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* MODIFY [LICENSE] Opensource LICENSE updated

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jaylin@emqx.io
2020-09-03 18:11:35 +08:00
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201
LICENSE
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@ -1,201 +0,0 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
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21
LICENSE.txt Normal file
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@ -0,0 +1,21 @@
The MIT License
Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
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.

8
nanolib/hash.cc
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@ -1,3 +1,11 @@
//
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include <unordered_map>
#include <cstring>
#include <mutex>

9
nanolib/mqtt_db.c
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@ -1,3 +1,12 @@
//
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include <string.h>
#include <assert.h>

41
nanolib/zmalloc.c
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@ -1,36 +1,11 @@
/* zmalloc - total amount of allocated memory aware version of malloc()
*
* Copyright (c) 2009-2010, Salvatore Sanfilippo <antirez at gmail dot com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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.
*/
/*
** Remove pthread by Ery Lee
*/
//
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include <stdio.h>
#include <stdlib.h>

2
nanomq/CMakeLists.txt
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@ -30,7 +30,7 @@ find_package(nanolib CONFIG REQUIRED)
# MESSAGE(FATAL_ERROR "nanolib library not found")
add_executable(nanomq nanomq.c cmd.c file.c process.c apps.c pub_handler.c sub_handler.c unsub_handler.c)
add_executable(nanomq nanomq.c cmd.c process.c apps.c pub_handler.c sub_handler.c unsub_handler.c)
#target_link_libraries(nanomq apps nano_shared)
target_link_libraries(nanomq apps nanolib)

8
nanomq/apps.c
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@ -1,3 +1,11 @@
//
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include "include/apps.h"
#include "broker.h"

8
nanomq/apps/broker.c
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@ -1,3 +1,11 @@
//
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

8
nanomq/apps/mq.c
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@ -1,3 +1,11 @@
//
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include "mq.h"
#include "include/nanomq.h"

9
nanomq/cmd.c
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@ -1,7 +1,14 @@
//
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include "include/nanomq.h"
#include "include/cmd.h"
#include "include/file.h"
#include <unistd.h>
#include <stdio.h>

17
nanomq/emq_parser.c
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@ -1,10 +1,9 @@
/**
* static MQTT parser lib
*
*
*
*
*
*
*/
//
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//

