Date: Mon, 17 Dec 2018 10:42:21 +0000 (UTC) From: "Andrey V. Elsukov" <ae@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r342163 - stable/12/sbin/ipfw Message-ID: <201812171042.wBHAgLqS070930@repo.freebsd.org>
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Author: ae Date: Mon Dec 17 10:42:20 2018 New Revision: 342163 URL: https://svnweb.freebsd.org/changeset/base/342163 Log: MFC r341798: Use correct size for IPv4 address in gethostbyaddr(). When u_long is 8 bytes, it returns EINVAL and 'ipfw -N show' doesn't work. Reported by: Claudio Eichenberger <cei at yourshop.com> MFC r341799: Rework how protocol number is tracked in rule. Save it when O_PROTO opcode will be printed. This should solve the problem, when protocol name is not printed in `ipfw -N show`. Reported by: Claudio Eichenberger <cei at yourshop.com> Modified: stable/12/sbin/ipfw/ipfw2.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sbin/ipfw/ipfw2.c ============================================================================== --- stable/12/sbin/ipfw/ipfw2.c Mon Dec 17 10:17:56 2018 (r342162) +++ stable/12/sbin/ipfw/ipfw2.c Mon Dec 17 10:42:20 2018 (r342163) @@ -1256,7 +1256,8 @@ print_ip(struct buf_pr *bp, const struct format_opts * (cmd->o.opcode == O_IP_SRC || cmd->o.opcode == O_IP_DST) ? 32 : contigmask((uint8_t *)&(a[1]), 32); if (mb == 32 && co.do_resolv) - he = gethostbyaddr((char *)&(a[0]), sizeof(u_long), AF_INET); + he = gethostbyaddr((char *)&(a[0]), sizeof(in_addr_t), + AF_INET); if (he != NULL) /* resolved to name */ bprintf(bp, "%s", he->h_name); else if (mb == 0) /* any */ @@ -1510,6 +1511,7 @@ print_instruction(struct buf_pr *bp, const struct form bprintf(bp, " %s", pe->p_name); else bprintf(bp, " %u", cmd->arg1); + state->proto = cmd->arg1; break; case O_MACADDR2: print_mac(bp, insntod(cmd, mac)); @@ -1991,10 +1993,10 @@ print_proto(struct buf_pr *bp, struct format_opts *fo, struct show_state *state) { ipfw_insn *cmd; - int l, proto, ip4, ip6, tmp; + int l, proto, ip4, ip6; /* Count all O_PROTO, O_IP4, O_IP6 instructions. */ - proto = tmp = ip4 = ip6 = 0; + proto = ip4 = ip6 = 0; for (l = state->rule->act_ofs, cmd = state->rule->cmd; l > 0; l -= F_LEN(cmd), cmd += F_LEN(cmd)) { switch (cmd->opcode) { @@ -2030,18 +2032,13 @@ print_proto(struct buf_pr *bp, struct format_opts *fo, if (cmd == NULL || (cmd->len & F_OR)) for (l = proto; l > 0; l--) { cmd = print_opcode(bp, fo, state, O_PROTO); - if (cmd != NULL && (cmd->len & F_OR) == 0) + if (cmd == NULL || (cmd->len & F_OR) == 0) break; - tmp = cmd->arg1; } /* Initialize proto, it is used by print_newports() */ - if (tmp != 0) - state->proto = tmp; - else if (ip6 != 0) - state->proto = IPPROTO_IPV6; - else - state->proto = IPPROTO_IP; state->flags |= HAVE_PROTO; + if (state->proto == 0 && ip6 != 0) + state->proto = IPPROTO_IPV6; } static int
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