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httpsget.c
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137 lines (109 loc) · 3.4 KB
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <errno.h>
#include <ctype.h>
#include "ssl.h"
char request[65536];
char response[65536];
char buffer[4096];
int main(int argc, char **argv)
{
int client_fd;
struct sockaddr_in server_addr;
struct hostent *host_entry;
char *hostname = NULL;
char *path = NULL;
int port = 0;
int bytes_sent, bytes_received;
int total_received = 0;
int status_code;
char *html_body;
int i;
// デフォルト値のリセット（オプション処理後）
hostname = "www.yahoo.co.jp";
path = "/";
port = 443;
if (argc >= 2) {
hostname = argv[1];
}
if (argc >= 3) {
path = argv[2];
}
printf("Connecting to %s:%d%s\n", hostname, port, path);
// ホスト名の解決
host_entry = gethostbyname(hostname);
if (host_entry == NULL) {
printf("gethostbyname() failed for %s\n", hostname);
return 1;
}
printf("Host resolved to: %s\n", inet_ntoa(*(struct in_addr*)host_entry->h_addr_list[0]));
// ソケットの作成
client_fd = socket(AF_INET, SOCK_STREAM, 0);
if (client_fd < 0) {
perror("socket() failed");
return 1;
}
printf("Socket created successfully\n");
// サーバーアドレスの設定
memset(&server_addr, 0, sizeof(server_addr));
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(port);
memcpy(&server_addr.sin_addr, host_entry->h_addr_list[0], host_entry->h_length);
// サーバーに接続
if (connect(client_fd, (struct sockaddr*)&server_addr, sizeof(server_addr)) < 0) {
perror("connect() failed");
close(client_fd);
return 1;
}
printf("Connected to server successfully\n");
SSL_CTX *ssl_ctx = ssl_ctx_new(SSL_SERVER_VERIFY_LATER, SSL_DEFAULT_CLNT_SESS);
SSL_EXTENSIONS *ext = ssl_ext_new();
SSL *ssl_sock = ssl_client_new(ssl_ctx, client_fd, NULL, 0, ext);
int r = ssl_handshake_status(ssl_sock);
printf("Handshake status: %d\n", r);
// HTTP GETリクエストの作成
snprintf(request, sizeof(request),
"GET %s HTTP/1.0\r\n"
"Host: %s\r\n"
"User-Agent: X68000-HTTPS-Client/1.0\r\n"
"Accept: */*\r\n"
"Connection: close\r\n"
"\r\n",
path, hostname);
printf("Sending HTTP request:\n");
printf("--------------------\n");
printf("%s", request);
printf("--------------------\n\n");
// HTTPリクエストを送信
bytes_sent = ssl_write(ssl_sock, request, strlen(request));
if (bytes_sent < 0) {
perror("send() failed");
close(client_fd);
return 1;
}
printf("Sent %d bytes\n", bytes_sent);
printf("Receiving HTTP response...\n\n");
// HTTPレスポンスを受信してバッファに蓄積
memset(response, 0, sizeof(response));
total_received = 0;
// bytes_received = recv(client_fd, buffer, sizeof(buffer), 0);
uint8_t *ptr;
int res;
while (1) {
res = ssl_read(ssl_sock, &ptr);
if (res < 0) {
break;
}
// printf("Received %d bytes\n", res);
write(1, ptr, res);
}
ssl_free(ssl_sock);
ssl_ctx_free(ssl_ctx);
return 0;
}