TermiNexus
ac3e235406
- download.vp: Content-Range 探测总大小，threads=1 串行切片 / threads>1 按带并行（≤8 线程），按偏移 Win32 落盘，http/https 按 scheme 分发，切片内跟随重定向 - requests/__init__.vp: 新增原始头/Content-Length/Content-Range 解析 helper 与线程安全 _DlOnce（Range 原语，全 stdlib 分配，不碰 _mbuddy） - requests/https.vp: 镜像 _DlOnce（openssl + verify/ca/SNI/主机名校验）
665 lines
22 KiB
Plaintext
665 lines
22 KiB
Plaintext
import t, c
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from stdint import *
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import string
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import socket
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import stdio
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import stdlib
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import requests
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import openssl
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# ============================================================
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# requests/https.vp — HTTPS 客户端（openssl SSL/TLS + 证书核验）
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#
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# 与 requests（HTTP）同名 API，但走 TLS 并默认校验对端证书：
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# import requests.https as rhttps
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# resp = rhttps.get("https://example.com/", verify=True)
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# if resp is not None:
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# print(resp.status_code)
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# print(resp.text)
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# requests.release(resp)
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#
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# 说明:
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# - verify=True 时校验证书链 + 主机名（hostname 校验 SSL_set1_host），
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# 提供 ca_file 指向 PEM CA bundle；不提供则走系统默认路径
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# （Windows 上通常为空，真实站点会因"无法验证证书链"失败返回 None）。
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# - 失败时返回 None，可用 last_error() 获取原因文本。
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# - 握手成功后可用 last_tls_info() 查看 TLS 版本 / 加密套件 / 对端证书主题。
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# ============================================================
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HTTPS_PORT: t.CDefine = 443
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# 模块内部状态
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_ossl_ready: bool = False
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_socket_ready: bool = False
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_err_store: t.CArray[t.CChar, 512] # 最近一次失败原因（静态缓冲）
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_info_store: t.CArray[t.CChar, 512] # 最近一次成功握手的 TLS 元信息
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_scratch_store: t.CArray[t.CChar, 512] # 临时拼接缓冲
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_last_verify_val: INT = -1 # 最近一次握手后 SSL_get_verify_result（0=通过；-1=未启用）
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_last_verify_flag: INT = -1 # 最近一次请求 verify 标志（1=开启；0=关闭；-1=未知）
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def last_verify_result() -> int:
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"""返回最近一次握手的证书校验结果：0 通过；>0 失败码；-1 未开启校验。"""
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return _last_verify_val
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def last_verify_enabled() -> int:
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"""返回最近一次请求是否开启校验（1=是；0=否；-1=未知）。"""
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return _last_verify_flag
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# ============================================================
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# 内部辅助
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# ============================================================
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def last_error() -> str:
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"""返回最近一次失败的原因文本（无则空串）。"""
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return _err_store
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def last_tls_info() -> str:
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"""返回最近一次成功握手的 TLS 信息（版本/套件/对端主题），无则空串。"""
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return _info_store
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def _RecordErrorText(text: str):
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"""把失败原因写入静态缓冲 _err_store。"""
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if text is None: return
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_err_store[0] = 0
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stdio.snprintf(_err_store, 512, "%s", text)
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def _RecordInfoText(text: str):
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"""把 TLS 元信息写入静态缓冲 _info_store。"""
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if text is None: return
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_info_store[0] = 0
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stdio.snprintf(_info_store, 512, "%s", text)
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def _EnsureReady() -> INT:
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"""初始化 socket 与 openssl（均幂等）。"""
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global _socket_ready, _ossl_ready
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if not _socket_ready:
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if socket.SocketInit() != 0:
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_RecordErrorText("socket init failed")
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return -1
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_socket_ready = True
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if not _ossl_ready:
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if openssl.OPENSSL_init_ssl(0, None) != 1:
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_RecordErrorText("OPENSSL_init_ssl failed")
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return -1
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_ossl_ready = True
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return 0
