1/* 2 Unix SMB/CIFS implementation. 3 4 manipulate nbt name structures 5 6 Copyright (C) Andrew Tridgell 1994-1998 7 Copyright (C) Jeremy Allison 2007 8 Copyright (C) Andrew Bartlett 2009. 9 10 This program is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3 of the License, or 13 (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program. If not, see <http://www.gnu.org/licenses/>. 22*/ 23 24#include "includes.h" 25#include "lib/util/xfile.h" 26#include "lib/util/util_net.h" 27#include "system/filesys.h" 28#include "system/network.h" 29 30/******************************************************** 31 Start parsing the lmhosts file. 32*********************************************************/ 33 34XFILE *startlmhosts(const char *fname) 35{ 36 XFILE *fp = x_fopen(fname,O_RDONLY, 0); 37 if (!fp) { 38 DEBUG(4,("startlmhosts: Can't open lmhosts file %s. " 39 "Error was %s\n", 40 fname, strerror(errno))); 41 return NULL; 42 } 43 return fp; 44} 45 46/******************************************************** 47 Parse the next line in the lmhosts file. 48*********************************************************/ 49 50bool getlmhostsent(TALLOC_CTX *ctx, XFILE *fp, char **pp_name, int *name_type, 51 struct sockaddr_storage *pss) 52{ 53 char line[1024]; 54 55 *pp_name = NULL; 56 57 while(!x_feof(fp) && !x_ferror(fp)) { 58 char *ip = NULL; 59 char *flags = NULL; 60 char *extra = NULL; 61 char *name = NULL; 62 const char *ptr; 63 char *ptr1 = NULL; 64 int count = 0; 65 66 *name_type = -1; 67 68 if (!fgets_slash(line,sizeof(line),fp)) { 69 continue; 70 } 71 72 if (*line == '#') { 73 continue; 74 } 75 76 ptr = line; 77 78 if (next_token_talloc(ctx, &ptr, &ip, NULL)) 79 ++count; 80 if (next_token_talloc(ctx, &ptr, &name, NULL)) 81 ++count; 82 if (next_token_talloc(ctx, &ptr, &flags, NULL)) 83 ++count; 84 if (next_token_talloc(ctx, &ptr, &extra, NULL)) 85 ++count; 86 87 if (count <= 0) 88 continue; 89 90 if (count > 0 && count < 2) { 91 DEBUG(0,("getlmhostsent: Ill formed hosts line [%s]\n", 92 line)); 93 continue; 94 } 95 96 if (count >= 4) { 97 DEBUG(0,("getlmhostsent: too many columns " 98 "in lmhosts file (obsolete syntax)\n")); 99 continue; 100 } 101 102 if (!flags) { 103 flags = talloc_strdup(ctx, ""); 104 if (!flags) { 105 continue; 106 } 107 } 108 109 DEBUG(4, ("getlmhostsent: lmhost entry: %s %s %s\n", 110 ip, name, flags)); 111 112 if (strchr_m(flags,'G') || strchr_m(flags,'S')) { 113 DEBUG(0,("getlmhostsent: group flag " 114 "in lmhosts ignored (obsolete)\n")); 115 continue; 116 } 117 118 if (!interpret_string_addr(pss, ip, AI_NUMERICHOST)) { 119 DEBUG(0,("getlmhostsent: invalid address " 120 "%s.\n", ip)); 121 } 122 123 /* Extra feature. If the name ends in '#XX', 124 * where XX is a hex number, then only add that name type. */ 125 if((ptr1 = strchr_m(name, '#')) != NULL) { 126 char *endptr; 127 ptr1++; 128 129 *name_type = (int)strtol(ptr1, &endptr, 16); 130 if(!*ptr1 || (endptr == ptr1)) { 131 DEBUG(0,("getlmhostsent: invalid name " 132 "%s containing '#'.\n", name)); 133 continue; 134 } 135 136 *(--ptr1) = '\0'; /* Truncate at the '#' */ 137 } 138 139 *pp_name = talloc_strdup(ctx, name); 140 if (!*pp_name) { 141 return false; 142 } 143 return true; 144 } 145 146 return false; 147} 148 149/******************************************************** 150 Finish parsing the lmhosts file. 151*********************************************************/ 152 153void endlmhosts(XFILE *fp) 154{ 155 x_fclose(fp); 156} 157 158