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/* $OpenBSD: to.c,v 1.28 2016/05/30 12:33:44 mpi Exp $ */ |
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/* |
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* Copyright (c) 2009 Jacek Masiulaniec <jacekm@dobremiasto.net> |
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* Copyright (c) 2012 Eric Faurot <eric@openbsd.org> |
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* Copyright (c) 2012 Gilles Chehade <gilles@poolp.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <sys/types.h> |
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#include <sys/queue.h> |
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#include <sys/tree.h> |
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#include <sys/socket.h> |
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#include <sys/stat.h> |
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#include <sys/resource.h> |
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#include <netinet/in.h> |
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#include <arpa/inet.h> |
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#include <ctype.h> |
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#include <err.h> |
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#include <errno.h> |
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#include <event.h> |
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#include <fcntl.h> |
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#include <imsg.h> |
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#include <limits.h> |
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#include <inttypes.h> |
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#include <libgen.h> |
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#include <netdb.h> |
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#include <pwd.h> |
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#include <stdarg.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <time.h> |
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#include <unistd.h> |
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#include "smtpd.h" |
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#include "log.h" |
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static const char *in6addr_to_text(const struct in6_addr *); |
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static int alias_is_maildir(struct expandnode *, const char *, size_t); |
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static int alias_is_filter(struct expandnode *, const char *, size_t); |
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static int alias_is_username(struct expandnode *, const char *, size_t); |
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static int alias_is_address(struct expandnode *, const char *, size_t); |
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static int alias_is_filename(struct expandnode *, const char *, size_t); |
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static int alias_is_include(struct expandnode *, const char *, size_t); |
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static int alias_is_error(struct expandnode *, const char *, size_t); |
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const char * |
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sockaddr_to_text(struct sockaddr *sa) |
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{ |
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static char buf[NI_MAXHOST]; |
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if (getnameinfo(sa, sa->sa_len, buf, sizeof(buf), NULL, 0, |
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NI_NUMERICHOST)) |
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return ("(unknown)"); |
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else |
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return (buf); |
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} |
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static const char * |
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in6addr_to_text(const struct in6_addr *addr) |
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{ |
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struct sockaddr_in6 sa_in6; |
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uint16_t tmp16; |
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memset(&sa_in6, 0, sizeof(sa_in6)); |
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sa_in6.sin6_len = sizeof(sa_in6); |
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sa_in6.sin6_family = AF_INET6; |
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memcpy(&sa_in6.sin6_addr, addr, sizeof(sa_in6.sin6_addr)); |
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/* XXX thanks, KAME, for this ugliness... adopted from route/show.c */ |
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if (IN6_IS_ADDR_LINKLOCAL(&sa_in6.sin6_addr) || |
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IN6_IS_ADDR_MC_LINKLOCAL(&sa_in6.sin6_addr)) { |
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memcpy(&tmp16, &sa_in6.sin6_addr.s6_addr[2], sizeof(tmp16)); |
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sa_in6.sin6_scope_id = ntohs(tmp16); |