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def _ParseHttpsUrl(url: str, host_buf: str, host_size: INT, path_buf: str, path_size: INT, port: INT | t.CPtr) -> INT:
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"""解析 https://host[:port][/path]，端口缺省 443。"""
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if url is None: return -1
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if host_buf is None or path_buf is None or port is None: return -1
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p: str = url
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# Skip "https://"（8 字节）
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if string.strncmp(p, "https://", 8) == 0:
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p += 8
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# Parse host
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host_start: str = p
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host_len: INT = 0
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while p[0] != '\0' and p[0] != ':' and p[0] != '/':
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host_len += 1
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p += 1
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if host_len == 0 or host_len >= host_size: return -1
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string.strncpy(host_buf, host_start, host_len)
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host_buf[host_len] = 0
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# Parse port
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if p[0] == ':':
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p += 1
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port_val: INT = 0
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while p[0] >= '0' and p[0] <= '9':
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port_val = port_val * 10 + INT(p[0] - '0')
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p += 1
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c.DerefAs(port, port_val)
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else:
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c.DerefAs(port, HTTPS_PORT)
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# Parse path
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if p[0] == '/':
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path_start: str = p
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path_len: INT = 0
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while p[0] != '\0':
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path_len += 1
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p += 1
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if path_len >= path_size: return -1
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string.strncpy(path_buf, path_start, path_len)
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path_buf[path_len] = 0
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else:
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if path_size < 2: return -1
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path_buf[0] = '/'
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path_buf[1] = 0
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return 0
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def _ScratchBuf() -> str:
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"""返回静态拼接缓冲（512B，复用）。"""
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return _scratch_store
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def _TlsErrText():
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"""把最近一次 openssl 错误队列文本写入静态 scratch 缓冲。"""
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e: t.CUInt32T = openssl.ERR_get_error()
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if e == 0:
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_scratch_store[0] = 0
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string.strncpy(_scratch_store, "openssl error (no detail)", 26)
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return
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openssl.ERR_error_string_n(e, _scratch_store, 512)
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# ============================================================
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# 核心请求
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# ============================================================
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def _HttpsRequest(method: str, url: str, verify: bool, ca_file: str, data: str, content_type: str) -> requests.Response | t.CPtr:
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"""HTTPS GET/POST 核心实现。
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verify=False 时跳过证书链/主机名校验（不推荐）；verify=True 时
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ca_file 提供 PEM CA bundle，否则使用系统默认 CA 路径。
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"""
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global _last_verify_val, _last_verify_flag
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if requests._mbuddy is None: return None
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_last_verify_flag = 1 if verify else 0
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resp: requests.Response | t.CPtr = requests.create_response()
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if resp is None: return None
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if _EnsureReady() != 0:
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requests.release(resp)
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return None
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# 临时缓冲（错误文本格式化；openssl 详情走模块级 scratch）
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errmsg: str = requests._mbuddy.alloc(512)
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if errmsg is None:
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requests.release(resp)
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return None
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# ---- 解析 URL ----
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host_buf: t.CArray[t.CChar, 256]
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path_buf: t.CArray[t.CChar, 1024]
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port: INT = 0
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if _ParseHttpsUrl(url, host_buf, 256, path_buf, 1024, c.Addr(port)) != 0:
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stdio.snprintf(errmsg, 512, "bad https url: %s", url)
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_RecordErrorText(errmsg)