536
nanomq/file.c
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@ -1,536 +0,0 @@
/***
*
***/
#include "include/nanomq.h"
#include "include/file.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <mtd/mtd-user.h>
#include <sys/ioctl.h>
#define MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)
static char fpath_tmp[100];
int file_trunc_to_zero(const char *fpath)
{
int fd;
debug_msg("fpath = %s\n", fpath);
fd = open(fpath, O_WRONLY | O_CREAT | O_TRUNC, MODE);
if (fd >= 0)
close(fd);
return 0;
}
/*return 1 if exists*/
int file_exists(const char *fpath)
{
struct stat st;
int ret;
ret = stat(fpath, &st) == 0 ? 1 : 0;
debug_msg("%s: %i", fpath, ret);
return ret;
}
int file_is_symlink(const char *fpath)
{
int ret;
struct stat st;
ret = lstat(fpath, &st);
if (ret != 0)
return 0;
return S_ISLNK(st.st_mode);
}
int file_size(const char *fpath)
{
int ret;
struct stat st;
if (!file_exists(fpath))
return 0;
ret = stat(fpath, &st);
if (ret != 0)
return -1;
return st.st_size;
}
int file_create_symlink(const char *file_path, const char *link_path)
{
debug_msg("%s => %s", file_path, link_path);
return symlink(file_path, link_path);
}
int file_read_int(const char *fpath_fmt, ...)
{
va_list args;
char buff[10];
int fd, ret = 0;
va_start(args, fpath_fmt);
vsnprintf(fpath_tmp, sizeof(fpath_tmp), fpath_fmt, args);
va_end(args);
if (!file_exists(fpath_tmp))
goto out;
fd = open(fpath_tmp, O_RDONLY);
if (fd < 0)
goto out;
ret = read(fd, buff, sizeof(buff));
if (ret < 0)
goto close;
ret = strtol(buff, (char **)NULL, 10);
debug_msg("fpath = %s, pid = %d", fpath_tmp, ret);
close:
close(fd);
out:
return ret;
}
int file_read_string(const char *fpath, char *buff, int buff_len)
{
int fd, ret = 0;
if (!file_exists(fpath))
goto out;
fd = open(fpath, O_RDONLY);
if (fd < 0)
goto out;
ret = read(fd, buff, buff_len);
if (ret < 0)
goto close;
if (ret > 0)
buff[ret - 1] = '\0';
debug_msg("fpath = %s, string = %s", fpath, buff);
close:
close(fd);
out:
return ret;
}
int file_delete(const char *fpath)
{
if (!fpath)
return 0;
debug_msg("%s", fpath);
return unlink(fpath);
}
int file_create_dir(const char *fpath)
{
char *last_slash = NULL, *fpath_edit = NULL;
int ret = -1;
debug_msg("dir = %s", fpath);
if (fpath[strlen(fpath) - 1] != '/') {
fpath_edit = malloc(strlen(fpath) + 1);
if (!fpath_edit)
return -1;
strncpy(fpath_edit, fpath, strlen(fpath) + 1);
fpath_edit[strlen(fpath)] = '\0';
last_slash = strrchr(fpath_edit, '/');
/* not a single slash in the string ? */
if (!last_slash)
goto out;
*last_slash = '\0';
fpath = fpath_edit;
}
debug_msg("mkdir = %s", fpath);
ret = mkdir(fpath, 0777);
out:
free(fpath_edit);
return ret;
}
int file_write_int(int val, const char *fpath_fmt, ...)
{
int fd;
va_list args;
char buff[10], buff_len;
if (!fpath_fmt)
goto out;
va_start(args, fpath_fmt);
vsnprintf(fpath_tmp, sizeof(fpath_tmp), fpath_fmt, args);
va_end(args);
debug_msg("fpath = %s, int = %i", fpath_tmp, val);
buff_len = sprintf(buff, "%i\n", val);
fd = open(fpath_tmp, O_CREAT | O_WRONLY | O_TRUNC, MODE);
if (fd < 0) {
debug_msg("Error - can't open file '%s' to write pid: %s",
fpath_tmp, strerror(errno));
goto error;
}
write(fd, buff, buff_len);
close(fd);
return 1;
out:
return 0;
error:
return -1;
}
int file_write_string(const char *fpath, const char *string)
{
int fd;
if (!fpath)
goto out;
debug_msg("fpath = %s, string = '%s'", fpath, string);
fd = open(fpath, O_CREAT | O_WRONLY | O_TRUNC, MODE);
if (fd < 0) {
debug_msg("Error - can't open file '%s' to write string: %s",
fpath, strerror(errno));
goto error;
}
write(fd, string, strlen(string));
close(fd);
return 1;
out:
return 0;
error:
return -1;
}
int file_append_string(const char *fpath, const char *string_fmt, ...)
{
va_list args;
char string[100];
int fd;
if (!fpath)
goto out;
debug_msg("string_fmt = %s", string_fmt);
va_start(args, string_fmt);
vsnprintf(string, sizeof(string), string_fmt, args);
string[sizeof(string)-1] = '\0';
va_end(args);
debug_msg("fpath = %s, string = %s", fpath, string);
fd = open(fpath, O_CREAT | O_WRONLY | O_APPEND, MODE);
if (fd < 0) {
debug_msg("Error - can't open file '%s' to append string: '%s'",
fpath, strerror(errno));
