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Fix de/compression buffer overflows in TAK packets (#4317)

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* Fix de/compression buffer overflows in TAK packets

* Log message
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Ben Meadors 2024-07-23 06:16:53 -05:00 committed by GitHub
parent 6e648b9b77
commit 0d2a9b6282
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5 changed files with 108 additions and 96 deletions
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2
.semgrepignore
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@ -1,2 +1,2 @@
.github/workflows/main_matrix.yml .github/workflows/main_matrix.yml
src/mesh/compression/unishox2.c src/mesh/compression/unishox2.cpp

17
src/mesh/compression/unishox2.c → src/mesh/compression/unishox2.cpp
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@ -15,6 +15,7 @@
* *
* @author Arundale Ramanathan * @author Arundale Ramanathan
* *
* Port for Particle (particle.io) / Aruino - Jonathan Greenblatt
*/ */
/** /**
* @file unishox2.c * @file unishox2.c
@ -36,6 +37,14 @@
/// uint8_t is unsigned char /// uint8_t is unsigned char
typedef unsigned char uint8_t; typedef unsigned char uint8_t;
const char *USX_FREQ_SEQ_DFLT[] = {"\": \"", "\": ", "</", "=\"", "\":\"", "://"};
const char *USX_FREQ_SEQ_TXT[] = {" the ", " and ", "tion", " with", "ing", "ment"};
const char *USX_FREQ_SEQ_URL[] = {"https://", "www.", ".com", "http://", ".org", ".net"};
const char *USX_FREQ_SEQ_JSON[] = {"\": \"", "\": ", "\",", "}}}", "\":\"", "}}"};
const char *USX_FREQ_SEQ_HTML[] = {"</", "=\"", "div", "href", "class", "<p>"};
const char *USX_FREQ_SEQ_XML[] = {"</", "=\"", "\">", "<?xml version=\"1.0\"", "xmlns:", "://"};
const char *USX_TEMPLATES[] = {"tfff-of-tfTtf:rf:rf.fffZ", "tfff-of-tf", "(fff) fff-ffff", "tf:rf:rf", 0};
/// possible horizontal sets and states /// possible horizontal sets and states
enum { USX_ALPHA = 0, USX_SYM, USX_NUM, USX_DICT, USX_DELTA, USX_NUM_TEMP }; enum { USX_ALPHA = 0, USX_SYM, USX_NUM, USX_DICT, USX_DELTA, USX_NUM_TEMP };
@ -57,7 +66,7 @@ uint8_t usx_code_94[94];
uint8_t usx_vcodes[] = {0x00, 0x40, 0x60, 0x80, 0x90, 0xA0, 0xB0, 0xC0, 0xD0, 0xD8, 0xE0, 0xE4, 0xE8, 0xEC, uint8_t usx_vcodes[] = {0x00, 0x40, 0x60, 0x80, 0x90, 0xA0, 0xB0, 0xC0, 0xD0, 0xD8, 0xE0, 0xE4, 0xE8, 0xEC,
0xEE, 0xF0, 0xF2, 0xF4, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF}; 0xEE, 0xF0, 0xF2, 0xF4, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF};
/// Length of each vertical code /// Length of each veritical code
uint8_t usx_vcode_lens[] = {2, 3, 3, 4, 4, 4, 4, 4, 5, 5, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8}; uint8_t usx_vcode_lens[] = {2, 3, 3, 4, 4, 4, 4, 4, 5, 5, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8};
/// Vertical Codes and Set number for frequent sequences in sets USX_SYM and USX_NUM. First 3 bits indicate set (USX_SYM/USX_NUM) /// Vertical Codes and Set number for frequent sequences in sets USX_SYM and USX_NUM. First 3 bits indicate set (USX_SYM/USX_NUM)
@ -188,7 +197,7 @@ int append_switch_code(char *out, int olen, int ol, uint8_t state)
return ol; return ol;
} }
/// Appends given horizontal and vertical code bits to out /// Appends given horizontal and veritical code bits to out
int append_code(char *out, int olen, int ol, uint8_t code, uint8_t *state, const uint8_t usx_hcodes[], int append_code(char *out, int olen, int ol, uint8_t code, uint8_t *state, const uint8_t usx_hcodes[],
const uint8_t usx_hcode_lens[]) const uint8_t usx_hcode_lens[])
{ {
@ -888,7 +897,7 @@ int read8bitCode(const char *in, int len, int bit_no)
return code; return code;
} }
/// The list of vertical codes is split into 5 sections. Used by readVCodeIdx() /// The list of veritical codes is split into 5 sections. Used by readVCodeIdx()
#define SECTION_COUNT 5 #define SECTION_COUNT 5
/// Used by readVCodeIdx() for finding the section under which the code read using read8bitCode() falls /// Used by readVCodeIdx() for finding the section under which the code read using read8bitCode() falls
