17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 77c478bd9Sstevel@tonic-gate * with the License. 87c478bd9Sstevel@tonic-gate * 97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 127c478bd9Sstevel@tonic-gate * and limitations under the License. 137c478bd9Sstevel@tonic-gate * 147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 197c478bd9Sstevel@tonic-gate * 207c478bd9Sstevel@tonic-gate * CDDL HEADER END 217c478bd9Sstevel@tonic-gate */ 227c478bd9Sstevel@tonic-gate /* 237c478bd9Sstevel@tonic-gate * PPPoE common utilities and data. 247c478bd9Sstevel@tonic-gate * 25*32529ec1Srshoaib * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 267c478bd9Sstevel@tonic-gate * Use is subject to license terms. 277c478bd9Sstevel@tonic-gate */ 287c478bd9Sstevel@tonic-gate 297c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 307c478bd9Sstevel@tonic-gate 317c478bd9Sstevel@tonic-gate #include <stdio.h> 327c478bd9Sstevel@tonic-gate #include <unistd.h> 337c478bd9Sstevel@tonic-gate #include <string.h> 347c478bd9Sstevel@tonic-gate #include <errno.h> 357c478bd9Sstevel@tonic-gate #include <netdb.h> 367c478bd9Sstevel@tonic-gate #include <assert.h> 377c478bd9Sstevel@tonic-gate #include <stropts.h> 387c478bd9Sstevel@tonic-gate #include <sys/types.h> 397c478bd9Sstevel@tonic-gate #include <inet/common.h> 407c478bd9Sstevel@tonic-gate #include <netinet/in.h> 417c478bd9Sstevel@tonic-gate #include <net/sppptun.h> 427c478bd9Sstevel@tonic-gate #include <net/pppoe.h> 437c478bd9Sstevel@tonic-gate #include <arpa/inet.h> 447c478bd9Sstevel@tonic-gate 457c478bd9Sstevel@tonic-gate #include "common.h" 467c478bd9Sstevel@tonic-gate 477c478bd9Sstevel@tonic-gate /* Not all functions are used by all applications. Let lint know this. */ 487c478bd9Sstevel@tonic-gate /*LINTLIBRARY*/ 497c478bd9Sstevel@tonic-gate 507c478bd9Sstevel@tonic-gate /* Common I/O buffers */ 517c478bd9Sstevel@tonic-gate uint32_t pkt_input[PKT_INPUT_LEN / sizeof (uint32_t)]; 527c478bd9Sstevel@tonic-gate uint32_t pkt_octl[PKT_OCTL_LEN / sizeof (uint32_t)]; 537c478bd9Sstevel@tonic-gate uint32_t pkt_output[PKT_OUTPUT_LEN / sizeof (uint32_t)]; 547c478bd9Sstevel@tonic-gate 557c478bd9Sstevel@tonic-gate const char tunnam[] = "/dev/" PPP_TUN_NAME; 567c478bd9Sstevel@tonic-gate 577c478bd9Sstevel@tonic-gate const ether_addr_t ether_bcast = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; 587c478bd9Sstevel@tonic-gate 597c478bd9Sstevel@tonic-gate /* 607c478bd9Sstevel@tonic-gate * Wrapper for standard strerror() function -- the standard allows 617c478bd9Sstevel@tonic-gate * that routine to return NULL, and that's inconvenient to handle. 627c478bd9Sstevel@tonic-gate * This function never returns NULL. 637c478bd9Sstevel@tonic-gate */ 647c478bd9Sstevel@tonic-gate const char * 657c478bd9Sstevel@tonic-gate mystrerror(int err) 667c478bd9Sstevel@tonic-gate { 677c478bd9Sstevel@tonic-gate const char *estr; 687c478bd9Sstevel@tonic-gate static char ebuf[64]; 697c478bd9Sstevel@tonic-gate 707c478bd9Sstevel@tonic-gate if ((estr = strerror(err)) != NULL) 717c478bd9Sstevel@tonic-gate return (estr); 727c478bd9Sstevel@tonic-gate (void) snprintf(ebuf, sizeof (ebuf), "Error:%d", err); 737c478bd9Sstevel@tonic-gate return (ebuf); 747c478bd9Sstevel@tonic-gate } 757c478bd9Sstevel@tonic-gate 767c478bd9Sstevel@tonic-gate /* 777c478bd9Sstevel@tonic-gate * Wrapper for standard perror() function -- the standard definition 787c478bd9Sstevel@tonic-gate * of perror doesn't include the program name in the output and is 797c478bd9Sstevel@tonic-gate * thus inconvenient to use. 807c478bd9Sstevel@tonic-gate */ 817c478bd9Sstevel@tonic-gate void 827c478bd9Sstevel@tonic-gate myperror(const char *emsg) 837c478bd9Sstevel@tonic-gate { 847c478bd9Sstevel@tonic-gate (void) fprintf(stderr, "%s: %s: %s\n", myname, emsg, 857c478bd9Sstevel@tonic-gate mystrerror(errno)); 867c478bd9Sstevel@tonic-gate } 877c478bd9Sstevel@tonic-gate 887c478bd9Sstevel@tonic-gate /* 897c478bd9Sstevel@tonic-gate * Wrapper for standard getmsg() function. Completely discards any 907c478bd9Sstevel@tonic-gate * fragmented messages because we don't expect ever to see these from 917c478bd9Sstevel@tonic-gate * a properly functioning tunnel driver. Returns flags 927c478bd9Sstevel@tonic-gate * (MORECTL|MOREDATA) as seen by interface. 937c478bd9Sstevel@tonic-gate */ 947c478bd9Sstevel@tonic-gate int 957c478bd9Sstevel@tonic-gate mygetmsg(int fd, struct strbuf *ctrl, struct strbuf *data, int *flags) 967c478bd9Sstevel@tonic-gate { 977c478bd9Sstevel@tonic-gate int retv; 987c478bd9Sstevel@tonic-gate int hadflags; 997c478bd9Sstevel@tonic-gate 1007c478bd9Sstevel@tonic-gate hadflags = getmsg(fd, ctrl, data, flags); 1017c478bd9Sstevel@tonic-gate if (hadflags <= 0 || !(hadflags & (MORECTL | MOREDATA))) 1027c478bd9Sstevel@tonic-gate return (hadflags); 1037c478bd9Sstevel@tonic-gate 1047c478bd9Sstevel@tonic-gate do { 1057c478bd9Sstevel@tonic-gate if (flags != NULL) 1067c478bd9Sstevel@tonic-gate *flags = 0; 1077c478bd9Sstevel@tonic-gate retv = getmsg(fd, ctrl, data, flags); 1087c478bd9Sstevel@tonic-gate } while (retv > 0 || (retv < 0 && errno == EINTR)); 1097c478bd9Sstevel@tonic-gate 1107c478bd9Sstevel@tonic-gate /* 1117c478bd9Sstevel@tonic-gate * What remains at this point is the tail end of the 1127c478bd9Sstevel@tonic-gate * truncated message. Toss it. 1137c478bd9Sstevel@tonic-gate */ 1147c478bd9Sstevel@tonic-gate 1157c478bd9Sstevel@tonic-gate return (retv < 0 ? retv : hadflags); 1167c478bd9Sstevel@tonic-gate } 1177c478bd9Sstevel@tonic-gate 1187c478bd9Sstevel@tonic-gate /* 1197c478bd9Sstevel@tonic-gate * Common wrapper function for STREAMS I_STR ioctl. Returns -1 on 1207c478bd9Sstevel@tonic-gate * failure, 0 for success. 