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requests._mbuddy.free(errmsg)
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requests.release(resp)
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return None
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# ---- 建立 TCP 连接 ----
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sock = socket.Socket(socket.AF_INET, socket.SOCK_STREAM)
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if sock.fd == socket.INVALID_SOCKET:
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_RecordErrorText("socket() failed")
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requests._mbuddy.free(errmsg)
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requests.release(resp)
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return None
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if sock.connect(host_buf, port) != 0:
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stdio.snprintf(errmsg, 512, "connect %s:%d failed", host_buf, port)
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_RecordErrorText(errmsg)
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sock.close()
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requests._mbuddy.free(errmsg)
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requests.release(resp)
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return None
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# ---- SSL_CTX / SSL ----
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ctx: openssl.SslCtxPtr = openssl.SSL_CTX_new(openssl.TLS_client_method())
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if ctx is None:
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_RecordErrorText("SSL_CTX_new failed")
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sock.close()
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requests._mbuddy.free(errmsg)
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requests.release(resp)
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return None
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if verify:
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openssl.SSL_CTX_set_verify(ctx, openssl.SslVerifyPeer, None)
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if ca_file is not None and ca_file[0] != 0:
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if openssl.SSL_CTX_load_verify_locations(ctx, ca_file, None) != 1:
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_TlsErrText()
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stdio.snprintf(errmsg, 512, "load CA file failed: %s (%s)", ca_file, _ScratchBuf())
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_RecordErrorText(errmsg)
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openssl.SSL_CTX_free(ctx)
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sock.close()
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requests._mbuddy.free(errmsg)
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requests.release(resp)
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return None
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else:
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# 系统默认路径（Windows 上通常为空，证书链校验将失败）
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openssl.SSL_CTX_set_default_verify_paths(ctx)
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else:
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openssl.SSL_CTX_set_verify(ctx, openssl.SslVerifyNone, None)
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ssl: openssl.SslPtr = openssl.SSL_new(ctx)
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if ssl is None:
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_RecordErrorText("SSL_new failed")
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openssl.SSL_CTX_free(ctx)
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sock.close()
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requests._mbuddy.free(errmsg)
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requests.release(resp)
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return None
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openssl.SSL_set_fd(ssl, sock.fd)
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# SNI（SSL_set_tlsext_host_name 是宏 → 直接 SSL_ctrl）
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openssl.SSL_ctrl(ssl, openssl.SslCtrlSetTlsextHostname, openssl.TlsextNametypeHostName, host_buf)
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# 主机名校验（TLS 内核对证书 SAN/CN 与 host 比对）
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if verify:
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openssl.SSL_set1_host(ssl, host_buf)
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# ---- 握手 ----
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hret: INT = openssl.SSL_connect(ssl)
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if hret <= 0:
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want: INT = openssl.SSL_get_error(ssl, hret)
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_TlsErrText()
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stdio.snprintf(errmsg, 512, "SSL_connect failed (want=%d): %s", want, _ScratchBuf())
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_RecordErrorText(errmsg)
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openssl.SSL_free(ssl)
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openssl.SSL_CTX_free(ctx)
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sock.close()
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requests._mbuddy.free(errmsg)
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requests.release(resp)
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return None
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# ---- 记录最近一次证书校验结果（供 last_verify_result 查询）----
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if verify:
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_last_verify_val = INT(openssl.SSL_get_verify_result(ssl))
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else:
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_last_verify_val = -1
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# ---- 证书链校验结果复核 ----
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if verify:
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vres: t.CInt32T = openssl.SSL_get_verify_result(ssl)
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if vres != 0:
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reason: str = openssl.X509_verify_cert_error_string(vres)
