /* be super safe, even if expensive */ SuperSafe = atobool(val); break; case 'T': /* queue timeout */ p = strchr(val, '/'); if (p != NULL) { *p++ = '\0'; settimeout("queuewarn", p); } settimeout("queuereturn", val); break; case 't': /* time zone name */ TimeZoneSpec = newstr(val); break; case 'U': /* location of user database */ UdbSpec = newstr(val); break; case 'u': /* set default uid */ for (p = val; *p != '\0'; p++) { if (*p == '.' || *p == '/' || *p == ':') { *p++ = '\0'; break; } } if (isascii(*val) && isdigit(*val)) { DefUid = atoi(val); setdefuser(); } else { register struct passwd *pw; DefUid = -1; pw = sm_getpwnam(val); if (pw == NULL) syserr("readcf: option u: unknown user %s", val); else { DefUid = pw->pw_uid; DefGid = pw->pw_gid; DefUser = newstr(pw->pw_name); } } #ifdef UID_MAX if (DefUid > UID_MAX) { syserr("readcf: option u: uid value (%ld) > UID_MAX (%ld); ignored", DefUid, UID_MAX); } #endif /* handle the group if it is there */ if (*p == '\0') break; val = p; goto g_opt; case 'V': /* fallback MX host */ if (val[0] != '\0') FallBackMX = newstr(val); break; case 'v': /* run in verbose mode */ Verbose = atobool(val) ? 1 : 0; break; case 'w': /* if we are best MX, try host directly */ TryNullMXList = atobool(val); break; /* 'W' available -- was wizard password */ case 'x': /* load avg at which to auto-queue msgs */ QueueLA = atoi(val); break; case 'X': /* load avg at which to auto-reject connections */ RefuseLA = atoi(val); break; case 'y': /* work recipient factor */ WkRecipFact = atoi(val); break; case 'Y': /* fork jobs during queue runs */ ForkQueueRuns = atobool(val); break; case 'z': /* work message class factor */ WkClassFact = atoi(val); break; case 'Z': /* work time factor */ WkTimeFact = atoi(val); break; case O_QUEUESORTORD: /* queue sorting order */ switch (*val) { case 'h': /* Host first */ case 'H': QueueSortOrder = QS_BYHOST; break; case 'p': /* Priority order */ case 'P': QueueSortOrder = QS_BYPRIORITY; break; case 't': /* Submission time */ case 'T': QueueSortOrder = QS_BYTIME; break; default: syserr("Invalid queue sort order \"%s\"", val); } break; case O_HOSTSFILE: /* pathname of /etc/hosts file */ HostsFile = newstr(val); break; case O_MQA: /* minimum queue age between deliveries */ MinQueueAge = convtime(val, 'm'); break; case O_DEFCHARSET: /* default character set for mimefying */ DefaultCharSet = newstr(denlstring(val, TRUE, TRUE)); break; case O_SSFILE: /* service switch file */ ServiceSwitchFile = newstr(val); break; case O_DIALDELAY: /* delay for dial-on-demand operation */ DialDelay = convtime(val, 's'); break; case O_NORCPTACTION: /* what to do if no recipient */ if (strcasecmp(val, "none") == 0) NoRecipientAction = NRA_NO_ACTION; else if (strcasecmp(val, "add-to") == 0) NoRecipientAction = NRA_ADD_TO; else if (strcasecmp(val, "add-apparently-to") == 0) NoRecipientAction = NRA_ADD_APPARENTLY_TO; else if (strcasecmp(val, "add-bcc") == 0) NoRecipientAction = NRA_ADD_BCC; else if (strcasecmp(val, "add-to-undisclosed") == 0) NoRecipientAction = NRA_ADD_TO_UNDISCLOSED; else syserr("Invalid NoRecipientAction: %s", val); break; case