goto error;
}
write(fd, string, strlen(string));
close(fd);
return 1;
out:
return 0;
error:
return -1;
}
char *file_find_line(const char *fpath, const char *string)
{
char *line_ptr = NULL, *ptr;
FILE *fd;
size_t len = 0;
debug_msg("fpath = %s, string = %s", fpath, string);
if (!fpath)
goto out;
if (!string)
goto out;
fd = fopen(fpath, "r");
if (!fd)
goto out;
while (getline(&line_ptr, &len, fd) != -1) {
ptr = strcasestr(line_ptr, string);
if (!ptr)
continue;
goto found;
}
free(line_ptr);
fclose(fd);
out:
return NULL;
found:
fclose(fd);
return line_ptr;
}
int file_read_symlink_target(const char *fpath, char *buff, int buff_len)
{
int ret;
if (!file_is_symlink(fpath))
return -1;
memset(buff, 0, buff_len);
ret = readlink(fpath, buff, buff_len);
if (ret < 0)
return ret;
debug_msg("file %s links to %s", fpath, buff);
return 0;
}
int file_delete_symlink_target(const char *fpath)
{
int ret;
char path_buff[100];
ret = file_read_symlink_target(fpath, path_buff, sizeof(path_buff));
if (ret < 0)
return ret;
debug_msg("file %s", path_buff);
return file_delete(path_buff);
}
int file_is_directory(const char *fpath)
{
int ret;
struct stat st;
ret = lstat(fpath, &st);
if (ret != 0)
return 0;
debug_msg("fpath = %s, is_directory = %d", fpath, S_ISDIR(st.st_mode));
return S_ISDIR(st.st_mode);
}
int file_read_bin(const char *fpath, unsigned char **buff,
unsigned int offset, unsigned int length)
{
int fd, ret = 0;
if (!file_exists(fpath))
goto out;
fd = open(fpath, O_RDONLY);
if (fd < 0)
goto out;
*buff = malloc(length + 1);
if (!*buff)
goto close;
lseek(fd, offset, SEEK_SET);
ret = read(fd, *buff, length);
if (ret < 0)
goto close;
/*if (ret > 1)
*buff[ret - 1] = '\0';*/
debug_msg("fpath = %s, offset = %u, length = %u", fpath, offset,
length);
close:
close(fd);
out:
return ret;
}
unsigned int file_mtd_size_get(const char *fpath)
{
mtd_info_t mtd_info;
unsigned int res = 0;
int fd, ret;
debug_msg("fpath = %s", fpath);
if (!fpath)
goto out;
fd = open(fpath, O_RDONLY);
if (fd < 0)
goto out;
ret = ioctl(fd, MEMGETINFO, &mtd_info);
if (ret < 0)
goto out_close;
res = mtd_info.size;
out_close:
close(fd);
out:
return res;
}
int file_mtd_write(const char *fpath, unsigned char *buff, unsigned int buff_len)
{
mtd_info_t mtd_info;
erase_info_t ei;
unsigned int res = 0;
int fd, ret;
debug_msg("fpath = %s", fpath);
if (!fpath)
goto out;
fd = open(fpath, O_RDWR);
if (fd < 0)
goto out;
ret = ioctl(fd, MEMGETINFO, &mtd_info);
if (ret < 0)
goto out_close;
ei.length = mtd_info.erasesize;
for (ei.start = 0; ei.start < mtd_info.size; ei.start += mtd_info.erasesize) {
ioctl(fd, MEMUNLOCK, &ei);
ioctl(fd, MEMERASE, &ei);
}
res = write(fd, buff, buff_len);
out_close:
close(fd);
out:
return res;
}
int file_truncr_to_sep(const char *fpath, char *separator)
{
int fd, read_len;
FILE *fd_tmp;
char *line_ptr = NULL;
size_t line_len = 0, trunc_len = 0, trunc_len_tmp = 0;
debug_msg("fpath = %s, separator = %s", fpath, separator);
fd_tmp = fopen(fpath, "r");
if (!fd_tmp)
goto write_sep;
while ((read_len = getline(&line_ptr, &line_len, fd_tmp)) != -1) {
if (strncmp(line_ptr, separator, strlen(separator)) == 0) {
trunc_len += trunc_len_tmp;
trunc_len_tmp = 0;
}
trunc_len_tmp += read_len;
}
fclose(fd_tmp);
free(line_ptr);
write_sep:
fd = open(fpath, O_RDWR | O_CREAT, MODE);
if (fd < 0)
return -1;
ftruncate(fd, trunc_len);
lseek(fd, trunc_len, SEEK_SET);
dprintf(fd, "%s\n", separator);
return fd;
}
int file_extract_int(const char *fpath)
{
char buff[16], *ptr;
int ret = 0;
if (!file_exists(fpath))
goto out;
file_read_string(fpath, buff, sizeof(buff));
ptr = strpbrk(buff, "0123456789");
if (!ptr)
ptr = buff;
ret = strtol(ptr, (char **)NULL, 10);
debug_msg("fpath = %s, int = %d", fpath, ret);
out:
return ret;
}
int file_append_int(const char *fpath, int value)
{
int fd;
char buff[10], buff_len;
if (!fpath)
goto out;
buff_len = sprintf(buff, "%i\n", value);
fd = open(fpath, O_CREAT | O_WRONLY | O_APPEND, MODE);
if (fd < 0) {
debug_msg("Error - can't open file '%s' to append string: %s",
fpath, strerror(errno));
goto error;
}
write(fd, buff, buff_len);
close(fd);
return 1;
out:
return 0;
error:
return -1;
}

