From owner-svn-src-head@freebsd.org Tue Sep 3 14:06:14 2019 Return-Path: Delivered-To: svn-src-head@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id E4540DC3BF; Tue, 3 Sep 2019 14:06:07 +0000 (UTC) (envelope-from yuripv@freebsd.org) Received: from freefall.freebsd.org (freefall.freebsd.org [96.47.72.132]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "freefall.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46N7z346pkz4PDG; Tue, 3 Sep 2019 14:06:07 +0000 (UTC) (envelope-from yuripv@freebsd.org) Received: by freefall.freebsd.org (Postfix, from userid 1452) id A24A71A181; Tue, 3 Sep 2019 14:05:58 +0000 (UTC) X-Original-To: yuripv@localmail.freebsd.org Delivered-To: yuripv@localmail.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [96.47.72.80]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client CN "mx1.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by freefall.freebsd.org (Postfix) with ESMTPS id ED95D1BC6B; Wed, 3 Apr 2019 12:47:53 +0000 (UTC) (envelope-from owner-src-committers@freebsd.org) Received: from freefall.freebsd.org (freefall.freebsd.org [96.47.72.132]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "freefall.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 36D7A778FA; Wed, 3 Apr 2019 12:47:53 +0000 (UTC) (envelope-from owner-src-committers@freebsd.org) Received: by freefall.freebsd.org (Postfix, from userid 538) id 1A3001BBF9; Wed, 3 Apr 2019 12:47:53 +0000 (UTC) Delivered-To: src-committers@localmail.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client CN "mx1.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by freefall.freebsd.org (Postfix) with ESMTPS id 384081BBF4 for ; Wed, 3 Apr 2019 12:47:50 +0000 (UTC) (envelope-from ae@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id DC544778F5; Wed, 3 Apr 2019 12:47:49 +0000 (UTC) (envelope-from ae@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id B8B97E15D; Wed, 3 Apr 2019 12:47:49 +0000 (UTC) (envelope-from ae@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x33ClnAI021098; Wed, 3 Apr 2019 12:47:49 GMT (envelope-from ae@FreeBSD.org) Received: (from ae@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x33ClnkS021097; Wed, 3 Apr 2019 12:47:49 GMT (envelope-from ae@FreeBSD.org) Message-Id: <201904031247.x33ClnkS021097@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: ae set sender to ae@FreeBSD.org using -f From: "Andrey V. Elsukov" To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r345843 - head/contrib/bsnmp/lib X-SVN-Group: head X-SVN-Commit-Author: ae X-SVN-Commit-Paths: head/contrib/bsnmp/lib X-SVN-Commit-Revision: 345843 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk X-Loop: FreeBSD.org Sender: owner-src-committers@freebsd.org X-Rspamd-Queue-Id: 36D7A778FA X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.96 / 15.00]; local_wl_from(0.00)[freebsd.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.96)[-0.957,0]; ASN(0.00)[asn:11403, ipnet:96.47.64.0/20, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] Status: O X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Date: Tue, 03 Sep 2019 14:06:14 -0000 X-Original-Date: Wed, 3 Apr 2019 12:47:49 +0000 (UTC) X-List-Received-Date: Tue, 03 Sep 2019 14:06:14 -0000 Author: ae Date: Wed Apr 3 12:47:49 2019 New Revision: 345843 URL: https://svnweb.freebsd.org/changeset/base/345843 Log: Follow the declared behaviour that specifies server string format in bsnmpclient(3). snmp_parse_server() function accepts string where some fields can be omitted: [trans::][community@][server][:port] "trans" field can be "udp", "udp6", "dgram" and "stream". "community" can be empty string, if it is omitted, the default value will be used. For read_community it is "public", for write_comminity it is "private". "server" field can be hostname, IPv4 address or IPv6 address. IPv6 address should be specified in brackets "[]". If port is omitted, the default value "snmp" will be used for "udp" and "udp6" transports. So, now for bsnmpget(1) and bsnmwalk(1) it is not required to specify all fields in argument of '-s' option. E.g. # bsnmpget -s 127.1 sysName.0 # bsnmpget -s "udp::127.1" sysName.0 # bsnmpget -s "udp::public@127.1" sysName.0 # bsnmpget -s "udp::public@127.1:161" sysName.0 # bsnmpget -s "udp::[::1]" sysName.0 # bsnmpget -s "udp6::[::1]" sysName.0 # bsnmpget -s "[fe80::1%lo0]" sysName.0 PR: 236664 Reported by: olivier MFC after: 1 month Modified: head/contrib/bsnmp/lib/snmpclient.c Modified: head/contrib/bsnmp/lib/snmpclient.c ============================================================================== --- head/contrib/bsnmp/lib/snmpclient.c Wed Apr 3 08:22:58 2019 (r345842) +++ head/contrib/bsnmp/lib/snmpclient.c Wed Apr 3 12:47:49 2019 (r345843) @@ -1874,38 +1874,47 @@ snmp_client_set_port(struct snmp_client *cl, const cha return (0); } +static const char *const trans_list[] = { + [SNMP_TRANS_UDP] = "udp::", + [SNMP_TRANS_LOC_DGRAM] = "dgram::", + [SNMP_TRANS_LOC_STREAM] = "stream::", + [SNMP_TRANS_UDP6] = "udp6::", +}; + /** * Try to get a transport