uint8_t usx_vsections[] = {0x7F, 0xBF, 0xDF, 0xEF, 0xFF}; uint8_t usx_vsections[] = {0x7F, 0xBF, 0xDF, 0xEF, 0xFF};
@ -915,7 +924,7 @@ uint8_t usx_vcode_lookup[36] = {(1 << 5) + 0, (1 << 5) + 0, (2 << 5) + 1, (2
/// compared to using a 256 uint8_t buffer to decode the next 8 bits read by read8bitCode() \n /// compared to using a 256 uint8_t buffer to decode the next 8 bits read by read8bitCode() \n
/// by splitting the list of vertical codes. \n /// by splitting the list of vertical codes. \n
/// Decoder is designed for using less memory, not speed. \n /// Decoder is designed for using less memory, not speed. \n
/// Returns the vertical code index or 99 if match could not be found. \n /// Returns the veritical code index or 99 if match could not be found. \n
/// Also updates bit_no_p with how many ever bits used by the vertical code. /// Also updates bit_no_p with how many ever bits used by the vertical code.
int readVCodeIdx(const char *in, int len, int *bit_no_p) int readVCodeIdx(const char *in, int len, int *bit_no_p)
{ {

70
src/mesh/compression/unishox2.h
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@ -15,12 +15,7 @@
* *
* @author Arundale Ramanathan * @author Arundale Ramanathan
* *
*/ * Port for Particle (particle.io) / Aruino - Jonathan Greenblatt
/**
* @file unishox2.h
* @author Arundale Ramanathan, James Z. M. Gao
* @brief API for Unishox2 Compression and Decompression
* *
* This file describes each function of the Unishox2 API \n * This file describes each function of the Unishox2 API \n
* For finding out how this API can be used in your program, \n * For finding out how this API can be used in your program, \n
@ -45,7 +40,7 @@
* The simple api, i.e. unishox2_(de)compress_simple will always omit the buffer length * The simple api, i.e. unishox2_(de)compress_simple will always omit the buffer length
*/ */
#ifndef UNISHOX_API_WITH_OUTPUT_LEN #ifndef UNISHOX_API_WITH_OUTPUT_LEN
#define UNISHOX_API_WITH_OUTPUT_LEN 0 #define UNISHOX_API_WITH_OUTPUT_LEN 1
#endif #endif
/// Upto 8 bits of initial magic bit sequence can be included. Bit count can be specified with UNISHOX_MAGIC_BIT_LEN /// Upto 8 bits of initial magic bit sequence can be included. Bit count can be specified with UNISHOX_MAGIC_BIT_LEN
@ -198,50 +193,13 @@
2, 2, 2, 2, 0 \ 2, 2, 2, 2, 0 \
} }
/// Default frequently occurring sequences. When composition of text is know beforehand, the other sequences in this section can extern const char *USX_FREQ_SEQ_DFLT[];
/// be used to achieve more compression. extern const char *USX_FREQ_SEQ_TXT[];
#define USX_FREQ_SEQ_DFLT \ extern const char *USX_FREQ_SEQ_URL[];
(const char *[]) \ extern const char *USX_FREQ_SEQ_JSON[];
{ \ extern const char *USX_FREQ_SEQ_HTML[];
"\": \"", "\": ", "</", "=\"", "\":\"", "://" \ extern const char *USX_FREQ_SEQ_XML[];
} extern const char *USX_TEMPLATES[];
/// Frequently occurring sequences in text content
#define USX_FREQ_SEQ_TXT \
(const char *[]) \
{ \
" the ", " and ", "tion", " with", "ing", "ment" \
}
/// Frequently occurring sequences in URL content
#define USX_FREQ_SEQ_URL \
(const char *[]) \
{ \
"https://", "www.", ".com", "http://", ".org", ".net" \
}
/// Frequently occurring sequences in JSON content
#define USX_FREQ_SEQ_JSON \
(const char *[]) \
{ \
"\": \"", "\": ", "\",", "}}}", "\":\"", "}}" \
}
/// Frequently occurring sequences in HTML content
#define USX_FREQ_SEQ_HTML \
(const char *[]) \
{ \
"</", "=\"", "div", "href", "class", "<p>" \
}
/// Frequently occurring sequences in XML content
#define USX_FREQ_SEQ_XML \
(const char *[]) \
{ \
"</", "=\"", "\">", "<?xml version=\"1.0\"", "xmlns:", "://" \
}
/// Commonly occurring templates (ISO Date/Time, ISO Date, US Phone number, ISO Time, Unused)
#define USX_TEMPLATES \
(const char *[]) \
{ \
"tfff-of-tfTtf:rf:rf.fffZ", "tfff-of-tf", "(fff) fff-ffff", "tf:rf:rf", 0 \
}
/// Default preset parameter set. When composition of text is know beforehand, the other parameter sets in this section can be /// Default preset parameter set. When composition of text is know beforehand, the other parameter sets in this section can be
/// used to achieve more compression. /// used to achieve more compression.
