diff options
Diffstat (limited to 'usr.sbin/sendmail/src/readcf.c')
| -rw-r--r-- | usr.sbin/sendmail/src/readcf.c | 1681 |
1 files changed, 1681 insertions, 0 deletions
diff --git a/usr.sbin/sendmail/src/readcf.c b/usr.sbin/sendmail/src/readcf.c new file mode 100644 index 0000000..bd902c0 --- /dev/null +++ b/usr.sbin/sendmail/src/readcf.c @@ -0,0 +1,1681 @@ +/* + * Copyright (c) 1983 Eric P. Allman + * Copyright (c) 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char sccsid[] = "@(#)readcf.c 8.23 (Berkeley) 3/18/94"; +#endif /* not lint */ + +# include "sendmail.h" +# include <pwd.h> +# include <grp.h> +#if NAMED_BIND +# include <arpa/nameser.h> +# include <resolv.h> +#endif + +/* +** READCF -- read control file. +** +** This routine reads the control 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. +** +** Parameters: +** cfname -- control 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. +*/ + +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; + char buf[MAXLINE]; + register char *p; + extern char **copyplist(); + struct stat statb; + char exbuf[MAXLINE]; + char pvpbuf[MAXLINE + MAXATOM]; + extern char *munchstring(); + extern void makemapentry(); + + FileName = cfname; + LineNumber = 0; + + cf = fopen(cfname, "r"); + if (cf == NULL) + { + syserr("cannot open"); + exit(EX_OSFILE); + } + + if (fstat(fileno(cf), &statb) < 0) + { + syserr("cannot fstat"); + exit(EX_OSFILE); + } + + if (!S_ISREG(statb.st_mode)) + { + syserr("not a plain file"); + exit(EX_OSFILE); + } + + if (OpMode != MD_TEST && bitset(S_IWGRP|S_IWOTH, statb.st_mode)) + { + if (OpMode == MD_DAEMON || OpMode == MD_FREEZE) + fprintf(stderr, "%s: WARNING: dangerous write permissions\n", + FileName); +#ifdef LOG + if (LogLevel > 0) + syslog(LOG_CRIT, "%s: WARNING: dangerous write permissions", + FileName); +#endif + } + +#ifdef XLA + xla_zero(); +#endif + + while ((bp = fgetfolded(buf, sizeof buf, cf)) != NULL) + { + if (bp[0] == '#') + { + if (bp != buf) + free(bp); + continue; + } + + /* map $ into \201 for macro expansion */ + 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 $# -- let it go through */ + p++; + break; + + case '\\': + /* it's backslash escaped */ + (void) strcpy(p, p + 1); + break; + + default: + /* delete preceeding white space */ + while (isascii(*p) && isspace(*p) && p > bp) + p--; + if ((e = strchr(++p, '\n')) != NULL) + (void) strcpy(p, e); + else + p[0] = p[1] = '\0'; + break; + } + continue; + } + + if (*p != '$') + continue; + + if (p[1] == '$') + { + /* actual dollar sign.... */ + (void) strcpy(p, p + 1); + continue; + } + + /* convert to macro expansion character */ + *p = MACROEXPAND; + } + + /* 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, &exbuf[sizeof exbuf], e); + rwp->r_lhs = prescan(exbuf, '\t', pvpbuf, + sizeof pvpbuf, 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-$9"; + break; + + case CANONNET: + botch = "$#"; + break; + + case CANONUSER: + botch = "$:"; + break; + + case CALLSUBR: + botch = "$>"; + break; + + case CONDIF: + botch = "$?"; + break; + + case CONDELSE: + botch = "$|"; + 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"); + + /* expand and save the RHS */ + while (*++p == '\t') + continue; + q = p; + while (*p != '\0' && *p != '\t') + p++; + *p = '\0'; + expand(q, exbuf, &exbuf[sizeof exbuf], e); + rwp->r_rhs = prescan(exbuf, '\t', pvpbuf, + sizeof pvpbuf, 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"); + break; + + case 'S': /* select rewriting set */ + for (p = &bp[1]; isascii(*p) && isspace(*p); p++) + continue; + if (!isascii(*p) || !isdigit(*p)) + { + syserr("invalid argument to S line: \"%.20s\"", + &bp[1]); + break; + } + ruleset = atoi(p); + if (ruleset >= MAXRWSETS || ruleset < 0) + { + syserr("bad ruleset %d (%d max)", ruleset, MAXRWSETS); + ruleset = 0; + } + rwp = NULL; + break; + + case 'D': /* macro definition */ + p = munchstring(&bp[2], NULL); + define(bp[1], newstr(p), e); + break; + + case 'H': /* required header line */ + (void) chompheader(&bp[1], TRUE, e); + break; + + case 'C': /* word class */ + /* scan the list of words and set class for all */ + expand(&bp[2], exbuf, &exbuf[sizeof exbuf], e); + for (p = exbuf; *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(bp[1], wd); + *p = delim; + } + break; + + case 'F': /* word class from file */ + for (p = &bp[2]; 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; + while (*p != '\0' && !