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//
// network.m
// cloudsync
//
// Created by Marco Bambini on 23/05/25.
//
#import <Foundation/Foundation.h>
#include "network.h"
#include "network_private.h"
void network_buffer_cleanup (void *xdata) {
if (xdata) CFRelease(xdata);
}
bool network_compute_endpoints (sqlite3_context *context, network_data *data, const char *conn_string) {
NSString *conn = [NSString stringWithUTF8String:conn_string];
NSString *conn_string_https = nil;
if ([conn hasPrefix:@"sqlitecloud://"]) {
conn_string_https = [conn stringByReplacingCharactersInRange:NSMakeRange(0, [@"sqlitecloud://" length]) withString:@"https://"];
} else {
conn_string_https = conn;
}
NSURL *url = [NSURL URLWithString:conn_string_https];
if (!url) return false;
NSString *scheme = url.scheme; // "https"
if (!scheme) return false;
NSString *host = url.host; // "cn5xiooanz.global3.ryujaz.sqlite.cloud"
if (!host) return false;
NSString *port = url.port.stringValue;
NSString *database = url.path; // "/chinook-cloudsync.sqlite"
if (!database) return false;
NSString *query = url.query; // "apikey=hWDanFolRT9WDK0p54lufNrIyfgLZgtMw6tb6fbPmpo" (OPTIONAL)
NSString *authentication = nil;
if (query) {
NSURLComponents *components = [NSURLComponents componentsWithString:[@"http://dummy?" stringByAppendingString:query]];
NSArray<NSURLQueryItem *> *items = components.queryItems;
for (NSURLQueryItem *item in items) {
// build new token
// apikey: just write the key for retrocompatibility
// other keys, like token: add a prefix, i.e. token=
if ([item.name isEqualToString:@"apikey"]) {
authentication = item.value;
break;
}
if ([item.name isEqualToString:@"token"]) {
authentication = [NSString stringWithFormat:@"%@=%@", item.name, item.value];
break;
}
}
}
char *site_id = network_data_get_siteid(data);
char *port_or_default = (port && strcmp(port.UTF8String, "8860") != 0) ? (char *)port.UTF8String : CLOUDSYNC_DEFAULT_ENDPOINT_PORT;
NSString *check_endpoint = [NSString stringWithFormat:@"%s://%s:%s/%s%s/%s", scheme.UTF8String, host.UTF8String, port_or_default, CLOUDSYNC_ENDPOINT_PREFIX, database.UTF8String, site_id];
NSString *upload_endpoint = [NSString stringWithFormat: @"%s://%s:%s/%s%s/%s/%s", scheme.UTF8String, host.UTF8String, port_or_default, CLOUDSYNC_ENDPOINT_PREFIX, database.UTF8String, site_id, CLOUDSYNC_ENDPOINT_UPLOAD];
return network_data_set_endpoints(data, (char *)authentication.UTF8String, (char *)check_endpoint.UTF8String, (char *)upload_endpoint.UTF8String, true);
}
bool network_send_buffer(network_data *data, const char *endpoint, const char *authentication, const void *blob, int blob_size) {
NSString *urlString = [NSString stringWithUTF8String:endpoint];
NSURL *url = [NSURL URLWithString:urlString];
if (!url) return false;
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:@"PUT"];
[request setValue:@"application/octet-stream" forHTTPHeaderField:@"Content-Type"];
[request setValue:@"text/plain" forHTTPHeaderField:@"Accept"];
if (authentication && authentication[0] != '\0') {
NSString *authString = [NSString stringWithFormat:@"Bearer %s", authentication];
[request setValue:authString forHTTPHeaderField:@"Authorization"];
}
NSData *bodyData = [NSData dataWithBytes:blob length:blob_size];
[request setHTTPBody:bodyData];
__block bool success = false;
dispatch_semaphore_t sema = dispatch_semaphore_create(0);
NSURLSessionConfiguration *config = [NSURLSessionConfiguration ephemeralSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:config];
NSURLSessionDataTask *task = [session dataTaskWithRequest:request
completionHandler:^(NSData * _Nullable data,
NSURLResponse * _Nullable response,
NSError * _Nullable error) {
if (!error && [response isKindOfClass:[NSHTTPURLResponse class]]) {