@ -333,8 +291,8 @@ extern int unishox2_decompress_simple(const char *in, int len, char *out);
* @param[in] olen length of 'out' buffer in bytes. Can be omitted if sufficient buffer is provided * @param[in] olen length of 'out' buffer in bytes. Can be omitted if sufficient buffer is provided
* @param[in] usx_hcodes Horizontal codes (array of bytes). See macro section for samples. * @param[in] usx_hcodes Horizontal codes (array of bytes). See macro section for samples.
* @param[in] usx_hcode_lens Length of each element in usx_hcodes array * @param[in] usx_hcode_lens Length of each element in usx_hcodes array
* @param[in] usx_freq_seq Frequently occurring sequences. See USX_FREQ_SEQ_* macros for samples * @param[in] usx_freq_seq Frequently occuring sequences. See USX_FREQ_SEQ_* macros for samples
* @param[in] usx_templates Templates of frequently occurring patterns. See USX_TEMPLATES macro. * @param[in] usx_templates Templates of frequently occuring patterns. See USX_TEMPLATES macro.
*/ */
extern int unishox2_compress(const char *in, int len, UNISHOX_API_OUT_AND_LEN(char *out, int olen), extern int unishox2_compress(const char *in, int len, UNISHOX_API_OUT_AND_LEN(char *out, int olen),
const unsigned char usx_hcodes[], const unsigned char usx_hcode_lens[], const char *usx_freq_seq[], const unsigned char usx_hcodes[], const unsigned char usx_hcode_lens[], const char *usx_freq_seq[],
@ -352,8 +310,8 @@ extern int unishox2_compress(const char *in, int len, UNISHOX_API_OUT_AND_LEN(ch
* @param[in] olen length of 'out' buffer in bytes. Can be omitted if sufficient buffer is provided * @param[in] olen length of 'out' buffer in bytes. Can be omitted if sufficient buffer is provided
* @param[in] usx_hcodes Horizontal codes (array of bytes). See macro section for samples. * @param[in] usx_hcodes Horizontal codes (array of bytes). See macro section for samples.
* @param[in] usx_hcode_lens Length of each element in usx_hcodes array * @param[in] usx_hcode_lens Length of each element in usx_hcodes array
* @param[in] usx_freq_seq Frequently occurring sequences. See USX_FREQ_SEQ_* macros for samples * @param[in] usx_freq_seq Frequently occuring sequences. See USX_FREQ_SEQ_* macros for samples
* @param[in] usx_templates Templates of frequently occurring patterns. See USX_TEMPLATES macro. * @param[in] usx_templates Templates of frequently occuring patterns. See USX_TEMPLATES macro.
