added basic structure

1 files changed, 149 insertions, 0 deletions

diff --git a/libfetch/file.c b/libfetch/file.c
new file mode 100644
index 0000000..8569ff3
--- /dev/null
+++ b/libfetch/file.c
@@ -0,0 +1,149 @@
+/*-
+ * Copyright (c) 1998-2011 Dag-Erling 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>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <dirent.h>
+#include <fcntl.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();
+	}
+
+	fcntl(fileno(f), F_SETFD, FD_CLOEXEC);
+	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();
+	}
+
+	fcntl(fileno(f), F_SETFD, FD_CLOEXEC);
+	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 __unused)
+{
+	return (fetch_stat_file(u->doc, us));
+}
+
+struct url_ent *
+fetchListFile(struct url *u, const char *flags __unused)
+{
+	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);
+}