kingkevin
/
espressif_idf-extra-components
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

pcap: Add PCAP component

This commit is contained in:
Tomas Rezucha 2022-05-02 16:11:36 +02:00
parent 19caa3451a
commit ff354a61da
8 changed files with 567 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
.github/workflows/upload_component.yml vendored
View File

@ -15,6 +15,6 @@ jobs:
- name: Upload components to component service
uses: espressif/github-actions/upload_components@master
with:
directories: "cbor;jsmn;libsodium;pid_ctrl;qrcode;nghttp;sh2lib;expat;esp_encrypted_img;coap"
directories: "cbor;jsmn;libsodium;pid_ctrl;qrcode;nghttp;sh2lib;expat;esp_encrypted_img;coap;pcap"
namespace: "espressif"
api_token: ${{ secrets.IDF_COMPONENT_API_TOKEN }}

2
pcap/CMakeLists.txt Normal file
View File

@ -0,0 +1,2 @@
idf_component_register(SRCS "src/pcap.c"
INCLUDE_DIRS "include")

202
pcap/LICENSE Normal file
View File

@ -0,0 +1,202 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright [yyyy] [name of copyright owner]
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

5
pcap/README.md Normal file
View File

@ -0,0 +1,5 @@
# Simple PCAP file writer
This component allows users to trace their captured packets in .pcap file format.
More details about PCAP format can be found [here](https://wiki.wireshark.org/Development/LibpcapFileFormat).

5
pcap/idf_component.yml Normal file
View File

@ -0,0 +1,5 @@
version: "1.0.0"
description: PCAP file writer
url: https://github.com/espressif/idf-extra-components/tree/master/pcap
dependencies:
idf: ">=4.4"