O_SAFEFILEENV: /* chroot() environ for writing to files */ SafeFileEnv = newstr(val); break; case O_MAXMSGSIZE: /* maximum message size */ MaxMessageSize = atol(val); break; case O_COLONOKINADDR: /* old style handling of colon addresses */ ColonOkInAddr = atobool(val); break; case O_MAXQUEUERUN: /* max # of jobs in a single queue run */ MaxQueueRun = atol(val); break; case O_MAXCHILDREN: /* max # of children of daemon */ MaxChildren = atoi(val); break; case O_KEEPCNAMES: /* don't expand CNAME records */ DontExpandCnames = atobool(val); break; case O_MUSTQUOTE: /* must quote these characters in phrases */ strcpy(buf, "@,;:\\()[]"); if (strlen(val) < (SIZE_T) sizeof buf - 10) strcat(buf, val); MustQuoteChars = newstr(buf); break; case O_SMTPGREETING: /* SMTP greeting message (old $e macro) */ SmtpGreeting = newstr(munchstring(val, NULL, '\0')); break; case O_UNIXFROM: /* UNIX From_ line (old $l macro) */ UnixFromLine = newstr(munchstring(val, NULL, '\0')); break; case O_OPCHARS: /* operator characters (old $o macro) */ OperatorChars = newstr(munchstring(val, NULL, '\0')); break; case O_DONTINITGRPS: /* don't call initgroups(3) */ DontInitGroups = atobool(val); break; case O_SLFH: /* make sure from fits on one line */ SingleLineFromHeader = atobool(val); break; case O_ABH: /* allow HELO commands with syntax errors */ AllowBogusHELO = atobool(val); break; case O_CONNTHROT: /* connection rate throttle */ ConnRateThrottle = atoi(val); break; case O_UGW: /* group writable files are unsafe */ if (!atobool(val)) DontBlameSendmail |= DBS_GROUPWRITABLEFORWARDFILESAFE|DBS_GROUPWRITABLEINCLUDEFILESAFE; break; case O_DBLBOUNCE: /* address to which to send double bounces */ if (val[0] != '\0') DoubleBounceAddr = newstr(val); else syserr("readcf: option DoubleBounceAddress: value required"); break; case O_HSDIR: /* persistent host status directory */ if (val[0] != '\0') HostStatDir = newstr(val); break; case O_SINGTHREAD: /* single thread deliveries (requires hsdir) */ SingleThreadDelivery = atobool(val); break; case O_RUNASUSER: /* run bulk of code as this user */ for (p = val; *p != '\0'; p++) { if (*p == '.' || *p == '/' || *p == ':') { *p++ = '\0'; break; } } if (isascii(*val) && isdigit(*val)) { if (can_setuid) RunAsUid = atoi(val); } else { register struct passwd *pw; pw = sm_getpwnam(val); if (pw == NULL) syserr("readcf: option RunAsUser: unknown user %s", val); else if (can_setuid) { if (*p == '\0') RunAsUserName = newstr(val); RunAsUid = pw->pw_uid; RunAsGid = pw->pw_gid; } } #ifdef UID_MAX if (RunAsUid > UID_MAX) { syserr("readcf: option RunAsUser: uid value (%ld) > UID_MAX (%ld); ignored", RunAsUid, UID_MAX); } #endif if (*p != '\0') { if (isascii(*p) && isdigit(*p)) { if (can_setuid) RunAsGid = atoi(p); } else { register struct group *gr; gr = getgrnam(p); if (gr == NULL) syserr("readcf: option RunAsUser: unknown group %s", p); else if (can_setuid) RunAsGid = gr->gr_gid; } } if (tTd(47, 5)) printf("readcf: RunAsUser = %d:%d\n", (int)RunAsUid, (int)RunAsGid); break; #if _FFR_DSN_RRT_OPTION case O_DSN_RRT: RrtImpliesDsn = atobool(val); break; #endif #if _FFR_PIDFILE_OPTION case O_PIDFILE: free(PidFile); PidFile = newstr(val); break; #endif case O_DONTBLAMESENDMAIL: p = val; for (;;) { register struct dbsval *dbs; extern struct dbsval DontBlameSendmailValues[]; while (isascii(*p) && (isspace(*p) || ispunct(*p))) p++; if (*p == '\0') break; val = p; while (isascii(*p) && isalnum(*p)) p++; if (*p != '\0') *p++ = '\0'; for (dbs = DontBlameSendmailValues; dbs->dbs_name != NULL; dbs++) { if (strcasecmp(val, dbs->dbs_name) == 0) break; } if (dbs->dbs_name == NULL) syserr("readcf: DontBlameSendmail option: %s unrecognized", val); else if (dbs->dbs_flag == DBS_SAFE) DontBlameSendmail = DBS_SAFE; else DontBlameSendmail |= dbs->dbs_flag; } sticky = FALSE; break; case O_DPI: DontProbeInterfaces = atobool(val); break; case O_MAXRCPT: MaxRcptPerMsg = atoi(val); break; #if _FFR_DEADLETTERDROP_OPTION case O_DEADLETTER: if (DeadLetterDrop != NULL) free(DeadLetterDrop); DeadLetterDrop = newstr(val); break; #endif #if _FFR_DONTLOCKFILESFORREAD_OPTION case O_DONTLOCK: DontLockReadFiles = atobool(val); break; #endif #if _FFR_MAXALIASRECURSION_OPTION case O_MAXALIASRCSN: MaxAliasRecursion = atoi(val); break; #endif #if _FFR_CONNECTONLYTO_OPTION case O_CNCTONLYTO: /* XXX should probably use gethostbyname */ ConnectOnlyTo = inet_addr(val); break; #endif #if _FFR_TRUSTED_USER case O_TRUSTUSER: if (isascii(*val) && isdigit(*val)) TrustedUid = atoi(val); else { register struct passwd *pw; TrustedUid = 0; pw = sm_getpwnam(val); if (pw == NULL) syserr("readcf: option TrustedUser: unknown user %s", val); else TrustedUid = pw->pw_uid; } #ifdef UID_MAX if (TrustedUid > UID_MAX) { syserr("readcf: option TrustedUser: uid value (%ld) > UID_MAX (%ld)", TrustedUid, UID_MAX); TrustedUid = 0; } #endif break; #endif #if _FFR_MAX_MIME_HEADER_LENGTH case O_MAXMIMEHDRLEN: p = strchr(val, '/'); if (p != NULL) *p++ = '\0'; MaxMimeHeaderLength = atoi(val); if (p != NULL && *p != '\0') MaxMimeFieldLength = atoi(p); else MaxMimeFieldLength = MaxMimeHeaderLength / 2; if (MaxMimeHeaderLength < 0) MaxMimeHeaderLength = 0; else if (MaxMimeHeaderLength < 128) printf("Warning: MaxMimeHeaderLength: header length limit set lower than 128\n"); if (MaxMimeFieldLength < 0) MaxMimeFieldLength = 0; else if (MaxMimeFieldLength < 40) printf("Warning: MaxMimeHeaderLength: field length limit set lower than 40\n"); break; #endif #if _FFR_CONTROL_SOCKET case O_CONTROLSOCKET: if (ControlSocketName != NULL) free(ControlSocketName); ControlSocketName = newstr(val); break; #endif #if _FFR_MAX_HEADERS_LENGTH case O_MAXHDRSLEN: MaxHeadersLength = atoi(val); if (MaxHeadersLength > 0 && MaxHeadersLength < (MAXHDRSLEN / 2)) printf("Warning: MaxHeadersLength: headers length limit set lower than %d\n", MAXHDRSLEN); break; #endif default: if (tTd(37, 1)) { if (isascii(opt) && isprint(opt)) printf("Warning: option %c unknown\n", opt); else printf("Warning: option 0x%x unknown\n", opt); } break; } if (sticky) setbitn(opt, StickyOpt); } /* ** SETCLASS -- set a string into a class ** ** Parameters: ** class -- the class to put the string in. ** str -- the string to enter ** ** Returns: ** none. ** ** Side