NSInteger statusCode = [(NSHTTPURLResponse *)response statusCode];
success = (statusCode >= 200 && statusCode < 300);
}
dispatch_semaphore_signal(sema);
}];
[task resume];
dispatch_semaphore_wait(sema, DISPATCH_TIME_FOREVER);
return success;
}
NETWORK_RESULT network_receive_buffer(network_data *data, const char *endpoint, const char *authentication, bool zero_terminated, bool is_post_request, char *json_payload, const char *custom_header) {
NSString *urlString = [NSString stringWithUTF8String:endpoint];
NSURL *url = [NSURL URLWithString:urlString];
if (!url) {
NETWORK_RESULT result = {};
NSString *msg = [NSString stringWithCString:"Malformed URL" encoding:NSUTF8StringEncoding];
result.code = CLOUDSYNC_NETWORK_ERROR;
result.buffer = (char *)msg.UTF8String;
result.xdata = (void *)CFBridgingRetain(msg);
result.xfree = network_buffer_cleanup;
return result;
}
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
request.HTTPMethod = (json_payload || is_post_request) ? @"POST" : @"GET";
if (custom_header) {
NSString *header = [NSString stringWithUTF8String:custom_header];
NSArray<NSString *> *parts = [header componentsSeparatedByString:@": "];
if (parts.count == 2) {
[request setValue:parts[1] forHTTPHeaderField:parts[0]];
}
}
if (authentication) {
NSString *authString = [NSString stringWithFormat:@"Bearer %s", authentication];
[request setValue:authString forHTTPHeaderField:@"Authorization"];
}
if (json_payload) {
[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
NSData *jsonData = [NSData dataWithBytes:json_payload length:strlen(json_payload)];
request.HTTPBody = jsonData;
} else if (is_post_request) {
request.HTTPBody = [NSData data]; // empty POST
}
__block NSData *responseData = nil;
__block NSString *responseError = nil;
__block NSInteger statusCode = 0;
__block NSInteger errorCode = 0;
dispatch_semaphore_t sema = dispatch_semaphore_create(0);
NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
responseData = data;
if (error) {
responseError = [error localizedDescription];
errorCode = [error code];
}
if ([response isKindOfClass:[NSHTTPURLResponse class]]) {
statusCode = [(NSHTTPURLResponse *)response statusCode];
}
dispatch_semaphore_signal(sema);
}];
[task resume];
dispatch_semaphore_wait(sema, DISPATCH_TIME_FOREVER);
if (!responseError && (statusCode >= 200 && statusCode < 300)) {
// check if OK should be returned
if (responseData == nil || [responseData length] == 0) {
return (NETWORK_RESULT){CLOUDSYNC_NETWORK_OK, NULL, 0, NULL, NULL};
}
// otherwise return a buffer
NETWORK_RESULT result = {};
result.code = CLOUDSYNC_NETWORK_BUFFER;
if (zero_terminated) {
NSString *utf8String = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
result.buffer = (char *)utf8String.UTF8String;
result.xdata = (void *)CFBridgingRetain(utf8String);
} else {
result.buffer = (char *)responseData.bytes;
result.xdata = (void *)CFBridgingRetain(responseData);
}
result.blen = [responseData length];
result.xfree = network_buffer_cleanup;
return result;
}
// return error
NETWORK_RESULT result = {};
NSString *msg = nil;
if (responseError) {
msg = responseError;
} else if (responseData && [responseData length] > 0) {
// Use the actual response body as the error message
msg = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
if (!msg) {
msg = [NSString stringWithFormat:@"HTTP %ld error", (long)statusCode];
}
} else {
msg = [NSString stringWithFormat:@"HTTP %ld error", (long)statusCode];
}
result.code = CLOUDSYNC_NETWORK_ERROR;
result.buffer = (char *)msg.UTF8String;
result.xdata = (void *)CFBridgingRetain(msg);
result.xfree = network_buffer_cleanup;
result.blen = responseError ? (size_t)errorCode : (size_t)statusCode;
return result;
}