#ifndef HEADER_CURL_FTP_H #define HEADER_CURL_FTP_H /*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at https://curl.haxx.se/docs/copyright.html. * * You may opt to use, copy, modify, merge, publish, distribute and/or sell * copies of the Software, and permit persons to whom the Software is * furnished to do so, under the terms of the COPYING file. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ***************************************************************************/ #include "pingpong.h" #ifndef CURL_DISABLE_FTP extern const struct Curl_handler Curl_handler_ftp; #ifdef USE_SSL extern const struct Curl_handler Curl_handler_ftps; #endif CURLcode Curl_ftpsend(struct connectdata *, const char *cmd); CURLcode Curl_GetFTPResponse(ssize_t *nread, struct connectdata *conn, int *ftpcode); #endif /* CURL_DISABLE_FTP */ /**************************************************************************** * FTP unique setup ***************************************************************************/ typedef enum { FTP_STOP, /* do nothing state, stops the state machine */ FTP_WAIT220, /* waiting for the initial 220 response immediately after a connect */ FTP_AUTH, FTP_USER, FTP_PASS, FTP_ACCT, FTP_PBSZ, FTP_PROT, FTP_CCC, FTP_PWD, FTP_SYST, FTP_NAMEFMT, FTP_QUOTE, /* waiting for a response to a command sent in a quote list */ FTP_RETR_PREQUOTE, FTP_STOR_PREQUOTE, FTP_POSTQUOTE, FTP_CWD, /* change dir */ FTP_MKD, /* if the dir didn't exist */ FTP_MDTM, /* to figure out the datestamp */ FTP_TYPE, /* to set type when doing a head-like request */ FTP_LIST_TYPE, /* set type when about to do a dir list */ FTP_RETR_TYPE, /* set type when about to RETR a file */ FTP_STOR_TYPE, /* set type when about to STOR a file */ FTP_SIZE, /* get the remote file's size for head-like request */ FTP_RETR_SIZE, /* get the remote file's size for RETR */ FTP_STOR_SIZE, /* get the size for STOR */ FTP_REST, /* when used to check if the server supports it in head-like */ FTP_RETR_REST, /* when asking for "resume" in for RETR */ FTP_PORT, /* generic state for PORT, LPRT and EPRT, check count1 */ FTP_PRET, /* generic state for PRET RETR, PRET STOR and PRET LIST/NLST */ FTP_PASV, /* generic state for PASV and EPSV, check count1 */ FTP_LIST, /* generic state for LIST, NLST or a custom list command */ FTP_RETR, FTP_STOR, /* generic state for STOR and APPE */ FTP_QUIT, FTP_LAST /* never used */ } ftpstate; struct ftp_parselist_data; /* defined later in ftplistparser.c */ struct ftp_wc { struct ftp_parselist_data *parser; struct { curl_write_callback write_function; FILE *file_descriptor; } backup; }; typedef enum { FTPFILE_MULTICWD = 1, /* as defined by RFC1738 */ FTPFILE_NOCWD = 2, /* use SIZE / RETR / STOR on the full path */ FTPFILE_SINGLECWD = 3 /* make one CWD, then SIZE / RETR / STOR on the file */ } curl_ftpfile; /* This FTP struct is used in the Curl_easy. All FTP data that is connection-oriented must be in FTP_conn to properly deal with the fact that perhaps the Curl_easy is changed between the times the connection is used. */ struct FTP { char *user; /* user name string */ char *passwd; /* password string */ char *path; /* points to the urlpieces struct field */ char *pathalloc; /* if non-NULL a pointer to an allocated path */ /* transfer a file/body or not, done as a typedefed enum just to make debuggers display the full symbol and not just the numerical value */ curl_pp_transfer transfer; curl_off_t downloadsize; }; /* ftp_conn is used for struct connection-oriented data in the connectdata struct */ struct ftp_conn { struct pingpong pp; char *entrypath; /* the PWD reply when we logged on */ char **dirs; /* realloc()ed array for path components */ int dirdepth; /* number of entries used in the 'dirs' array */ int diralloc; /* number of entries allocated for the 'dirs' array */ char *file; /* decoded file */ bool dont_check; /* Set to TRUE to prevent the final (post-transfer) file size and 226/250 status check. It should still read the line, just ignore the result. */ bool ctl_valid; /* Tells Curl_ftp_quit() whether or not to do anything. If the connection has timed out or been closed, this should be FALSE when it gets to Curl_ftp_quit() */ bool cwddone; /* if it has been determined that the proper CWD combo already has been done */ int cwdcount; /* number of CWD commands issued */ bool cwdfail; /* set TRUE if a CWD command fails, as then we must prevent caching the current directory */ bool wait_data_conn; /* this is set TRUE if data connection is waited */ char *prevpath; /* conn->path from the previous transfer */ curl_ftpfile prevmethod; /* ftp method in previous transfer */ char transfertype; /* set by ftp_transfertype for use by Curl_client_write()a and others (A/I or zero) */ int count1; /* general purpose counter for the state machine */ int count2; /* general purpose counter for the state machine */ int count3; /* general purpose counter for the state machine */ ftpstate state; /* always use ftp.c:state() to change state! */ ftpstate state_saved; /* transfer type saved to be reloaded after data connection is established */ curl_off_t retr_size_saved; /* Size of retrieved file saved */ char *server_os; /* The target server operating system. */ curl_off_t known_filesize; /* file size is different from -1, if wildcard LIST parsing was done and wc_statemach set it */ /* newhost is the (allocated) IP addr or host name to connect the data connection to */ char *newhost; /* this is the pair to connect the DATA... */ unsigned short newport; /* connection to */ }; #define DEFAULT_ACCEPT_TIMEOUT 60000 /* milliseconds == one minute */ #endif /* HEADER_CURL_FTP_H */