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-rw-r--r--lib/libfetch/file.c145
1 files changed, 145 insertions, 0 deletions
diff --git a/lib/libfetch/file.c b/lib/libfetch/file.c
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+++ b/lib/libfetch/file.c
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+/*-
+ * Copyright (c) 1998-2004 Dag-Erling Coïdan Smørgrav
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer
+ * in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <dirent.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "fetch.h"
+#include "common.h"
+
+FILE *
+fetchXGetFile(struct url *u, struct url_stat *us, const char *flags)
+{
+ FILE *f;
+
+ if (us && fetchStatFile(u, us, flags) == -1)
+ return (NULL);
+
+ f = fopen(u->doc, "r");
+
+ if (f == NULL)
+ _fetch_syserr();
+
+ if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) {
+ fclose(f);
+ _fetch_syserr();
+ }
+
+ return (f);
+}
+
+FILE *
+fetchGetFile(struct url *u, const char *flags)
+{
+ return (fetchXGetFile(u, NULL, flags));
+}
+
+FILE *
+fetchPutFile(struct url *u, const char *flags)
+{
+ FILE *f;
+
+ if (CHECK_FLAG('a'))
+ f = fopen(u->doc, "a");
+ else
+ f = fopen(u->doc, "w+");
+
+ if (f == NULL)
+ _fetch_syserr();
+
+ if (u->offset && fseeko(f, u->offset, SEEK_SET) == -1) {
+ fclose(f);
+ _fetch_syserr();
+ }
+
+ return (f);
+}
+
+static int
+_fetch_stat_file(const char *fn, struct url_stat *us)
+{
+ struct stat sb;
+
+ us->size = -1;
+ us->atime = us->mtime = 0;
+ if (stat(fn, &sb) == -1) {
+ _fetch_syserr();
+ return (-1);
+ }
+ us->size = sb.st_size;
+ us->atime = sb.st_atime;
+ us->mtime = sb.st_mtime;
+ return (0);
+}
+
+int
+fetchStatFile(struct url *u, struct url_stat *us, const char *flags)
+{
+ return (_fetch_stat_file(u->doc, us));
+}
+
+struct url_ent *
+fetchListFile(struct url *u, const char *flags)
+{
+ struct dirent *de;
+ struct url_stat us;
+ struct url_ent *ue;
+ int size, len;
+ char fn[PATH_MAX], *p;
+ DIR *dir;
+ int l;
+
+ if ((dir = opendir(u->doc)) == NULL) {
+ _fetch_syserr();
+ return (NULL);
+ }
+
+ ue = NULL;
+ strncpy(fn, u->doc, sizeof(fn) - 2);
+ fn[sizeof(fn) - 2] = 0;
+ strcat(fn, "/");
+ p = strchr(fn, 0);
+ l = sizeof(fn) - strlen(fn) - 1;
+
+ while ((de = readdir(dir)) != NULL) {
+ strncpy(p, de->d_name, l - 1);
+ p[l - 1] = 0;
+ if (_fetch_stat_file(fn, &us) == -1)
+ /* should I return a partial result, or abort? */
+ break;
+ _fetch_add_entry(&ue, &size, &len, de->d_name, &us);
+ }
+
+ return (ue);
+}