Effects: ** puts the word into the symbol table. */ void setclass(class, str) int class; char *str; { register STAB *s; if (tTd(37, 8)) printf("setclass(%s, %s)\n", macname(class), str); s = stab(str, ST_CLASS, ST_ENTER); setbitn(class, s->s_class); } /* ** MAKEMAPENTRY -- create a map entry ** ** Parameters: ** line -- the config file line ** ** Returns: ** A pointer to the map that has been created. ** NULL if there was a syntax error. ** ** Side Effects: ** Enters the map into the dictionary. */ MAP * makemapentry(line) char *line; { register char *p; char *mapname; char *classname; register STAB *s; STAB *class; for (p = line; isascii(*p) && isspace(*p); p++) continue; if (!(isascii(*p) && isalnum(*p))) { syserr("readcf: config K line: no map name"); return NULL; } mapname = p; while ((isascii(*++p) && isalnum(*p)) || *p == '_' || *p == '.') continue; if (*p != '\0') *p++ = '\0'; while (isascii(*p) && isspace(*p)) p++; if (!(isascii(*p) && isalnum(*p))) { syserr("readcf: config K line, map %s: no map class", mapname); return NULL; } classname = p; while (isascii(*++p) && isalnum(*p)) continue; if (*p != '\0') *p++ = '\0'; while (isascii(*p) && isspace(*p)) p++; /* look up the class */ class = stab(classname, ST_MAPCLASS, ST_FIND); if (class == NULL) { syserr("readcf: map %s: class %s not available", mapname, classname); return NULL; } /* enter the map */ s = stab(mapname, ST_MAP, ST_ENTER); s->s_map.map_class = &class->s_mapclass; s->s_map.map_mname = newstr(mapname); if (class->s_mapclass.map_parse(&s->s_map, p)) s->s_map.map_mflags |= MF_VALID; if (tTd(37, 5)) { printf("map %s, class %s, flags %lx, file %s,\n", s->s_map.map_mname, s->s_map.map_class->map_cname, s->s_map.map_mflags, s->s_map.map_file == NULL ? "(null)" : s->s_map.map_file); printf("\tapp %s, domain %s, rebuild %s\n", s->s_map.map_app == NULL ? "(null)" : s->s_map.map_app, s->s_map.map_domain == NULL ? "(null)" : s->s_map.map_domain, s->s_map.map_rebuild == NULL ? "(null)" : s->s_map.map_rebuild); } return &s->s_map; } /* ** STRTORWSET -- convert string to rewriting set number ** ** Parameters: ** p -- the pointer to the string to decode. ** endp -- if set, store the trailing delimiter here. ** stabmode -- ST_ENTER to create this entry, ST_FIND if ** it must already exist. ** ** Returns: ** The appropriate ruleset number. ** -1 if it is not valid (error already printed) */ int strtorwset(p, endp, stabmode) char *p; char **endp; int stabmode; { int ruleset; static int nextruleset = MAXRWSETS; while (isascii(*p) && isspace(*p)) p++; if (!isascii(*p)) { syserr("invalid ruleset name: \"%.20s\"", p); return -1; } if (isdigit(*p)) { ruleset = strtol(p, endp, 10); if (ruleset >= MAXRWSETS / 2 || ruleset < 0) { syserr("bad ruleset %d (%d max)", ruleset, MAXRWSETS / 2); ruleset = -1; } } else { STAB *s; char delim; char *q; q = p; while (*p != '\0' && isascii(*p) && (isalnum(*p) || *p == '_')) p++; if (q == p || !(isascii(*q) && isalpha(*q))) { /* no valid characters */ syserr("invalid ruleset name: \"%.20s\"", q); return -1; } while (isascii(*p) && isspace(*p)) *p++ = '\0'; delim = *p; if (delim != '\0') *p = '\0'; s = stab(q, ST_RULESET, stabmode); if (delim != '\0') *p = delim; if (s == NULL) return -1; if (stabmode == ST_ENTER && delim == '=') { while (isascii(*++p) && isspace(*p)) continue; if (!(isascii(*p) && isdigit(*p))) { syserr("bad ruleset definition \"%s\" (number required after `=')", q); ruleset = -1; } else { ruleset = strtol(p, endp, 10); if (ruleset >= MAXRWSETS / 2 || ruleset < 0) { syserr("bad ruleset number %d in \"%s\" (%d max)", ruleset, q, MAXRWSETS / 2); ruleset = -1; } } } else { if (endp != NULL) *endp = p; if (s->s_ruleset > 0) ruleset = s->s_ruleset; else if ((ruleset = --nextruleset) < MAXRWSETS / 2) { syserr("%s: too many named rulesets (%d max)", q, MAXRWSETS / 2); ruleset = -1; } } if (s->s_ruleset > 0 && ruleset >= 0 && ruleset != s->s_ruleset) { syserr("%s: ruleset changed value (old %d, new %d)", q, s->s_ruleset, ruleset); ruleset = s->s_ruleset; } else if (ruleset > 0) { s->s_ruleset = ruleset; } } return ruleset; } /* ** INITTIMEOUTS -- parse and set timeout values ** ** Parameters: ** val -- a pointer to the values. If NULL, do initial ** settings. ** ** Returns: ** none. ** ** Side Effects: ** Initializes the TimeOuts structure */ #define SECONDS #define MINUTES * 60 #define HOUR * 3600 void inittimeouts(val) register char *val; { register char *p; extern time_t convtime __P((char *, char)); if (tTd(37, 2)) printf("inittimeouts(%s)\n", val == NULL ? "" : val); if (val == NULL) { TimeOuts.to_connect = (time_t) 0 SECONDS; TimeOuts.to_initial = (time_t) 5 MINUTES; TimeOuts.to_helo = (time_t) 5 MINUTES; TimeOuts.to_mail = (time_t) 10 MINUTES; TimeOuts.to_rcpt = (time_t) 1 HOUR; TimeOuts.to_datainit = (time_t) 5 MINUTES; TimeOuts.to_datablock = (time_t) 1 HOUR; TimeOuts.to_datafinal = (time_t) 1 HOUR; TimeOuts.to_rset = (time_t) 5 MINUTES; TimeOuts.to_quit = (time_t) 2 MINUTES; TimeOuts.to_nextcommand = (time_t) 1 HOUR; TimeOuts.to_miscshort = (time_t) 2 MINUTES; #if IDENTPROTO TimeOuts.to_ident = (time_t) 30 SECONDS; #else TimeOuts.to_ident = (time_t) 0 SECONDS; #endif TimeOuts.to_fileopen = (time_t) 60 SECONDS; if (tTd(37, 5)) { printf("Timeouts:\n"); printf(" connect = %ld\n", (long)TimeOuts.to_connect); printf(" initial = %ld\n", (long)TimeOuts.to_initial); printf(" helo = %ld\n", (long)TimeOuts.to_helo); printf(" mail = %ld\n", (long)TimeOuts.to_mail); printf(" rcpt = %ld\n", (long)TimeOuts.to_rcpt); printf(" datainit = %ld\n", (long)TimeOuts.to_datainit); printf(" datablock = %ld\n", (long)TimeOuts.to_datablock); printf(" datafinal = %ld\n", (long)TimeOuts.to_datafinal); printf(" rset = %ld\n", (long)TimeOuts.to_rset); printf(" quit = %ld\n", (long)TimeOuts.to_quit); printf(" nextcommand = %ld\n", (long)TimeOuts.to_nextcommand); printf(" miscshort = %ld\n", (long)TimeOuts.to_miscshort); printf(" ident = %ld\n", (long)TimeOuts.to_ident); printf(" fileopen = %ld\n", (long)TimeOuts.to_fileopen); } return; } for (;; val = p) { while (isascii(*val) && isspace(*val)) val++; if (*val == '\0') break; for (p = val; *p != '\0' && *p != ','; p++) continue; if (*p != '\0') *p++ = '\0'; if (isascii(*val) && isdigit(*val)) { /* old