128
pcap/include/pcap.h Normal file
View File

@ -0,0 +1,128 @@
/*
* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include <stdio.h>
#include "esp_err.h"
#ifdef __cplusplus
extern "C" {
#endif
#define PCAP_DEFAULT_VERSION_MAJOR 0x02 /*!< Major Version */
#define PCAP_DEFAULT_VERSION_MINOR 0x04 /*!< Minor Version */
#define PCAP_DEFAULT_TIME_ZONE_GMT 0x00 /*!< Time Zone */
/**
* @brief Type of pcap file handle
*
*/
typedef struct pcap_file_t *pcap_file_handle_t;
/**
* @brief Link layer Type Definition, used for Pcap reader to decode payload
*
*/
typedef enum {
PCAP_LINK_TYPE_LOOPBACK = 0, /*!< Loopback devices, except for later OpenBSD */
PCAP_LINK_TYPE_ETHERNET = 1, /*!< Ethernet, and Linux loopback devices */
PCAP_LINK_TYPE_TOKEN_RING = 6, /*!< 802.5 Token Ring */
PCAP_LINK_TYPE_ARCNET = 7, /*!< ARCnet */
PCAP_LINK_TYPE_SLIP = 8, /*!< SLIP */
PCAP_LINK_TYPE_PPP = 9, /*!< PPP */
PCAP_LINK_TYPE_FDDI = 10, /*!< FDDI */
PCAP_LINK_TYPE_ATM = 100, /*!< LLC/SNAP encapsulated ATM */
PCAP_LINK_TYPE_RAW_IP = 101, /*!< Raw IP, without link */
PCAP_LINK_TYPE_BSD_SLIP = 102, /*!< BSD/OS SLIP */
PCAP_LINK_TYPE_BSD_PPP = 103, /*!< BSD/OS PPP */
PCAP_LINK_TYPE_CISCO_HDLC = 104, /*!< Cisco HDLC */
PCAP_LINK_TYPE_802_11 = 105, /*!< 802.11 */
PCAP_LINK_TYPE_BSD_LOOPBACK = 108, /*!< OpenBSD loopback devices(with AF_value in network byte order) */
PCAP_LINK_TYPE_LOCAL_TALK = 114 /*!< LocalTalk */
} pcap_link_type_t;
/**
* @brief Pcap configuration Type Definition
*
*/
typedef struct {
FILE *fp; /*!< Pointer to a standard file handle */
unsigned int major_version; /*!< Pcap version: major */
unsigned int minor_version; /*!< Pcap version: minor */
unsigned int time_zone; /*!< Pcap timezone code */
struct {
unsigned int little_endian: 1; /*!< Whether the pcap file is recored in little endian format */
} flags;
} pcap_config_t;
/**
* @brief Create a new pcap session, and returns pcap file handle
*
* @note This function won't create the low level FILE* object, the user should take care of the creation of the File Stream.
*
* @param[in] config pcap file configuration
* @param[out] ret_pcap Returned pcap file handle
* @return
* - ESP_OK: Create pcap file successfully
* - ESP_ERR_INVALID_ARG: Create pcap file failed because of invalid argument
* - ESP_ERR_NO_MEM: Create pcap file failed because out of memory
* - ESP_FAIL: Create pcap file failed
*/
esp_err_t pcap_new_session(const pcap_config_t *config, pcap_file_handle_t *ret_pcap);
/**
* @brief Delete the pcap session, and close the File Stream
*
* @param[in] pcap pcap file handle created by `pcap_new_session()`
* @return
* - ESP_OK: Delete pcap session successfully
* - ESP_ERR_INVALID_ARG: Delete pcap session failed because of invalid argument
* - ESP_FAIL: Delete pcap session failed
*/
esp_err_t pcap_del_session(pcap_file_handle_t pcap);
/**
* @brief Write pcap file header
*
* @param[in] pcap pcap file handle created by `pcap_new_session()`
* @param[in] link_type Network link layer type
* @return
* - ESP_OK: Write pcap file header successfully
* - ESP_ERR_INVALID_ARG: Write pcap file header failed because of invalid argument
* - ESP_FAIL: Write pcap file header failed
*/
esp_err_t pcap_write_header(pcap_file_handle_t pcap, pcap_link_type_t link_type);
/**
* @brief Capture one packet into pcap file
*
* @param[in] pcap pcap file handle created by `pcap_new_session()`
* @param[in] payload pointer of the captured data buffer
* @param[in] length length of captured data buffer
* @param[in] seconds second of capture time
* @param[in] microseconds microsecond of capture time
* @return
* - ESP_OK: Write network packet into pcap file successfully
* - ESP_ERR_INVALID_ARG: Write network packet into pcap file failed because of invalid argument
* - ESP_FAIL: Write network packet into pcap file failed
*/
esp_err_t pcap_capture_packet(pcap_file_handle_t pcap, void *payload, uint32_t length, uint32_t seconds, uint32_t microseconds);
/**
* @brief Print the summary of pcap file into stream
*
* @param[in] pcap pcap file handle created by `pcap_new_session()`
* @param[in] print_file the file stream to save the summary
* @return
* - ESP_OK: Print pcap file summary successfully
* - ESP_ERR_INVALID_ARG: Print pcap file summary failed because of invalid argument
* - ESP_FAIL: Print pcap file summary failed
*/
esp_err_t pcap_print_summary(pcap_file_handle_t pcap, FILE *print_file);
#ifdef __cplusplus
}
#endif