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if reason is None:
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stdio.snprintf(errmsg, 512, "SSL certificate verify failed: error %d", INT(vres))
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else:
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stdio.snprintf(errmsg, 512, "SSL certificate verify failed (%d): %s", INT(vres), reason)
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_RecordErrorText(errmsg)
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openssl.SSL_free(ssl)
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openssl.SSL_CTX_free(ctx)
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sock.close()
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requests._mbuddy.free(errmsg)
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requests.release(resp)
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return None
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# ---- 记录 TLS 元信息（版本 / 套件 / 对端证书主题）----
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name_buf: str = requests._mbuddy.alloc(512)
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if name_buf is not None:
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peer: openssl.X509Ptr = openssl.SSL_get1_peer_certificate(ssl)
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if peer is not None:
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subj: openssl.X509NamePtr = openssl.X509_get_subject_name(peer)
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if subj is not None:
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name_buf[0] = 0
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openssl.X509_NAME_oneline(subj, name_buf, 512)
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name_buf[511] = 0
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openssl.X509_free(peer)
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else:
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name_buf[0] = 0
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string.strncpy(name_buf, "(no peer certificate)", 21)
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name_buf[21] = 0
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ver: str = openssl.SSL_get_version(ssl)
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cipher: str = openssl.SSL_CIPHER_get_name(openssl.SSL_get_current_cipher(ssl))
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stdio.snprintf(errmsg, 512, "%s | cipher %s | peer: %s",
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ver if ver is not None else "?", cipher if cipher is not None else "?", name_buf)
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_RecordInfoText(errmsg)
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requests._mbuddy.free(name_buf)
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# ---- 组请求头并发送 ----
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req_buf: str = requests._mbuddy.alloc(requests.HTTP_BUFSIZ)
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if req_buf is None:
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_RecordErrorText("alloc request buffer failed")
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openssl.SSL_free(ssl)
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openssl.SSL_CTX_free(ctx)
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sock.close()
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requests._mbuddy.free(errmsg)
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requests.release(resp)
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return None
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body_len: INT = 0
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is_post: bool = string.strcmp(method, "POST") == 0
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if is_post:
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body_len = INT(string.strlen(data)) if data is not None else 0
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ct: str = content_type if content_type is not None else "application/x-www-form-urlencoded"
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stdio.snprintf(req_buf, requests.HTTP_BUFSIZ,
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"POST %s HTTP/1.1\r\nHost: %s\r\nContent-Type: %s\r\nContent-Length: %d\r\nAccept-Encoding: gzip\r\nConnection: close\r\n\r\n",
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path_buf, host_buf, ct, body_len)
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else:
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stdio.snprintf(req_buf, requests.HTTP_BUFSIZ,
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"GET %s HTTP/1.1\r\nHost: %s\r\nAccept-Encoding: gzip\r\nConnection: close\r\n\r\n",
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path_buf, host_buf)
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hdr_len: INT = INT(string.strlen(req_buf))
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sent: INT = openssl.SSL_write(ssl, req_buf, hdr_len)
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if sent <= 0:
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_TlsErrText()
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stdio.snprintf(errmsg, 512, "SSL_write header failed: %s", _ScratchBuf())
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_RecordErrorText(errmsg)
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requests._mbuddy.free(req_buf)
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openssl.SSL_free(ssl)
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openssl.SSL_CTX_free(ctx)
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sock.close()
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requests._mbuddy.free(errmsg)
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requests.release(resp)
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return None
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if is_post and body_len > 0 and data is not None:
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openssl.SSL_write(ssl, data, body_len)
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requests._mbuddy.free(req_buf)
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# ---- 接收响应 ----
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resp_buf: str = requests._mbuddy.alloc(requests.HTTP_BUFSIZ)
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if resp_buf is None:
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_RecordErrorText("alloc response buffer failed")
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openssl.SSL_free(ssl)
