mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-11-18 09:19:17 +01:00
8d5d3777c0
This change is mainly for WiiFlow, but it doesn't hurt to include it here too.
620 lines
18 KiB
C
620 lines
18 KiB
C
/*
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Code by blackb0x @ GBAtemp.net
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This allows the Wii to download from servers that use SNI.
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*/
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#include <network.h>
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#include <ogc/lwp_watchdog.h>
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#include "../svnrev.h"
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#include "gecko.h"
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#include "https.h"
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#include "prompts/ProgressWindow.h"
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#include "settings/ProxySettings.h"
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#include "utils/base64.h"
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u8 loop;
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WOLFSSL_SESSION *session;
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int https_write(HTTP_INFO *httpinfo, char *buffer, int len, bool proxy)
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{
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int ret, pos = 0;
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int rlen = len > BLOCK_SIZE ? BLOCK_SIZE : len;
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u64 time = gettime();
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while (ticks_to_millisecs(diff_ticks(time, gettime())) < READ_WRITE_TIMEOUT)
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{
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if (httpinfo->use_https && !proxy)
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ret = wolfSSL_write(httpinfo->ssl, &buffer[pos], rlen);
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else
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ret = net_write(httpinfo->sock, &buffer[pos], rlen);
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if (ret > 0)
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{
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pos += ret;
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rlen = len - pos > BLOCK_SIZE ? BLOCK_SIZE : len - pos;
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if (pos >= len)
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return pos;
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time = gettime();
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}
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usleep(10000);
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}
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#ifdef DEBUG_NETWORK
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gprintf("The connection timed out (write)\n");
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#endif
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return -ETIMEDOUT;
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}
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int https_read(HTTP_INFO *httpinfo, char *buffer, int len, bool proxy)
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{
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int ret = -ETIMEDOUT;
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u64 time = gettime();
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if (len > BLOCK_SIZE)
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len = BLOCK_SIZE;
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while (ticks_to_millisecs(diff_ticks(time, gettime())) < READ_WRITE_TIMEOUT)
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{
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if (httpinfo->use_https && !proxy)
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ret = wolfSSL_read(httpinfo->ssl, buffer, len);
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else
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ret = net_read(httpinfo->sock, buffer, len);
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if (ret >= 0)
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return ret;
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usleep(10000);
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}
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#ifdef DEBUG_NETWORK
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gprintf("The connection timed out (read)\n");
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#endif
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return -ETIMEDOUT;
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}
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int send_callback(__attribute__((unused)) WOLFSSL *ssl, char *buf, int sz, void *ctx)
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{
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int sent = net_write(*(int *)ctx, buf, sz);
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if (sent < 0)
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{
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if (sent == -EAGAIN)
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return WOLFSSL_CBIO_ERR_WANT_WRITE;
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else if (sent == -ECONNRESET)
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return WOLFSSL_CBIO_ERR_CONN_RST;
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else if (sent == -EINTR)
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return WOLFSSL_CBIO_ERR_ISR;
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else if (sent == -EPIPE)
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return WOLFSSL_CBIO_ERR_CONN_CLOSE;
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else
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return WOLFSSL_CBIO_ERR_GENERAL;
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}
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return sent;
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}
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int recv_callback(__attribute__((unused)) WOLFSSL *ssl, char *buf, int sz, void *ctx)
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{
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int recvd = net_read(*(int *)ctx, buf, sz);
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if (recvd < 0)
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{
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if (recvd == -EAGAIN)
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return WOLFSSL_CBIO_ERR_WANT_READ;
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else if (recvd == -ECONNRESET)
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return WOLFSSL_CBIO_ERR_CONN_RST;
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else if (recvd == -EINTR)
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return WOLFSSL_CBIO_ERR_ISR;
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else if (recvd == -ECONNABORTED)
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return WOLFSSL_CBIO_ERR_CONN_CLOSE;
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else
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return WOLFSSL_CBIO_ERR_GENERAL;
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}
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else if (recvd == 0)
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return WOLFSSL_CBIO_ERR_CONN_CLOSE;
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return recvd;
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}
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void https_close(HTTP_INFO *httpinfo)
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{
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if (httpinfo->use_https)
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{
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wolfSSL_shutdown(httpinfo->ssl);
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wolfSSL_free(httpinfo->ssl);
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wolfSSL_CTX_free(httpinfo->ctx);
