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RTLPlayground/tools/httpd_sim.c
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555 lines
15 KiB
C
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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <ctype.h>
#include <stdint.h>
#include <stdbool.h>
#include <time.h>
#include "httpd_sim.h"
#include <json.h>
#include <signal.h>
#include "../version.h"
#define PORTS 6
time_t last_called;
uint64_t txG[PORTS], txB[PORTS], rxG[PORTS], rxB[PORTS];
char txG_buff[20], txB_buff[20], rxG_buff[20], rxB_buff[20];
char num_buff[20];
char upload_buffer[4194304]; // 4MB
char *content_type = NULL;
char boundary[72];
char cmd_history[1024][256];
uint16_t cmd_ptr = 0;
char *uploaded_config = NULL;
int uploaded_config_len;
char is_word(char *c, char *d)
{
uint8_t i = 0;
while (d[i] && (d[i] == c[i]))
i++;
if (d[i])
return 0;
if (c[i] != ' ' && c[i] != '\t' && c[i] != ':' && c[i] != '?' && c[i] != '=' && c[i] != '\n' && c[i] != '\r' && c[i])
return 0;
return 1;
}
int hasSuffix(const char *str, const char *suffix)
{
if (!str || !suffix)
return 0;
size_t lenstr = strlen(str);
size_t lensuffix = strlen(suffix);
if (lensuffix > lenstr)
return 0;
return strncmp(str + lenstr - lensuffix, suffix, lensuffix) == 0;
}
char *getMime(const char *name)
{
if (hasSuffix(name, ".html"))
return "text/html";
else if (hasSuffix(name, ".svg"))
return "image/svg+xml";
else if (hasSuffix(name, ".ico"))
return "image/svg+xml";
else if (hasSuffix(name, ".png"))
return "image/png";
else if (hasSuffix(name, ".js"))
return "text/javascript";
else if (hasSuffix(name, ".css"))
return "text/css";
return "text/plain";
}
void send_basic_info(int socket)
{
char *response = "HTTP/1.1 200 OK\r\n"
"Content-Type: application/json; charset=UTF-8\r\n\r\n"
"{\"ip_address\":\"192.168.10.247\",\"ip_gateway\":\"192.168.2.22\",\"ip_netmask\":\"255.255.255.0\",\"mac_address\":\"1c:2a:a3:23:00:02\",\"sw_ver\":\"" VERSION_SW "\",\"hw_ver\":\"SWGT024-V2.0\"}";
write(socket, response, strlen(response));
}
void send_vlan(int s, int vlan)
{
struct json_object *v;
const char *jstring;
char *header = "HTTP/1.1 200 OK\r\n"
"Content-Type: application/json; charset=UTF-8\r\n\r\n";
v = json_object_new_object();
sprintf(num_buff, "0x%08x", 0x00060011);
json_object_object_add(v, "members", json_object_new_string(num_buff));
write(s, header, strlen(header));
jstring = json_object_to_json_string_ext(v, JSON_C_TO_STRING_PLAIN);
write(s, jstring, strlen(jstring));
json_object_put(v);
}
void send_status(int s)
{
struct json_object *ports, *v;
const char *jstring;
char *header = "HTTP/1.1 200 OK\r\n"
"Content-Type: application/json; charset=UTF-8\r\n\r\n";
time_t now = time(NULL);
now = last_called ? last_called + 1 : now; // Make sure we don't divide by 0 for rates
ports = json_object_new_array_ext(PORTS);
for (int i = 1; i <= PORTS; i++) {
v = json_object_new_object();
json_object_object_add(v, "portNum", json_object_new_int(i));
json_object_object_add(v, "isSFP", json_object_new_int(i < 5 ? 0 : 1));
json_object_object_add(v, "enabled", json_object_new_int((i % 4) ? 1 : 0));
json_object_object_add(v, "link", json_object_new_int(i % 2 ? ((i == 1)? 5 : 2) : 0));
if (i % 2) {
uint64_t rate = (i == 1) ? 2400000000 : 950000000;
txG[i-1] += rate * (now - last_called);
rxG[i-1] += rate * (now - last_called);
txB[i-1] += rate * (now - last_called) / 10000000;
rxB[i-1] += rate * (now - last_called) / 10000000;
}
sprintf(txG_buff, "0x%016lx", txG[i-1]);
sprintf(txB_buff, "0x%016lx", txB[i-1]);
sprintf(rxG_buff, "0x%016lx", rxG[i-1]);