(isascii(*p) && isspace(*p))) + p++; + if (*p == '\0') + p = "%s"; + else + { + *p = '\0'; + while (isascii(*++p) && isspace(*p)) + continue; + } + fileclass(bp[1], file, p, safe, optional); + break; + +#ifdef XLA + case 'L': /* extended load average description */ + xla_init(&bp[1]); + 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 != '\t'; 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 'T': /* trusted user(s) */ + /* this option is obsolete, but will be ignored */ + 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); + if (ConfigLevel >= 5) + { + /* level 5 configs have short name in $w */ + p = macvalue('w', e); + if (p != NULL && (p = strchr(p, '.')) != NULL) + *p = '\0'; + } + if (*ep++ == '/') + { + /* 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': + makemapentry(&bp[1]); + break; + + default: + badline: + syserr("unknown control line \"%s\"", bp); + } + if (bp != buf) + free(bp); + } + if (ferror(cf)) + { + syserr("I/O read error", cfname); + exit(EX_OSFILE); + } + fclose(cf); + FileName = NULL; + + if (stab("host", ST_MAP, ST_FIND) == NULL) + { + /* user didn't initialize: set up host map */ + strcpy(buf, "host host"); +#if NAMED_BIND + if (ConfigLevel >= 2) + strcat(buf, " -a."); +#endif + makemapentry(buf); + } +} + /* +** 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. +*/ + +toomany(id, maxcnt) + char 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. +*/ + +fileclass(class, filename, fmt, safe, optional) + int class; + char *filename; + char *fmt; + bool safe; + bool optional; +{ + FILE *f; + struct stat stbuf; + char buf[MAXLINE]; + + if (tTd(37, 2)) + printf("fileclass(%s, fmt=%s)\n", filename, fmt); + + if (filename[0] == '|') + { + syserr("fileclass: pipes (F%c%s) not supported due to security problems", + class, filename); + return; + } + if (stat(filename, &stbuf) < 0) + { + if (tTd(37, 2)) + printf(" cannot stat (%s)\n", errstring(errno)); + if (!optional) + syserr("fileclass: cannot stat %s", filename); + return; + } + if (!S_ISREG(stbuf.st_mode)) + { + syserr("fileclass: %s not a regular file", filename); + return; + } + if (!safe && access(filename, R_OK) < 0) + { + syserr("fileclass: access denied on %s", filename); + return; + } + f = fopen(filename, "r"); + if (f == NULL) + { + syserr("fileclass: cannot open %s", filename); + return; + } + + while (fgets(buf, sizeof buf, f) != NULL) + { + register STAB *s; + register char *p; +# ifdef SCANF + char wordbuf[MAXNAME+1]; + + 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); +} + /* +** MAKEMAILER -- define a new mailer. +** +** Parameters: +** line -- description of mailer. This is in labeled +** fields. The fields are: +** P -- the path to the mailer +** F -- the flags associated with the mailer +** A -- the argv for this mailer +** S -- the sender rewriting set +** R -- the recipient rewriting set +** E -- the eol string +** The first word is the canonical name of the mailer. +** +** Returns: +** none. +** +** Side Effects: +** enters the mailer into the mailer table. +*/ + +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(); + extern char *munchstring(); + extern long atol(); + + /* allocate a mailer and set up defaults */ + m = (struct mailer *) xalloc(sizeof *m); + bzero((char *) m, sizeof *m); + m->m_eol = "\n"; + + /* collect the mailer name */ + for (p = line; *p != '\0' && *p != ',' && !(isascii(*p) && isspace(*p)); p++) + continue; + if (*p != '\0') + *p++ = '\0'; + 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 */ + 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 = strtol(p, &endp, 10); + if (i < 0 || i >= MAXRWSETS) + { + syserr("invalid rewrite set, %d max", MAXRWSETS); + 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 = strtol(p, NULL, 10); + if (i < 0 || i >= MAXRWSETS) + { + syserr("invalid rewrite set, %d max", + MAXRWSETS); + return; + } + if (fcode == 'S') + m->m_sh_rwset = i; + else + m->m_rh_rwset = i; + } + break; + + case 'E': /* end of line string */ + m->m_eol = newstr(p); + break; + + case 'A': /* argument vector */ + 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); + break; + + case 'D': /* working directory */ + m->m_execdir = newstr(p); + break; + } + + p = delimptr; + } + + /* 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); + } + + /* 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; + } + + 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. +** +** Returns: +** the munched string. +*/ + +char * +munchstring(p, delimptr) + register char *p; + char **delimptr; +{ + register char *q; + bool backslash = FALSE; + bool quotemode = FALSE; + static char buf[MAXLINE]; + + for (q = buf; *p != '\0'; 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 != ',') + *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. +*/ + +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); + } + } +} + + /* +** 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 */ + + +#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, /* to avoid error on old syntax */ + NULL, 0 +}; + +#endif + +setoption(opt, val, safe, sticky, e) + char opt; + char *val; + bool safe; + bool sticky; + register ENVELOPE *e; +{ + register char *p; + extern bool atobool(); + extern time_t convtime(); + extern int QueueLA; + extern int RefuseLA; + extern bool Warn_Q_option; + extern