pcap: Fix format warnings
Related to https://github.com/espressif/idf-extra-components/issues/65
This commit is contained in:
Tomas Rezucha
parent
a45de9cf24
commit
4691e54ffb
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@ -1,3 +1,2 @@
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idf_component_register(SRCS "src/pcap.c"
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INCLUDE_DIRS "include")
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target_compile_options(${COMPONENT_LIB} PRIVATE "-Wno-format")
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@ -1,4 +1,4 @@
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version: "1.0.1"
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version: "1.0.2"
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description: PCAP file writer
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url: https://github.com/espressif/idf-extra-components/tree/master/pcap
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dependencies:
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@ -1,5 +1,5 @@
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/*
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* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
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* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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@ -41,7 +41,8 @@ typedef enum {
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PCAP_LINK_TYPE_CISCO_HDLC = 104, /*!< Cisco HDLC */
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PCAP_LINK_TYPE_802_11 = 105, /*!< 802.11 */
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PCAP_LINK_TYPE_BSD_LOOPBACK = 108, /*!< OpenBSD loopback devices(with AF_value in network byte order) */
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PCAP_LINK_TYPE_LOCAL_TALK = 114 /*!< LocalTalk */
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PCAP_LINK_TYPE_LOCAL_TALK = 114, /*!< LocalTalk */
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PCAP_LINK_TYPE_USBPCAP = 249, /*!< USB packets, beginning with a USBPcap header */
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} pcap_link_type_t;
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/**
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447
pcap/src/pcap.c
447
pcap/src/pcap.c
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@ -1,223 +1,224 @@
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/*
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* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "esp_log.h"
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#include "esp_check.h"
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#include "pcap.h"
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static const char *TAG = "pcap";
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#define PCAP_MAGIC_BIG_ENDIAN 0xA1B2C3D4 /*!< Big-Endian */
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#define PCAP_MAGIC_LITTLE_ENDIAN 0xD4C3B2A1 /*!< Little-Endian */
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typedef struct pcap_file_t pcap_file_t;
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/**
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* @brief Pcap File Header
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*
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*/
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typedef struct {
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uint32_t magic; /*!< Magic Number */
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uint16_t major; /*!< Major Version */
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uint16_t minor; /*!< Minor Version */
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uint32_t zone; /*!< Time Zone Offset */
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uint32_t sigfigs; /*!< Timestamp Accuracy */
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uint32_t snaplen; /*!< Max Length to Capture */
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uint32_t link_type; /*!< Link Layer Type */
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} pcap_file_header_t;
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/**
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* @brief Pcap Packet Header
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*
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*/
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typedef struct {
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uint32_t seconds; /*!< Number of seconds since January 1st, 1970, 00:00:00 GMT */
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uint32_t microseconds; /*!< Number of microseconds when the packet was captured (offset from seconds) */
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uint32_t capture_length; /*!< Number of bytes of captured data, no longer than packet_length */
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uint32_t packet_length; /*!< Actual length of current packet */
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} pcap_packet_header_t;
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/**
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* @brief Pcap Runtime Handle
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*
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*/
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struct pcap_file_t {
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FILE *file; /*!< File handle */
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pcap_link_type_t link_type; /*!< Pcap Link Type */
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unsigned int major_version; /*!< Pcap version: major */
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unsigned int minor_version; /*!< Pcap version: minor */
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unsigned int time_zone; /*!< Pcap timezone code */
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uint32_t endian_magic; /*!< Magic value related to endian format */
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};
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esp_err_t pcap_new_session(const pcap_config_t *config, pcap_file_handle_t *ret_pcap)
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{
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esp_err_t ret = ESP_OK;
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pcap_file_t *pcap = NULL;
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ESP_GOTO_ON_FALSE(config && ret_pcap, ESP_ERR_INVALID_ARG, err, TAG, "invalid argument");
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ESP_GOTO_ON_FALSE(config->fp, ESP_ERR_INVALID_ARG, err, TAG, "pcap file handle can't be NULL");
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pcap = calloc(1, sizeof(pcap_file_t));
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ESP_GOTO_ON_FALSE(pcap, ESP_ERR_NO_MEM, err, TAG, "no mem for pcap file object");
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pcap->file = config->fp;
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pcap->major_version = config->major_version;
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pcap->minor_version = config->minor_version;
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pcap->endian_magic = config->flags.little_endian ? PCAP_MAGIC_LITTLE_ENDIAN : PCAP_MAGIC_BIG_ENDIAN;
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pcap->time_zone = config->time_zone;
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*ret_pcap = pcap;
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return ret;
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err:
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if (pcap) {
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free(pcap);
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}
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return ret;
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}
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esp_err_t pcap_del_session(pcap_file_handle_t pcap)
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{