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openssl.SSL_CTX_free(ctx)
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sock.close()
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requests._mbuddy.free(errmsg)
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requests.release(resp)
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return None
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total: INT = 0
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while total < requests.HTTP_BUFSIZ - 1:
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n: INT = openssl.SSL_read(ssl, resp_buf + total, requests.HTTP_BUFSIZ - 1 - total)
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if n <= 0: break
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total += n
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resp_buf[total] = 0
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# 关闭 TLS 与 TCP
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openssl.SSL_shutdown(ssl)
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openssl.SSL_free(ssl)
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openssl.SSL_CTX_free(ctx)
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sock.close()
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resp._raw_buf = resp_buf
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requests.parse_response(resp, total)
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requests._mbuddy.free(errmsg)
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return resp
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# ============================================================
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# 公共 API
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# ============================================================
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def _HttpsRedirectLoop(method: str, url: str, verify: bool, ca_file: str, data: str, content_type: str) -> requests.Response | t.CPtr:
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"""HTTPS GET/POST + 重定向跟随（跨 http/https，最多 5 跳）。"""
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if requests._mbuddy is None: return None
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cur: str = requests._mbuddy.alloc(2048)
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if cur is None: return None
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if INT(string.strlen(url)) >= 2047:
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_RecordErrorText("url too long")
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requests._mbuddy.free(cur)
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return None
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string.strcpy(cur, url)
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hop: INT = 0
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while hop < 5:
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resp: requests.Response | t.CPtr = _HttpsRequest(method, cur, verify, ca_file, data, content_type)
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if resp is None:
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requests._mbuddy.free(cur)
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return None
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code: INT = resp.status_code
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if not (code >= 300 and code < 400):
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requests._mbuddy.free(cur)
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return resp
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loc: str = requests._mbuddy.alloc(2048)
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if loc is None:
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requests._mbuddy.free(cur)
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return resp
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if requests.header_value(resp, "Location", loc, 2048) != 0:
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requests._mbuddy.free(loc)
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requests._mbuddy.free(cur)
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return resp
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nxt: str = requests._mbuddy.alloc(2048)
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if nxt is None:
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requests._mbuddy.free(loc)
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requests._mbuddy.free(cur)
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return resp
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if requests._ResolveRedirectUrl(cur, loc, nxt, 2048) != 0:
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_RecordErrorText("unresolvable redirect Location")
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requests.release(resp)
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requests._mbuddy.free(nxt)
|
||
requests._mbuddy.free(loc)
|
||
requests._mbuddy.free(cur)
|
||
return None
|
||
requests.release(resp)
|
||
|
||
# 跨协议分流：https → 继续本循环；http → 交给 requests（http）链
|
||
if string.strncmp(nxt, "https://", 8) != 0:
|
||
requests._mbuddy.free(loc)
|
||
requests._mbuddy.free(cur)
|
||
http_resp: requests.Response | t.CPtr = requests.get(nxt)
|
||
requests._mbuddy.free(nxt)
|
||
return http_resp
|
||
|
||
requests._mbuddy.free(loc)
|
||
requests._mbuddy.free(cur)
|
||
cur = nxt
|
||
hop += 1
|
||
|
||
_RecordErrorText("too many redirects")
|
||
requests._mbuddy.free(cur)
|
||
return None
|
||
|
||
|
||
def get(url: str, verify: bool = True, ca_file: str = None) -> requests.Response | t.CPtr:
|
||
"""HTTPS GET request（自动跟随 3xx 重定向，最多 5 跳）。
|
||
|
||
Args:
|
||
url: Full URL (e.g., "https://example.com/path")
|
||
verify: True 时校验证书链 + 主机名（默认）
|
||
ca_file: PEM CA bundle 路径；None 时使用系统默认 CA 路径
|
||
Returns:
|
||
Pointer to a Response object, None on failure (see last_error()).
|
||
"""
|
||
return _HttpsRedirectLoop("GET", url, verify, ca_file, None, None)
|
||
|
||
|
||
def post(url: str, data: str = None, content_type: str = "application/x-www-form-urlencoded",
|
||
verify: bool = True, ca_file: str = None) -> requests.Response | t.CPtr:
|
||
"""HTTPS POST request（自动跟随 3xx 重定向，最多 5 跳）。
|
||
|
||
Args:
|
||
url: Full URL
|
||
data: Request body data
|
||
content_type: Content-Type header
|
||
verify: True 时校验证书链 + 主机名（默认）
|
||
ca_file: PEM CA bundle 路径；None 时使用系统默认 CA 路径
|
||
Returns:
|
||
Pointer to a Response object, None on failure (see last_error()).
