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#define FUSE_USE_VERSION 26

#include <sys/types.h>
#include <sqlite3.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <fuse.h>
#include <tcl.h>

#define APPFS_CACHEDIR "/tmp/appfs-cache"
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	char name[256];
};

struct appfs_pathinfo {
	appfs_pathtype_t type;
	time_t time;
	char hostname[256];
	union {
		struct {
			int childcount;
		} dir;
		struct {
			int executable;
			off_t size;
			char sha1[41];
		} file;
	} typeinfo;
};

static appfs_os_t appfs_convert_os_fromString(const char *os) {
	if (strcasecmp(os, "Linux") == 0) {
		return(APPFS_OS_LINUX);
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		return(-1);
	}

	return(0);
}

static int appfs_getfile(const char *hostname, const char *sha1) {
	return(0);
static const char *appfs_getfile(const char *hostname, const char *sha1) {
	char *retval;
	int tcl_ret;

	tcl_ret = appfs_Tcl_Eval(globalThread.interp, 3, "::appfs::download", hostname, sha1);
	if (tcl_ret != TCL_OK) {
		APPFS_DEBUG("Call to ::appfs::download failed: %s", Tcl_GetStringResult(globalThread.interp));

		return(NULL);
	}

	retval = strdup(Tcl_GetStringResult(globalThread.interp));

	return(retval);
}

static int appfs_update_manifest(const char *hostname, const char *sha1) {
	int tcl_ret;

	tcl_ret = appfs_Tcl_Eval(globalThread.interp, 3, "::appfs::getpkgmanifest", hostname, sha1);
	if (tcl_ret != TCL_OK) {
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		if (!size) {
			size = "0";
		}

		if (!perms) {
			perms = "";
		}

		if (!sha1) {
			sha1 = "";
		}

		pathinfo->typeinfo.file.size = strtoull(size, NULL, 10);
		snprintf(pathinfo->typeinfo.file.sha1, sizeof(pathinfo->typeinfo.file.sha1), "%s", sha1);

		if (strcmp(perms, "x") == 0) {
			pathinfo->typeinfo.file.executable = 1;
		} else {
			pathinfo->typeinfo.file.executable = 0;
		}
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	if (_path[1] == '\0') {
		/* Request for the root directory */
		sites = appfs_getsites(&sites_count);

		pathinfo->type = APPFS_PATHTYPE_DIRECTORY;
		pathinfo->typeinfo.dir.childcount = sites_count;
		pathinfo->hostname[0] = '\0';

		if (children) {
			for (site = sites; site; site = site->_next) {
				node = (void *) ckalloc(sizeof(*node));
				node->_next = *children;
				strcpy(node->name, site->name);
				*children = node;
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	hostname = path + 1;
	packagename = strchr(hostname, '/');

	if (packagename != NULL) {
		*packagename = '\0';
		packagename++;
	}

	snprintf(pathinfo->hostname, sizeof(pathinfo->hostname), "%s", hostname);

	packages = appfs_getindex(hostname, &packages_count);

	if (packages == NULL || packages_count == 0) {
		APPFS_DEBUG("Unable to fetch package index from %s", hostname);

		free(path_s);
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	memset(stbuf, 0, sizeof(struct stat));

	stbuf->st_mtime = pathinfo.time;
	stbuf->st_ctime = pathinfo.time;
	stbuf->st_atime = pathinfo.time;

	if (pathinfo.type == APPFS_PATHTYPE_DIRECTORY) {
		stbuf->st_mode = S_IFDIR | 0755;
		stbuf->st_mode = S_IFDIR | 0555;
		stbuf->st_nlink = 2 + pathinfo.typeinfo.dir.childcount;
	} else {
		if (pathinfo.typeinfo.file.executable) {
			stbuf->st_mode = S_IFREG | 0755;
			stbuf->st_mode = S_IFREG | 0555;
		} else {
			stbuf->st_mode = S_IFREG | 0644;
			stbuf->st_mode = S_IFREG | 0444;
		}

		stbuf->st_nlink = 1;
		stbuf->st_size = pathinfo.typeinfo.file.size;
	}

	return res;
}

static int appfs_fuse_readdir(const char *path, void *buf, fuse_fill_dir_t filler, off_t offset, struct fuse_file_info *fi) {
	struct appfs_pathinfo pathinfo;
	struct appfs_children *children, *child;
	int res;
	int retval;

	APPFS_DEBUG("Enter (path = %s, ...)", path);

	res = appfs_get_path_info(path, &pathinfo, &children);
	if (res != 0) {
		return(res);
	retval = appfs_get_path_info(path, &pathinfo, &children);
	if (retval != 0) {
		return(retval);
	}

	filler(buf, ".", NULL, 0);
	filler(buf, "..", NULL, 0);

	for (child = children; child; child = child->_next) {
		filler(buf, child->name, NULL, 0);
	}

	appfs_free_list_children(children);

	return 0;
	return(0);
}

static int appfs_fuse_open(const char *path, struct fuse_file_info *fi) {
	struct appfs_pathinfo pathinfo;
	const char *real_path;
	int fh;
	int gpi_ret;

	APPFS_DEBUG("Enter (path = %s, ...)", path);

	if ((fi->flags & 3) != O_RDONLY) {
                return(-EACCES);
	}

	gpi_ret = appfs_get_path_info(path, &pathinfo, NULL);
	if (gpi_ret != 0) {
		return(gpi_ret);
	}

	if (pathinfo.type == APPFS_PATHTYPE_DIRECTORY) {
		return(-EISDIR);
	}

	real_path = appfs_getfile(pathinfo.hostname, pathinfo.typeinfo.file.sha1);
	if (real_path == NULL) {
	return(-ENOENT);
}
		return(-EIO);
	}

	fh = open(real_path, O_RDONLY);
	free((void *) real_path);
	if (fh < 0) {
		return(-EIO);
	}

	fi->fh = fh;

	return(0);
}

static int appfs_fuse_read(const char *path, char *buf, size_t size, off_t offset, struct fuse_file_info *fi) {
	off_t lseek_ret;
	ssize_t read_ret;

	APPFS_DEBUG("Enter (path = %s, ...)", path);

	lseek_ret = lseek(fi->fh, offset, SEEK_SET);
	if (lseek_ret != offset) {
	return(-ENOENT);
		return(-EIO);
	}

	read_ret = read(fi->fh, buf, size);

	return(read_ret);
}

#ifdef APPFS_TEST_DRIVER
static int appfs_test_driver(void) {
	struct appfs_site *sites, *site;
	struct appfs_package *packages, *package;
	struct appfs_children *files, *file;
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