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FTPManagement.c
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FTPManagement.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <curl/curl.h>
#include <sys/stat.h>
#include "cJSON.h"
#include "FTPManagement.h"
#include <libconfig.h>
#include "config.h"
#include "logger.h"
#include "base.h"
#include "semver.h"
struct memory {
char *data;
size_t size;
};
/*-------------------------------------------------------------------
* Function : write_data
* Inputs : char *contents
* size_t size
* size_t nmemb
* void *userdata
* Outputs : static size_t realsize
*
* This is a child function called by handle_get. This function writes
* data to a buffer as data is received by a cURL request.
-------------------------------------------------------------------*/
static size_t write_data(char *contents, size_t size, size_t nmemb, void *userdata) {
size_t realsize = size * nmemb;
struct memory *mem = (struct memory *)userdata;
char *ptr = realloc(mem->data, mem->size + realsize + 1);
if (ptr == NULL)
return 0;
mem->data = ptr;
memcpy(&mem->data[mem->size], contents, realsize);
mem->size += realsize;
mem->data[mem->size] = 0;
return realsize;
}
/*-------------------------------------------------------------------
* Function : handle_get
* Inputs : char *url
* Outputs : char *data
*
* This is the main cURL GET function. Communicate with either GitHub
* or the Blob server to obtain either the latest program version or
* the current fastest frame record respectively.
* The returning value (if non-NULL) MUST be freed.
-------------------------------------------------------------------*/
ABSL_MUST_USE_RESULT char *handle_get(char* url) {
CURL *curl;
struct memory chunk;
chunk.data = NULL;
chunk.size = 0;
CURLcode res;
curl = curl_easy_init();
if (curl) {
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_HTTPGET, 1);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &chunk);
curl_easy_setopt(curl, CURLOPT_USERAGENT, "curl/7.68.0");
res = curl_easy_perform(curl);
if (res != CURLE_OK) {
curl_easy_cleanup(curl);
return NULL;
}
curl_easy_cleanup(curl);
}
return chunk.data;
}
/*-------------------------------------------------------------------
* Function : getFastestRecordOnBlob
* Inputs :
* Outputs : int record
*
* Retrieve the server's current fastest roadmap length.
-------------------------------------------------------------------*/
int getFastestRecordOnBlob() {
char* data;
data = handle_get("https://hundorecipes.blob.core.windows.net/foundpaths/fastestFrames.txt");
if(data) {
int record = atoi(data);
free(data);
return record;
}
// Log
return 0;
}
/*-------------------------------------------------------------------
* Function : handle_post
* Inputs : char *url
* FILE *fp
* int localRecord
* char *nickname
* Outputs : int status
*
* Retrieve the server's current fastest roadmap length.
-------------------------------------------------------------------*/
void handle_post(char* url, FILE *fp, int localRecord, char *nickname) {
struct memory wt;
struct memory rt;
rt.data = NULL;
rt.size = 0;
fseek(fp, 0, SEEK_END);
long fsize = ftell(fp);
fseek(fp, 0, SEEK_SET);
wt.data = malloc(fsize+ strlen(nickname) + 50); // Offer enough padding for postfields
checkMallocFailed(wt.data);
size_t bytes_written;
bytes_written = sprintf(wt.data, "{\"frames\":\"%d\",\"userName\":\"%s\",\"routeContent\":\"", localRecord, nickname);
fread(wt.data + bytes_written, 1, fsize, fp);
fclose(fp);
sprintf(wt.data + fsize + bytes_written, "\"}");
CURL *curl = curl_easy_init();
if (curl) {
cJSON *json = cJSON_Parse(wt.data);
char *json_str = cJSON_PrintUnformatted(json);
cJSON_Delete(json);
checkMallocFailed(json_str);
struct curl_slist *headers = NULL;
headers = curl_slist_append(headers, "Content-Type: application/json");
headers = curl_slist_append(headers, "charset: utf-8");
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, json_str);
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &rt);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
curl_easy_perform(curl);
curl_slist_free_all(headers);
free(json_str);
curl_easy_cleanup(curl);
}
curl_global_cleanup();
free(wt.data);
// Log the body of the return of the POST request
recipeLog(1, "Server", "Upload", "Response", rt.data);
free(rt.data);
}
/*-------------------------------------------------------------------
* Function : testRecord
* Inputs : int localRecord
* Outputs : -1 - error locating the text file
* 0 - successful submission to the server
*
* Retrieve the server's current fastest roadmap length.
-------------------------------------------------------------------*/
int testRecord(int localRecord) {
if (localRecord < 0) {
printf("Record submitted is invalid (less then 0). Likely due to corruption of the PB.txt file or unexpected error. Not submitting\n");
return -2;
}
int remoteRecord = getFastestRecordOnBlob();
char filename[32];
char *folder = "results/";
char *extension = ".txt";
sprintf(filename, "%s%d%s", folder, localRecord, extension);
FILE *fp = fopen(filename, "rb");
if (fp == NULL) {
printf("Error could not locate file: %s. Please submit an issue on github including your OS version.\n", filename);
return -1;
}
const char* username = getConfigStr("Username");
char nickname[20];
strncpy(nickname, username, 19);
nickname[19] = '\0';
handle_post("https://hundorecipes.azurewebsites.net/api/uploadAndVerify", fp, localRecord, nickname);
return 0;
}
/*-------------------------------------------------------------------
* Function : checkForUpdates
* Inputs : const char *local_ver
* Outputs : 1 - outdated local version
* -1 - unable to retrieve server version
* 0 - up-to-date
*
* Retrieve the server's current fastest roadmap length.
-------------------------------------------------------------------*/
int checkForUpdates(const char *local_ver) {
char *url = "https://api.github.com/repos/SevenChords/CipesAtHome/releases/latest";
char *data = handle_get(url);
if (data == NULL) {
return -1;
}
cJSON *json = cJSON_Parse(data);
cJSON *json_item = cJSON_GetObjectItemCaseSensitive(json, "tag_name");
char *ver = cJSON_GetStringValue(json_item);
free(data);
if (ver == NULL) {
cJSON_Delete(json);
return -1;
}
semver_t local_ver_struct;
semver_t remote_ver_struct;
bool local_had_error = semver_parse(local_ver, &local_ver_struct);
bool remote_had_error = semver_parse(ver, &remote_ver_struct);
int result = -1;
if (local_had_error) {
printf("Unable to parse local version: '%s'\n", local_ver);
}
if (remote_had_error) {
printf("Unable to parse remote version: '%s'\n", ver);
}
if (local_had_error || remote_had_error) {
printf("Unable to parse one of the versions as a semver string. Falling back to exact version comparison.\n");
// Compare local version with github version
if (strncmp(local_ver, ver, 4) != 0) {
result = 1;
} else {
result = 0;
}
} else if (semver_lt(local_ver_struct, remote_ver_struct)) {
result = 1;
} else {
result = 0;
}
// Add logs
cJSON_Delete(json);
semver_free(&local_ver_struct);
semver_free(&remote_ver_struct);
return result;
}