nicdex/eventstore-client-c
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extract buffer, tcp_package

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This commit is contained in:
Nicolas Dextraze 2018-03-18 23:08:57 -07:00
parent 716a6223a7
commit 4ddb60472d
9 changed files with 185 additions and 164 deletions
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6
.idea/vcs.xml Normal file
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@ -0,0 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="VcsDirectoryMappings">
<mapping directory="$PROJECT_DIR$" vcs="Git" />
</component>
</project>

2
CMakeLists.txt
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@ -6,7 +6,7 @@ set(CMAKE_C_STANDARD 99)
include_directories(c:/Users/nicol/dev/thirdparty/protobuf-c)
link_directories(c:/Users/nicol/dev/thirdparty/protobuf-c/protobuf-c/.libs)
add_executable(esc main.c mutex.c mutex.h thread.c thread.h socket.c socket.h esc.c esc.h ClientMessageDtos.pb-c.c ClientMessageDtos.pb-c.h uuid.c uuid.h)
add_executable(esc main.c mutex.c mutex.h thread.c thread.h socket.c socket.h esc.c esc.h ClientMessageDtos.pb-c.c ClientMessageDtos.pb-c.h uuid.c uuid.h buffer.c buffer.h tcp_package.c tcp_package.h)
if(WIN32)
target_link_libraries(esc wsock32 ws2_32 libprotobuf-c.a)

20
buffer.c Normal file
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@ -0,0 +1,20 @@
//
// Created by nicol on 2018-03-18.
//
#include <stdlib.h>
#include "buffer.h"
const buffer_t buffer_create(uint32_t size) {
buffer_t buf = {size, malloc(size)};
return buf;
}
const buffer_t buffer_from(uint8_t* data, uint32_t size) {
buffer_t buf = {size, data};
return buf;
}
void buffer_free(buffer_t buffer) {
free(buffer.data);
}

20
buffer.h Normal file
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@ -0,0 +1,20 @@
//
// Created by nicol on 2018-03-18.
//
#ifndef ESC_BUFFER_H
#define ESC_BUFFER_H
#include <stdint.h>
struct st_buffer {
uint32_t size;
uint8_t* data;
};
typedef struct st_buffer buffer_t;
const buffer_t buffer_create(uint32_t size);
const buffer_t buffer_from(uint8_t* data, uint32_t size);
void buffer_free(buffer_t buffer);
#endif //ESC_BUFFER_H

