libuhttpd/example/handler.c

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/*
* MIT License
*
* Copyright (c) 2019 Jianhui Zhao <zhaojh329@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include "uhttpd.h"
void default_handler(struct uh_connection *conn, int event)
{
if (event != UH_EV_COMPLETE)
return;
conn->serve_file(conn);
}
void echo_handler(struct uh_connection *conn, int event)
{
if (event == UH_EV_COMPLETE) {
struct uh_str path = conn->get_path(conn);
struct uh_str query = conn->get_query(conn);
struct uh_str ua = conn->get_header(conn, "User-Agent");
struct uh_str body = conn->get_body(conn);
conn->send_head(conn, HTTP_STATUS_OK, -1, NULL);
conn->chunk_printf(conn, "I'm Libuhttpd: %s\n", UHTTPD_VERSION_STRING);
conn->chunk_printf(conn, "Method: %s\n", conn->get_method_str(conn));
conn->chunk_printf(conn, "Path: %.*s\n", (int)path.len ,path.p);
conn->chunk_printf(conn, "Query: %.*s\n", (int)query.len, query.p);
conn->chunk_printf(conn, "User-Agent: %.*s\n", (int)ua.len, ua.p);
conn->chunk_printf(conn, "Body: %.*s\n", (int)body.len, body.p);
conn->chunk_end(conn);
conn->done(conn);
}
}
void upload_handler(struct uh_connection *conn, int event)
{
if (event == UH_EV_HEAD_COMPLETE) {
struct uh_str str = conn->get_header(conn, "Content-Length");
int content_length;
char buf[128];
sprintf(buf, "%.*s\n", (int)str.len, str.p);
content_length = atoi(buf);
if (content_length > 1024 * 1024 * 1024) {
conn->error(conn, HTTP_STATUS_INTERNAL_SERVER_ERROR, "Too big");
return;
}
conn->userdata = (void *)(intptr_t)-1;
} if (event == UH_EV_BODY) {
struct uh_str body = conn->extract_body(conn);
int fd = (intptr_t)conn->userdata;
if (fd < 0) {
fd = open("upload.bin", O_RDWR | O_CREAT | O_TRUNC, 0644);
if (fd < 0) {
conn->error(conn, HTTP_STATUS_INTERNAL_SERVER_ERROR, strerror(errno));
return;
}
}
if (write(fd, body.p, body.len) < 0) {
conn->error(conn, HTTP_STATUS_INTERNAL_SERVER_ERROR, strerror(errno));
close(fd);
return;
}
conn->userdata = (void *)(intptr_t)fd;
} else if (event == UH_EV_COMPLETE) {
int fd = (intptr_t)conn->userdata;
struct stat st;
size_t size = 0;
conn->send_head(conn, HTTP_STATUS_OK, -1, NULL);
if (fd > 0) {
fstat(fd, &st);
close(fd);
fd = -1;
size = st.st_size;
}
conn->chunk_printf(conn, "Upload size: %zd\n", size);
conn->chunk_end(conn);
conn->done(conn);
}
}