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ESP_RETURN_ON_FALSE(pcap, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
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if (pcap->file) {
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fclose(pcap->file);
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pcap->file = NULL;
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}
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free(pcap);
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return ESP_OK;
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}
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esp_err_t pcap_write_header(pcap_file_handle_t pcap, pcap_link_type_t link_type)
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{
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ESP_RETURN_ON_FALSE(pcap, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
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/* Write Pcap File header */
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pcap_file_header_t header = {
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.magic = pcap->endian_magic,
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.major = pcap->major_version,
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.minor = pcap->minor_version,
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.zone = pcap->time_zone,
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.sigfigs = 0,
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.snaplen = 0x40000,
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.link_type = link_type,
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};
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size_t real_write = fwrite(&header, sizeof(header), 1, pcap->file);
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ESP_RETURN_ON_FALSE(real_write == 1, ESP_FAIL, TAG, "write pcap file header failed");
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/* Save the link type to pcap file object */
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pcap->link_type = link_type;
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/* Flush content in the buffer into device */
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fflush(pcap->file);
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return ESP_OK;
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}
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esp_err_t pcap_capture_packet(pcap_file_handle_t pcap, void *payload, uint32_t length, uint32_t seconds, uint32_t microseconds)
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{
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ESP_RETURN_ON_FALSE(pcap && payload, ESP_ERR_INVALID_ARG, TAG, "invalid argumnet");
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size_t real_write = 0;
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pcap_packet_header_t header = {
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.seconds = seconds,
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.microseconds = microseconds,
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.capture_length = length,
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.packet_length = length
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};
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real_write = fwrite(&header, sizeof(header), 1, pcap->file);
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ESP_RETURN_ON_FALSE(real_write == 1, ESP_FAIL, TAG, "write packet header failed");
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real_write = fwrite(payload, sizeof(uint8_t), length, pcap->file);
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ESP_RETURN_ON_FALSE(real_write == length, ESP_FAIL, TAG, "write packet payload failed");
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/* Flush content in the buffer into device */
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fflush(pcap->file);
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return ESP_OK;
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}
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esp_err_t pcap_print_summary(pcap_file_handle_t pcap, FILE *print_file)
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{
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esp_err_t ret = ESP_OK;
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long size = 0;
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char *packet_payload = NULL;
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ESP_RETURN_ON_FALSE(pcap && print_file, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
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// get file size
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fseek(pcap->file, 0L, SEEK_END);
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size = ftell(pcap->file);
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fseek(pcap->file, 0L, SEEK_SET);
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// file empty is allowed, so return ESP_OK
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ESP_RETURN_ON_FALSE(size, ESP_OK, TAG, "pcap file is empty");
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// packet index (by bytes)
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uint32_t index = 0;
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pcap_file_header_t file_header;
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size_t real_read = fread(&file_header, sizeof(pcap_file_header_t), 1, pcap->file);
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ESP_RETURN_ON_FALSE(real_read == 1, ESP_FAIL, TAG, "read pcap file header failed");
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index += sizeof(pcap_file_header_t);
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//print pcap header information
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fprintf(print_file, "------------------------------------------------------------------------\n");
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fprintf(print_file, "Pcap packet Head:\n");
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fprintf(print_file, "------------------------------------------------------------------------\n");
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fprintf(print_file, "Magic Number: %x\n", file_header.magic);
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fprintf(print_file, "Major Version: %d\n", file_header.major);
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fprintf(print_file, "Minor Version: %d\n", file_header.minor);
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fprintf(print_file, "SnapLen: %d\n", file_header.snaplen);
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fprintf(print_file, "LinkType: %d\n", file_header.link_type);
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fprintf(print_file, "------------------------------------------------------------------------\n");
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uint32_t packet_num = 0;
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pcap_packet_header_t packet_header;
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while (index < size) {
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real_read = fread(&packet_header, sizeof(pcap_packet_header_t), 1, pcap->file);
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ESP_GOTO_ON_FALSE(real_read == 1, ESP_FAIL, err, TAG, "read pcap packet header failed");
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// print packet header information
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fprintf(print_file, "Packet %d:\n", packet_num);
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fprintf(print_file, "Timestamp (Seconds): %d\n", packet_header.seconds);
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fprintf(print_file, "Timestamp (Microseconds): %d\n", packet_header.microseconds);
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fprintf(print_file, "Capture Length: %d\n", packet_header.capture_length);
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fprintf(print_file, "Packet Length: %d\n", packet_header.packet_length);
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size_t payload_length = packet_header.capture_length;
