1 /*- 2 * Copyright (c) 1998-2011 Dag-Erling Smørgrav 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 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/stat.h> 34 35 #include <dirent.h> 36 #include <fcntl.h> 37 #include <stdio.h> 38 #include <string.h> 39 40 #include "fetch.h" 41 #include "common.h" 42 43 FILE * 44 fetchXGetFile(struct url *u, struct url_stat *us, const char *flags) 45 { 46 FILE *f; 47 48 if (us && fetchStatFile(u, us, flags) == -1) 49 return (NULL); 50 51 f = fopen(u->doc, "r"); 52 53 if (f == NULL) { 54 fetch_syserr(); 55 return (NULL); 56 } 57 58 if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) { 59 fclose(f); 60 fetch_syserr(); 61 return (NULL); 62 } 63 64 fcntl(fileno(f), F_SETFD, FD_CLOEXEC); 65 return (f); 66 } 67 68 FILE * 69 fetchGetFile(struct url *u, const char *flags) 70 { 71 return (fetchXGetFile(u, NULL, flags)); 72 } 73 74 FILE * 75 fetchPutFile(struct url *u, const char *flags) 76 { 77 FILE *f; 78 79 if (CHECK_FLAG('a')) 80 f = fopen(u->doc, "a"); 81 else 82 f = fopen(u->doc, "w+"); 83 84 if (f == NULL) { 85 fetch_syserr(); 86 return (NULL); 87 } 88 89 if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) { 90 fclose(f); 91 fetch_syserr(); 92 return (NULL); 93 } 94 95 fcntl(fileno(f), F_SETFD, FD_CLOEXEC); 96 return (f); 97 } 98 99 static int 100 fetch_stat_file(const char *fn, struct url_stat *us) 101 { 102 struct stat sb; 103 104 us->size = -1; 105 us->atime = us->mtime = 0; 106 if (stat(fn, &sb) == -1) { 107 fetch_syserr(); 108 return (-1); 109 } 110 us->size = sb.st_size; 111 us->atime = sb.st_atime; 112 us->mtime = sb.st_mtime; 113 return (0); 114 } 115 116 int 117 fetchStatFile(struct url *u, struct url_stat *us, const char *flags __unused) 118 { 119 return (fetch_stat_file(u->doc, us)); 120 } 121 122 struct url_ent * 123 fetchListFile(struct url *u, const char *flags __unused) 124 { 125 struct dirent *de; 126 struct url_stat us; 127 struct url_ent *ue; 128 int size, len; 129 char fn[PATH_MAX], *p; 130 DIR *dir; 131 int l; 132 133 if ((dir = opendir(u->doc)) == NULL) { 134 fetch_syserr(); 135 return (NULL); 136 } 137 138 ue = NULL; 139 strncpy(fn, u->doc, sizeof(fn) - 2); 140 fn[sizeof(fn) - 2] = 0; 141 strcat(fn, "/"); 142 p = strchr(fn, 0); 143 l = sizeof(fn) - strlen(fn) - 1; 144 145 while ((de = readdir(dir)) != NULL) { 146 strncpy(p, de->d_name, l - 1); 147 p[l - 1] = 0; 148 if (fetch_stat_file(fn, &us) == -1) 149 /* should I return a partial result, or abort? */ 150 break; 151 fetch_add_entry(&ue, &size, &len, de->d_name, &us); 152 } 153 154 return (ue); 155 } 156