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}
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net_close(httpinfo->sock);
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#ifdef DEBUG_NETWORK
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gprintf("Closed socket and cleaned up\n");
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#endif
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}
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bool get_header_value(struct phr_header *headers, size_t num_headers, char *dst, char *header)
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{
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for (size_t i = 0; i != num_headers; ++i)
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{
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if (strncasecmp(header, headers[i].name, headers[i].name_len) == 0)
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{
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strlcpy(dst, headers[i].value, headers[i].value_len + 1);
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return true;
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}
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}
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return false;
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}
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u64 get_header_value_int(struct phr_header *headers, size_t num_headers, char *header)
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{
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char header_value[30];
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if (!get_header_value(headers, num_headers, header_value, header))
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return 0;
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return strtoull(header_value, NULL, 0);
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}
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bool is_chunked(struct phr_header *headers, size_t num_headers)
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{
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char encoding[9];
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if (!get_header_value(headers, num_headers, encoding, "transfer-encoding"))
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return false;
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return (strcasecmp(encoding, "chunked") == 0);
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}
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bool read_chunked(HTTP_INFO *httpinfo, struct download *buffer, size_t start_pos)
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{
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struct phr_chunked_decoder decoder = {0};
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size_t rsize, capacity = 4096;
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ssize_t pret;
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int ret;
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decoder.consume_trailer = true;
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#ifdef DEBUG_NETWORK
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gprintf("Data is chunked\n");
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#endif
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do
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{
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if (buffer->show_progress)
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{
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if (ProgressCanceled())
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return false;
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ShowProgress(start_pos, capacity); // Unknown size for chunked transfers
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}
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if (start_pos == capacity)
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{
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#ifdef DEBUG_NETWORK
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gprintf("Increased buffer size\n");
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#endif
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capacity *= 2;
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buffer->data = MEM2_realloc(buffer->data, capacity);
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if (!buffer->data) // A custom theme is using too much memory
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{
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#ifdef DEBUG_NETWORK
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gprintf("Out of memory!\n");
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#endif
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errno = ENOMEM;
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return false;
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}
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}
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if ((ret = https_read(httpinfo, &buffer->data[start_pos], capacity - start_pos, false)) < 1)
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return false;
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rsize = ret;
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pret = phr_decode_chunked(&decoder, &buffer->data[start_pos], &rsize);
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if (pret == -1)
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{
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#ifdef DEBUG_NETWORK
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gprintf("Parse error\n");
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#endif
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return false;
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}
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start_pos += rsize;
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} while (pret == -2);
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buffer->size = start_pos;
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buffer->data = MEM2_realloc(buffer->data, buffer->size);
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return true;
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}
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bool read_all(HTTP_INFO *httpinfo, struct download *buffer, size_t start_pos)
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{
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size_t capacity = 4096;
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int ret;
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#ifdef DEBUG_NETWORK
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gprintf("Data is not chunked\n");
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#endif
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while (true)
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{
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if (buffer->show_progress)
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{
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if (ProgressCanceled())
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return false;
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ShowProgress(start_pos, buffer->content_length);
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}
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if (start_pos == capacity)
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{
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#ifdef DEBUG_NETWORK
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gprintf("Increased buffer size\n");
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#endif
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capacity *= 2;
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buffer->data = MEM2_realloc(buffer->data, capacity);
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if (!buffer->data) // A custom theme is using too much memory
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{
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#ifdef DEBUG_NETWORK
