1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1998-2011 Dag-Erling Smørgrav 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer 12 * in this position and unchanged. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 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, "re"); 51 52 if (f == NULL) { 53 fetch_syserr(); 54 return (NULL); 55 } 56 57 if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) { 58 fclose(f); 59 fetch_syserr(); 60 return (NULL); 61 } 62 63 return (f); 64 } 65 66 FILE * 67 fetchGetFile(struct url *u, const char *flags) 68 { 69 return (fetchXGetFile(u, NULL, flags)); 70 } 71 72 FILE * 73 fetchPutFile(struct url *u, const char *flags) 74 { 75 FILE *f; 76 77 if (CHECK_FLAG('a')) 78 f = fopen(u->doc, "ae"); 79 else 80 f = fopen(u->doc, "w+e"); 81 82 if (f == NULL) { 83 fetch_syserr(); 84 return (NULL); 85 } 86 87 if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) { 88 fclose(f); 89 fetch_syserr(); 90 return (NULL); 91 } 92 93 return (f); 94 } 95 96 static int 97 fetch_stat_file(const char *fn, struct url_stat *us) 98 { 99 struct stat sb; 100 101 us->size = -1; 102 us->atime = us->mtime = 0; 103 if (stat(fn, &sb) == -1) { 104 fetch_syserr(); 105 return (-1); 106 } 107 us->size = sb.st_size; 108 us->atime = sb.st_atime; 109 us->mtime = sb.st_mtime; 110 return (0); 111 } 112 113 int 114 fetchStatFile(struct url *u, struct url_stat *us, const char *flags __unused) 115 { 116 return (fetch_stat_file(u->doc, us)); 117 } 118 119 struct url_ent * 120 fetchListFile(struct url *u, const char *flags __unused) 121 { 122 struct dirent *de; 123 struct url_stat us; 124 struct url_ent *ue; 125 int size, len; 126 char fn[PATH_MAX], *p; 127 DIR *dir; 128 int l; 129 130 if ((dir = opendir(u->doc)) == NULL) { 131 fetch_syserr(); 132 return (NULL); 133 } 134 135 ue = NULL; 136 strncpy(fn, u->doc, sizeof(fn) - 2); 137 fn[sizeof(fn) - 2] = 0; 138 strcat(fn, "/"); 139 p = strchr(fn, 0); 140 l = sizeof(fn) - strlen(fn) - 1; 141 142 while ((de = readdir(dir)) != NULL) { 143 strncpy(p, de->d_name, l - 1); 144 p[l - 1] = 0; 145 if (fetch_stat_file(fn, &us) == -1) 146 /* should I return a partial result, or abort? */ 147 break; 148 fetch_add_entry(&ue, &size, &len, de->d_name, &us); 149 } 150 151 closedir(dir); 152 return (ue); 153 } 154