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sa_in6.sin6_addr.s6_addr[2] = 0; |
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sa_in6.sin6_addr.s6_addr[3] = 0; |
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} |
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return (sockaddr_to_text((struct sockaddr *)&sa_in6)); |
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} |
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int |
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text_to_mailaddr(struct mailaddr *maddr, const char *email) |
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{ |
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char *username; |
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char *hostname; |
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char buffer[LINE_MAX]; |
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if (strlcpy(buffer, email, sizeof buffer) >= sizeof buffer) |
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return 0; |
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memset(maddr, 0, sizeof *maddr); |
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username = buffer; |
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hostname = strrchr(username, '@'); |
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if (hostname == NULL) { |
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if (strlcpy(maddr->user, username, sizeof maddr->user) |
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>= sizeof maddr->user) |
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return 0; |
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} |
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else if (username == hostname) { |
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*hostname++ = '\0'; |
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if (strlcpy(maddr->domain, hostname, sizeof maddr->domain) |
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>= sizeof maddr->domain) |
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return 0; |
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} |
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else { |
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*hostname++ = '\0'; |
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if (strlcpy(maddr->user, username, sizeof maddr->user) |
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>= sizeof maddr->user) |
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return 0; |
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if (strlcpy(maddr->domain, hostname, sizeof maddr->domain) |
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>= sizeof maddr->domain) |
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return 0; |
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} |
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return 1; |
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} |
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const char * |
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mailaddr_to_text(const struct mailaddr *maddr) |
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{ |
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static char buffer[LINE_MAX]; |
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(void)strlcpy(buffer, maddr->user, sizeof buffer); |
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(void)strlcat(buffer, "@", sizeof buffer); |
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if (strlcat(buffer, maddr->domain, sizeof buffer) >= sizeof buffer) |
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return NULL; |
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return buffer; |
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} |
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const char * |
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sa_to_text(const struct sockaddr *sa) |
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{ |
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static char buf[NI_MAXHOST + 5]; |
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char *p; |
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buf[0] = '\0'; |
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p = buf; |
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if (sa->sa_family == AF_LOCAL) |
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(void)strlcpy(buf, "local", sizeof buf); |
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else if (sa->sa_family == AF_INET) { |
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in_addr_t addr; |
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addr = ((const struct sockaddr_in *)sa)->sin_addr.s_addr; |
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addr = ntohl(addr); |
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(void)bsnprintf(p, NI_MAXHOST, "%d.%d.%d.%d", |
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(addr >> 24) & 0xff, (addr >> 16) & 0xff, |
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(addr >> 8) & 0xff, addr & 0xff); |
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} |
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else if (sa->sa_family == AF_INET6) { |
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const struct sockaddr_in6 *in6; |
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const struct in6_addr *in6_addr; |
