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42415fcb52
PR: kern/171187 Submitted by: Mark Johnston <markjdb@gmail.com> Reviewed by: des Approved by: cperciva MFC after: 2 weeks
156 lines
3.6 KiB
C
156 lines
3.6 KiB
C
/*-
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* Copyright (c) 1998-2011 Dag-Erling Smørgrav
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <dirent.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include "fetch.h"
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#include "common.h"
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FILE *
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fetchXGetFile(struct url *u, struct url_stat *us, const char *flags)
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{
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FILE *f;
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if (us && fetchStatFile(u, us, flags) == -1)
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return (NULL);
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f = fopen(u->doc, "r");
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if (f == NULL) {
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fetch_syserr();
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return (NULL);
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}
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if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) {
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fclose(f);
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fetch_syserr();
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return (NULL);
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}
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fcntl(fileno(f), F_SETFD, FD_CLOEXEC);
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return (f);
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}
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FILE *
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fetchGetFile(struct url *u, const char *flags)
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{
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return (fetchXGetFile(u, NULL, flags));
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}
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FILE *
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fetchPutFile(struct url *u, const char *flags)
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{
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FILE *f;
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if (CHECK_FLAG('a'))
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f = fopen(u->doc, "a");
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else
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f = fopen(u->doc, "w+");
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if (f == NULL) {
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fetch_syserr();
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return (NULL);
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}
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if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) {
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fclose(f);
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fetch_syserr();
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return (NULL);
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}
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fcntl(fileno(f), F_SETFD, FD_CLOEXEC);
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return (f);
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}
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static int
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fetch_stat_file(const char *fn, struct url_stat *us)
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{
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struct stat sb;
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us->size = -1;
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us->atime = us->mtime = 0;
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if (stat(fn, &sb) == -1) {
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fetch_syserr();
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return (-1);
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}
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us->size = sb.st_size;
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us->atime = sb.st_atime;
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us->mtime = sb.st_mtime;
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return (0);
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}
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int
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fetchStatFile(struct url *u, struct url_stat *us, const char *flags __unused)
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{
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return (fetch_stat_file(u->doc, us));
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}
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struct url_ent *
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fetchListFile(struct url *u, const char *flags __unused)
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{
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struct dirent *de;
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struct url_stat us;
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struct url_ent *ue;
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int size, len;
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char fn[PATH_MAX], *p;
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DIR *dir;
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int l;
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if ((dir = opendir(u->doc)) == NULL) {
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fetch_syserr();
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return (NULL);
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}
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ue = NULL;
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strncpy(fn, u->doc, sizeof(fn) - 2);
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fn[sizeof(fn) - 2] = 0;
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strcat(fn, "/");
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p = strchr(fn, 0);
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l = sizeof(fn) - strlen(fn) - 1;
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while ((de = readdir(dir)) != NULL) {
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strncpy(p, de->d_name, l - 1);
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p[l - 1] = 0;
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if (fetch_stat_file(fn, &us) == -1)
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/* should I return a partial result, or abort? */
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break;
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fetch_add_entry(&ue, &size, &len, de->d_name, &us);
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}
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return (ue);
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}
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