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