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packet_payload = malloc(payload_length);
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ESP_GOTO_ON_FALSE(packet_payload, ESP_ERR_NO_MEM, err, TAG, "no mem to save packet payload");
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real_read = fread(packet_payload, payload_length, 1, pcap->file);
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ESP_GOTO_ON_FALSE(real_read == 1, ESP_FAIL, err, TAG, "read payload error");
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// print packet information
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if (file_header.link_type == PCAP_LINK_TYPE_802_11) {
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// Frame Control Field is coded as LSB first
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fprintf(print_file, "Frame Type: %2x\n", (packet_payload[0] >> 2) & 0x03);
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fprintf(print_file, "Frame Subtype: %2x\n", (packet_payload[0] >> 4) & 0x0F);
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fprintf(print_file, "Destination: ");
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for (int j = 0; j < 5; j++) {
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fprintf(print_file, "%2x ", packet_payload[4 + j]);
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}
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fprintf(print_file, "%2x\n", packet_payload[9]);
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fprintf(print_file, "Source: ");
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for (int j = 0; j < 5; j++) {
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fprintf(print_file, "%2x ", packet_payload[10 + j]);
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}
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fprintf(print_file, "%2x\n", packet_payload[15]);
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fprintf(print_file, "------------------------------------------------------------------------\n");
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} else if (file_header.link_type == PCAP_LINK_TYPE_ETHERNET) {
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fprintf(print_file, "Destination: ");
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for (int j = 0; j < 5; j++) {
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fprintf(print_file, "%2x ", packet_payload[j]);
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}
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fprintf(print_file, "%2x\n", packet_payload[5]);
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fprintf(print_file, "Source: ");
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for (int j = 0; j < 5; j++) {
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fprintf(print_file, "%2x ", packet_payload[6 + j]);
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}
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fprintf(print_file, "%2x\n", packet_payload[11]);
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fprintf(print_file, "Type: 0x%x\n", packet_payload[13] | (packet_payload[12] << 8));
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fprintf(print_file, "------------------------------------------------------------------------\n");
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} else {
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fprintf(print_file, "Unknown link type:%d\n", file_header.link_type);
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fprintf(print_file, "------------------------------------------------------------------------\n");
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}
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free(packet_payload);
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packet_payload = NULL;
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index += packet_header.capture_length + sizeof(pcap_packet_header_t);
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packet_num ++;
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}
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fprintf(print_file, "Pcap packet Number: %d\n", packet_num);
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fprintf(print_file, "------------------------------------------------------------------------\n");
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return ret;
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err:
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if (packet_payload) {
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free(packet_payload);
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}
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return ret;
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}
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/*
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* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include "esp_log.h"
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#include "esp_check.h"
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#include "pcap.h"
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static const char *TAG = "pcap";
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#define PCAP_MAGIC_BIG_ENDIAN 0xA1B2C3D4 /*!< Big-Endian */
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#define PCAP_MAGIC_LITTLE_ENDIAN 0xD4C3B2A1 /*!< Little-Endian */
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typedef struct pcap_file_t pcap_file_t;
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/**
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* @brief Pcap File Header
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*
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*/
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typedef struct {
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uint32_t magic; /*!< Magic Number */
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uint16_t major; /*!< Major Version */
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uint16_t minor; /*!< Minor Version */
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uint32_t zone; /*!< Time Zone Offset */
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uint32_t sigfigs; /*!< Timestamp Accuracy */
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uint32_t snaplen; /*!< Max Length to Capture */
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uint32_t link_type; /*!< Link Layer Type */
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} pcap_file_header_t;
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/**
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* @brief Pcap Packet Header
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*
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*/
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typedef struct {
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uint32_t seconds; /*!< Number of seconds since January 1st, 1970, 00:00:00 GMT */
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uint32_t microseconds; /*!< Number of microseconds when the packet was captured (offset from seconds) */
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uint32_t capture_length; /*!< Number of bytes of captured data, no longer than packet_length */
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uint32_t packet_length; /*!< Actual length of current packet */
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} pcap_packet_header_t;
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/**
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* @brief Pcap Runtime Handle
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*
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*/
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struct pcap_file_t {
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FILE *file; /*!< File handle */
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pcap_link_type_t link_type; /*!< Pcap Link Type */
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unsigned int major_version; /*!< Pcap version: major */
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unsigned int minor_version; /*!< Pcap version: minor */
