1 /*- 2 * Copyright (c) 1998-2004 Dag-Erling Co�dan Sm�rgrav 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD: src/lib/libfetch/file.c,v 1.18 2007/12/14 10:26:58 des Exp $ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/stat.h> 33 34 #include <dirent.h> 35 #include <fcntl.h> 36 #include <stdio.h> 37 #include <string.h> 38 39 #include "fetch.h" 40 #include "common.h" 41 42 FILE * 43 fetchXGetFile(struct url *u, struct url_stat *us, const char *flags) 44 { 45 FILE *f; 46 47 if (us && fetchStatFile(u, us, flags) == -1) 48 return (NULL); 49 50 f = fopen(u->doc, "r"); 51 52 if (f == NULL) 53 fetch_syserr(); 54 55 if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) { 56 fclose(f); 57 fetch_syserr(); 58 } 59 60 fcntl(fileno(f), F_SETFD, FD_CLOEXEC); 61 return (f); 62 } 63 64 FILE * 65 fetchGetFile(struct url *u, const char *flags) 66 { 67 return (fetchXGetFile(u, NULL, flags)); 68 } 69 70 FILE * 71 fetchPutFile(struct url *u, const char *flags) 72 { 73 FILE *f; 74 75 if (CHECK_FLAG('a')) 76 f = fopen(u->doc, "a"); 77 else 78 f = fopen(u->doc, "w+"); 79 80 if (f == NULL) 81 fetch_syserr(); 82 83 if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) { 84 fclose(f); 85 fetch_syserr(); 86 } 87 88 fcntl(fileno(f), F_SETFD, FD_CLOEXEC); 89 return (f); 90 } 91 92 static int 93 fetch_stat_file(const char *fn, struct url_stat *us) 94 { 95 struct stat sb; 96 97 us->size = -1; 98 us->atime = us->mtime = 0; 99 if (stat(fn, &sb) == -1) { 100 fetch_syserr(); 101 return (-1); 102 } 103 us->size = sb.st_size; 104 us->atime = sb.st_atime; 105 us->mtime = sb.st_mtime; 106 return (0); 107 } 108 109 int 110 fetchStatFile(struct url *u, struct url_stat *us, const char *flags __unused) 111 { 112 return (fetch_stat_file(u->doc, us)); 113 } 114 115 struct url_ent * 116 fetchListFile(struct url *u, const char *flags __unused) 117 { 118 struct dirent *de; 119 struct url_stat us; 120 struct url_ent *ue; 121 int size, len; 122 char fn[PATH_MAX], *p; 123 DIR *dir; 124 int l; 125 126 if ((dir = opendir(u->doc)) == NULL) { 127 fetch_syserr(); 128 return (NULL); 129 } 130 131 ue = NULL; 132 strncpy(fn, u->doc, sizeof(fn) - 2); 133 fn[sizeof(fn) - 2] = 0; 134 strcat(fn, "/"); 135 p = strchr(fn, 0); 136 l = sizeof(fn) - strlen(fn) - 1; 137 138 while ((de = readdir(dir)) != NULL) { 139 strncpy(p, de->d_name, l - 1); 140 p[l - 1] = 0; 141 if (fetch_stat_file(fn, &us) == -1) 142 /* should I return a partial result, or abort? */ 143 break; 144 fetch_add_entry(&ue, &size, &len, de->d_name, &us); 145 } 146 147 return (ue); 148 } 149