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in6 = (const struct sockaddr_in6 *)sa; |
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(void)strlcpy(buf, "IPv6:", sizeof(buf)); |
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p = buf + 5; |
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in6_addr = &in6->sin6_addr; |
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(void)bsnprintf(p, NI_MAXHOST, "%s", in6addr_to_text(in6_addr)); |
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} |
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return (buf); |
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} |
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const char * |
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ss_to_text(const struct sockaddr_storage *ss) |
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{ |
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return (sa_to_text((const struct sockaddr*)ss)); |
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} |
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const char * |
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time_to_text(time_t when) |
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{ |
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struct tm *lt; |
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static char buf[40]; |
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char *day[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}; |
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char *month[] = {"Jan","Feb","Mar","Apr","May","Jun", |
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"Jul","Aug","Sep","Oct","Nov","Dec"}; |
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char *tz; |
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long offset; |
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lt = localtime(&when); |
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✗✓ |
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if (lt == NULL || when == 0) |
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fatalx("time_to_text: localtime"); |
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offset = lt->tm_gmtoff; |
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tz = lt->tm_zone; |
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/* We do not use strftime because it is subject to locale substitution*/ |
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✗✓ |
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if (!bsnprintf(buf, sizeof(buf), |
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"%s, %d %s %d %02d:%02d:%02d %c%02d%02d (%s)", |
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day[lt->tm_wday], lt->tm_mday, month[lt->tm_mon], |
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lt->tm_year + 1900, |
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lt->tm_hour, lt->tm_min, lt->tm_sec, |
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offset >= 0 ? '+' : '-', |
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abs((int)offset / 3600), |
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abs((int)offset % 3600) / 60, |
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tz)) |
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fatalx("time_to_text: bsnprintf"); |
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return buf; |
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} |
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const char * |
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duration_to_text(time_t t) |
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{ |
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static char dst[64]; |
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char buf[64]; |
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int h, m, s; |
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long long d; |
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if (t == 0) { |
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(void)strlcpy(dst, "0s", sizeof dst); |
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return (dst); |
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} |
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dst[0] = '\0'; |
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if (t < 0) { |
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(void)strlcpy(dst, "-", sizeof dst); |
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t = -t; |
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} |
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s = t % 60; |
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t /= 60; |
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m = t % 60; |
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t /= 60; |
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h = t % 24; |
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d = t / 24; |
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if (d) { |
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(void)snprintf(buf, sizeof buf, "%lldd", d); |
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(void)strlcat(dst, buf, sizeof dst); |
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} |
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if (h) { |
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(void)snprintf(buf, sizeof buf, "%dh", h); |
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(void)strlcat(dst, buf, sizeof dst); |
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} |
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if (m) { |
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(void)snprintf(buf, sizeof buf, "%dm", m); |
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(void)strlcat(dst, buf, sizeof dst); |
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} |
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if (s) { |
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(void)snprintf(buf, sizeof buf, "%ds", s); |
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(void)strlcat(dst, buf, sizeof dst); |
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} |
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return (dst); |
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} |
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int |
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text_to_netaddr(struct netaddr *netaddr, const char *s) |
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{ |
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struct sockaddr_storage ss; |
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struct sockaddr_in ssin; |
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struct sockaddr_in6 ssin6; |
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int bits; |
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276 |
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memset(&ssin, 0, sizeof(struct sockaddr_in)); |
277 |
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memset(&ssin6, 0, sizeof(struct sockaddr_in6)); |
278 |
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279 |
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if (strncasecmp("IPv6:", s, 5) == 0) |
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s += 5; |
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282 |
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bits = inet_net_pton(AF_INET, s, &ssin.sin_addr, |
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sizeof(struct in_addr)); |
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if (bits != -1) { |
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ssin.sin_family = AF_INET; |
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memcpy(&ss, &ssin, sizeof(ssin)); |
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ss.ss_len = sizeof(struct sockaddr_in); |
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} else { |
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bits = inet_net_pton(AF_INET6, s, &ssin6.sin6_addr, |
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sizeof(struct in6_addr)); |
291 |
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if (bits == -1) |
292 |
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return 0; |
293 |
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ssin6.sin6_family = AF_INET6; |
294 |
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memcpy(&ss, &ssin6, sizeof(ssin6)); |
295 |
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ss.ss_len = sizeof(struct sockaddr_in6); |
296 |
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} |
297 |
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298 |
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netaddr->ss = ss; |
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netaddr->bits = bits; |
300 |
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return 1; |
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} |
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303 |
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int |
304 |
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text_to_relayhost(struct relayhost *relay, const char *s) |
305 |
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{ |
306 |
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static const struct schema { |
307 |
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const char *name; |
308 |
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uint16_t flags; |
309 |
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} schemas [] = { |
310 |
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/* |
311 |
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* new schemas should be *appended* otherwise the default |
312 |
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* schema index needs to be updated later in this function. |
313 |
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*/ |
314 |
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{ "smtp://", 0 }, |
315 |
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{ "lmtp://", F_LMTP }, |
316 |
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{ "smtp+tls://", F_TLS_OPTIONAL }, |
317 |
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{ "smtps://", F_SMTPS }, |
318 |
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{ "tls://", F_STARTTLS }, |
319 |
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{ "smtps+auth://", F_SMTPS|F_AUTH }, |
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{ "tls+auth://", F_STARTTLS|F_AUTH }, |
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{ "secure://", F_SMTPS|F_STARTTLS }, |