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unsigned int time_zone; /*!< Pcap timezone code */
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uint32_t endian_magic; /*!< Magic value related to endian format */
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};
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esp_err_t pcap_new_session(const pcap_config_t *config, pcap_file_handle_t *ret_pcap)
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{
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esp_err_t ret = ESP_OK;
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pcap_file_t *pcap = NULL;
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ESP_GOTO_ON_FALSE(config && ret_pcap, ESP_ERR_INVALID_ARG, err, TAG, "invalid argument");
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ESP_GOTO_ON_FALSE(config->fp, ESP_ERR_INVALID_ARG, err, TAG, "pcap file handle can't be NULL");
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pcap = calloc(1, sizeof(pcap_file_t));
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ESP_GOTO_ON_FALSE(pcap, ESP_ERR_NO_MEM, err, TAG, "no mem for pcap file object");
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pcap->file = config->fp;
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pcap->major_version = config->major_version;
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pcap->minor_version = config->minor_version;
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pcap->endian_magic = config->flags.little_endian ? PCAP_MAGIC_LITTLE_ENDIAN : PCAP_MAGIC_BIG_ENDIAN;
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pcap->time_zone = config->time_zone;
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*ret_pcap = pcap;
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return ret;
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err:
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if (pcap) {
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free(pcap);
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}
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return ret;
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}
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esp_err_t pcap_del_session(pcap_file_handle_t pcap)
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{
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ESP_RETURN_ON_FALSE(pcap, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
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if (pcap->file) {
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fclose(pcap->file);
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pcap->file = NULL;
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}
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free(pcap);
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return ESP_OK;
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}
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esp_err_t pcap_write_header(pcap_file_handle_t pcap, pcap_link_type_t link_type)
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{
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ESP_RETURN_ON_FALSE(pcap, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
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/* Write Pcap File header */
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pcap_file_header_t header = {
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.magic = pcap->endian_magic,
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.major = pcap->major_version,
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.minor = pcap->minor_version,
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.zone = pcap->time_zone,
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.sigfigs = 0,
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.snaplen = 0x40000,
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.link_type = link_type,
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};
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size_t real_write = fwrite(&header, sizeof(header), 1, pcap->file);
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ESP_RETURN_ON_FALSE(real_write == 1, ESP_FAIL, TAG, "write pcap file header failed");
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/* Save the link type to pcap file object */
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pcap->link_type = link_type;
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/* Flush content in the buffer into device */
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fflush(pcap->file);
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return ESP_OK;
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}
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esp_err_t pcap_capture_packet(pcap_file_handle_t pcap, void *payload, uint32_t length, uint32_t seconds, uint32_t microseconds)
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{
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ESP_RETURN_ON_FALSE(pcap && payload, ESP_ERR_INVALID_ARG, TAG, "invalid argumnet");
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size_t real_write = 0;
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pcap_packet_header_t header = {
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.seconds = seconds,
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.microseconds = microseconds,
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.capture_length = length,
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.packet_length = length
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};
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real_write = fwrite(&header, sizeof(header), 1, pcap->file);
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ESP_RETURN_ON_FALSE(real_write == 1, ESP_FAIL, TAG, "write packet header failed");
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real_write = fwrite(payload, sizeof(uint8_t), length, pcap->file);
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ESP_RETURN_ON_FALSE(real_write == length, ESP_FAIL, TAG, "write packet payload failed");
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/* Flush content in the buffer into device */
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fflush(pcap->file);
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return ESP_OK;
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}
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esp_err_t pcap_print_summary(pcap_file_handle_t pcap, FILE *print_file)
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{
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esp_err_t ret = ESP_OK;
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long size = 0;
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char *packet_payload = NULL;
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ESP_RETURN_ON_FALSE(pcap && print_file, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
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// get file size
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fseek(pcap->file, 0L, SEEK_END);
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size = ftell(pcap->file);
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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: %"PRIx32"\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: %"PRIu32"\n", file_header.snaplen);
|
||||
fprintf(print_file, "LinkType: %"PRIu32"\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 %"PRIu32":\n", packet_num);
|
||||
fprintf(print_file, "Timestamp (Seconds): %"PRIu32"\n", packet_header.seconds);
|
||||
fprintf(print_file, "Timestamp (Microseconds): %"PRIu32"\n", packet_header.microseconds);
|
||||
fprintf(print_file, "Capture Length: %"PRIu32"\n", packet_header.capture_length);
|
||||
fprintf(print_file, "Packet Length: %"PRIu32"\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:%"PRIu32"\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: %"PRIu32"\n", packet_num);
|
||||
fprintf(print_file, "------------------------------------------------------------------------\n");
|
||||
return ret;
|
||||
err:
|
||||
if (packet_payload) {
|
||||
free(packet_payload);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue