From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.org/gmane.linux.lib.musl.general/2155 Path: news.gmane.org!not-for-mail From: Abdoulaye Walsimou Gaye Newsgroups: gmane.linux.lib.musl.general Subject: [PATCH 3/4] Import BSD functions defined in from NetBSD Date: Sat, 20 Oct 2012 22:15:44 +0200 Message-ID: <1350764145-10305-4-git-send-email-awg@embtoolkit.org> References: <1350764145-10305-1-git-send-email-awg@embtoolkit.org> Reply-To: musl@lists.openwall.com NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1350764171 25648 80.91.229.3 (20 Oct 2012 20:16:11 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 20 Oct 2012 20:16:11 +0000 (UTC) Cc: Abdoulaye Walsimou Gaye To: musl@lists.openwall.com Original-X-From: musl-return-2156-gllmg-musl=m.gmane.org@lists.openwall.com Sat Oct 20 22:16:18 2012 Return-path: Envelope-to: gllmg-musl@plane.gmane.org Original-Received: from mother.openwall.net ([195.42.179.200]) by plane.gmane.org with smtp (Exim 4.69) (envelope-from ) id 1TPfSz-0004uZ-Kt for gllmg-musl@plane.gmane.org; Sat, 20 Oct 2012 22:16:17 +0200 Original-Received: (qmail 32241 invoked by uid 550); 20 Oct 2012 20:16:06 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: Original-Received: (qmail 32137 invoked from network); 20 Oct 2012 20:16:03 -0000 X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1350764145-10305-1-git-send-email-awg@embtoolkit.org> Xref: news.gmane.org gmane.linux.lib.musl.general:2155 Archived-At: Signed-off-by: Abdoulaye Walsimou Gaye --- include/netinet/ether.h | 14 ++++ src/network/ethers.c | 180 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 194 insertions(+) create mode 100644 include/netinet/ether.h create mode 100644 src/network/ethers.c diff --git a/include/netinet/ether.h b/include/netinet/ether.h new file mode 100644 index 0000000..44c614e --- /dev/null +++ b/include/netinet/ether.h @@ -0,0 +1,14 @@ +#ifndef _NETINET_ETHER_H +#define _NETINET_ETHER_H + +#include + +__BEGIN_DECLS +char *ether_ntoa(const struct ether_addr *); +struct ether_addr *ether_aton(const char *); +int ether_ntohost(char *, const struct ether_addr *); +int ether_hostton(const char *, struct ether_addr *); +int ether_line(const char *, struct ether_addr *, char *); +__END_DECLS + +#endif /* !_NETINET_ETHER_H */ diff --git a/src/network/ethers.c b/src/network/ethers.c new file mode 100644 index 0000000..8014581 --- /dev/null +++ b/src/network/ethers.c @@ -0,0 +1,180 @@ +/* Origin NetBSD: src/lib/libc/net/ethers.c */ + +/* + * ethers(3N) a la Sun. + * + * Written by Roland McGrath 10/14/93. + * Public domain. + * + * port for musl by Abdoulaye Walsimou GAYE 2012/10/15 + */ + +#define _BSD_SOURCE +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#ifndef _PATH_ETHERS +#define _PATH_ETHERS "/etc/ethers" +#endif + +/* + * ether_ntoa(): + * This function converts this structure into an ASCII string of the form + * ``xx:xx:xx:xx:xx:xx'', consisting of 6 hexadecimal numbers separated + * by colons. It returns a pointer to a static buffer that is reused for + * each call. + */ +char *ether_ntoa(const struct ether_addr *e) +{ + static char a[18]; + + assert(e != NULL); + + (void) snprintf(a, sizeof a, "%02x:%02x:%02x:%02x:%02x:%02x", + e->ether_addr_octet[0], e->ether_addr_octet[1], + e->ether_addr_octet[2], e->ether_addr_octet[3], + e->ether_addr_octet[4], e->ether_addr_octet[5]); + return a; +} + +/* + * ether_aton(): + * This function converts an ASCII