sprintf(rxB_buff, "0x%016lx", rxB[i-1]);
json_object_object_add(v, "txG", json_object_new_string(txG_buff));
json_object_object_add(v, "txB", json_object_new_string(txB_buff));
json_object_object_add(v, "rxG", json_object_new_string(rxG_buff));
json_object_object_add(v, "rxB", json_object_new_string(rxB_buff));
json_object_array_add(ports, v);
}
last_called = now;
write(s, header, strlen(header));
jstring = json_object_to_json_string_ext(ports, JSON_C_TO_STRING_PLAIN);
write(s, jstring, strlen(jstring));
json_object_put(v);
}
void send_eee(int s)
{
struct json_object *ports, *v;
const char *jstring;
char *header = "HTTP/1.1 200 OK\r\n"
"Content-Type: application/json; charset=UTF-8\r\n\r\n";
ports = json_object_new_array_ext(PORTS);
for (int i = 1; i <= PORTS; i++) {
v = json_object_new_object();
json_object_object_add(v, "portNum", json_object_new_int(i));
json_object_object_add(v, "isSFP", json_object_new_int(i < 5 ? 0 : 1));
uint8_t eee = 0;
eee |= 0x02;
char eee_buf[20];
sprintf(eee_buf, "%08b", eee);
json_object_object_add(v, "eee", json_object_new_string(eee_buf));
uint8_t eee_lp = 0;
eee_lp |= 0x04;
sprintf(eee_buf, "%08b", eee_lp);
json_object_object_add(v, "eee_lp", json_object_new_string(eee_buf));
json_object_object_add(v, "active", json_object_new_int((i % 2) ? 1 : 0));
json_object_array_add(ports, v);
}
write(s, header, strlen(header));
jstring = json_object_to_json_string_ext(ports, JSON_C_TO_STRING_PLAIN);
write(s, jstring, strlen(jstring));
json_object_put(ports);
}
void send_mirror(int s)
{
uint16_t mirror_tx, mirror_rx = 0;
char mirror_tx_buf[20];
char mirror_rx_buf[20];
struct json_object *mirror;
const char *jstring;
char *header = "HTTP/1.1 200 OK\r\n"
"Content-Type: application/json; charset=UTF-8\r\n\r\n";
mirror = json_object_new_object();
json_object_object_add(mirror, "mPort", json_object_new_int(1));
json_object_object_add(mirror, "enabled", json_object_new_int(1));
mirror_tx = 0b000110;
mirror_rx = 0b000010;
sprintf(mirror_tx_buf, "%016b", mirror_tx);
sprintf(mirror_rx_buf, "%016b", mirror_rx);
json_object_object_add(mirror, "mirror_tx", json_object_new_string(mirror_tx_buf));
json_object_object_add(mirror, "mirror_rx", json_object_new_string(mirror_rx_buf));
write(s, header, strlen(header));
jstring = json_object_to_json_string_ext(mirror, JSON_C_TO_STRING_PLAIN);
write(s, jstring, strlen(jstring));
json_object_put(mirror);
}
void send_cmd_log(int s)
{
char *header = "HTTP/1.1 200 OK\r\n"
"Content-Type: text/plain; charset=UTF-8\r\n\r\n";
write(s, header, strlen(header));
for (int i = 0; i < cmd_ptr; i++) {
write(s, cmd_history[i], strlen(cmd_history[i]));
write(s, "\n", 1);
printf("%d: %s\n", i, cmd_history[i]);
}
}
void send_config(int s)
{
char *header = "HTTP/1.1 200 OK\r\n"
"Content-Type: text/plain; charset=UTF-8\r\n\r\n";
printf("Sending uploaded config\n");
write(s, header, strlen(header));
printf("Uploaded config len: %d\n", uploaded_config_len);
printf(">%s<", uploaded_config);
write(s, uploaded_config, uploaded_config_len);
}
struct Server serverConstructor(int port, void (*launch)(struct Server *server)) {
struct Server server;
server.domain = AF_INET;
server.service = SOCK_STREAM;
server.port = port;
server.protocol = 0;
server.backlog = 10;
server.address.sin_family = server.domain;
server.address.sin_port = htons(port);
server.address.sin_addr.s_addr = htonl(INADDR_ANY);
server.socket = socket(server.domain, server.service, server.protocol);
if (server.socket < 0) {
perror("Failed to initialize/connect to socket...\n");
exit(EXIT_FAILURE);
}
if (bind(server.socket, (struct sockaddr*)&server.address, sizeof(server.address)) < 0) {