*/ */
extern int unishox2_decompress(const char *in, int len, UNISHOX_API_OUT_AND_LEN(char *out, int olen), extern int unishox2_decompress(const char *in, int len, UNISHOX_API_OUT_AND_LEN(char *out, int olen),
const unsigned char usx_hcodes[], const unsigned char usx_hcode_lens[], const char *usx_freq_seq[], const unsigned char usx_hcodes[], const unsigned char usx_hcode_lens[], const char *usx_freq_seq[],
@ -373,7 +331,7 @@ extern int unishox2_compress_lines(const char *in, int len, UNISHOX_API_OUT_AND_
const char *usx_freq_seq[], const char *usx_templates[], struct us_lnk_lst *prev_lines); const char *usx_freq_seq[], const char *usx_templates[], struct us_lnk_lst *prev_lines);
/** /**
* More Comprehensive API for de-compressing array of strings \n * More Comprehensive API for de-compressing array of strings \n
* This function is not be used in conjunction with unishox2_compress_lines() * This function is not be used in conjuction with unishox2_compress_lines()
* *
* See unishox2_decompress() function for parameter definitions. \n * See unishox2_decompress() function for parameter definitions. \n
* Typically an array is compressed using unishox2_compress_lines() and \n * Typically an array is compressed using unishox2_compress_lines() and \n

97
src/modules/AtakPluginModule.cpp
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@ -5,11 +5,8 @@
#include "PowerFSM.h" #include "PowerFSM.h"
#include "configuration.h" #include "configuration.h"
#include "main.h" #include "main.h"
#include "meshtastic/atak.pb.h"
extern "C" {
#include "mesh/compression/unishox2.h" #include "mesh/compression/unishox2.h"
} #include "meshtastic/atak.pb.h"
AtakPluginModule *atakPluginModule; AtakPluginModule *atakPluginModule;
@ -69,30 +66,53 @@ void AtakPluginModule::alterReceivedProtobuf(meshtastic_MeshPacket &mp, meshtast
auto compressed = cloneTAKPacketData(t); auto compressed = cloneTAKPacketData(t);
compressed.is_compressed = true; compressed.is_compressed = true;
if (t->has_contact) { if (t->has_contact) {
auto length = unishox2_compress_simple(t->contact.callsign, strlen(t->contact.callsign), compressed.contact.callsign); auto length = unishox2_compress_lines(t->contact.callsign, strlen(t->contact.callsign), compressed.contact.callsign,
sizeof(compressed.contact.callsign) - 1, USX_PSET_DFLT, NULL);
if (length < 0) {
LOG_WARN("Compression overflowed contact.callsign. Reverting to uncompressed packet\n");
return;
}
LOG_DEBUG("Compressed callsign: %d bytes\n", length); LOG_DEBUG("Compressed callsign: %d bytes\n", length);
length = unishox2_compress_lines(t->contact.device_callsign, strlen(t->contact.device_callsign),
length = unishox2_compress_simple(t->contact.device_callsign, strlen(t->contact.device_callsign), compressed.contact.device_callsign, sizeof(compressed.contact.device_callsign) - 1,
compressed.contact.device_callsign); USX_PSET_DFLT, NULL);
if (length < 0) {
LOG_WARN("Compression overflowed contact.device_callsign. Reverting to uncompressed packet\n");
return;
}
LOG_DEBUG("Compressed device_callsign: %d bytes\n", length); LOG_DEBUG("Compressed device_callsign: %d bytes\n", length);
} }
if (t->which_payload_variant == meshtastic_TAKPacket_chat_tag) { if (t->which_payload_variant == meshtastic_TAKPacket_chat_tag) {
auto length = unishox2_compress_simple(t->payload_variant.chat.message, strlen(t->payload_variant.chat.message), auto length = unishox2_compress_lines(t->payload_variant.chat.message, strlen(t->payload_variant.chat.message),
compressed.payload_variant.chat.message); compressed.payload_variant.chat.message,
sizeof(compressed.payload_variant.chat.message) - 1, USX_PSET_DFLT, NULL);
if (length < 0) {
LOG_WARN("Compression overflowed chat.message. Reverting to uncompressed packet\n");
return;
}
LOG_DEBUG("Compressed chat message: %d bytes\n", length); LOG_DEBUG("Compressed chat message: %d bytes\n", length);