223
pcap/src/pcap.c Normal file
View File

@ -0,0 +1,223 @@
/*
* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "esp_log.h"
#include "esp_check.h"
#include "pcap.h"
static const char *TAG = "pcap";
#define PCAP_MAGIC_BIG_ENDIAN 0xA1B2C3D4 /*!< Big-Endian */
#define PCAP_MAGIC_LITTLE_ENDIAN 0xD4C3B2A1 /*!< Little-Endian */
typedef struct pcap_file_t pcap_file_t;
/**
* @brief Pcap File Header
*
*/
typedef struct {
uint32_t magic; /*!< Magic Number */
uint16_t major; /*!< Major Version */
uint16_t minor; /*!< Minor Version */
uint32_t zone; /*!< Time Zone Offset */
uint32_t sigfigs; /*!< Timestamp Accuracy */
uint32_t snaplen; /*!< Max Length to Capture */
uint32_t link_type; /*!< Link Layer Type */
} pcap_file_header_t;
/**
* @brief Pcap Packet Header
*
*/
typedef struct {
uint32_t seconds; /*!< Number of seconds since January 1st, 1970, 00:00:00 GMT */
uint32_t microseconds; /*!< Number of microseconds when the packet was captured (offset from seconds) */
uint32_t capture_length; /*!< Number of bytes of captured data, no longer than packet_length */
uint32_t packet_length; /*!< Actual length of current packet */
} pcap_packet_header_t;
/**
* @brief Pcap Runtime Handle
*
*/
struct pcap_file_t {
FILE *file; /*!< File handle */
pcap_link_type_t link_type; /*!< Pcap Link Type */
unsigned int major_version; /*!< Pcap version: major */
unsigned int minor_version; /*!< Pcap version: minor */
unsigned int time_zone; /*!< Pcap timezone code */
uint32_t endian_magic; /*!< Magic value related to endian format */
};
esp_err_t pcap_new_session(const pcap_config_t *config, pcap_file_handle_t *ret_pcap)
{
esp_err_t ret = ESP_OK;
pcap_file_t *pcap = NULL;
ESP_GOTO_ON_FALSE(config && ret_pcap, ESP_ERR_INVALID_ARG, err, TAG, "invalid argument");
ESP_GOTO_ON_FALSE(config->fp, ESP_ERR_INVALID_ARG, err, TAG, "pcap file handle can't be NULL");
pcap = calloc(1, sizeof(pcap_file_t));
ESP_GOTO_ON_FALSE(pcap, ESP_ERR_NO_MEM, err, TAG, "no mem for pcap file object");
pcap->file = config->fp;
pcap->major_version = config->major_version;
pcap->minor_version = config->minor_version;
pcap->endian_magic = config->flags.little_endian ? PCAP_MAGIC_LITTLE_ENDIAN : PCAP_MAGIC_BIG_ENDIAN;
pcap->time_zone = config->time_zone;
*ret_pcap = pcap;
return ret;
err:
if (pcap) {
free(pcap);
}
return ret;
}
esp_err_t pcap_del_session(pcap_file_handle_t pcap)
{
ESP_RETURN_ON_FALSE(pcap, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
if (pcap->file) {
fclose(pcap->file);
pcap->file = NULL;
}
free(pcap);
return ESP_OK;
}
esp_err_t pcap_write_header(pcap_file_handle_t pcap, pcap_link_type_t link_type)
{
ESP_RETURN_ON_FALSE(pcap, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
/* Write Pcap File header */
pcap_file_header_t header = {
.magic = pcap->endian_magic,
.major = pcap->major_version,
.minor = pcap->minor_version,
.zone = pcap->time_zone,
.sigfigs = 0,
.snaplen = 0x40000,
.link_type = link_type,
};
size_t real_write = fwrite(&header, sizeof(header), 1, pcap->file);
ESP_RETURN_ON_FALSE(real_write == 1, ESP_FAIL, TAG, "write pcap file header failed");
/* Save the link type to pcap file object */
pcap->link_type = link_type;
/* Flush content in the buffer into device */
fflush(pcap->file);
return ESP_OK;
}
esp_err_t pcap_capture_packet(pcap_file_handle_t pcap, void *payload, uint32_t length, uint32_t seconds, uint32_t microseconds)
{
ESP_RETURN_ON_FALSE(pcap && payload, ESP_ERR_INVALID_ARG, TAG, "invalid argumnet");
size_t real_write = 0;
pcap_packet_header_t header = {
.seconds = seconds,
.microseconds = microseconds,
.capture_length = length,
.packet_length = length
};
real_write = fwrite(&header, sizeof(header), 1, pcap->file);
ESP_RETURN_ON_FALSE(real_write == 1, ESP_FAIL, TAG, "write packet header failed");
real_write = fwrite(payload, sizeof(uint8_t), length, pcap->file);
ESP_RETURN_ON_FALSE(real_write == length, ESP_FAIL, TAG, "write packet payload failed");
/* Flush content in the buffer into device */
fflush(pcap->file);
return ESP_OK;
}
esp_err_t pcap_print_summary(pcap_file_handle_t pcap, FILE *print_file)
{
esp_err_t ret = ESP_OK;
long size = 0;
char *packet_payload = NULL;
ESP_RETURN_ON_FALSE(pcap && print_file, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
// get file size
fseek(pcap->file, 0L, SEEK_END);
size = ftell(pcap->file);
fseek(pcap->file, 0L, SEEK_SET);