perror("Failed to bind socket...\n");
exit(EXIT_FAILURE);
}
if (listen(server.socket, server.backlog) < 0) {
perror("Failed to start listening...\n");
exit(EXIT_FAILURE);
}
server.launch = launch;
return server;
}
void send_not_found(int socket) {
char *response = "HTTP/1.1 404 Not found\r\n"
"Content-Type: text/html\r\n\r\n"
"<!DOCTYPE html> <html><head><title>Not Found</title></head>"
"<body><h1>Not found!</h1></html>";
write(socket, response, strlen(response));
}
void send_bad_request(int socket) {
char *response = "HTTP/1.1 400 Bad Request\r\n"
"Content-Type: text/html\r\n\r\n"
"<!DOCTYPE html> <html><head><title>Bad Request</title></head>"
"<body><h1>Bad Request!</h1></html>";
write(socket, response, strlen(response));
}
char *scan_header(char *p)
{
while (*p != '\r' || *(p + 1) != '\n' || *(p + 2) != '\r' || *(p + 3) != '\n') {
if (!*p++)
break;
if (*p == '\n' && is_word(p + 1, "Content-Type:"))
content_type = p + 15;
}
if (content_type && is_word(content_type, "multipart/form-data; boundary")) {
printf("Found multiplart\n");
content_type += 30;
uint8_t i = 0;
while (content_type[i] != '\r' && content_type[i] != '\n') {
boundary[i + 2] = content_type[i];
i++;
}
// The boundary between parts is "--" + the boundary given in the header
boundary[0] = '-';
boundary[1] = '-';
boundary[i + 2] = 0;
}
return p;
}
char *skip_boundary(char *p)
{
while (*p) {
if (is_word(p, boundary))
return p + strlen(boundary);
p++;
}
return p;
}
void print_cmd_history(void)
{
for (int i = 0; i < cmd_ptr; i++)
printf("%d: %s\n", i, cmd_history[i]);
}
void launch(struct Server *server)
{
char buffer[BUFFER_SIZE];
FILE *inptr;
last_called = time(NULL);
for (int i=0; i < PORTS; i++)
txG[i] = txB[i] = rxG[i] = rxB[i] = 0;
while (1) {
printf("=== Waiting for connection on port %d === \n", server->port);
int addrlen = sizeof(server->address);
int new_socket = accept(server->socket, (struct sockaddr*)&server->address, (socklen_t*)&addrlen);
ssize_t bytesRead = read(new_socket, buffer, BUFFER_SIZE - 1);
printf("bytesRead: %ld\n", bytesRead);
int filesize = 0;
char *mime;
if (bytesRead > 0) {
buffer[bytesRead] = '\0'; // Null terminate the string
puts(buffer);
if (is_word(buffer, "GET")) {
printf("GET request\n");
if (!strncmp(&buffer[4], "/status.json", 12)) {
printf("Status request\n");
send_status(new_socket);
goto done;
}
if (!strncmp(&buffer[4], "/eee.json", 9)) {
printf("EEE request\n");
send_eee(new_socket);
goto done;
}
if (!strncmp(&buffer[4], "/information.json", 17)) {
printf("Status request\n");
send_basic_info(new_socket);
goto done;
}
if (!strncmp(&buffer[4], "/mirror.json", 12)) {
printf("Mirror request\n");
send_mirror(new_socket);
goto done;
}
if (!strncmp(&buffer[4], "/vlan.json?vid=", 15)) {
int vlan = atoi(&buffer[19]);
printf("VLAN request for %d\n", vlan);
send_vlan(new_socket, vlan);
goto done;
}
if (!strncmp(&buffer[4], "/cmd_log", 8)) {
printf("Request cmd_log\n");
send_cmd_log(new_socket);
goto done;
}
if (!strncmp(&buffer[4], "/config ", 8) && uploaded_config) {
printf("Request current config.\n");
send_config(new_socket);
goto done;
}
int i = 0;
while (!isspace(buffer[4 + i]))
i++;
buffer[4+i] = '\0';
printf("Serving file: >%s<, name length %d\n", &buffer[5], i);
if (i > 1)
inptr = fopen(&buffer[5], "rb");
else
inptr = fopen("/index.html", "rb");
if (inptr == NULL) {
printf("Cannot open input file %s\n", &buffer[5]);
send_not_found(new_socket);
goto done;
}
mime = getMime(&buffer[5]);
printf("MIME type: %s\n", mime);
fseek(inptr, 0L, SEEK_END);
filesize = ftell(inptr);