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gprintf("Out of memory!\n");
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#endif
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errno = ENOMEM;
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return false;
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}
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}
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if ((ret = https_read(httpinfo, &buffer->data[start_pos], capacity - start_pos, false)) == 0)
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break;
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if (ret < 0)
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return false;
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start_pos += ret;
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};
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buffer->size = start_pos;
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buffer->data = MEM2_realloc(buffer->data, buffer->size);
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return (buffer->content_length > 0 && buffer->content_length == start_pos);
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}
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bool get_response(HTTP_INFO *httpinfo, HTTP_RESPONSE *resp, bool proxy)
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{
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int rret, minor_version;
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size_t msg_len, prevbuflen;
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const char *msg;
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while (true)
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{
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if ((rret = https_read(httpinfo, &resp->data[resp->buflen], 1, proxy)) < 1)
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return false;
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prevbuflen = resp->buflen;
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resp->buflen += rret;
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// Parse the response
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resp->num_headers = sizeof(resp->headers) / sizeof(resp->headers[0]);
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if ((resp->pret = phr_parse_response(resp->data, resp->buflen, &minor_version, &resp->status, &msg, &msg_len,
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resp->headers, &resp->num_headers, prevbuflen)) > 0)
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return true;
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else if (resp->pret == -1)
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{
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#ifdef DEBUG_NETWORK
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gprintf("pret error %i\n", resp->pret);
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#endif
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return false;
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}
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if (resp->buflen == sizeof(resp->data))
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{
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#ifdef DEBUG_NETWORK
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gprintf("buflen error %lu\n", (unsigned long)resp->buflen);
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#endif
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return false;
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}
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}
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return false;
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}
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bool check_ip(char *str)
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{
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int partA, partB, partC, partD;
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char extra;
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// We avoid using regex because it increases the file size
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return (sscanf(str, "%d.%d.%d.%d%c", &partA, &partB, &partC, &partD, &extra) == 4);
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}
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bool connect_proxy(HTTP_INFO *httpinfo, char *host, char *username, char *password)
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{
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HTTP_RESPONSE response = {0};
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char request[500];
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char credentials[66];
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char *auth;
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int len;
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if (username && password)
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{
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if (!snprintf(credentials, sizeof(credentials), "%s:%s", username, password))
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return false;
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if (!(auth = base64(credentials, strlen(credentials), &len)))
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return false;
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len = snprintf(request, sizeof(request),
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"CONNECT %s:%i HTTP/1.1\r\nProxy-Authorization: Basic %s\r\nUser-Agent: curl/7.55.1\r\n\r\n",
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host, httpinfo->use_https ? 443 : 80, auth);
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MEM2_free(auth);
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}
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else
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len = snprintf(request, sizeof(request),
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"CONNECT %s:%i HTTP/1.1\r\nUser-Agent: curl/7.55.1\r\n\r\n",
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host, httpinfo->use_https ? 443 : 80);
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if (len > 0 && https_write(httpinfo, request, len, true) != len)
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return false;
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if (get_response(httpinfo, &response, true))
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{
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if (response.status == 200)
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return true;
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}
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return false;
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}
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int connect(char *host, u16 port)
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{
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struct sockaddr_in sin;
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s32 sock, ret;
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u32 ipaddress;
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u64 time;
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#ifdef DEBUG_NETWORK
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gprintf("Connecting to %s", host);
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#endif
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if ((ipaddress = check_ip(host) ? inet_addr(host) : getipbynamecached(host)) == 0)
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return -EFAULT;
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sin.sin_family = AF_INET;
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sin.sin_port = htons(port);
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sin.sin_addr.s_addr = ipaddress;
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#ifdef DEBUG_NETWORK
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if (!check_ip(host))
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gprintf(" (%s)", inet_ntoa(sin.sin_addr));
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#endif