|
||
"""
|
||
return _HttpsRedirectLoop("POST", url, verify, ca_file, data, content_type)
|
||
|
||
|
||
# ============================================================
|
||
# 大文件 Range 下载原语（requests.download 使用，与 requests._DlOnce 镜像）
|
||
#
|
||
# 线程安全：本函数不使用 _mbuddy（请求/响应缓冲一律 stdlib），每个连接独立
|
||
# SSL_CTX/SSL/socket，供多线程并行切片并发调用（OPENSSL_init_ssl 由主线程
|
||
# 先 _EnsureReady 预热一次）。
|
||
#
|
||
# 返回: >=0 响应体字节数；-1 参数错；-2 3xx 重定向（Location 写 out_loc）；
|
||
# -3 其它失败（last_error() 查看原因）。
|
||
# ============================================================
|
||
|
||
def _DlOnce(url: str, start: t.CSizeT, count: INT, verify: bool, ca_file: str,
|
||
dst: str, dst_cap: INT, out_status: INT | t.CPtr,
|
||
out_loc: str, out_loccap: INT,
|
||
out_total: t.CSizeT | t.CPtr) -> INT:
|
||
"""HTTPS 单次 Range 拉取（线程安全，见模块注释）。"""
|
||
global _last_verify_val, _last_verify_flag
|
||
if url is None or dst is None or dst_cap <= 0 \
|
||
or out_status is None or out_total is None:
|
||
return -1
|
||
c.Set(c.Deref(out_status), 0)
|
||
c.Set(c.Deref(out_total), 0)
|
||
if out_loc is not None and out_loccap > 0:
|
||
out_loc[0] = 0
|
||
_last_verify_flag = 1 if verify else 0
|
||
|
||
if _EnsureReady() != 0:
|
||
return -3
|
||
|
||
host_buf: t.CArray[t.CChar, 256]
|
||
path_buf: t.CArray[t.CChar, 1024]
|
||
port: INT = 0
|
||
if _ParseHttpsUrl(url, host_buf, 256, path_buf, 1024, c.Addr(port)) != 0:
|
||
_RecordErrorText("bad https url")
|
||
return -3
|
||
|
||
sock = socket.Socket(socket.AF_INET, socket.SOCK_STREAM)
|
||
if sock.fd == socket.INVALID_SOCKET:
|
||
_RecordErrorText("socket() failed")
|
||
return -3
|
||
if sock.connect(host_buf, port) != 0:
|
||
_RecordErrorText("connect failed")
|
||
sock.close()
|
||
return -3
|
||
|
||
ctx: openssl.SslCtxPtr = openssl.SSL_CTX_new(openssl.TLS_client_method())
|
||
if ctx is None:
|
||
_RecordErrorText("SSL_CTX_new failed")
|
||
sock.close()
|
||
return -3
|
||
|
||
if verify:
|
||
openssl.SSL_CTX_set_verify(ctx, openssl.SslVerifyPeer, None)
|
||
if ca_file is not None and ca_file[0] != 0:
|
||
if openssl.SSL_CTX_load_verify_locations(ctx, ca_file, None) != 1:
|
||
_RecordErrorText("load CA file failed")
|
||
openssl.SSL_CTX_free(ctx)
|
||
sock.close()
|
||
return -3
|
||
else:
|
||
openssl.SSL_CTX_set_default_verify_paths(ctx)
|
||
else:
|
||
openssl.SSL_CTX_set_verify(ctx, openssl.SslVerifyNone, None)
|
||
|
||
ssl: openssl.SslPtr = openssl.SSL_new(ctx)
|
||
if ssl is None:
|
||
_RecordErrorText("SSL_new failed")
|
||
openssl.SSL_CTX_free(ctx)
|
||
sock.close()
|
||
return -3
|
||
|
||
openssl.SSL_set_fd(ssl, sock.fd)
|
||
openssl.SSL_ctrl(ssl, openssl.SslCtrlSetTlsextHostname, openssl.TlsextNametypeHostName, host_buf)
|
||
if verify:
|
||