string of the same form and to a structure + * containing the 6 octets of the address. It returns a pointer to a + * static structure that is reused for each call. + */ +struct ether_addr *ether_aton(const char *s) +{ + static struct ether_addr n; + unsigned int i[6]; + + assert(s != NULL); + + if (sscanf(s, " %x:%x:%x:%x:%x:%x ", &i[0], &i[1], + &i[2], &i[3], &i[4], &i[5]) == 6) { + n.ether_addr_octet[0] = (unsigned char)i[0]; + n.ether_addr_octet[1] = (unsigned char)i[1]; + n.ether_addr_octet[2] = (unsigned char)i[2]; + n.ether_addr_octet[3] = (unsigned char)i[3]; + n.ether_addr_octet[4] = (unsigned char)i[4]; + n.ether_addr_octet[5] = (unsigned char)i[5]; + return &n; + } + return NULL; +} + +/* + * ether_ntohost(): + * This function interrogates the data base mapping host names to Ethernet + * addresses, /etc/ethers. + * It looks up the given Ethernet address and writes the associated host name + * into the character buffer passed. + * It returns zero if it finds the requested host name and -1 if not. + */ +int ether_ntohost(char *hostname, const struct ether_addr *e) +{ + FILE *f; + char *p; + size_t len; + struct ether_addr try; + + assert(hostname != NULL); + assert(e != NULL); + + f = fopen(_PATH_ETHERS, "r"); + if (f == NULL) + return -1; + while ((p = fgetln(f, &len)) != NULL) { + if (p[len - 1] != '\n') + continue; /* skip lines w/o \n */ + p[--len] = '\0'; + if (ether_line(p, &try, hostname) == 0 && + memcmp(&try, e, sizeof try) == 0) { + (void)fclose(f); + return 0; + } + } + (void)fclose(f); + errno = ENOENT; + return -1; +} + +/* + * ether_hostton(): + * This function interrogates the data base mapping host names to Ethernet + * addresses, /etc/ethers. + * It looks up the given host name and writes the associated Ethernet address + * into the structure passed. + * It returns zero if it finds the requested address and -1 if not. + */ +int ether_hostton(const char *hostname, struct ether_addr *e) +{ + FILE *f; + char *p; + size_t len; + char try[MAXHOSTNAMELEN + 1]; + + assert(hostname != NULL); + assert(e != NULL); + + f = fopen(_PATH_ETHERS, "r"); + if (f==NULL) + return -1; + + while ((p = fgetln(f, &len)) != NULL) { + if (p[len - 1] != '\n') + continue; /* skip lines w/o \n */ + p[--len] = '\0'; + if (ether_line(p, e, try) == 0 && strcmp(hostname, try) == 0) { + (void)fclose(f); + return 0; + } + } + (void)fclose(f); + errno = ENOENT; + return -1; +} + +/* + * ether_line(): + * This function parses a line from the /etc/ethers file and fills in the passed + * ``struct ether_addr'' and character buffer with the Ethernet address and host + * name on the line. + * It returns zero if the line was successfully parsed and -1 if not. + */ +int ether_line(const char *l, struct ether_addr *e, char *hostname) +{ + unsigned int i[6]; + +#define S2(arg) #arg +#define S1(arg) S2(arg) + static const char fmt[] = " %x:%x:%x:%x:%x:%x" + " %" S1(MAXHOSTNAMELEN) "s\n"; +#undef S2 +#undef S1 + + assert(l != NULL); + assert(e != NULL); + assert(hostname != NULL); + + if (sscanf(l, fmt, + &i[0], &i[1], &i[2], &i[3], &i[4], &i[5], hostname) == 7) { + e->ether_addr_octet[0] = (unsigned char)i[0]; + e->ether_addr_octet[1] = (unsigned char)i[1]; + e->ether_addr_octet[2] = (unsigned char)i[2]; + e->ether_addr_octet[3] = (unsigned char)i[3]; + e->ether_addr_octet[4] = (unsigned char)i[4]; + e->ether_addr_octet[5] = (unsigned char)i[5]; + return 0; + } + errno = EINVAL; + return -1; +} -- 1.7.9.5