322 |
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{ "secure+auth://", F_SMTPS|F_STARTTLS|F_AUTH }, |
323 |
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{ "backup://", F_BACKUP }, |
324 |
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{ "tls+backup://", F_BACKUP|F_STARTTLS } |
325 |
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}; |
326 |
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const char *errstr = NULL; |
327 |
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char *p, *q; |
328 |
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char buffer[1024]; |
329 |
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char *beg, *end; |
330 |
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size_t i; |
331 |
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size_t len; |
332 |
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333 |
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memset(buffer, 0, sizeof buffer); |
334 |
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if (strlcpy(buffer, s, sizeof buffer) >= sizeof buffer) |
335 |
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return 0; |
336 |
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337 |
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for (i = 0; i < nitems(schemas); ++i) |
338 |
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if (strncasecmp(schemas[i].name, s, |
339 |
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strlen(schemas[i].name)) == 0) |
340 |
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break; |
341 |
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342 |
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if (i == nitems(schemas)) { |
343 |
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/* there is a schema, but it's not recognized */ |
344 |
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if (strstr(buffer, "://")) |
345 |
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return 0; |
346 |
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347 |
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/* no schema, default to smtp+tls:// */ |
348 |
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i = 2; |
349 |
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p = buffer; |
350 |
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} |
351 |
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else |
352 |
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p = buffer + strlen(schemas[i].name); |
353 |
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354 |
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relay->flags = schemas[i].flags; |
355 |
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356 |
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/* need to specify an explicit port for LMTP */ |
357 |
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if (relay->flags & F_LMTP) |
358 |
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relay->port = 0; |
359 |
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360 |
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/* first, we extract the label if any */ |
361 |
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if ((q = strchr(p, '@')) != NULL) { |
362 |
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*q = 0; |
363 |
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if (strlcpy(relay->authlabel, p, sizeof (relay->authlabel)) |
364 |
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>= sizeof (relay->authlabel)) |
365 |
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return 0; |
366 |
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p = q + 1; |
367 |
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} |
368 |
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|
369 |
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/* then, we extract the mail exchanger */ |
370 |
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beg = end = p; |
371 |
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if (*beg == '[') { |
372 |
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if ((end = strchr(beg, ']')) == NULL) |
373 |
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return 0; |
374 |
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/* skip ']', it has to be included in the relay hostname */ |
375 |
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|
++end; |
376 |
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len = end - beg; |
377 |
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} |
378 |
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else { |
379 |
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for (end = beg; *end; ++end) |
380 |
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if (!isalnum((unsigned char)*end) && |
381 |
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*end != '_' && *end != '.' && *end != '-') |
382 |
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break; |
383 |
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len = end - beg; |
384 |
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} |
385 |
|
|
if (len >= sizeof relay->hostname) |
386 |
|
|
return 0; |
387 |
|
|
for (i = 0; i < len; ++i) |
388 |
|
|
relay->hostname[i] = beg[i]; |
389 |
|
|
relay->hostname[i] = 0; |
390 |
|
|
|
391 |
|
|