1217c478bd9Sstevel@tonic-gate */ 1227c478bd9Sstevel@tonic-gate int 1237c478bd9Sstevel@tonic-gate strioctl(int fd, int cmd, void *ptr, int ilen, int olen) 1247c478bd9Sstevel@tonic-gate { 1257c478bd9Sstevel@tonic-gate struct strioctl str; 1267c478bd9Sstevel@tonic-gate 1277c478bd9Sstevel@tonic-gate str.ic_cmd = cmd; 1287c478bd9Sstevel@tonic-gate str.ic_timout = 0; /* Default timeout; 15 seconds */ 1297c478bd9Sstevel@tonic-gate str.ic_len = ilen; 1307c478bd9Sstevel@tonic-gate str.ic_dp = ptr; 1317c478bd9Sstevel@tonic-gate 1327c478bd9Sstevel@tonic-gate if (ioctl(fd, I_STR, &str) == -1) { 1337c478bd9Sstevel@tonic-gate return (-1); 1347c478bd9Sstevel@tonic-gate } 1357c478bd9Sstevel@tonic-gate if (str.ic_len != olen) { 1367c478bd9Sstevel@tonic-gate errno = EINVAL; 1377c478bd9Sstevel@tonic-gate return (-1); 1387c478bd9Sstevel@tonic-gate } 1397c478bd9Sstevel@tonic-gate return (0); 1407c478bd9Sstevel@tonic-gate } 1417c478bd9Sstevel@tonic-gate 1427c478bd9Sstevel@tonic-gate /* 1437c478bd9Sstevel@tonic-gate * Format a PPPoE header in the user's buffer. The returned pointer 1447c478bd9Sstevel@tonic-gate * is either identical to the first argument, or is NULL if it's not 1457c478bd9Sstevel@tonic-gate * usable. On entry, dptr should point to the first byte after the 1467c478bd9Sstevel@tonic-gate * Ethertype field, codeval should be one of the POECODE_* values, and 1477c478bd9Sstevel@tonic-gate * sessionid should be the assigned session ID number or one of the 1487c478bd9Sstevel@tonic-gate * special POESESS_* values. 1497c478bd9Sstevel@tonic-gate */ 1507c478bd9Sstevel@tonic-gate poep_t * 1517c478bd9Sstevel@tonic-gate poe_mkheader(void *dptr, uint8_t codeval, int sessionid) 1527c478bd9Sstevel@tonic-gate { 1537c478bd9Sstevel@tonic-gate poep_t *poep; 1547c478bd9Sstevel@tonic-gate 1557c478bd9Sstevel@tonic-gate /* Discard obvious junk. */ 1567c478bd9Sstevel@tonic-gate assert(dptr != NULL && IS_P2ALIGNED(dptr, sizeof (poep_t *))); 1577c478bd9Sstevel@tonic-gate 1587c478bd9Sstevel@tonic-gate /* Initialize the header */ 1597c478bd9Sstevel@tonic-gate poep = (poep_t *)dptr; 1607c478bd9Sstevel@tonic-gate poep->poep_version_type = POE_VERSION; 1617c478bd9Sstevel@tonic-gate poep->poep_code = codeval; 1627c478bd9Sstevel@tonic-gate poep->poep_session_id = htons(sessionid); 1637c478bd9Sstevel@tonic-gate poep->poep_length = htons(0); 1647c478bd9Sstevel@tonic-gate return (poep); 1657c478bd9Sstevel@tonic-gate } 1667c478bd9Sstevel@tonic-gate 1677c478bd9Sstevel@tonic-gate /* 1687c478bd9Sstevel@tonic-gate * Validate that a given tag is intact. This is intended to be used 1697c478bd9Sstevel@tonic-gate * in tag-parsing loops before attempting to access the tag data. 1707c478bd9Sstevel@tonic-gate */ 1717c478bd9Sstevel@tonic-gate boolean_t 1727c478bd9Sstevel@tonic-gate poe_tagcheck(const poep_t *poep, int length, const uint8_t *tptr) 1737c478bd9Sstevel@tonic-gate { 1747c478bd9Sstevel@tonic-gate int plen; 1757c478bd9Sstevel@tonic-gate const uint8_t *tstart, *tend; 1767c478bd9Sstevel@tonic-gate 1777c478bd9Sstevel@tonic-gate if (poep == NULL || !IS_P2ALIGNED(poep, sizeof (uint16_t)) || 1787c478bd9Sstevel@tonic-gate tptr == NULL || length < sizeof (*poep)) 1797c478bd9Sstevel@tonic-gate return (B_FALSE); 1807c478bd9Sstevel@tonic-gate 1817c478bd9Sstevel@tonic-gate plen = poe_length(poep); 1827c478bd9Sstevel@tonic-gate if (plen + sizeof (*poep) > length) 1837c478bd9Sstevel@tonic-gate return (B_FALSE); 1847c478bd9Sstevel@tonic-gate 1857c478bd9Sstevel@tonic-gate tstart = (const uint8_t *)(poep+1); 1867c478bd9Sstevel@tonic-gate tend = tstart + plen; 1877c478bd9Sstevel@tonic-gate 1887c478bd9Sstevel@tonic-gate /* 1897c478bd9Sstevel@tonic-gate * Note careful dereference of tptr; it might be near the end 1907c478bd9Sstevel@tonic-gate * already, so we have to range check it before dereferencing 1917c478bd9Sstevel@tonic-gate * to get the actual tag length. Yes, it looks like we have 1927c478bd9Sstevel@tonic-gate * duplicate array end checks. No, they're not duplicates. 1937c478bd9Sstevel@tonic-gate */ 1947c478bd9Sstevel@tonic-gate if (tptr < tstart || tptr+POET_HDRLEN > tend || 1957c478bd9Sstevel@tonic-gate tptr+POET_HDRLEN+POET_GET_LENG(tptr) > tend) 1967c478bd9Sstevel@tonic-gate return (B_FALSE); 1977c478bd9Sstevel@tonic-gate return (B_TRUE); 1987c478bd9Sstevel@tonic-gate } 1997c478bd9Sstevel@tonic-gate 2007c478bd9Sstevel@tonic-gate static int 2017c478bd9Sstevel@tonic-gate poe_tag_insert(poep_t *poep, uint16_t ttype, const void *data, size_t dlen) 2027c478bd9Sstevel@tonic-gate { 2037c478bd9Sstevel@tonic-gate int plen; 2047c478bd9Sstevel@tonic-gate uint8_t *dp; 2057c478bd9Sstevel@tonic-gate 2067c478bd9Sstevel@tonic-gate plen = poe_length(poep); 2077c478bd9Sstevel@tonic-gate if (data == NULL) 2087c478bd9Sstevel@tonic-gate dlen = 0; 2097c478bd9Sstevel@tonic-gate if (sizeof (*poep) + plen + POET_HDRLEN + dlen > PPPOE_MSGMAX) 2107c478bd9Sstevel@tonic-gate return (-1); 2117c478bd9Sstevel@tonic-gate dp = (uint8_t *)(poep + 1) + plen; 2127c478bd9Sstevel@tonic-gate POET_SET_TYPE(dp, ttype); 2137c478bd9Sstevel@tonic-gate POET_SET_LENG(dp, dlen); 2147c478bd9Sstevel@tonic-gate if (dlen > 0) 2157c478bd9Sstevel@tonic-gate (void) memcpy(POET_DATA(dp), data, dlen); 2167c478bd9Sstevel@tonic-gate poep->poep_length = htons(plen + POET_HDRLEN + dlen); 2177c478bd9Sstevel@tonic-gate return (0); 2187c478bd9Sstevel@tonic-gate } 2197c478bd9Sstevel@tonic-gate 2207c478bd9Sstevel@tonic-gate /* 2217c478bd9Sstevel@tonic-gate * Add a tag with text string data to a PPPoE packet being 2227c478bd9Sstevel@tonic-gate * constructed. Returns -1 if it doesn't fit, or 0 for success. 2237c478bd9Sstevel@tonic-gate */ 2247c478bd9Sstevel@tonic-gate int 2257c478bd9Sstevel@tonic-gate poe_add_str(poep_t *poep, uint16_t ttype, const char *str) 2267c478bd9Sstevel@tonic-gate { 2277c478bd9Sstevel@tonic-gate return (poe_tag_insert(poep, ttype, str, strlen(str))); 2287c478bd9Sstevel@tonic-gate } 2297c478bd9Sstevel@tonic-gate 2307c478bd9Sstevel@tonic-gate /* 2317c478bd9Sstevel@tonic-gate * Add a tag with 32-bit integer data to a PPPoE packet being 2327c478bd9Sstevel@tonic-gate * constructed. Returns -1 if it doesn't fit, or 0 for success. 2337c478bd9Sstevel@tonic-gate */ 2347c478bd9Sstevel@tonic-gate int 2357c478bd9Sstevel@tonic-gate poe_add_long(poep_t *poep, uint16_t ttype, uint32_t val) 2367c478bd9Sstevel@tonic-gate { 2377c478bd9Sstevel@tonic-gate val = htonl(val); 2387c478bd9Sstevel@tonic-gate return (poe_tag_insert(poep, ttype, &val, sizeof (val))); 2397c478bd9Sstevel@tonic-gate } 2407c478bd9Sstevel@tonic-gate 2417c478bd9Sstevel@tonic-gate /* 2427c478bd9Sstevel@tonic-gate * Add a tag with two 32-bit integers to a PPPoE packet being 2437c478bd9Sstevel@tonic-gate * constructed. Returns -1 if it doesn't fit, or 0 for success. 2447c478bd9Sstevel@tonic-gate */ 2457c478bd9Sstevel@tonic-gate int 2467c478bd9Sstevel@tonic-gate poe_two_longs(poep_t *poep, uint16_t ttype, uint32_t val1, uint32_t val2) 2477c478bd9Sstevel@tonic-gate { 2487c478bd9Sstevel@tonic-gate uint32_t vals[2]; 2497c478bd9Sstevel@tonic-gate 2507c478bd9Sstevel@tonic-gate vals[0] = htonl(val1); 2517c478bd9Sstevel@tonic-gate vals[1] = htonl(val2); 2527c478bd9Sstevel@tonic-gate return (poe_tag_insert(poep, ttype, vals, sizeof (vals))); 2537c478bd9Sstevel@tonic-gate } 2547c478bd9Sstevel@tonic-gate 2557c478bd9Sstevel@tonic-gate /* 2567c478bd9Sstevel@tonic-gate * Copy a single tag and its data from one PPPoE packet to a PPPoE 2577c478bd9Sstevel@tonic-gate * packet being constructed. Returns -1 if it doesn't fit, or 0 for 2587c478bd9Sstevel@tonic-gate * success. 2597c478bd9Sstevel@tonic-gate */ 2607c478bd9Sstevel@tonic-gate int 2617c478bd9Sstevel@tonic-gate poe_tag_copy(poep_t *poep, const uint8_t *tagp) 2627c478bd9Sstevel@tonic-gate { 2637c478bd9Sstevel@tonic-gate int tlen; 2647c478bd9Sstevel@tonic-gate int plen; 2657c478bd9Sstevel@tonic-gate 2667c478bd9Sstevel@tonic-gate tlen = POET_GET_LENG(tagp) + POET_HDRLEN; 2677c478bd9Sstevel@tonic-gate plen = poe_length(poep); 2687c478bd9Sstevel@tonic-gate if (sizeof (*poep) + plen + tlen > PPPOE_MSGMAX) 2697c478bd9Sstevel@tonic-gate return (-1); 2707c478bd9Sstevel@tonic-gate (void) memcpy((uint8_t *)(poep + 1) + plen, tagp, tlen); 2717c478bd9Sstevel@tonic-gate poep->poep_length = htons(tlen + plen); 2727c478bd9Sstevel@tonic-gate return (0); 2737c478bd9Sstevel@tonic-gate } 2747c478bd9Sstevel@tonic-gate 2757c478bd9Sstevel@tonic-gate struct tag_list { 2767c478bd9Sstevel@tonic-gate int tl_type; 2777c478bd9Sstevel@tonic-gate const char *tl_name; 2787c478bd9Sstevel@tonic-gate }; 2797c478bd9Sstevel@tonic-gate 2807c478bd9Sstevel@tonic-gate /* List of PPPoE data tag types. */ 2817c478bd9Sstevel@tonic-gate static const struct tag_list tag_list[] = { 2827c478bd9Sstevel@tonic-gate { POETT_END, "End-Of-List" }, 2837c478bd9Sstevel@tonic-gate { POETT_SERVICE, "Service-Name" }, 2847c478bd9Sstevel@tonic-gate { POETT_ACCESS, "AC-Name" }, 2857c478bd9Sstevel@tonic-gate { POETT_UNIQ, "Host-Uniq" }, 2867c478bd9Sstevel@tonic-gate { POETT_COOKIE, "AC-Cookie" }, 2877c478bd9Sstevel@tonic-gate { POETT_VENDOR, "Vendor-Specific" }, 2887c478bd9Sstevel@tonic-gate { POETT_RELAY, "Relay-Session-Id" }, 2897c478bd9Sstevel@tonic-gate { POETT_NAMERR, "Service-Name-Error" }, 2907c478bd9Sstevel@tonic-gate { POETT_SYSERR, "AC-System-Error" }, 2917c478bd9Sstevel@tonic-gate { POETT_GENERR, "Generic-Error" }, 2927c478bd9Sstevel@tonic-gate { POETT_MULTI, "Multicast-Capable" }, 2937c478bd9Sstevel@tonic-gate { POETT_HURL, "Host-URL" }, 2947c478bd9Sstevel@tonic-gate { POETT_MOTM, "Message-Of-The-Minute" }, 2957c478bd9Sstevel@tonic-gate { POETT_RTEADD, "IP-Route-Add" }, 2967c478bd9Sstevel@tonic-gate { 0, NULL } 2977c478bd9Sstevel@tonic-gate }; 2987c478bd9Sstevel@tonic-gate 2997c478bd9Sstevel@tonic-gate /* List of PPPoE message code numbers. */ 3007c478bd9Sstevel@tonic-gate static const struct tag_list code_list[] = { 3017c478bd9Sstevel@tonic-gate { POECODE_DATA, "Data" }, 3027c478bd9Sstevel@tonic-gate { POECODE_PADO, "Active Discovery Offer" }, 3037c478bd9Sstevel@tonic-gate { POECODE_PADI, "Active Discovery Initiation" }, 3047c478bd9Sstevel@tonic-gate { POECODE_PADR, "Active Discovery Request" }, 3057c478bd9Sstevel@tonic-gate { POECODE_PADS, "Active Discovery Session-confirmation" }, 3067c478bd9Sstevel@tonic-gate { POECODE_PADT, "Active Discovery Terminate" }, 3077c478bd9Sstevel@tonic-gate { POECODE_PADM, "Active Discovery Message" }, 3087c478bd9Sstevel@tonic-gate { POECODE_PADN, "Active Discovery Network" }, 3097c478bd9Sstevel@tonic-gate { 0, NULL } 3107c478bd9Sstevel@tonic-gate }; 3117c478bd9Sstevel@tonic-gate 3127c478bd9Sstevel@tonic-gate /* 3137c478bd9Sstevel@tonic-gate * Given a tag type number, return a pointer to a string describing 3147c478bd9Sstevel@tonic-gate * the tag. 3157c478bd9Sstevel@tonic-gate */ 3167c478bd9Sstevel@tonic-gate const char * 3177c478bd9Sstevel@tonic-gate poe_tagname(uint16_t tagtype) 3187c478bd9Sstevel@tonic-gate { 3197c478bd9Sstevel@tonic-gate const struct tag_list *tlp; 3207c478bd9Sstevel@tonic-gate static char tname[32]; 3217c478bd9Sstevel@tonic-gate 3227c478bd9Sstevel@tonic-gate for (tlp = tag_list; tlp->tl_name != NULL; tlp++) 3237c478bd9Sstevel@tonic-gate if (tagtype == tlp->tl_type) 3247c478bd9Sstevel@tonic-gate return (tlp->tl_name); 3257c478bd9Sstevel@tonic-gate (void) sprintf(tname, "Tag%d", tagtype); 3267c478bd9Sstevel@tonic-gate return (tname); 3277c478bd9Sstevel@tonic-gate } 3287c478bd9Sstevel@tonic-gate 3297c478bd9Sstevel@tonic-gate /* 3307c478bd9Sstevel@tonic-gate * Given a PPPoE message code number, return a pointer to a string 3317c478bd9Sstevel@tonic-gate * describing the message. 