115
esc.c
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@ -8,112 +8,9 @@
#include <winsock2.h>
#include "esc.h"
#include "socket.h"
#include "uuid.h"
#include "buffer.h"
#include "ClientMessageDtos.pb-c.h"
struct st_buffer {
uint32_t size;
uint8_t* data;
};
typedef struct st_buffer buffer_t;
const buffer_t buffer_create(uint32_t size) {
buffer_t buf = {size, malloc(size)};
return buf;
}
const buffer_t buffer_from(uint8_t* data, uint32_t size) {
buffer_t buf = {size, data};
return buf;
}
void buffer_free(buffer_t buffer) {
free(buffer.data);
}
struct st_tcp_package {
uint8_t command;
uint8_t flags;
esc_uuid_t correlation_id;
const char* login;
const char* password;
buffer_t data;
};
typedef struct st_tcp_package tcp_package_t;
const uint32_t CommandOffset = 0;
const uint32_t FlagsOffset = 1;
const uint32_t CorrelationOffset = 2;
const uint32_t AuthOffset = 18;
const uint32_t MandatorySize = 18;
const tcp_package_t* tcp_package_create(uint8_t command, const esc_uuid_t* correlation_id, buffer_t data) {
tcp_package_t* pkg = malloc(sizeof(tcp_package_t));
pkg->command = command;
pkg->flags = 0;
pkg->correlation_id = *correlation_id;
pkg->login = 0;
pkg->password = 0;
pkg->data = data;
return pkg;
}
const tcp_package_t* tcp_package_create_authenticated(uint8_t command, const esc_uuid_t* correlation_id, buffer_t data, const char* username, const char* password) {
tcp_package_t* pkg = malloc(sizeof(tcp_package_t));
pkg->command = command;
pkg->flags = 1;
pkg->correlation_id = *correlation_id;
pkg->login = username;
pkg->password = password;
pkg->data = data;
return pkg;
}
void tcp_package_free(const tcp_package_t* pkg) {
buffer_free(pkg->data);
free((void*)pkg);
}
buffer_t tcp_package_to_buffer(const tcp_package_t* pkg) {
uint8_t* _dst = malloc(MandatorySize + pkg->data.size + (pkg->flags ? 257*2 : 0));
_dst[CommandOffset] = pkg->command;
_dst[FlagsOffset] = pkg->flags;
memcpy(&_dst[CorrelationOffset], &pkg->correlation_id, sizeof(esc_uuid_t));
size_t size = MandatorySize;
if (pkg->flags) {
size_t l_len = strlen(pkg->login);
_dst[AuthOffset] = l_len;
strcpy(&_dst[AuthOffset+1], pkg->login);
size_t p_len = strlen(pkg->password);
_dst[AuthOffset+1+l_len] = p_len;
strcpy(&_dst[AuthOffset+2+l_len], pkg->password);
memcpy(&_dst[AuthOffset+2+l_len+p_len], pkg->data.data, pkg->data.size);
size += 2 + l_len + p_len + pkg->data.size;
} else {
memcpy(&_dst[AuthOffset], pkg->data.data, pkg->data.size);
size += pkg->data.size;
}
return buffer_from(_dst, size);
}
const tcp_package_t* tcp_package_from_buffer(buffer_t buffer) {
tcp_package_t* pkg = malloc(sizeof(tcp_package_t));
pkg->command = buffer.data[CommandOffset];
pkg->flags = buffer.data[FlagsOffset];
memcpy(&pkg->correlation_id, &buffer.data[CorrelationOffset], sizeof(esc_uuid_t));
if (pkg->flags) {
size_t l_len = buffer.data[AuthOffset];
size_t p_len = buffer.data[AuthOffset+1+l_len];
pkg->data = buffer_create(buffer.size - MandatorySize - 2 - l_len - p_len);
memcpy(pkg->data.data, &buffer.data[MandatorySize + 2 + l_len + p_len], buffer.size - MandatorySize - 2 - l_len - p_len);
} else {
pkg->login = 0;
pkg->password = 0;
pkg->data = buffer_create(buffer.size - MandatorySize);
memcpy(pkg->data.data, &buffer.data[MandatorySize], buffer.size - MandatorySize);
}
return pkg;
}
#include "tcp_package.h"
struct st_connection_settings {
unsigned char use_ssl_connection;
@ -283,10 +180,17 @@ const esc_credentials_t* esc_credentials_create(const char* username, const char
return creds;
}
const char* string_clone(const char* src) {
char* dst = malloc(strlen(src)+1);
strcpy(dst, src);
return dst;
}
const esc_recorded_event_t* recorded_event_create(EventStore__Client__Messages__EventRecord* msg) {
if (msg == 0) return 0;
esc_recorded_event_t* ev = malloc(sizeof(esc_recorded_event_t));
ev->event_id = esc_uuid_from(msg->event_id.data, msg->event_id.len);
ev->event_type = string_clone(msg->event_type);
return ev;
}
@ -338,6 +242,7 @@ const esc_all_events_slice_t* esc_connection_read_all_forward(const esc_connecti
for (size_t i = 0; i < recv_msg->n_events; i++) {
result->events[i] = resolved_event_create(recv_msg->events[i]);
}
event_store__client__messages__read_all_events_completed__free_unpacked(recv_msg, &conn->protobuf_c_allocator);
return result;
}

1
esc.h
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@ -27,6 +27,7 @@ typedef struct st_esc_position esc_position_t;
struct st_recorded_event {
const esc_uuid_t* event_id;
const char* event_type;
};
typedef struct st_recorded_event esc_recorded_event_t;

56
main.c
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@ -1,29 +1,8 @@
#include <stdio.h>
#include "mutex.h"
#include "thread.h"
#include "socket.h"
#include "esc.h"
/*
unsigned long my_first_thread(void* arg) {
mutex_t mut = arg;
mutex_lock(mut);
printf("1\n");
mutex_unlock(mut);
return 0;
}
unsigned long my_second_thread(void* arg) {
mutex_t mut = arg;
mutex_lock(mut);
printf("2\n");
mutex_unlock(mut);
return 0;
}
*/
int main() {
#ifdef _WIN32
WSADATA wsaData;
@ -38,7 +17,10 @@ int main() {
return -2;
}
const esc_credentials_t* credentials = esc_credentials_create("admin", "changeit");
const esc_all_events_slice_t* result = esc_connection_read_all_forward(conn, NULL, 1024, credentials);
const esc_all_events_slice_t *result = 0;
do {
result = esc_connection_read_all_forward(conn, result ? &result->next_position : NULL, 1024, credentials);
if (result == 0) {
return -3;
}
@ -49,34 +31,12 @@ int main() {
esc_position_format(&result->next_position, posbuf2, 44),
result->is_end_of_stream);
char uuid_buf[37];
for(size_t i = 0; i < result->n_events; i++) {
printf("%s\n", esc_uuid_format(result->events[i]->event->event_id, uuid_buf, 37));
for (size_t i = 0; i < result->n_events; i++) {
printf("%s %s\n", esc_uuid_format(result->events[i]->event->event_id, uuid_buf, 37),
result->events[i]->event->event_type);
}
} while(result->is_end_of_stream == 0);
/*
socket_t s = socket_create(IPPROTO_TCP);
socket_connect(s, "www.google.ca", 80);
char* req = "GET / HTTP/1.1\r\nHost: www.google.ca\r\nConnection: close\r\n\r\n";
socket_send(s, req, strlen(req));
char buffer[4096];
memset(buffer, 0, 4096);
int rc;
while ((rc = socket_recv(s, buffer, 4096)) > 0) {
printf_s("%s", buffer);
memset(buffer, 0, 4096);
}
socket_close(s);
mutex_t sync = mutex_create();
thread_t one = thread_create(my_first_thread, sync);
thread_t two = thread_create(my_second_thread, sync);
thread_start(one);
thread_start(two);
printf("Hello, World!\n");
thread_destroy(one);
thread_destroy(two);
mutex_destroy(sync);
*/
#ifdef _WIN32
WSACleanup();
#endif