/* finally, we extract the port */ |
392 |
|
|
p = beg + len; |
393 |
|
|
if (*p == ':') { |
394 |
|
|
relay->port = strtonum(p+1, 1, 0xffff, &errstr); |
395 |
|
|
if (errstr) |
396 |
|
|
return 0; |
397 |
|
|
} |
398 |
|
|
|
399 |
|
|
if (!valid_domainpart(relay->hostname)) |
400 |
|
|
return 0; |
401 |
|
|
if ((relay->flags & F_LMTP) && (relay->port == 0)) |
402 |
|
|
return 0; |
403 |
|
|
if (relay->authlabel[0] == '\0' && relay->flags & F_AUTH) |
404 |
|
|
return 0; |
405 |
|
|
if (relay->authlabel[0] != '\0' && !(relay->flags & F_AUTH)) |
406 |
|
|
return 0; |
407 |
|
|
return 1; |
408 |
|
|
} |
409 |
|
|
|
410 |
|
|
const char * |
411 |
|
|
relayhost_to_text(const struct relayhost *relay) |
412 |
|
|
{ |
413 |
|
|
static char buf[4096]; |
414 |
|
|
char port[4096]; |
415 |
|
|
uint16_t mask = F_SMTPS|F_STARTTLS|F_AUTH|F_TLS_OPTIONAL|F_LMTP|F_BACKUP; |
416 |
|
|
|
417 |
|
|
memset(buf, 0, sizeof buf); |
418 |
|
|
switch (relay->flags & mask) { |
419 |
|
|
case F_SMTPS|F_STARTTLS|F_AUTH: |
420 |
|
|
(void)strlcat(buf, "secure+auth://", sizeof buf); |
421 |
|
|
break; |
422 |
|
|
case F_SMTPS|F_STARTTLS: |
423 |
|
|
(void)strlcat(buf, "secure://", sizeof buf); |
424 |
|
|
break; |
425 |
|
|
case F_STARTTLS|F_AUTH: |
426 |
|
|
(void)strlcat(buf, "tls+auth://", sizeof buf); |
427 |
|
|
break; |
428 |
|
|
case F_SMTPS|F_AUTH: |
429 |
|
|
(void)strlcat(buf, "smtps+auth://", sizeof buf); |
430 |
|
|
break; |
431 |
|
|
case F_STARTTLS: |
432 |
|
|
(void)strlcat(buf, "tls://", sizeof buf); |
433 |
|
|
break; |
434 |
|
|
case F_SMTPS: |
435 |
|
|
(void)strlcat(buf, "smtps://", sizeof buf); |
436 |
|
|
break; |
437 |
|
|
case F_BACKUP|F_STARTTLS: |
438 |
|
|
(void)strlcat(buf, "tls+backup://", sizeof buf); |
439 |
|
|
break; |
440 |
|
|
case F_BACKUP: |
441 |
|
|
(void)strlcat(buf, "backup://", sizeof buf); |
442 |
|
|
break; |
443 |
|
|
case F_TLS_OPTIONAL: |
444 |
|
|
(void)strlcat(buf, "smtp+tls://", sizeof buf); |
445 |
|
|
break; |
446 |
|
|
case F_LMTP: |
447 |
|
|
(void)strlcat(buf, "lmtp://", sizeof buf); |
448 |
|
|
break; |
449 |
|
|
default: |
450 |
|
|
(void)strlcat(buf, "smtp://", sizeof buf); |
451 |
|
|
break; |
452 |
|
|
} |
453 |
|
|
if (relay->authlabel[0]) { |
454 |
|
|
(void)strlcat(buf, relay->authlabel, sizeof buf); |
455 |
|
|
(void)strlcat(buf, "@", sizeof buf); |
456 |
|
|
} |
457 |
|
|
(void)strlcat(buf, relay->hostname, sizeof buf); |
458 |
|
|
if (relay->port) { |
459 |
|
|
(void)strlcat(buf, ":", sizeof buf); |
460 |
|
|
(void)snprintf(port, sizeof port, "%d", relay->port); |
461 |
|
|
(void)strlcat(buf, port, sizeof buf); |
462 |
|
|
} |
463 |
|
|
return buf; |
464 |
|
|
} |
465 |
|
|
|
466 |
|
|
uint64_t |
467 |
|
|
text_to_evpid(const char *s) |
468 |
|
|
{ |
469 |
|
|
uint64_t ulval; |
470 |
|
|
char *ep; |
471 |
|
|
|
472 |
|
|
errno = 0; |
473 |
|
|
ulval = strtoull(s, &ep, 16); |
474 |
|
|
if (s[0] == '\0' || *ep != '\0') |
475 |
|
|
return 0; |
476 |
|
|
if (errno == ERANGE && ulval == ULLONG_MAX) |
477 |
|
|
return 0; |
478 |
|
|
if (ulval == 0) |
479 |
|
|
return 0; |
480 |
|
|
return (ulval); |
481 |
|
|
} |
482 |
|
|
|
483 |
|
|
uint32_t |
484 |
|
|
text_to_msgid(const char *s) |
485 |
|
|
{ |
486 |
|
|
uint64_t ulval; |
487 |
|
|
char *ep; |
488 |
|
|
|
489 |
|
|
errno = 0; |
490 |
|
|
ulval = strtoull(s, &ep, 16); |
491 |
|
|
if (s[0] == '\0' || *ep != '\0') |
492 |
|
|
return 0; |
493 |
|
|
if (errno == ERANGE && ulval == ULLONG_MAX) |
494 |
|
|
return 0; |
495 |
|
|
if (ulval == 0) |
496 |
|
|
return 0; |
497 |
|
|
if (ulval > 0xffffffff) |
498 |
|
|
return 0; |
499 |
|
|
return (ulval & 0xffffffff); |
500 |
|
|
} |
501 |
|
|
|
502 |
|
|
const char * |
503 |
|
|
rule_to_text(struct rule *r) |
504 |
|
|
{ |
505 |
|
|
static char buf[4096]; |
506 |
|
|
|
507 |
|
|
memset(buf, 0, sizeof buf); |
508 |
|
|
(void)strlcpy(buf, r->r_decision == R_ACCEPT ? "accept" : "reject", sizeof buf); |
509 |
|
|
if (r->r_tag[0]) { |
510 |
|
|
(void)strlcat(buf, " tagged ", sizeof buf); |
511 |
|
|
if (r->r_nottag) |
512 |
|
|
(void)strlcat(buf, "! ", sizeof buf); |
513 |
|
|
(void)strlcat(buf, r->r_tag, sizeof buf); |
514 |
|
|
} |
515 |
|
|
(void)strlcat(buf, " from ", sizeof buf); |
516 |
|
|
if (r->r_notsources) |
517 |
|
|
(void)strlcat(buf, "! ", sizeof buf); |
518 |
|
|
(void)strlcat(buf, r->r_sources->t_name, sizeof buf); |
519 |
|
|
|
520 |
|
|
(void)strlcat(buf, " for ", sizeof buf); |
521 |
|
|
if (r->r_notdestination) |
522 |
|
|
(void)strlcat(buf, "! ", sizeof buf); |
523 |
|
|
switch (r->r_desttype) { |
524 |
|
|
case DEST_DOM: |
525 |
|
|
if (r->r_destination == NULL) { |
526 |
|
|
(void)strlcat(buf, " any", sizeof buf); |
527 |
|
|
break; |
528 |
|
|
} |
529 |
|
|
(void)strlcat(buf, " domain ", sizeof buf); |
530 |
|
|
(void)strlcat(buf, r->r_destination->t_name, sizeof buf); |
531 |
|
|
if (r->r_mapping) { |
532 |
|
|
(void)strlcat(buf, " alias ", sizeof buf); |
533 |
|
|
(void)strlcat(buf, r->r_mapping->t_name, sizeof buf); |
534 |
|
|
} |
535 |
|
|
break; |
536 |
|
|
case DEST_VDOM: |
537 |
|
|
if (r->r_destination == NULL) { |
538 |
|
|
(void)strlcat(buf, " any virtual ", sizeof buf); |
539 |
|
|
(void)strlcat(buf, r->r_mapping->t_name, sizeof buf); |
540 |
|
|
break; |
541 |
|
|
} |
542 |
|
|
(void)strlcat(buf, " domain ", sizeof buf); |
543 |
|
|
(void)strlcat(buf, r->r_destination->t_name, sizeof buf); |
544 |
|
|
(void)strlcat(buf, " virtual ", sizeof buf); |