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if ((sock = net_socket(AF_INET, SOCK_STREAM, IPPROTO_IP)) < 0)
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return sock;
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net_fcntl(sock, F_SETFL, 4);
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time = gettime();
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while (ticks_to_millisecs(diff_ticks(time, gettime())) < CONNECT_TIMEOUT)
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{
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if ((ret = net_connect(sock, (struct sockaddr *)&sin, sizeof(sin))) < 0)
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{
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if (ret == -EISCONN)
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return sock;
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if (ret == -EINPROGRESS || ret == -EALREADY)
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{
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usleep(10000);
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continue;
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}
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net_close(sock);
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return ret;
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}
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}
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net_close(sock);
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return -ETIMEDOUT;
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}
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void downloadfile(const char *url, struct download *buffer)
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{
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HTTP_INFO httpinfo = {0};
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// Always reset the size due to the image downloader looping
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buffer->size = 0;
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// Check if we're using HTTPS and set the path
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char *path;
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if (strncmp(url, "https://", 8) == 0)
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{
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httpinfo.use_https = 1;
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path = strchr(url + 8, '/');
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}
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else if (strncmp(url, "http://", 7) == 0)
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{
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httpinfo.use_https = 0;
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path = strchr(url + 7, '/');
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}
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else
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return;
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if (!path)
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return;
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// Get the host
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int domainlength = path - url - 7 - httpinfo.use_https;
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char host[domainlength + 1];
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strlcpy(host, url + 7 + httpinfo.use_https, domainlength + 1);
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// Start connecting
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if (getProxyAddress() && getProxyPort() > 0)
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httpinfo.sock = connect(getProxyAddress(), getProxyPort());
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else
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httpinfo.sock = connect(host, httpinfo.use_https ? 443 : 80);
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if (httpinfo.sock < 0)
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{
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#ifdef DEBUG_NETWORK
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if (httpinfo.sock == -ETIMEDOUT)
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gprintf("\nFailed to connect (timed out)\n");
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else
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gprintf("\nFailed to connect (%i)\n", httpinfo.sock);
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#endif
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return;
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}
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#ifdef DEBUG_NETWORK
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gprintf("\nConnected\n");
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#endif
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// Connect to a web proxy
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if (getProxyAddress() && getProxyPort() > 0)
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{
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if (!connect_proxy(&httpinfo, host, getProxyUsername(), getProxyPassword()))
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{
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#ifdef DEBUG_NETWORK
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gprintf("Failed to connect to proxy (%s:%i)\n", getProxyAddress(), getProxyPort());
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#endif
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https_close(&httpinfo);
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return;
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}
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session = NULL; // Resume doesn't work with a proxy
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#ifdef DEBUG_NETWORK
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gprintf("Proxy is ready to receive\n");
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#endif
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}
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// Setup for HTTPS if it's necessary
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if (httpinfo.use_https)
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{
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// Create a new SSL context
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// wolfSSLv23_client_method() works but TLS 1.2 is slightly faster on Wii
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if ((httpinfo.ctx = wolfSSL_CTX_new(wolfTLSv1_2_client_method())) == NULL)
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{
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#ifdef DEBUG_NETWORK
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gprintf("Failed to create WOLFSSL_CTX\n");
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#endif
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https_close(&httpinfo);
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return;
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}
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// Don't verify certificates
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wolfSSL_CTX_set_verify(httpinfo.ctx, WOLFSSL_VERIFY_NONE, 0);
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// Enable SNI
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if (wolfSSL_CTX_UseSNI(httpinfo.ctx, 0, host, strlen(host)) != WOLFSSL_SUCCESS)
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{
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#ifdef DEBUG_NETWORK
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gprintf("Failed to set SNI\n");
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#endif
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https_close(&httpinfo);
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return;
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}
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// Custom I/O is essential due to how libogc handles errors
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wolfSSL_SetIOSend(httpinfo.ctx, send_callback);
