1 #ifndef HEADER_CURL_TRANSFER_H 2 #define HEADER_CURL_TRANSFER_H 3 /*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 11 * 12 * This software is licensed as described in the file COPYING, which 13 * you should have received as part of this distribution. The terms 14 * are also available at https://curl.se/docs/copyright.html. 15 * 16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 17 * copies of the Software, and permit persons to whom the Software is 18 * furnished to do so, under the terms of the COPYING file. 19 * 20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 21 * KIND, either express or implied. 22 * 23 * SPDX-License-Identifier: curl 24 * 25 ***************************************************************************/ 26 27 #define Curl_headersep(x) ((((x)==':') || ((x)==';'))) 28 char *Curl_checkheaders(const struct Curl_easy *data, 29 const char *thisheader, 30 const size_t thislen); 31 32 void Curl_init_CONNECT(struct Curl_easy *data); 33 34 CURLcode Curl_pretransfer(struct Curl_easy *data); 35 CURLcode Curl_posttransfer(struct Curl_easy *data); 36 37 typedef enum { 38 FOLLOW_NONE, /* not used within the function, just a placeholder to 39 allow initing to this */ 40 FOLLOW_FAKE, /* only records stuff, not actually following */ 41 FOLLOW_RETRY, /* set if this is a request retry as opposed to a real 42 redirect following */ 43 FOLLOW_REDIR /* a full true redirect */ 44 } followtype; 45 46 CURLcode Curl_follow(struct Curl_easy *data, char *newurl, 47 followtype type); 48 CURLcode Curl_readwrite(struct Curl_easy *data); 49 int Curl_single_getsock(struct Curl_easy *data, 50 struct connectdata *conn, curl_socket_t *socks); 51 CURLcode Curl_retry_request(struct Curl_easy *data, char **url); 52 bool Curl_meets_timecondition(struct Curl_easy *data, time_t timeofdoc); 53 54 /** 55 * Write the transfer raw response bytes, as received from the connection. 56 * Will handle all passed bytes or return an error. By default, this will 57 * write the bytes as BODY to the client. Protocols may provide a 58 * "write_resp" callback in their handler to add specific treatment. E.g. 59 * HTTP parses response headers and passes them differently to the client. 60 * @param data the transfer 61 * @param buf the raw response bytes 62 * @param blen the amount of bytes in `buf` 63 * @param is_eos TRUE iff the connection indicates this to be the last 64 * bytes of the response 65 */ 66 CURLcode Curl_xfer_write_resp(struct Curl_easy *data, 67 const char *buf, size_t blen, 68 bool is_eos); 69 70 /** 71 * Write a single "header" line from a server response. 72 * @param hd0 the 0-terminated, single header line 73 * @param hdlen the length of the header line 74 * @param is_eos TRUE iff this is the end of the response 75 */ 76 CURLcode Curl_xfer_write_resp_hd(struct Curl_easy *data, 77 const char *hd0, size_t hdlen, bool is_eos); 78 79 /* This sets up a forthcoming transfer */ 80 void Curl_xfer_setup(struct Curl_easy *data, 81 int sockindex, /* socket index to read from or -1 */ 82 curl_off_t size, /* -1 if unknown at this point */ 83 bool getheader, /* TRUE if header parsing is wanted */ 84 int writesockindex /* socket index to write to. May be 85 the same we read from. -1 86 disables */ 87 ); 88 89 /** 90 * Multi has set transfer to DONE. Last chance to trigger 91 * missing response things like writing an EOS to the client. 92 */ 93 CURLcode Curl_xfer_write_done(struct Curl_easy *data, bool premature); 94 95 /** 96 * Send data on the socket/connection filter designated 97 * for transfer's outgoing data. 98 * Will return CURLE_OK on blocking with (*pnwritten == 0). 99 */ 100 CURLcode Curl_xfer_send(struct Curl_easy *data, 101 const void *buf, size_t blen, 102 size_t *pnwritten); 103 104 /** 105 * Receive data on the socket/connection filter designated 106 * for transfer's incoming data. 107 * Will return CURLE_AGAIN on blocking with (*pnrcvd == 0). 108 */ 109 CURLcode Curl_xfer_recv(struct Curl_easy *data, 110 char *buf, size_t blen, 111 ssize_t *pnrcvd); 112 113 CURLcode Curl_xfer_send_close(struct Curl_easy *data); 114 115 #endif /* HEADER_CURL_TRANSFER_H */ 116