if (t->payload_variant.chat.has_to) { if (t->payload_variant.chat.has_to) {
compressed.payload_variant.chat.has_to = true; compressed.payload_variant.chat.has_to = true;
length = unishox2_compress_simple(t->payload_variant.chat.to, strlen(t->payload_variant.chat.to), length = unishox2_compress_lines(t->payload_variant.chat.to, strlen(t->payload_variant.chat.to),
compressed.payload_variant.chat.to); compressed.payload_variant.chat.to,
sizeof(compressed.payload_variant.chat.to) - 1, USX_PSET_DFLT, NULL);
if (length < 0) {
LOG_WARN("Compression overflowed chat.to. Reverting to uncompressed packet\n");
return;
}
LOG_DEBUG("Compressed chat to: %d bytes\n", length); LOG_DEBUG("Compressed chat to: %d bytes\n", length);
} }
if (t->payload_variant.chat.has_to_callsign) { if (t->payload_variant.chat.has_to_callsign) {
compressed.payload_variant.chat.has_to_callsign = true; compressed.payload_variant.chat.has_to_callsign = true;
length = length = unishox2_compress_lines(t->payload_variant.chat.to_callsign, strlen(t->payload_variant.chat.to_callsign),
unishox2_compress_simple(t->payload_variant.chat.to_callsign, strlen(t->payload_variant.chat.to_callsign), compressed.payload_variant.chat.to_callsign,
compressed.payload_variant.chat.to_callsign); sizeof(compressed.payload_variant.chat.to_callsign) - 1, USX_PSET_DFLT, NULL);
if (length < 0) {
LOG_WARN("Compression overflowed chat.to_callsign. Reverting to uncompressed packet\n");
return;
}
LOG_DEBUG("Compressed chat to_callsign: %d bytes\n", length); LOG_DEBUG("Compressed chat to_callsign: %d bytes\n", length);
} }
} }
@ -102,7 +122,7 @@ void AtakPluginModule::alterReceivedProtobuf(meshtastic_MeshPacket &mp, meshtast
} else { } else {
if (!t->is_compressed) { if (!t->is_compressed) {
// Not compressed. Something is wrong // Not compressed. Something is wrong
LOG_ERROR("Received uncompressed TAKPacket over radio!\n"); LOG_WARN("Received uncompressed TAKPacket over radio! Skipping\n");
return; return;
} }
@ -112,32 +132,55 @@ void AtakPluginModule::alterReceivedProtobuf(meshtastic_MeshPacket &mp, meshtast
uncompressed.is_compressed = false; uncompressed.is_compressed = false;
if (t->has_contact) { if (t->has_contact) {
auto length = auto length =
unishox2_decompress_simple(t->contact.callsign, strlen(t->contact.callsign), uncompressed.contact.callsign); unishox2_decompress_lines(t->contact.callsign, strlen(t->contact.callsign), uncompressed.contact.callsign,
sizeof(uncompressed.contact.callsign) - 1, USX_PSET_DFLT, NULL);
if (length < 0) {
LOG_WARN("Decompression overflowed contact.callsign. Bailing out\n");
return;
}
LOG_DEBUG("Decompressed callsign: %d bytes\n", length); LOG_DEBUG("Decompressed callsign: %d bytes\n", length);
length = unishox2_decompress_simple(t->contact.device_callsign, strlen(t->contact.device_callsign), length = unishox2_decompress_lines(t->contact.device_callsign, strlen(t->contact.device_callsign),
uncompressed.contact.device_callsign); uncompressed.contact.device_callsign,
sizeof(uncompressed.contact.device_callsign) - 1, USX_PSET_DFLT, NULL);
if (length < 0) {
LOG_WARN("Decompression overflowed contact.device_callsign. Bailing out\n");
return;
}
LOG_DEBUG("Decompressed device_callsign: %d bytes\n", length); LOG_DEBUG("Decompressed device_callsign: %d bytes\n", length);
} }
if (uncompressed.which_payload_variant == meshtastic_TAKPacket_chat_tag) { if (uncompressed.which_payload_variant == meshtastic_TAKPacket_chat_tag) {
auto length = unishox2_decompress_simple(t->payload_variant.chat.message, strlen(t->payload_variant.chat.message), auto length = unishox2_decompress_lines(t->payload_variant.chat.message, strlen(t->payload_variant.chat.message),
uncompressed.payload_variant.chat.message); uncompressed.payload_variant.chat.message,
sizeof(uncompressed.payload_variant.chat.message) - 1, USX_PSET_DFLT, NULL);