82
tcp_package.c Normal file
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@ -0,0 +1,82 @@
//
// Created by nicol on 2018-03-18.
//
#include <memory.h>
#include <stdlib.h>
#include <mem.h>
#include "tcp_package.h"
const uint32_t CommandOffset = 0;
const uint32_t FlagsOffset = 1;
const uint32_t CorrelationOffset = 2;
const uint32_t AuthOffset = 18;
const uint32_t MandatorySize = 18;
const tcp_package_t* tcp_package_create(uint8_t command, const esc_uuid_t* correlation_id, buffer_t data) {
tcp_package_t* pkg = malloc(sizeof(tcp_package_t));
pkg->command = command;
pkg->flags = 0;
pkg->correlation_id = *correlation_id;
pkg->login = 0;
pkg->password = 0;
pkg->data = data;
return pkg;
}
const tcp_package_t* tcp_package_create_authenticated(uint8_t command, const esc_uuid_t* correlation_id, buffer_t data, const char* username, const char* password) {
tcp_package_t* pkg = malloc(sizeof(tcp_package_t));
pkg->command = command;
pkg->flags = 1;
pkg->correlation_id = *correlation_id;
pkg->login = username;
pkg->password = password;
pkg->data = data;
return pkg;
}
void tcp_package_free(const tcp_package_t* pkg) {
buffer_free(pkg->data);
free((void*)pkg);
}
buffer_t tcp_package_to_buffer(const tcp_package_t* pkg) {
uint8_t* _dst = malloc(MandatorySize + pkg->data.size + (pkg->flags ? 257*2 : 0));
_dst[CommandOffset] = pkg->command;
_dst[FlagsOffset] = pkg->flags;
memcpy(&_dst[CorrelationOffset], &pkg->correlation_id, sizeof(esc_uuid_t));
size_t size = MandatorySize;
if (pkg->flags) {
size_t l_len = strlen(pkg->login);
_dst[AuthOffset] = l_len;
strcpy(&_dst[AuthOffset+1], pkg->login);
size_t p_len = strlen(pkg->password);
_dst[AuthOffset+1+l_len] = p_len;
strcpy(&_dst[AuthOffset+2+l_len], pkg->password);
memcpy(&_dst[AuthOffset+2+l_len+p_len], pkg->data.data, pkg->data.size);
size += 2 + l_len + p_len + pkg->data.size;
} else {
memcpy(&_dst[AuthOffset], pkg->data.data, pkg->data.size);
size += pkg->data.size;
}
return buffer_from(_dst, size);
}
const tcp_package_t* tcp_package_from_buffer(buffer_t buffer) {
tcp_package_t* pkg = malloc(sizeof(tcp_package_t));
pkg->command = buffer.data[CommandOffset];
pkg->flags = buffer.data[FlagsOffset];
memcpy(&pkg->correlation_id, &buffer.data[CorrelationOffset], sizeof(esc_uuid_t));
if (pkg->flags) {
size_t l_len = buffer.data[AuthOffset];
size_t p_len = buffer.data[AuthOffset+1+l_len];
pkg->data = buffer_create(buffer.size - MandatorySize - 2 - l_len - p_len);
memcpy(pkg->data.data, &buffer.data[MandatorySize + 2 + l_len + p_len], buffer.size - MandatorySize - 2 - l_len - p_len);
} else {
pkg->login = 0;
pkg->password = 0;
pkg->data = buffer_create(buffer.size - MandatorySize);
memcpy(pkg->data.data, &buffer.data[MandatorySize], buffer.size - MandatorySize);
}
return pkg;
}

27
tcp_package.h Normal file
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@ -0,0 +1,27 @@
//
// Created by nicol on 2018-03-18.
//
#ifndef ESC_TCP_PACKAGE_H
#define ESC_TCP_PACKAGE_H
#include "buffer.h"
#include "uuid.h"
struct st_tcp_package {
uint8_t command;
uint8_t flags;
esc_uuid_t correlation_id;
const char* login;
const char* password;
buffer_t data;
};
typedef struct st_tcp_package tcp_package_t;
const tcp_package_t* tcp_package_create(uint8_t command, const esc_uuid_t* correlation_id, buffer_t data);
const tcp_package_t* tcp_package_create_authenticated(uint8_t command, const esc_uuid_t* correlation_id, buffer_t data, const char* username, const char* password);
void tcp_package_free(const tcp_package_t* pkg);
buffer_t tcp_package_to_buffer(const tcp_package_t* pkg);
const tcp_package_t* tcp_package_from_buffer(buffer_t buffer);
#endif //ESC_TCP_PACKAGE_H