1 /* 2 __ __ _ 3 ___\ \/ /_ __ __ _| |_ 4 / _ \\ /| '_ \ / _` | __| 5 | __// \| |_) | (_| | |_ 6 \___/_/\_\ .__/ \__,_|\__| 7 |_| XML parser 8 9 Copyright (c) 1997-2000 Thai Open Source Software Center Ltd 10 Copyright (c) 2000 Clark Cooper <coopercc@users.sourceforge.net> 11 Copyright (c) 2001-2004 Fred L. Drake, Jr. <fdrake@users.sourceforge.net> 12 Copyright (c) 2002-2009 Karl Waclawek <karl@waclawek.net> 13 Copyright (c) 2016-2017 Sebastian Pipping <sebastian@pipping.org> 14 Copyright (c) 2017 Rhodri James <rhodri@wildebeest.org.uk> 15 Copyright (c) 2017 Franek Korta <fkorta@gmail.com> 16 Copyright (c) 2022 Sean McBride <sean@rogue-research.com> 17 Licensed under the MIT license: 18 19 Permission is hereby granted, free of charge, to any person obtaining 20 a copy of this software and associated documentation files (the 21 "Software"), to deal in the Software without restriction, including 22 without limitation the rights to use, copy, modify, merge, publish, 23 distribute, sublicense, and/or sell copies of the Software, and to permit 24 persons to whom the Software is furnished to do so, subject to the 25 following conditions: 26 27 The above copyright notice and this permission notice shall be included 28 in all copies or substantial portions of the Software. 29 30 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 31 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 32 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN 33 NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 34 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 35 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 36 USE OR OTHER DEALINGS IN THE SOFTWARE. 37 */ 38 39 #include <sys/types.h> 40 #include <sys/stat.h> 41 #include <fcntl.h> 42 #include <stdlib.h> 43 #include <stdio.h> 44 45 /* Functions close(2) and read(2) */ 46 #if ! defined(_WIN32) && ! defined(_WIN64) 47 # include <unistd.h> 48 #endif 49 50 /* Function "read": */ 51 #if defined(_MSC_VER) 52 # include <io.h> 53 /* https://msdn.microsoft.com/en-us/library/wyssk1bs(v=vs.100).aspx */ 54 # define EXPAT_read _read 55 # define EXPAT_read_count_t int 56 # define EXPAT_read_req_t unsigned int 57 #else /* POSIX */ 58 /* http://pubs.opengroup.org/onlinepubs/009695399/functions/read.html */ 59 # define EXPAT_read read 60 # define EXPAT_read_count_t ssize_t 61 # define EXPAT_read_req_t size_t 62 #endif 63 64 #ifndef S_ISREG 65 # ifndef S_IFREG 66 # define S_IFREG _S_IFREG 67 # endif 68 # ifndef S_IFMT 69 # define S_IFMT _S_IFMT 70 # endif 71 # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) 72 #endif /* not S_ISREG */ 73 74 #ifndef O_BINARY 75 # ifdef _O_BINARY 76 # define O_BINARY _O_BINARY 77 # else 78 # define O_BINARY 0 79 # endif 80 #endif 81 82 #include "xmltchar.h" 83 #include "filemap.h" 84 85 int 86 filemap(const tchar *name, 87 void (*processor)(const void *, size_t, const tchar *, void *arg), 88 void *arg) { 89 size_t nbytes; 90 int fd; 91 EXPAT_read_count_t n; 92 struct stat sb; 93 void *p; 94 95 fd = topen(name, O_RDONLY | O_BINARY); 96 if (fd < 0) { 97 tperror(name); 98 return 0; 99 } 100 if (fstat(fd, &sb) < 0) { 101 tperror(name); 102 close(fd); 103 return 0; 104 } 105 if (! S_ISREG(sb.st_mode)) { 106 ftprintf(stderr, T("%s: not a regular file\n"), name); 107 close(fd); 108 return 0; 109 } 110 if (sb.st_size > XML_MAX_CHUNK_LEN) { 111 close(fd); 112 return 2; /* Cannot be passed to XML_Parse in one go */ 113 } 114 115 nbytes = sb.st_size; 116 /* malloc will return NULL with nbytes == 0, handle files with size 0 */ 117 if (nbytes == 0) { 118 static const char c = '\0'; 119 processor(&c, 0, name, arg); 120 close(fd); 121 return 1; 122 } 123 p = malloc(nbytes); 124 if (! p) { 125 ftprintf(stderr, T("%s: out of memory\n"), name); 126 close(fd); 127 return 0; 128 } 129 n = EXPAT_read(fd, p, (EXPAT_read_req_t)nbytes); 130 if (n < 0) { 131 tperror(name); 132 free(p); 133 close(fd); 134 return 0; 135 } 136 if (n != (EXPAT_read_count_t)nbytes) { 137 ftprintf(stderr, T("%s: read unexpected number of bytes\n"), name); 138 free(p); 139 close(fd); 140 return 0; 141 } 142 processor(p, nbytes, name, arg); 143 free(p); 144 close(fd); 145 return 1; 146 } 147