if (length < 0) {
LOG_WARN("Decompression overflowed chat.message. Bailing out\n");
return;
}
LOG_DEBUG("Decompressed chat message: %d bytes\n", length); LOG_DEBUG("Decompressed chat message: %d bytes\n", length);
if (t->payload_variant.chat.has_to) { if (t->payload_variant.chat.has_to) {
uncompressed.payload_variant.chat.has_to = true; uncompressed.payload_variant.chat.has_to = true;
length = unishox2_decompress_simple(t->payload_variant.chat.to, strlen(t->payload_variant.chat.to), length = unishox2_decompress_lines(t->payload_variant.chat.to, strlen(t->payload_variant.chat.to),
uncompressed.payload_variant.chat.to); uncompressed.payload_variant.chat.to,
sizeof(uncompressed.payload_variant.chat.to) - 1, USX_PSET_DFLT, NULL);
if (length < 0) {
LOG_WARN("Decompression overflowed chat.to. Bailing out\n");
return;
}
LOG_DEBUG("Decompressed chat to: %d bytes\n", length); LOG_DEBUG("Decompressed chat to: %d bytes\n", length);
} }
if (t->payload_variant.chat.has_to_callsign) { if (t->payload_variant.chat.has_to_callsign) {
uncompressed.payload_variant.chat.has_to_callsign = true; uncompressed.payload_variant.chat.has_to_callsign = true;
length = length =
unishox2_decompress_simple(t->payload_variant.chat.to_callsign, strlen(t->payload_variant.chat.to_callsign), unishox2_decompress_lines(t->payload_variant.chat.to_callsign, strlen(t->payload_variant.chat.to_callsign),
uncompressed.payload_variant.chat.to_callsign); uncompressed.payload_variant.chat.to_callsign,
sizeof(uncompressed.payload_variant.chat.to_callsign) - 1, USX_PSET_DFLT, NULL);
if (length < 0) {
LOG_WARN("Decompression overflowed chat.to_callsign. Bailing out\n");
return;
}
LOG_DEBUG("Decompressed chat to_callsign: %d bytes\n", length); LOG_DEBUG("Decompressed chat to_callsign: %d bytes\n", length);
} }
} }

8
src/modules/PositionModule.cpp
View File

@ -11,12 +11,12 @@
#include "configuration.h" #include "configuration.h"
#include "gps/GeoCoord.h" #include "gps/GeoCoord.h"
#include "main.h" #include "main.h"
#include "mesh/compression/unishox2.h"
#include "meshtastic/atak.pb.h" #include "meshtastic/atak.pb.h"
#include "sleep.h" #include "sleep.h"
#include "target_specific.h" #include "target_specific.h"
extern "C" { extern "C" {
#include "mesh/compression/unishox2.h"
#include <Throttle.h> #include <Throttle.h>
} }
@ -255,10 +255,12 @@ meshtastic_MeshPacket *PositionModule::allocAtakPli()
.course = static_cast<uint16_t>(localPosition.ground_track), .course = static_cast<uint16_t>(localPosition.ground_track),
}}}; }}};
auto length = unishox2_compress_simple(owner.long_name, strlen(owner.long_name), takPacket.contact.device_callsign); auto length = unishox2_compress_lines(owner.long_name, strlen(owner.long_name), takPacket.contact.device_callsign,
sizeof(takPacket.contact.device_callsign) - 1, USX_PSET_DFLT, NULL);
LOG_DEBUG("Uncompressed device_callsign '%s' - %d bytes\n", owner.long_name, strlen(owner.long_name)); LOG_DEBUG("Uncompressed device_callsign '%s' - %d bytes\n", owner.long_name, strlen(owner.long_name));
LOG_DEBUG("Compressed device_callsign '%s' - %d bytes\n", takPacket.contact.device_callsign, length); LOG_DEBUG("Compressed device_callsign '%s' - %d bytes\n", takPacket.contact.device_callsign, length);
length = unishox2_compress_simple(owner.long_name, strlen(owner.long_name), takPacket.contact.callsign); length = unishox2_compress_lines(owner.long_name, strlen(owner.long_name), takPacket.contact.callsign,
sizeof(takPacket.contact.callsign) - 1, USX_PSET_DFLT, NULL);
mp->decoded.payload.size = mp->decoded.payload.size =
pb_encode_to_bytes(mp->decoded.payload.bytes, sizeof(mp->decoded.payload.bytes), &meshtastic_TAKPacket_msg, &takPacket); pb_encode_to_bytes(mp->decoded.payload.bytes, sizeof(mp->decoded.payload.bytes), &meshtastic_TAKPacket_msg, &takPacket);
return mp; return mp;