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wolfSSL_SetIORecv(httpinfo.ctx, recv_callback);
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// Create a new wolfSSL session
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if ((httpinfo.ssl = wolfSSL_new(httpinfo.ctx)) == NULL)
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{
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#ifdef DEBUG_NETWORK
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gprintf("SSL session creation failed\n");
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#endif
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https_close(&httpinfo);
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return;
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}
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// Set the file descriptor
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if (wolfSSL_set_fd(httpinfo.ssl, httpinfo.sock) != SSL_SUCCESS)
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{
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#ifdef DEBUG_NETWORK
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gprintf("Failed to set SSL file descriptor\n");
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#endif
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https_close(&httpinfo);
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return;
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}
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// Attempt to resume the session
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if (session && wolfSSL_set_session(httpinfo.ssl, session) != SSL_SUCCESS)
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{
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#ifdef DEBUG_NETWORK
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gprintf("Failed to set session (session timed out?)\n");
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#endif
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session = NULL;
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}
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// Initiate a handshake
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u64 time = gettime();
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while (true)
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{
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if (ticks_to_millisecs(diff_ticks(time, gettime())) > CONNECT_TIMEOUT)
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{
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#ifdef DEBUG_NETWORK
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gprintf("SSL handshake failed\n");
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#endif
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https_close(&httpinfo);
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return;
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}
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if (wolfSSL_connect(httpinfo.ssl) == SSL_SUCCESS)
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break;
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usleep(10000);
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}
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// Check if we resumed successfully
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if (session && !wolfSSL_session_reused(httpinfo.ssl))
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{
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#ifdef DEBUG_NETWORK
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gprintf("Failed to resume session\n");
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#endif
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session = NULL;
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}
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// Cipher info
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#ifdef DEBUG_NETWORK
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/*char ciphers[4096];
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wolfSSL_get_ciphers(ciphers, (int)sizeof(ciphers));
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gprintf("All supported ciphers: %s\n", ciphers);*/
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WOLFSSL_CIPHER *cipher = wolfSSL_get_current_cipher(httpinfo.ssl);
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gprintf("Using: %s - %s\n", wolfSSL_get_version(httpinfo.ssl), wolfSSL_CIPHER_get_name(cipher));
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#endif
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}
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// Send our request
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char request[2300];
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char method[5] = "HEAD"; // Get the GameTDB timestamp
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int ret, len;
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if (!buffer->gametdbcheck)
|
|
strcpy(method, "GET");
|
|
len = snprintf(request, sizeof(request),
|
|
"%s %s HTTP/1.1\r\n"
|
|
"Host: %s\r\n"
|
|
"User-Agent: USBLoaderGX/%s\r\n"
|
|
"Connection: close\r\n"
|
|
"Pragma: no-cache\r\n"
|
|
"Cache-Control: no-cache\r\n\r\n",
|
|
method, path, host, GetRev());
|
|
if ((ret = https_write(&httpinfo, request, len, false)) != len)
|
|
{
|
|
#ifdef DEBUG_NETWORK
|
|
gprintf("https_write error: %i\n", ret);
|
|
#endif
|
|
https_close(&httpinfo);
|
|
return;
|
|
}
|
|
// Check if we want a response
|
|
if (buffer->skip_response)
|
|
{
|
|
#ifdef DEBUG_NETWORK
|
|
gprintf("Sent request to %s and skipping response\n", host);
|
|
#endif
|
|
https_close(&httpinfo);
|
|
return;
|
|
}
|
|
// Get the response
|
|
HTTP_RESPONSE response = {0};
|
|
if (!get_response(&httpinfo, &response, false))
|
|
{
|
|
https_close(&httpinfo);
|
|
return;
|
|
}
|
|
// The website wants to redirect us
|
|
if (response.status == 301 || response.status == 302)
|
|
{
|
|
https_close(&httpinfo);
|
|
if (loop == REDIRECT_LIMIT)
|
|
{
|
|
#ifdef DEBUG_NETWORK
|
|
gprintf("Reached redirect limit\n");
|
|
#endif
|
|
return;
|
|
}
|
|
loop++;
|
|
char location[2049];
|
|
if (!get_header_value(response.headers, response.num_headers, location, "location"))
|
|
return;
|
|
#ifdef DEBUG_NETWORK
|
|
gprintf("Redirect #%i - %s\n", loop, location);
|
|
#endif
|
|
downloadfile(location, buffer);
|
|
return;
|
|
}
|
|
// It's not 301 or 302, so reset the loop
|
|
loop = 0;
|
|
// Exit if it's a GameTDB HEAD request
|
|
if (buffer->gametdbcheck)
|
|
{
|
|
buffer->gametdbcheck = get_header_value_int(response.headers, response.num_headers, "x-gametdb-timestamp");
|
|
https_close(&httpinfo);
|
|
return;
|
|
}
|
|
// We got what we wanted
|
|
if (response.status == 200)
|
|
{
|
|
buffer->data = MEM2_alloc(4096);
|
|
memcpy(buffer->data, &response.data[response.pret], response.buflen - response.pret);
|
|
// Determine how to read the data
|
|
bool dl_valid;
|
|
if (is_chunked(response.headers, response.num_headers))
|
|
dl_valid = read_chunked(&httpinfo, buffer, response.buflen - response.pret);
|
|
else
|
|
{
|
|
buffer->content_length = get_header_value_int(response.headers, response.num_headers, "content-length");
|
|
dl_valid = read_all(&httpinfo, buffer, response.buflen - response.pret);
|
|
}
|
|
// Check if the download is incomplete
|
|
if (!dl_valid || buffer->size < 1)
|
|
{
|
|
buffer->size = 0;
|
|
MEM2_free(buffer->data);
|
|
#ifdef DEBUG_NETWORK
|
|
gprintf("Removed incomplete download\n");
|
|
#endif
|
|
https_close(&httpinfo);
|
|
return;
|
|
}
|
|
// Save the session
|
|
if (httpinfo.use_https)
|
|
session = wolfSSL_get_session(httpinfo.ssl);
|
|
// Finished
|
|
https_close(&httpinfo);
|
|
#ifdef DEBUG_NETWORK
|
|
gprintf("Download size: %llu\n", (long long)buffer->size);
|
|
gprintf("------------- HEADERS -------------\n");
|
|
for (size_t i = 0; i != response.num_headers; ++i)
|
|
gprintf("%.*s: %.*s\n", (int)response.headers[i].name_len, response.headers[i].name,
|
|
(int)response.headers[i].value_len, response.headers[i].value);
|
|
gprintf("------------ COMPLETED ------------\n");
|
|
#endif
|
|
return;
|
|
}
|
|
// Close on all other status codes
|
|
#ifdef DEBUG_NETWORK
|
|
gprintf("Status code: %i - %s\n", response.status, url);
|
|
#endif
|
|
https_close(&httpinfo);
|
|
}
|