printf("Filesize: %d\n", filesize);
rewind(inptr);
printf("Input file size: %d\n", filesize);
if (filesize > BUFFER_SIZE) {
printf("File too large.\n");
goto done;
}
size_t bytes_read = fread(buffer, 1, sizeof(buffer), inptr);
printf("Bytes read: %ld\n", bytes_read);
if (bytes_read != filesize) {
printf("Error reading input file.\n");
goto done;
}
fclose(inptr);
} else if (is_word(buffer, "POST")) {
printf("POST request\n");
// Find end of request header
char *p = buffer;
boundary[0] ='\0';
p = scan_header(p);
printf("Boundary: >%s<\n", boundary);
if (!*p || !content_type) {
printf("Bad request, no content type!\n");
send_bad_request(new_socket);
goto done;
}
printf("Bytes read %ld\n", bytesRead);
if (is_word(&buffer[5], "/cmd")) {
printf("POST cmd\n");
printf("CMD: %s\n", p + 4);
strcpy(cmd_history[cmd_ptr], p + 4);
// cmd_history[cmd_ptr][strlen(cmd_history[cmd_ptr]) -2] = '\0';
cmd_ptr++;
print_cmd_history();
char *response = "HTTP/1.1 200 OK\r\n"
"Content-Type: text/html\r\n\r\n"
"<!DOCTYPE html> <html><head><title>Upload OK</title></head>"
"<body><h1>Command executed successully</h1></html>";
write(new_socket, response, strlen(response));
goto done;
} else if (is_word(&buffer[5], "/upload") || is_word(&buffer[5], "/config")) {
printf("POST upload/config request\n");
bool config_upload = false;
if (is_word(&buffer[5], "/config"))
config_upload = true;
if (!boundary[0]) {
printf("Bad request, no boundary!\n");
send_bad_request(new_socket);
goto done;
}
// We skip the intial parts as part of the header
do {
p = skip_boundary(p);
if (!*p)
goto bad_request;
p = scan_header(p);
if (!*p || !content_type)
goto bad_request;
} while (!is_word(content_type, "application/octet-stream"));
printf("Have content: >%s<\n", content_type);
p += 4; // Skip \r\n\r\n after content type
char *uptr = upload_buffer;
int bindex = 0;
int bptr = p - buffer;
do {
if (bptr >= bytesRead) {
bptr = 0;
bytesRead = read(new_socket, buffer, BUFFER_SIZE - 1);
printf("bytesRead: %ld\n", bytesRead);
if (!bytesRead)
break;
}
if (!boundary[bindex])
break;
if (buffer[bptr] == boundary[bindex]) {
bptr++;
bindex++;
} else {
for (int i = 0; i < bindex; i++)
*uptr++ = boundary[i];
*uptr++ = buffer[bptr++];
bindex = 0;
}
} while(1);
printf("Done reading\n");
printf("%s", upload_buffer);
if (!bindex || boundary[bindex])
goto bad_request;
char *response = "HTTP/1.1 200 OK\r\n"
"Content-Type: text/html\r\n\r\n"
"<!DOCTYPE html> <html><head><title>Upload OK</title></head>"
"<body><h1>File uploaded successully</h1></html>";
write(new_socket, response, strlen(response));
if (config_upload) {
uploaded_config_len = (uptr - upload_buffer);
if (uploaded_config)
free (uploaded_config);
uploaded_config = malloc(uploaded_config_len + 1);
memcpy(uploaded_config, upload_buffer, uploaded_config_len);
}
goto done;
}
}
char *response = "HTTP/1.1 200 OK\r\n"
"Content-Type: ";
write(new_socket, response, strlen(response));
write(new_socket, mime, strlen(mime));
response = "; charset=UTF-8\r\n\r\n";
write(new_socket, response, strlen(response));
if (filesize)
write(new_socket, buffer, filesize);
} else if (bytesRead == 0) {
printf("EOF\n");
continue;
} else {
perror("Error reading buffer, nothing read...\n");
}
done:
close(new_socket);
continue;
bad_request:
printf("Bad request!\n");
send_bad_request(new_socket);
close(new_socket);
}
}
int main()
{
// Make sure we can handle writes to a dead client without a signal handler
signal(SIGPIPE, SIG_IGN);
struct Server server = serverConstructor(8080, launch);
server.launch(&server);
return 0;
}
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