openssl.SSL_set1_host(ssl, host_buf)
|
||
|
||
hret: INT = openssl.SSL_connect(ssl)
|
||
if hret <= 0:
|
||
_RecordErrorText("SSL_connect failed")
|
||
openssl.SSL_free(ssl)
|
||
openssl.SSL_CTX_free(ctx)
|
||
sock.close()
|
||
return -3
|
||
|
||
if verify:
|
||
_last_verify_val = INT(openssl.SSL_get_verify_result(ssl))
|
||
if _last_verify_val != 0:
|
||
_RecordErrorText("SSL certificate verify failed")
|
||
openssl.SSL_free(ssl)
|
||
openssl.SSL_CTX_free(ctx)
|
||
sock.close()
|
||
return -3
|
||
else:
|
||
_last_verify_val = -1
|
||
|
||
# 组 Range 请求头（不带 Accept-Encoding，保证响应为原始字节）
|
||
req: str = stdlib.malloc(1024)
|
||
if req is None:
|
||
openssl.SSL_free(ssl)
|
||
openssl.SSL_CTX_free(ctx)
|
||
sock.close()
|
||
return -3
|
||
cnt: INT = count
|
||
if cnt < 0:
|
||
cnt = 0
|
||
end: t.CSizeT = start + t.CSizeT(cnt) - 1
|
||
if cnt <= 0:
|
||
end = start
|
||
stdio.snprintf(req, 1024,
|
||
"GET %s HTTP/1.1\r\nHost: %s\r\nRange: bytes=%zu-%zu\r\nConnection: close\r\n\r\n",
|
||
path_buf, host_buf, start, end)
|
||
sent: INT = openssl.SSL_write(ssl, req, INT(string.strlen(req)))
|
||
stdlib.free(req)
|
||
if sent <= 0:
|
||
_RecordErrorText("SSL_write failed")
|
||
openssl.SSL_free(ssl)
|
||
openssl.SSL_CTX_free(ctx)
|
||
sock.close()
|
||
return -3
|
||
|
||
total: INT = 0
|
||
tgt: INT = -1
|
||
while total < dst_cap - 1:
|
||
room: INT = dst_cap - 1 - total
|
||
if room > 4096:
|
||
room = 4096
|
||
n: INT = openssl.SSL_read(ssl, dst + total, room)
|
||
if n <= 0:
|
||
break
|
||
total += n
|
||
if tgt < 0:
|
||
bo: INT = requests._FindBodyStart(dst, total)
|
||
if bo >= 0:
|
||
cl: INT = requests._CLenOf(dst, total)
|
||
if cl >= 0:
|
||
tgt = bo + cl
|
||
if tgt >= 0 and total >= tgt:
|
||
break
|
||
|
||
openssl.SSL_shutdown(ssl)
|
||
openssl.SSL_free(ssl)
|
||
openssl.SSL_CTX_free(ctx)
|
||
sock.close()
|
||
dst[total] = 0
|
||
|
||
st: INT = requests._StatusRaw(dst)
|
||
c.Set(c.Deref(out_status), st)
|
||
if st == 0:
|
||
_RecordErrorText("empty response")
|
||
return -3
|
||
if requests._IsHttpRedirect(st):
|
||
if out_loc is not None and out_loccap > 0:
|
||
if requests._RawHeaderValue(dst, total, "Location", out_loc, out_loccap) != 0:
|
||
out_loc[0] = 0
|
||
return -2
|
||
if st != 200 and st != 206:
|
||
_RecordErrorText("http status not 200/206")
|
||
return -3
|
||
|
||
if st == 206:
|
||
c.Set(c.Deref(out_total), requests._CRTotalOf(dst, total))
|
||
else:
|
||
cl2: INT = requests._CLenOf(dst, total)
|
||
if cl2 > 0:
|
||
c.Set(c.Deref(out_total), t.CSizeT(cl2))
|
||
bo: INT = requests._FindBodyStart(dst, total)
|
||
if bo < 0 or bo >= total:
|
||
return 0
|
||
blen: INT = total - bo
|
||
if blen > cnt and cnt > 0:
|
||
blen = cnt
|
||
return blen
|