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 Copyright (c) 2025 Hanno Böck <hanno@gentoo.org> 18 Licensed under the MIT license: 19 20 Permission is hereby granted, free of charge, to any person obtaining 21 a copy of this software and associated documentation files (the 22 "Software"), to deal in the Software without restriction, including 23 without limitation the rights to use, copy, modify, merge, publish, 24 distribute, sublicense, and/or sell copies of the Software, and to permit 25 persons to whom the Software is furnished to do so, subject to the 26 following conditions: 27 28 The above copyright notice and this permission notice shall be included 29 in all copies or substantial portions of the Software. 30 31 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 32 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 33 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN 34 NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 35 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 36 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 37 USE OR OTHER DEALINGS IN THE SOFTWARE. 38 */ 39 40 #include <sys/types.h> 41 #include <sys/stat.h> 42 #include <fcntl.h> 43 #include <stdlib.h> 44 #include <stdio.h> 45 46 /* Functions close(2) and read(2) */ 47 #if ! defined(_WIN32) && ! defined(_WIN64) 48 # include <unistd.h> 49 #endif 50 51 /* Function "read": */ 52 #if defined(_MSC_VER) 53 # include <io.h> 54 /* https://msdn.microsoft.com/en-us/library/wyssk1bs(v=vs.100).aspx */ 55 # define EXPAT_read _read 56 # define EXPAT_read_count_t int 57 # define EXPAT_read_req_t unsigned int 58 #else /* POSIX */ 59 /* https://pubs.opengroup.org/onlinepubs/009695399/functions/read.html */ 60 # define EXPAT_read read 61 # define EXPAT_read_count_t ssize_t 62 # define EXPAT_read_req_t size_t 63 #endif 64 65 #ifndef S_ISREG 66 # ifndef S_IFREG 67 # define S_IFREG _S_IFREG 68 # endif 69 # ifndef S_IFMT 70 # define S_IFMT _S_IFMT 71 # endif 72 # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) 73 #endif /* not S_ISREG */ 74 75 #ifndef O_BINARY 76 # ifdef _O_BINARY 77 # define O_BINARY _O_BINARY 78 # else 79 # define O_BINARY 0 80 # endif 81 #endif 82 83 #include "xmltchar.h" 84 #include "filemap.h" 85 86 int 87 filemap(const tchar *name, 88 void (*processor)(const void *, size_t, const tchar *, void *arg), 89 void *arg) { 90 size_t nbytes; 91 int fd; 92 EXPAT_read_count_t n; 93 struct stat sb; 94 void *p; 95 96 fd = topen(name, O_RDONLY | O_BINARY); 97 if (fd < 0) { 98 tperror(name); 99 return 0; 100 } 101 if (fstat(fd, &sb) < 0) { 102 tperror(name); 103 close(fd); 104 return 0; 105 } 106 if (! S_ISREG(sb.st_mode)) { 107 ftprintf(stderr, T("%s: not a regular file\n"), name); 108 close(fd); 109 return 0; 110 } 111 if (sb.st_size > XML_MAX_CHUNK_LEN) { 112 close(fd); 113 return 2; /* Cannot be passed to XML_Parse in one go */ 114 } 115 116 nbytes = sb.st_size; 117 /* malloc will return NULL with nbytes == 0, handle files with size 0 */ 118 if (nbytes == 0) { 119 static const char c = '\0'; 120 processor(&c, 0, name, arg); 121 close(fd); 122 return 1; 123 } 124 p = malloc(nbytes); 125 if (! p) { 126 ftprintf(stderr, T("%s: out of memory\n"), name); 127 close(fd); 128 return 0; 129 } 130 n = EXPAT_read(fd, p, (EXPAT_read_req_t)nbytes); 131 if (n < 0) { 132 tperror(name); 133 free(p); 134 close(fd); 135 return 0; 136 } 137 if (n != (EXPAT_read_count_t)nbytes) { 138 ftprintf(stderr, T("%s: read unexpected number of bytes\n"), name); 139 free(p); 140 close(fd); 141 return 0; 142 } 143 processor(p, nbytes, name, arg); 144 free(p); 145 close(fd); 146 return 1; 147 } 148