26
nanomq/include/file.h
View File

@ -1,26 +0,0 @@
int file_trunc_to_zero(const char *fpath);
int file_exists(const char *fpath);
int file_is_symlink(const char *fpath);
int file_size(const char *fpath);
int file_create_symlink(const char *file_path, const char *link_path);
int file_read_int(const char *fpath_fmt, ...);
int file_read_string(const char *fpath, char *buff, int buff_len);
int file_delete(const char *fpath);
int file_read_symlink_target(const char *fpath, char *buff, int buff_len);
int file_delete_symlink_target(const char *fpath);
int file_create_dir(const char *fpath);
int file_write_int(int val, const char *fpath_fmt, ...);
int file_write_string(const char *fpath, const char *string);
int file_append_string(const char *fpath, const char *string_fmt, ...);
char *file_find_line(const char *fpath, const char *string);
int file_is_directory(const char *fpath);
int file_read_bin(const char *fpath, unsigned char **buff,
unsigned int offset, unsigned int length);
unsigned int file_mtd_size_get(const char *fpath);
int file_mtd_write(const char *fpath, unsigned char *buff,
unsigned int buff_len);
int file_truncr_to_sep(const char *fpath, char *separator);
int file_append_int(const char *fpath, int value);
int file_extract_int(const char *fpath);

5
nanomq/include/packet.h
View File

@ -1,8 +1,3 @@
//
// Copyright 2020 Staysail Systems, Inc. <info@staysail.tech>
// Copyright 2018 Capitar IT Group BV <info@capitar.com>
// Copyright 2019 Devolutions <info@devolutions.net>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be

9
nanomq/nanomq.c
View File

@ -1,3 +1,12 @@
//
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include "include/apps.h"
#include "include/version.h"
#include "include/process.h"

8
nanomq/process.c
View File

@ -1,3 +1,11 @@
//
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include "include/nanomq.h"

11
nanomq/pub_handler.c
View File

@ -1,6 +1,11 @@
/**
* Created by Alvin on 2020/7/25.
*/
//
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include <stdio.h>

8
nanomq/sub_handler.c
View File

@ -1,3 +1,11 @@
//
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include <nng.h>
#include <nanolib.h>
#include <protocol/mqtt/mqtt_parser.h>

8
nanomq/unsub_handler.c
View File

@ -1,3 +1,11 @@
//
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include <nng.h>
#include <nanolib.h>
#include <protocol/mqtt/mqtt_parser.h>

201
nng/LICENSE
View File

@ -1,201 +0,0 @@
Apache License
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replaced with your own identifying information. (Don't include
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2
nng/Makefile
View File

@ -1,4 +1,4 @@
#Not finish yet
include config.mk
export EMQ_DEBUG=

11
nng/include/nng/protocol/mqtt/mqtt.h
View File

@ -1,6 +1,11 @@
/*
TODO rewrite whole file
*/
//
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#ifndef MQTT_PROTOCOL_H
#define MQTT_PROTOCOL_H

0
nng/include/nng/protocol/mqtt/mqtt_5.h
View File

3
nng/include/nng/protocol/mqtt/nano_tcp.h
View File

@ -1,6 +1,5 @@
//
// Copyright 2020 Staysail Systems, Inc. <info@staysail.tech>
// Copyright 2018 Capitar IT Group BV <info@capitar.com>
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this

18
nng/src/protocol/mqtt/mqtt_parser.c
View File

@ -1,13 +1,11 @@
/***
* Jaylin
* EMQ
*
*
*
*
* MIT
*
**/
//
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include <stdio.h>
#include <string.h>

7
nng/src/protocol/reqrep0/nano_tcp.c
View File

@ -1,5 +1,10 @@
//
// 2020 Jaylin EMQX
// Copyright 2020 NanoMQ Team, Inc. <jaylin@emqx.io>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include <string.h>