3327c478bd9Sstevel@tonic-gate */ 3337c478bd9Sstevel@tonic-gate const char * 3347c478bd9Sstevel@tonic-gate poe_codename(uint8_t codetype) 3357c478bd9Sstevel@tonic-gate { 3367c478bd9Sstevel@tonic-gate const struct tag_list *tlp; 3377c478bd9Sstevel@tonic-gate static char tname[32]; 3387c478bd9Sstevel@tonic-gate 3397c478bd9Sstevel@tonic-gate for (tlp = code_list; tlp->tl_name != NULL; tlp++) 3407c478bd9Sstevel@tonic-gate if (codetype == tlp->tl_type) 3417c478bd9Sstevel@tonic-gate return (tlp->tl_name); 3427c478bd9Sstevel@tonic-gate (void) sprintf(tname, "Code%d", codetype); 3437c478bd9Sstevel@tonic-gate return (tname); 3447c478bd9Sstevel@tonic-gate } 3457c478bd9Sstevel@tonic-gate 3467c478bd9Sstevel@tonic-gate /* 3477c478bd9Sstevel@tonic-gate * Given a tunnel driver address structure, return a pointer to a 3487c478bd9Sstevel@tonic-gate * string naming that Ethernet host. 3497c478bd9Sstevel@tonic-gate */ 3507c478bd9Sstevel@tonic-gate const char * 3517c478bd9Sstevel@tonic-gate ehost2(const struct ether_addr *ea) 3527c478bd9Sstevel@tonic-gate { 3537c478bd9Sstevel@tonic-gate static char hbuf[MAXHOSTNAMELEN+1]; 3547c478bd9Sstevel@tonic-gate 3557c478bd9Sstevel@tonic-gate if (ea == NULL) 3567c478bd9Sstevel@tonic-gate return ("NULL"); 3577c478bd9Sstevel@tonic-gate if (ether_ntohost(hbuf, ea) == 0) 3587c478bd9Sstevel@tonic-gate return (hbuf); 3597c478bd9Sstevel@tonic-gate return (ether_ntoa(ea)); 3607c478bd9Sstevel@tonic-gate } 3617c478bd9Sstevel@tonic-gate 3627c478bd9Sstevel@tonic-gate const char * 3637c478bd9Sstevel@tonic-gate ehost(const ppptun_atype *pap) 3647c478bd9Sstevel@tonic-gate { 3657c478bd9Sstevel@tonic-gate return (ehost2((const struct ether_addr *)pap)); 3667c478bd9Sstevel@tonic-gate } 3677c478bd9Sstevel@tonic-gate 3687c478bd9Sstevel@tonic-gate /* 3697c478bd9Sstevel@tonic-gate * Given an Internet address (in network byte order), return a pointer 3707c478bd9Sstevel@tonic-gate * to a string naming the host. 3717c478bd9Sstevel@tonic-gate */ 3727c478bd9Sstevel@tonic-gate const char * 3737c478bd9Sstevel@tonic-gate ihost(uint32_t haddr) 3747c478bd9Sstevel@tonic-gate { 3757c478bd9Sstevel@tonic-gate struct hostent *hp; 3767c478bd9Sstevel@tonic-gate struct sockaddr_in sin; 3777c478bd9Sstevel@tonic-gate 3787c478bd9Sstevel@tonic-gate (void) memset(&sin, '\0', sizeof (sin)); 3797c478bd9Sstevel@tonic-gate sin.sin_addr.s_addr = haddr; 3807c478bd9Sstevel@tonic-gate hp = gethostbyaddr((const char *)&sin, sizeof (sin), AF_INET); 3817c478bd9Sstevel@tonic-gate if (hp != NULL) 3827c478bd9Sstevel@tonic-gate return (hp->h_name); 3837c478bd9Sstevel@tonic-gate return (inet_ntoa(sin.sin_addr)); 3847c478bd9Sstevel@tonic-gate } 3857c478bd9Sstevel@tonic-gate 3867c478bd9Sstevel@tonic-gate int 3877c478bd9Sstevel@tonic-gate hexdecode(char chr) 3887c478bd9Sstevel@tonic-gate { 3897c478bd9Sstevel@tonic-gate if (chr >= '0' && chr <= '9') 3907c478bd9Sstevel@tonic-gate return ((int)(chr - '0')); 391*32529ec1Srshoaib if (chr >= 'a' && chr <= 'f') 3927c478bd9Sstevel@tonic-gate return ((int)(chr - 'a' + 10)); 3937c478bd9Sstevel@tonic-gate return ((int)(chr - 'A' + 10)); 3947c478bd9Sstevel@tonic-gate } 395