bool trusteduser(); + + if (tTd(37, 1)) + printf("setoption %c=%s", opt, 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 && strchr("bCdeijLmoprsvw7", opt) == NULL) + { + if (opt != 'M' || (val[0] != 'r' && val[0] != 's')) + { + if (tTd(37, 1)) + printf(" (unsafe)"); + if (RealUid != geteuid()) + { + if (tTd(37, 1)) + printf("(Resetting uid)"); + (void) setgid(RealGid); + (void) setuid(RealUid); + } + } + } + if (tTd(37, 1)) + printf("\n"); + + switch (opt) + { + case '7': /* force seven-bit input */ + SevenBit = atobool(val); + break; + + 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 */ +#ifndef QUEUE + syserr("need QUEUE to set -odqueue"); +#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); + exit(EX_USAGE); + } + 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) */ + HoldErrs = TRUE; + /* fall through... */ + + 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 */ + if (isascii(*val) && isdigit(*val)) + DefGid = atoi(val); + else + { + register struct group *gr; + + DefGid = -1; + gr = getgrnam(val); + if (gr == NULL) + syserr("readcf: option g: unknown group %s", 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 + UseNameServer = TRUE; + 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'; + 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\n", _res.options); +#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 */ + define(val[0], newstr(&val[1]), 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 */ + setdaemonoptions(val); + 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; + } + 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 */ + settimeouts(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'; + TimeOuts.to_q_warning = convtime(p, 'd'); + } + TimeOuts.to_q_return = convtime(val, 'h'); + 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 */ + if (isascii(*val) && isdigit(*val)) + DefUid = atoi(val); + else + { + register struct passwd *pw; + + DefUid = -1; + pw = getpwnam(val); + if (pw == NULL) + syserr("readcf: option u: unknown user %s", val); + else + DefUid = pw->pw_uid; + } + setdefuser(); + break; + + case 'V': /* fallback MX host */ + FallBackMX = newstr(val); + break; + + case 'v': /* run in verbose mode */ + Verbose = atobool(val); + 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; + + default: + break; + } + if (sticky) + setbitn(opt, StickyOpt); + return; +} + /* +** SETCLASS -- set a word into a class +** +** Parameters: +** class -- the class to put the word in. +** word -- the word to enter +** +** Returns: +** none. +** +** Side Effects: +** puts the word into the symbol table. +*/ + +setclass(class, word) + int class; + char *word; +{ + register STAB *s; + + if (tTd(37, 8)) + printf("setclass(%c, %s)\n", class, word); + s = stab(word, ST_CLASS, ST_ENTER); + setbitn(class, s->s_class); +} + /* +** MAKEMAPENTRY -- create a map entry +** +** Parameters: +** line -- the config file line +** +** Returns: +** TRUE if it successfully entered the map entry. +** FALSE otherwise (usually syntax error). +** +** Side Effects: +** Enters the map into the dictionary. +*/ + +void +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; + } + + mapname = p; + while (isascii(*++p) && isalnum(*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; + } + 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; + } + + /* 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 %x, 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); + } +} + /* +** SETTIMEOUTS -- 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 + +settimeouts(val) + register char *val; +{ + register char *p; + extern time_t convtime(); + + if (val == NULL) + { + 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; + TimeOuts.to_ident = (time_t) 30 SECONDS; + 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, '='); + time_t to; + + if (q == NULL) + { + /* syntax error */ + continue; + } + *q++ = '\0'; + to = convtime(q, 'm'); + + if (strcasecmp(val, "initial") == 0) + TimeOuts.to_initial = to; + else if (strcasecmp(val, "mail") == 0) + TimeOuts.to_mail = to; + else if (strcasecmp(val, "rcpt") == 0) + TimeOuts.to_rcpt = to; + else if (strcasecmp(val, "datainit") == 0) + TimeOuts.to_datainit = to; + else if (strcasecmp(val, "datablock") == 0) + TimeOuts.to_datablock = to; + else if (strcasecmp(val, "datafinal") == 0) + TimeOuts.to_datafinal = to; + else if (strcasecmp(val, "command") == 0) + TimeOuts.to_nextcommand = to; + else if (strcasecmp(val, "rset") == 0) + TimeOuts.to_rset = to; + else if (strcasecmp(val, "helo") == 0) + TimeOuts.to_helo = to; + else if (strcasecmp(val, "quit") == 0) + TimeOuts.to_quit = to; + else if (strcasecmp(val, "misc") == 0) + TimeOuts.to_miscshort = to; + else if (strcasecmp(val, "ident") == 0) + TimeOuts.to_ident = to; + else + syserr("settimeouts: invalid timeout %s", val); + } + } +} |
