file.c revision 83076
137535Sdes/*- 237535Sdes * Copyright (c) 1998 Dag-Erling Co�dan Sm�rgrav 337535Sdes * All rights reserved. 437535Sdes * 537535Sdes * Redistribution and use in source and binary forms, with or without 637535Sdes * modification, are permitted provided that the following conditions 737535Sdes * are met: 837535Sdes * 1. Redistributions of source code must retain the above copyright 937535Sdes * notice, this list of conditions and the following disclaimer 1037535Sdes * in this position and unchanged. 1137535Sdes * 2. Redistributions in binary form must reproduce the above copyright 1237535Sdes * notice, this list of conditions and the following disclaimer in the 1337535Sdes * documentation and/or other materials provided with the distribution. 1437535Sdes * 3. The name of the author may not be used to endorse or promote products 1537535Sdes * derived from this software without specific prior written permission 1637535Sdes * 1737535Sdes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 1837535Sdes * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 1937535Sdes * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 2037535Sdes * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 2137535Sdes * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 2237535Sdes * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2337535Sdes * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2437535Sdes * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2537535Sdes * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 2637535Sdes * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2737535Sdes * 2850476Speter * $FreeBSD: head/lib/libfetch/file.c 83076 2001-09-05 12:22:28Z des $ 2937535Sdes */ 3037535Sdes 3141862Sdes#include <sys/param.h> 3240975Sdes#include <sys/stat.h> 3341989Sdes 3441989Sdes#include <dirent.h> 3537535Sdes#include <stdio.h> 3637535Sdes#include <string.h> 3737535Sdes 3837535Sdes#include "fetch.h" 3940975Sdes#include "common.h" 4037535Sdes 4137535SdesFILE * 4275891SarchiefetchXGetFile(struct url *u, struct url_stat *us, const char *flags) 4337535Sdes{ 4440975Sdes FILE *f; 4540975Sdes 4663340Sdes if (us && fetchStatFile(u, us, flags) == -1) 4763340Sdes return NULL; 4863340Sdes 4940975Sdes f = fopen(u->doc, "r"); 5040975Sdes 5140975Sdes if (f == NULL) 5240975Sdes _fetch_syserr(); 5360187Sdes 5483076Sdes if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) { 5560187Sdes fclose(f); 5660187Sdes _fetch_syserr(); 5760187Sdes } 5860187Sdes 5940975Sdes return f; 6037535Sdes} 6137535Sdes 6237535SdesFILE * 6375891SarchiefetchGetFile(struct url *u, const char *flags) 6463340Sdes{ 6563340Sdes return fetchXGetFile(u, NULL, flags); 6663340Sdes} 6763340Sdes 6863340SdesFILE * 6975891SarchiefetchPutFile(struct url *u, const char *flags) 7037535Sdes{ 7140975Sdes FILE *f; 7240975Sdes 7367892Sdes if (CHECK_FLAG('a')) 7440975Sdes f = fopen(u->doc, "a"); 7540975Sdes else 7660187Sdes f = fopen(u->doc, "w+"); 7740975Sdes 7840975Sdes if (f == NULL) 7940975Sdes _fetch_syserr(); 8060187Sdes 8183076Sdes if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) { 8260187Sdes fclose(f); 8360187Sdes _fetch_syserr(); 8460187Sdes } 8560187Sdes 8640975Sdes return f; 8737535Sdes} 8840975Sdes 8941989Sdesstatic int 9075891Sarchie_fetch_stat_file(const char *fn, struct url_stat *us) 9140975Sdes{ 9240975Sdes struct stat sb; 9340975Sdes 9460584Sdes us->size = -1; 9560584Sdes us->atime = us->mtime = 0; 9641989Sdes if (stat(fn, &sb) == -1) { 9740975Sdes _fetch_syserr(); 9840975Sdes return -1; 9940975Sdes } 10040975Sdes us->size = sb.st_size; 10141862Sdes us->atime = sb.st_atime; 10241862Sdes us->mtime = sb.st_mtime; 10340975Sdes return 0; 10440975Sdes} 10541989Sdes 10641989Sdesint 10783076SdesfetchStatFile(struct url *u, struct url_stat *us, const char *flags __unused) 10841989Sdes{ 10941989Sdes return _fetch_stat_file(u->doc, us); 11041989Sdes} 11141989Sdes 11241989Sdesstruct url_ent * 11383076SdesfetchListFile(struct url *u, const char *flags __unused) 11441989Sdes{ 11541989Sdes DIR *dir; 11641989Sdes struct dirent *de; 11741989Sdes struct url_stat us; 11841989Sdes struct url_ent *ue; 11941989Sdes int size, len; 12077237Sdes char fn[PATH_MAX], *p; 12141989Sdes int l; 12241989Sdes 12341989Sdes if ((dir = opendir(u->doc)) == NULL) { 12441989Sdes _fetch_syserr(); 12541989Sdes return NULL; 12641989Sdes } 12741989Sdes 12841989Sdes ue = NULL; 12941989Sdes strncpy(fn, u->doc, sizeof fn - 2); 13041989Sdes fn[sizeof fn - 2] = 0; 13141989Sdes strcat(fn, "/"); 13241989Sdes p = strchr(fn, 0); 13341989Sdes l = sizeof fn - strlen(fn) - 1; 13441989Sdes 13541989Sdes while ((de = readdir(dir)) != NULL) { 13641989Sdes strncpy(p, de->d_name, l - 1); 13741989Sdes p[l - 1] = 0; 13841989Sdes if (_fetch_stat_file(fn, &us) == -1) 13941989Sdes /* should I return a partial result, or abort? */ 14041989Sdes break; 14141989Sdes _fetch_add_entry(&ue, &size, &len, de->d_name, &us); 14241989Sdes } 14341989Sdes 14441989Sdes return ue; 14541989Sdes} 146