identifier which is a leading alphanumeric string - * (starting with '_' or a letter and including also '_') terminated by - * a double colon. The string may not be empty. The transport identifier - * is optional. + * terminated by a double colon. The string may not be empty. The transport + * identifier is optional. * * \param sc client struct to set errors * \param strp possible start of transport; updated to point to * the next character to parse * - * \return end of transport; equals *strp if there is none; NULL if there - * was an error + * \return transport identifier */ -static inline const char * +static inline int get_transp(struct snmp_client *sc, const char **strp) { - const char *p = *strp; + const char *p; + size_t i; - if (isascii(*p) && (isalpha(*p) || *p == '_')) { - p++; - while (isascii(*p) && (isalnum(*p) || *p == '_')) - p++; - if (p[0] == ':' && p[1] == ':') { - *strp = p + 2; - return (p); + for (i = 0; i < nitems(trans_list); i++) { + if (trans_list[i] == NULL || *trans_list[i] == '\0') + continue; + p = strstr(*strp, trans_list[i]); + if (p == *strp) { + *strp += strlen(trans_list[i]); + return ((int)i); } } + + p = *strp; if (p[0] == ':' && p[1] == ':') { seterr(sc, "empty transport specifier"); - return (NULL); + return (-1); } - return (*strp); + /* by default assume UDP */ + return (SNMP_TRANS_UDP); } /** @@ -2143,24 +2152,13 @@ save_str(struct snmp_client *sc, const char *const s[2 int snmp_parse_server(struct snmp_client *sc, const char *str) { -#if DEBUG_PARSE const char *const orig = str; -#endif - - const char *const trans_list[] = { - [SNMP_TRANS_UDP] = "udp", - [SNMP_TRANS_LOC_DGRAM] = "dgram", - [SNMP_TRANS_LOC_STREAM] = "stream", - [SNMP_TRANS_UDP6] = "udp6", - }; - /* parse input */ - const char *const transp[2] = { - str, - get_transp(sc, &str), - }; - if (transp[1] == NULL) + int i, trans = get_transp(sc, &str); + if (trans < 0) return (-1); + /* choose automatically */ + i = orig == str ? -1: trans; const char *const comm[2] = { str, @@ -2206,7 +2204,7 @@ snmp_parse_server(struct snmp_client *sc, const char * } #if DEBUG_PARSE - printf("transp: %zu %zu\n", transp[0] - orig, transp[1] - orig); + printf("transp: %u\n", trans); printf("comm: %zu %zu\n", comm[0] - orig, comm[1] - orig); printf("ipv6: %zu %zu\n", ipv6[0] - orig, ipv6[1] - orig); printf("ipv4: %zu %zu\n", ipv4[0] - orig, ipv4[1] - orig); @@ -2215,69 +2213,73 @@ snmp_parse_server(struct snmp_client *sc, const char * #endif /* analyse and allocate */ - int i = -1; - if (transp[0] != transp[1]) { - for (i = 0; i < (int)nitems(trans_list); i++) { - if (trans_list[i] != NULL && - strlen(trans_list[i]) == (size_t)(transp[1] - - transp[0]) && !strncmp(trans_list[i], transp[0], - transp[1] - transp[0])) - break; - } - - if (i == (int)nitems(trans_list)) { - seterr(sc, "unknown transport specifier '%.*s'", - transp[1] - transp[0], transp[0]); - return (-1); - } - } - char *chost; if (ipv6[0] != ipv6[1]) { if ((chost = save_str(sc, ipv6)) == NULL) return (-1); - if (i == -1) - i = SNMP_TRANS_UDP6; + if (i == -1 || trans == SNMP_TRANS_UDP) + trans = SNMP_TRANS_UDP6; } else if (ipv4[0] != ipv4[1]) { if ((chost = save_str(sc, ipv4)) == NULL) return (-1); if (i == -1) - i = SNMP_TRANS_UDP; + trans = SNMP_TRANS_UDP; } else { if ((chost = save_str(sc, host)) == NULL) return (-1); if (i == -1) { - /* Default transport is UDP unless the host contains - * a slash in which case we default to DGRAM. */ - i = SNMP_TRANS_UDP; + /* + * Default transport is UDP unless the host contains + * a slash in which case we default to DGRAM. + */ for (const char *p = host[0]; p < host[1]; p++) if (*p == '/') { - i = SNMP_TRANS_LOC_DGRAM; + trans = SNMP_TRANS_LOC_DGRAM; break; } } } - char *cport = save_str(sc, port); + char *cport; + + if (port[0] == port[1] && ( + trans == SNMP_TRANS_UDP || trans == SNMP_TRANS_UDP6)) { + /* If port was not specified, use "snmp" name by default */ + cport = strdup("snmp"); + } else + cport = save_str(sc, port); + if (cport == NULL) { free(chost); return (-1); } /* commit */ - sc->trans = i; + sc->trans = trans; + /* + * If community string was specified and it is empty, overwrite it. + * If it was not specified, use default. + */ + if (comm[0] != comm[1] || strrchr(comm[0], '@') != NULL) { + strncpy(sc->read_community, comm[0], comm[1] - comm[0]); + sc->read_community[comm[1] - comm[0]] = '\0'; + strncpy(sc->write_community, comm[0], comm[1] - comm[0]); + sc->write_community[comm[1] - comm[0]] = '\0'; + } - strncpy(sc->read_community, comm[0], comm[1] - comm[0]); - sc->read_community[comm[1] - comm[0]] = '\0'; - strncpy(sc->write_community, comm[0], comm[1] - comm[0]); - sc->write_community[comm[1] - comm[0]] = '\0'; - free(sc->chost); sc->chost = chost; free(sc->cport); sc->cport = cport; +#if DEBUG_PARSE + printf("Committed values:\n"); + printf("trans: %u\n", sc->trans); + printf("comm: '%s'/'%s'\n", sc->read_community, sc->write_community); + printf("host: '%s'\n", sc->chost); + printf("port: '%s'\n", sc->cport); +#endif return (0); }