545 |
|
|
(void)strlcat(buf, r->r_mapping->t_name, sizeof buf); |
546 |
|
|
break; |
547 |
|
|
} |
548 |
|
|
|
549 |
|
|
switch (r->r_action) { |
550 |
|
|
case A_RELAY: |
551 |
|
|
(void)strlcat(buf, " relay", sizeof buf); |
552 |
|
|
break; |
553 |
|
|
case A_RELAYVIA: |
554 |
|
|
(void)strlcat(buf, " relay via ", sizeof buf); |
555 |
|
|
(void)strlcat(buf, relayhost_to_text(&r->r_value.relayhost), sizeof buf); |
556 |
|
|
break; |
557 |
|
|
case A_MAILDIR: |
558 |
|
|
(void)strlcat(buf, " deliver to maildir \"", sizeof buf); |
559 |
|
|
(void)strlcat(buf, r->r_value.buffer, sizeof buf); |
560 |
|
|
(void)strlcat(buf, "\"", sizeof buf); |
561 |
|
|
break; |
562 |
|
|
case A_MBOX: |
563 |
|
|
(void)strlcat(buf, " deliver to mbox", sizeof buf); |
564 |
|
|
break; |
565 |
|
|
case A_FILENAME: |
566 |
|
|
(void)strlcat(buf, " deliver to filename \"", sizeof buf); |
567 |
|
|
(void)strlcat(buf, r->r_value.buffer, sizeof buf); |
568 |
|
|
(void)strlcat(buf, "\"", sizeof buf); |
569 |
|
|
break; |
570 |
|
|
case A_MDA: |
571 |
|
|
(void)strlcat(buf, " deliver to mda \"", sizeof buf); |
572 |
|
|
(void)strlcat(buf, r->r_value.buffer, sizeof buf); |
573 |
|
|
(void)strlcat(buf, "\"", sizeof buf); |
574 |
|
|
break; |
575 |
|
|
case A_LMTP: |
576 |
|
|
(void)strlcat(buf, " deliver to lmtp \"", sizeof buf); |
577 |
|
|
(void)strlcat(buf, r->r_value.buffer, sizeof buf); |
578 |
|
|
(void)strlcat(buf, "\"", sizeof buf); |
579 |
|
|
break; |
580 |
|
|
case A_NONE: |
581 |
|
|
break; |
582 |
|
|
} |
583 |
|
|
|
584 |
|
|
return buf; |
585 |
|
|
} |
586 |
|
|
|
587 |
|
|
int |
588 |
|
|
text_to_userinfo(struct userinfo *userinfo, const char *s) |
589 |
|
|
{ |
590 |
|
|
char buf[PATH_MAX]; |
591 |
|
|
char *p; |
592 |
|
|
const char *errstr; |
593 |
|
|
|
594 |
|
|
memset(buf, 0, sizeof buf); |
595 |
|
|
p = buf; |
596 |
|
|
while (*s && *s != ':') |
597 |
|
|
*p++ = *s++; |
598 |
|
|
if (*s++ != ':') |
599 |
|
|
goto error; |
600 |
|
|
|
601 |
|
|
if (strlcpy(userinfo->username, buf, |
602 |
|
|
sizeof userinfo->username) >= sizeof userinfo->username) |
603 |
|
|
goto error; |
604 |
|
|
|
605 |
|
|
memset(buf, 0, sizeof buf); |
606 |
|
|
p = buf; |
607 |
|
|
while (*s && *s != ':') |
608 |
|
|
*p++ = *s++; |
609 |
|
|
if (*s++ != ':') |
610 |
|
|
goto error; |
611 |
|
|
userinfo->uid = strtonum(buf, 0, UID_MAX, &errstr); |
612 |
|
|
if (errstr) |
613 |
|
|
goto error; |
614 |
|
|
|
615 |
|
|
memset(buf, 0, sizeof buf); |
616 |
|
|
p = buf; |
617 |
|
|
while (*s && *s != ':') |
618 |
|
|
*p++ = *s++; |
619 |
|
|
if (*s++ != ':') |
620 |
|
|
goto error; |
621 |
|
|
userinfo->gid = strtonum(buf, 0, GID_MAX, &errstr); |
622 |
|
|
if (errstr) |
623 |
|
|
goto error; |
624 |
|
|
|
625 |
|
|
if (strlcpy(userinfo->directory, s, |
626 |
|
|
sizeof userinfo->directory) >= sizeof userinfo->directory) |
627 |
|
|
goto error; |
628 |
|
|
|
629 |
|
|
return 1; |
630 |
|
|
|
631 |
|
|
error: |
632 |
|
|
return 0; |
633 |
|
|
} |
634 |
|
|
|
635 |
|
|
int |
636 |
|
|
text_to_credentials(struct credentials *creds, const char *s) |
637 |
|
|
{ |
638 |
|
|
char *p; |
639 |
|
|
char buffer[LINE_MAX]; |
640 |
|
|
size_t offset; |
641 |
|
|
|
642 |
|
|
p = strchr(s, ':'); |
643 |
|
|
if (p == NULL) { |
644 |
|
|
creds->username[0] = '\0'; |
645 |
|
|
if (strlcpy(creds->password, s, sizeof creds->password) |
646 |
|
|
>= sizeof creds->password) |
647 |
|
|
return 0; |
648 |
|
|
return 1; |
649 |
|
|
} |
650 |
|
|
|
651 |
|
|
offset = p - s; |
652 |
|
|
|
653 |
|
|
memset(buffer, 0, sizeof buffer); |
654 |
|
|
if (strlcpy(buffer, s, sizeof buffer) >= sizeof buffer) |
655 |
|
|
return 0; |
656 |
|
|
p = buffer + offset; |
657 |
|
|
*p = '\0'; |
658 |
|
|
|
659 |
|
|
if (strlcpy(creds->username, buffer, sizeof creds->username) |
660 |
|
|
>= sizeof creds->username) |
661 |
|
|
return 0; |
662 |
|
|
if (strlcpy(creds->password, p+1, sizeof creds->password) |
663 |
|
|
>= sizeof creds->password) |
664 |
|
|
return 0; |
665 |
|
|
|
666 |
|
|
return 1; |
667 |
|
|
} |
668 |
|
|
|
669 |
|
|
int |
670 |
|
|
text_to_expandnode(struct expandnode *expandnode, const char *s) |
671 |
|
|
{ |
672 |
|
|
size_t l; |
673 |
|
|
|
674 |
|
|
l = strlen(s); |
675 |
|
|
if (alias_is_error(expandnode, s, l) || |
676 |
|
|
alias_is_include(expandnode, s, l) || |
677 |
|
|
alias_is_filter(expandnode, s, l) || |
678 |
|
|
alias_is_filename(expandnode, s, l) || |
679 |
|
|
alias_is_address(expandnode, s, l) || |
680 |
|
|
alias_is_maildir(expandnode, s, l) || |
681 |
|
|
alias_is_username(expandnode, s, l)) |
682 |
|
|
return (1); |
683 |
|
|
|
684 |
|
|
return (0); |
685 |
|
|
} |
686 |
|
|
|
687 |
|
|
const char * |
688 |
|
|
expandnode_to_text(struct expandnode *expandnode) |
689 |
|
|
{ |
690 |
|
|
switch (expandnode->type) { |
691 |
|
|
case EXPAND_FILTER: |
692 |
|
|
case EXPAND_FILENAME: |
693 |
|
|
case EXPAND_INCLUDE: |
694 |
|
|
case EXPAND_ERROR: |
695 |
|
|
case EXPAND_MAILDIR: |
696 |
|
|
return expandnode->u.buffer; |
697 |
|
|
case EXPAND_USERNAME: |
698 |
|
|
return expandnode->u.user; |
699 |
|
|
case EXPAND_ADDRESS: |
700 |
|
|
return mailaddr_to_text(&expandnode->u.mailaddr); |
701 |
|
|
case EXPAND_INVALID: |
702 |
|
|
break; |
703 |
|
|
} |
704 |
|
|
|
705 |
|
|
return NULL; |
706 |
|
|
} |
707 |
|
|
|
708 |
|
|
static int |
709 |
|
|
alias_is_maildir(struct expandnode *alias, const char *line, size_t len) |
710 |
|
|
{ |