syntax -- set everything */ TimeOuts.to_mail = convtime(val, 'm'); TimeOuts.to_rcpt = TimeOuts.to_mail; TimeOuts.to_datainit = TimeOuts.to_mail; TimeOuts.to_datablock = TimeOuts.to_mail; TimeOuts.to_datafinal = TimeOuts.to_mail; TimeOuts.to_nextcommand = TimeOuts.to_mail; continue; } else { register char *q = strchr(val, ':'); if (q == NULL && (q = strchr(val, '=')) == NULL) { /* syntax error */ continue; } *q++ = '\0'; settimeout(val, q); } } } /* ** SETTIMEOUT -- set an individual timeout ** ** Parameters: ** name -- the name of the timeout. ** val -- the value of the timeout. ** ** Returns: ** none. */ void settimeout(name, val) char *name; char *val; { register char *p; time_t to; extern time_t convtime __P((char *, char)); if (tTd(37, 2)) printf("settimeout(%s = %s)\n", name, val); to = convtime(val, 'm'); p = strchr(name, '.'); if (p != NULL) *p++ = '\0'; if (strcasecmp(name, "initial") == 0) TimeOuts.to_initial = to; else if (strcasecmp(name, "mail") == 0) TimeOuts.to_mail = to; else if (strcasecmp(name, "rcpt") == 0) TimeOuts.to_rcpt = to; else if (strcasecmp(name, "datainit") == 0) TimeOuts.to_datainit = to; else if (strcasecmp(name, "datablock") == 0) TimeOuts.to_datablock = to; else if (strcasecmp(name, "datafinal") == 0) TimeOuts.to_datafinal = to; else if (strcasecmp(name, "command") == 0) TimeOuts.to_nextcommand = to; else if (strcasecmp(name, "rset") == 0) TimeOuts.to_rset = to; else if (strcasecmp(name, "helo") == 0) TimeOuts.to_helo = to; else if (strcasecmp(name, "quit") == 0) TimeOuts.to_quit = to; else if (strcasecmp(name, "misc") == 0) TimeOuts.to_miscshort = to; else if (strcasecmp(name, "ident") == 0) TimeOuts.to_ident = to; else if (strcasecmp(name, "fileopen") == 0) TimeOuts.to_fileopen = to; else if (strcasecmp(name, "connect") == 0) TimeOuts.to_connect = to; else if (strcasecmp(name, "iconnect") == 0) TimeOuts.to_iconnect = to; else if (strcasecmp(name, "queuewarn") == 0) { to = convtime(val, 'h'); if (p == NULL || strcmp(p, "*") == 0) { TimeOuts.to_q_warning[TOC_NORMAL] = to; TimeOuts.to_q_warning[TOC_URGENT] = to; TimeOuts.to_q_warning[TOC_NONURGENT] = to; } else if (strcasecmp(p, "normal") == 0) TimeOuts.to_q_warning[TOC_NORMAL] = to; else if (strcasecmp(p, "urgent") == 0) TimeOuts.to_q_warning[TOC_URGENT] = to; else if (strcasecmp(p, "non-urgent") == 0) TimeOuts.to_q_warning[TOC_NONURGENT] = to; else syserr("settimeout: invalid queuewarn subtimeout %s", p); } else if (strcasecmp(name, "queuereturn") == 0) { to = convtime(val, 'd'); if (p == NULL || strcmp(p, "*") == 0) { TimeOuts.to_q_return[TOC_NORMAL] = to; TimeOuts.to_q_return[TOC_URGENT] = to; TimeOuts.to_q_return[TOC_NONURGENT] = to; } else if (strcasecmp(p, "normal") == 0) TimeOuts.to_q_return[TOC_NORMAL] = to; else if (strcasecmp(p, "urgent") == 0) TimeOuts.to_q_return[TOC_URGENT] = to; else if (strcasecmp(p, "non-urgent") == 0) TimeOuts.to_q_return[TOC_NONURGENT] = to; else syserr("settimeout: invalid queuereturn subtimeout %s", p); } else if (strcasecmp(name, "hoststatus") == 0) MciInfoTimeout = convtime(val, 'm'); else syserr("settimeout: invalid timeout %s", name); }