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#include <uvh.h>
#include <stdlib.h>
#include "../src/sds.h"
#include <fcntl.h>
#define MAX_CHUNK 1024
struct fileserver
{
sds root;
};
struct chunker
{
uv_fs_t open_req;
uv_fs_t read_req;
struct fileserver *fileserver;
struct uvh_request *req;
sds real_path;
sds req_path;
char buffer[MAX_CHUNK];
};
struct dirreq
{
uv_fs_t readdir_req;
struct fileserver *fileserver;
struct uvh_request *req;
sds real_path;
sds req_path;
};
sds path_join(sds a, sds b)
{
sds result;
if (b[0] == '/')
return sdsdup(b);
result = sdsdup(a);
if (result[sdslen(result)-1] != '/')
result = sdscatlen(result, "/", 1);
return sdscatsds(result, b);
}
void on_readdir(uv_fs_t *req)
{
struct dirreq *dirreq = (struct dirreq *) req->data;
char *buf = (char *) req->ptr;
int i = 0;
uvh_request_writef(dirreq->req, "<html><body><h2>%s</h2><ul>",
dirreq->req_path);
for (i = 0; i < req->result; ++i)
{
sds filename = sdsnew(buf);
sds path = path_join(dirreq->req_path, filename);
uvh_request_writef(dirreq->req, "<li><a href=\"%s\">%s</a></li>",
path, filename);
sdsfree(filename);
sdsfree(path);
buf += strlen(buf) + 1;
}
uvh_request_writef(dirreq->req, "%s", "</ul></body></html>");
uvh_request_end(dirreq->req);
uv_fs_req_cleanup(req);
sdsfree(dirreq->real_path);
sdsfree(dirreq->req_path);
free(dirreq);
}
void handle_dir(struct uvh_request *req, sds req_path, sds real_path)
{
struct dirreq *dirreq = calloc(1, sizeof(*dirreq));
dirreq->fileserver = (struct fileserver *) req->data;
dirreq->req = req;
dirreq->readdir_req.data = dirreq;
dirreq->real_path = real_path;
dirreq->req_path = req_path;
uv_fs_readdir(uv_default_loop(), &dirreq->readdir_req, real_path, O_RDONLY,
&on_readdir);
}
void on_read(uv_fs_t *req)
{
struct chunker *chunker = (struct chunker *) req->data;
uv_fs_req_cleanup(req);
printf("on_read: result: %d\n", (int)req->result);
if (req->result > 0)
{
uvh_request_write(chunker->req, chunker->buffer, req->result);
uv_fs_read(req->loop, &chunker->read_req, chunker->open_req.result,
chunker->buffer, MAX_CHUNK, -1, &on_read);
return;
}
// error or eof
uv_fs_t close_req;
uv_fs_close(req->loop, &close_req, chunker->open_req.result, NULL);
uvh_request_write(chunker->req, NULL, 0);
sdsfree(chunker->req_path);
sdsfree(chunker->real_path);
free(chunker);
}
void on_open(uv_fs_t *req)
{
struct chunker *chunker = (struct chunker *) req->data;
if (req->result == -1)
{
fprintf(stderr, "error opening: %s\n", chunker->real_path);
uvh_request_write_status(chunker->req, HTTP_INTERNAL_SERVER_ERROR);
uvh_request_end(chunker->req);
sdsfree(chunker->req_path);
sdsfree(chunker->real_path);
free(chunker);
}
else
{
// Pass NULL as callback, so we can write chunks when we want to.
// The request is done when an empty chunk is written.
uvh_request_stream(chunker->req, NULL, NULL);
uv_fs_read(req->loop, &chunker->read_req, req->result, chunker->buffer,
MAX_CHUNK, -1, &on_read);
}
uv_fs_req_cleanup(req);
}
void handle_file(struct uvh_request *req, sds req_path, sds real_path)
{
struct chunker *chunker = calloc(1, sizeof(*chunker));
chunker->open_req.data = chunker;
chunker->read_req.data = chunker;
chunker->real_path = real_path;
chunker->req_path = req_path;
chunker->req = req;
chunker->fileserver = (struct fileserver *) req->data;
uv_fs_open(uv_default_loop(), &chunker->open_req, chunker->real_path,
O_RDONLY, 0, &on_open);
}
int request_handler(struct uvh_request *req)
{
printf("%s\n", __FUNCTION__);
struct fileserver *fileserver;
sds real_path;
sds req_path;
fileserver = (struct fileserver *) req->data;
req_path = sdsnew(req->url.path);
sds req_path2 = sdsnew(req_path+1);
real_path = path_join(fileserver->root, req_path2);
sdsfree(req_path2);
printf("req path: %s\n", req_path);
printf("stat: <%s>\n", real_path);
uv_fs_t stat_req;
uv_fs_stat(uv_default_loop(), &stat_req, real_path, NULL);
if (stat_req.result != -1 && S_ISDIR(stat_req.statbuf.st_mode))
{
handle_dir(req, req_path, real_path);
}
else if (stat_req.result != -1 && S_ISREG(stat_req.statbuf.st_mode))
{
handle_file(req, req_path, real_path);
}
else
{
sdsfree(real_path);
sdsfree(req_path);
uvh_request_write_status(req, HTTP_NOT_FOUND);
uvh_request_end(req);
}
uv_fs_req_cleanup(&stat_req);
return 0;
}
void ctrlc_handler(uv_signal_t *handle, int signum)
{
struct uvh_server *server = handle->data;
uvh_server_stop(server);
uv_close((uv_handle_t *) handle, NULL);
(void) signum;
}
int main(int argc, char **argv)
{
uv_signal_t sig;
struct fileserver fileserver;
struct uvh_server *server;
if (argc != 2)
{
printf("usage: %s document-root\n", argv[0]);
return 1;
}
memset(&fileserver, 0, sizeof(fileserver));
fileserver.root = sdsnew(argv[1]);
server = uvh_server_init(uv_default_loop(), &fileserver, &request_handler);
if (!server)
goto error;
if (uvh_server_listen(server, "127.0.0.1", 9898))
goto error;
uv_signal_init(uv_default_loop(), &sig);
sig.data = server;
uv_signal_start(&sig, &ctrlc_handler, SIGINT);
printf("root: %s\n", fileserver.root);
uv_run(uv_default_loop(), UV_RUN_DEFAULT);
printf("done\n");
uvh_server_free(server);
sdsfree(fileserver.root);
return 0;
error:
fprintf(stderr, "error: %s\n",
uv_strerror(uv_last_error(uv_default_loop())));
return 1;
}
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