711 |
|
|
if (strncasecmp("maildir:", line, 8) != 0) |
712 |
|
|
return (0); |
713 |
|
|
|
714 |
|
|
line += 8; |
715 |
|
|
memset(alias, 0, sizeof *alias); |
716 |
|
|
alias->type = EXPAND_MAILDIR; |
717 |
|
|
if (strlcpy(alias->u.buffer, line, |
718 |
|
|
sizeof(alias->u.buffer)) >= sizeof(alias->u.buffer)) |
719 |
|
|
return (0); |
720 |
|
|
|
721 |
|
|
return (1); |
722 |
|
|
} |
723 |
|
|
|
724 |
|
|
/******/ |
725 |
|
|
static int |
726 |
|
|
alias_is_filter(struct expandnode *alias, const char *line, size_t len) |
727 |
|
|
{ |
728 |
|
|
int v = 0; |
729 |
|
|
|
730 |
|
|
if (*line == '"') |
731 |
|
|
v = 1; |
732 |
|
|
if (*(line+v) == '|') { |
733 |
|
|
if (strlcpy(alias->u.buffer, line + v + 1, |
734 |
|
|
sizeof(alias->u.buffer)) >= sizeof(alias->u.buffer)) |
735 |
|
|
return 0; |
736 |
|
|
if (v) { |
737 |
|
|
v = strlen(alias->u.buffer); |
738 |
|
|
if (v == 0) |
739 |
|
|
return (0); |
740 |
|
|
if (alias->u.buffer[v-1] != '"') |
741 |
|
|
return (0); |
742 |
|
|
alias->u.buffer[v-1] = '\0'; |
743 |
|
|
} |
744 |
|
|
alias->type = EXPAND_FILTER; |
745 |
|
|
return (1); |
746 |
|
|
} |
747 |
|
|
return (0); |
748 |
|
|
} |
749 |
|
|
|
750 |
|
|
static int |
751 |
|
|
alias_is_username(struct expandnode *alias, const char *line, size_t len) |
752 |
|
|
{ |
753 |
|
|
memset(alias, 0, sizeof *alias); |
754 |
|
|
|
755 |
|
|
if (strlcpy(alias->u.user, line, |
756 |
|
|
sizeof(alias->u.user)) >= sizeof(alias->u.user)) |
757 |
|
|
return 0; |
758 |
|
|
|
759 |
|
|
while (*line) { |
760 |
|
|
if (!isalnum((unsigned char)*line) && |
761 |
|
|
*line != '_' && *line != '.' && *line != '-' && *line != '+') |
762 |
|
|
return 0; |
763 |
|
|
++line; |
764 |
|
|
} |
765 |
|
|
|
766 |
|
|
alias->type = EXPAND_USERNAME; |
767 |
|
|
return 1; |
768 |
|
|
} |
769 |
|
|
|
770 |
|
|
static int |
771 |
|
|
alias_is_address(struct expandnode *alias, const char *line, size_t len) |
772 |
|
|
{ |
773 |
|
|
char *domain; |
774 |
|
|
|
775 |
|
|
memset(alias, 0, sizeof *alias); |
776 |
|
|
|
777 |
|
|
if (len < 3) /* x@y */ |
778 |
|
|
return 0; |
779 |
|
|
|
780 |
|
|
domain = strchr(line, '@'); |
781 |
|
|
if (domain == NULL) |
782 |
|
|
return 0; |
783 |
|
|
|
784 |
|
|
/* @ cannot start or end an address */ |
785 |
|
|
if (domain == line || domain == line + len - 1) |
786 |
|
|
return 0; |
787 |
|
|
|
788 |
|
|
/* scan pre @ for disallowed chars */ |
789 |
|
|
*domain++ = '\0'; |
790 |
|
|
(void)strlcpy(alias->u.mailaddr.user, line, sizeof(alias->u.mailaddr.user)); |
791 |
|
|
(void)strlcpy(alias->u.mailaddr.domain, domain, |
792 |
|
|
sizeof(alias->u.mailaddr.domain)); |
793 |
|
|
|
794 |
|
|
while (*line) { |
795 |
|
|
char allowedset[] = "!#$%*/?|^{}`~&'+-=_."; |
796 |
|
|
if (!isalnum((unsigned char)*line) && |
797 |
|
|
strchr(allowedset, *line) == NULL) |
798 |
|
|
return 0; |
799 |
|
|
++line; |
800 |
|
|
} |
801 |
|
|
|
802 |
|
|
while (*domain) { |
803 |
|
|
char allowedset[] = "-."; |
804 |
|
|
if (!isalnum((unsigned char)*domain) && |
805 |
|
|
strchr(allowedset, *domain) == NULL) |
806 |
|
|
return 0; |
807 |
|
|
++domain; |
808 |
|
|
} |
809 |
|
|
|
810 |
|
|
alias->type = EXPAND_ADDRESS; |
811 |
|
|
return 1; |
812 |
|
|
} |
813 |
|
|
|
814 |
|
|
static int |
815 |
|
|
alias_is_filename(struct expandnode *alias, const char *line, size_t len) |
816 |
|
|
{ |
817 |
|
|
memset(alias, 0, sizeof *alias); |
818 |
|
|
|
819 |
|
|
if (*line != '/') |
820 |
|
|
return 0; |
821 |
|
|
|
822 |
|
|
if (strlcpy(alias->u.buffer, line, |
823 |
|
|
sizeof(alias->u.buffer)) >= sizeof(alias->u.buffer)) |
824 |
|
|
return 0; |
825 |
|
|
alias->type = EXPAND_FILENAME; |
826 |
|
|
return 1; |
827 |
|
|
} |
828 |
|
|
|
829 |
|
|
static int |
830 |
|
|
alias_is_include(struct expandnode *alias, const char *line, size_t len) |
831 |
|
|
{ |
832 |
|
|
size_t skip; |
833 |
|
|
|
834 |
|
|
memset(alias, 0, sizeof *alias); |
835 |
|
|
|
836 |
|
|
if (strncasecmp(":include:", line, 9) == 0) |
837 |
|
|
skip = 9; |
838 |
|
|
else if (strncasecmp("include:", line, 8) == 0) |
839 |
|
|
skip = 8; |
840 |
|
|
else |
841 |
|
|
return 0; |
842 |
|
|
|
843 |
|
|
if (!alias_is_filename(alias, line + skip, len - skip)) |
844 |
|
|
return 0; |
845 |
|
|
|
846 |
|
|
alias->type = EXPAND_INCLUDE; |
847 |
|
|
return 1; |
848 |
|
|
} |
849 |
|
|
|
850 |
|
|
static int |
851 |
|
|
alias_is_error(struct expandnode *alias, const char *line, size_t len) |
852 |
|
|
{ |
853 |
|
|
size_t skip; |
854 |
|
|
|
855 |
|
|
memset(alias, 0, sizeof *alias); |
856 |
|
|
|
857 |
|
|
if (strncasecmp(":error:", line, 7) == 0) |
858 |
|
|
skip = 7; |
859 |
|
|
else if (strncasecmp("error:", line, 6) == 0) |
860 |
|
|
skip = 6; |
861 |
|
|
else |
862 |
|
|
return 0; |
863 |
|
|
|
864 |
|
|
if (strlcpy(alias->u.buffer, line + skip, |
865 |
|
|
sizeof(alias->u.buffer)) >= sizeof(alias->u.buffer)) |
866 |
|
|
return 0; |
867 |
|
|
|
868 |
|
|
if (strlen(alias->u.buffer) < 5) |
869 |
|
|
return 0; |
870 |
|
|
|
871 |
|
|
/* [45][0-9]{2} [a-zA-Z0-9].* */ |
872 |
|
|
if (alias->u.buffer[3] != ' ' || |
873 |
|
|
!isalnum((unsigned char)alias->u.buffer[4]) || |
874 |
|
|
(alias->u.buffer[0] != '4' && alias->u.buffer[0] != '5') || |
875 |
|
|
!isdigit((unsigned char)alias->u.buffer[1]) || |
876 |
|
|
!isdigit((unsigned char)alias->u.buffer[2])) |
877 |
|
|
return 0; |
878 |
|
|
|
879 |
|
|
alias->type = EXPAND_ERROR; |
880 |
|
|
return 1; |
881 |
|
|
} |