// file empty is allowed, so return ESP_OK
ESP_RETURN_ON_FALSE(size, ESP_OK, TAG, "pcap file is empty");
// packet index (by bytes)
uint32_t index = 0;
pcap_file_header_t file_header;
size_t real_read = fread(&file_header, sizeof(pcap_file_header_t), 1, pcap->file);
ESP_RETURN_ON_FALSE(real_read == 1, ESP_FAIL, TAG, "read pcap file header failed");
index += sizeof(pcap_file_header_t);
//print pcap header information
fprintf(print_file, "------------------------------------------------------------------------\n");
fprintf(print_file, "Pcap packet Head:\n");
fprintf(print_file, "------------------------------------------------------------------------\n");
fprintf(print_file, "Magic Number: %x\n", file_header.magic);
fprintf(print_file, "Major Version: %d\n", file_header.major);
fprintf(print_file, "Minor Version: %d\n", file_header.minor);
fprintf(print_file, "SnapLen: %d\n", file_header.snaplen);
fprintf(print_file, "LinkType: %d\n", file_header.link_type);
fprintf(print_file, "------------------------------------------------------------------------\n");
uint32_t packet_num = 0;
pcap_packet_header_t packet_header;
while (index < size) {
real_read = fread(&packet_header, sizeof(pcap_packet_header_t), 1, pcap->file);
ESP_GOTO_ON_FALSE(real_read == 1, ESP_FAIL, err, TAG, "read pcap packet header failed");
// print packet header information
fprintf(print_file, "Packet %d:\n", packet_num);
fprintf(print_file, "Timestamp (Seconds): %d\n", packet_header.seconds);
fprintf(print_file, "Timestamp (Microseconds): %d\n", packet_header.microseconds);
fprintf(print_file, "Capture Length: %d\n", packet_header.capture_length);
fprintf(print_file, "Packet Length: %d\n", packet_header.packet_length);
size_t payload_length = packet_header.capture_length;
packet_payload = malloc(payload_length);
ESP_GOTO_ON_FALSE(packet_payload, ESP_ERR_NO_MEM, err, TAG, "no mem to save packet payload");
real_read = fread(packet_payload, payload_length, 1, pcap->file);
ESP_GOTO_ON_FALSE(real_read == 1, ESP_FAIL, err, TAG, "read payload error");
// print packet information
if (file_header.link_type == PCAP_LINK_TYPE_802_11) {
// Frame Control Field is coded as LSB first
fprintf(print_file, "Frame Type: %2x\n", (packet_payload[0] >> 2) & 0x03);
fprintf(print_file, "Frame Subtype: %2x\n", (packet_payload[0] >> 4) & 0x0F);
fprintf(print_file, "Destination: ");
for (int j = 0; j < 5; j++) {
fprintf(print_file, "%2x ", packet_payload[4 + j]);
}
fprintf(print_file, "%2x\n", packet_payload[9]);
fprintf(print_file, "Source: ");
for (int j = 0; j < 5; j++) {
fprintf(print_file, "%2x ", packet_payload[10 + j]);
}
fprintf(print_file, "%2x\n", packet_payload[15]);
fprintf(print_file, "------------------------------------------------------------------------\n");
} else if (file_header.link_type == PCAP_LINK_TYPE_ETHERNET) {
fprintf(print_file, "Destination: ");
for (int j = 0; j < 5; j++) {
fprintf(print_file, "%2x ", packet_payload[j]);
}
fprintf(print_file, "%2x\n", packet_payload[5]);
fprintf(print_file, "Source: ");
for (int j = 0; j < 5; j++) {
fprintf(print_file, "%2x ", packet_payload[6 + j]);
}
fprintf(print_file, "%2x\n", packet_payload[11]);
fprintf(print_file, "Type: 0x%x\n", packet_payload[13] | (packet_payload[12] << 8));
fprintf(print_file, "------------------------------------------------------------------------\n");
} else {
fprintf(print_file, "Unknown link type:%d\n", file_header.link_type);
fprintf(print_file, "------------------------------------------------------------------------\n");
}
free(packet_payload);
packet_payload = NULL;
index += packet_header.capture_length + sizeof(pcap_packet_header_t);
packet_num ++;
}
fprintf(print_file, "Pcap packet Number: %d\n", packet_num);
fprintf(print_file, "------------------------------------------------------------------------\n");
return ret;
err:
if (packet_payload) {
free(packet_payload);
}
return ret;
}

2
test_app/CMakeLists.txt
View File

@ -9,7 +9,7 @@ set(EXTRA_COMPONENT_DIRS ../libsodium ../expat ../cbor ../jsmn ../qrcode ../coap
# 2. Add here if the component is compatible with IDF >= v4.4
if("${IDF_VERSION_MAJOR}.${IDF_VERSION_MINOR}" VERSION_GREATER_EQUAL "4.4")
list(APPEND EXTRA_COMPONENT_DIRS ../pid_ctrl ../esp_encrypted_img)
list(APPEND EXTRA_COMPONENT_DIRS ../pid_ctrl ../esp_encrypted_img ../pcap)
endif()
# 3. Add here if the component is compatible with IDF >= v5.0