From 8f4608468b890dce2dad9f91d5607ee7e9c1aba1 Mon Sep 17 00:00:00 2001 From: Daniel Stenberg Date: Thu, 9 Mar 2023 17:47:06 +0100 Subject: [PATCH] ftp: add more conditions for connection reuse Reported-by: Harry Sintonen Closes #10730 Backported to Debian by Samuel Henrique --- lib/ftp.c | 28 ++++++++++++++++++++++++++-- lib/ftp.h | 5 +++++ lib/setopt.c | 2 +- lib/url.c | 17 +++++++++++++++-- lib/urldata.h | 4 ++-- 5 files changed, 49 insertions(+), 7 deletions(-) --- a/lib/ftp.c +++ b/lib/ftp.c @@ -4097,6 +4097,8 @@ static CURLcode ftp_disconnect(struct Cu } freedirs(ftpc); + Curl_safefree(ftpc->account); + Curl_safefree(ftpc->alternative_to_user); Curl_safefree(ftpc->prevpath); Curl_safefree(ftpc->server_os); Curl_pp_disconnect(pp); @@ -4364,11 +4366,31 @@ static CURLcode ftp_setup_connection(str { char *type; struct FTP *ftp; + struct ftp_conn *ftpc = &conn->proto.ftpc; data->req.p.ftp = ftp = calloc(sizeof(struct FTP), 1); if(!ftp) return CURLE_OUT_OF_MEMORY; + /* clone connection related data that is FTP specific */ + if(data->set.str[STRING_FTP_ACCOUNT]) { + ftpc->account = strdup(data->set.str[STRING_FTP_ACCOUNT]); + if(!ftpc->account) { + free(ftp); + return CURLE_OUT_OF_MEMORY; + } + } + if(data->set.str[STRING_FTP_ALTERNATIVE_TO_USER]) { + ftpc->alternative_to_user = + strdup(data->set.str[STRING_FTP_ALTERNATIVE_TO_USER]); + if(!ftpc->alternative_to_user) { + Curl_safefree(ftpc->account); + free(ftp); + return CURLE_OUT_OF_MEMORY; + } + } + data->req.p.ftp = ftp; + ftp->path = &data->state.up.path[1]; /* don't include the initial slash */ /* FTP URLs support an extension like ";type=" that @@ -4403,7 +4425,9 @@ static CURLcode ftp_setup_connection(str /* get some initial data into the ftp struct */ ftp->transfer = PPTRANSFER_BODY; ftp->downloadsize = 0; - conn->proto.ftpc.known_filesize = -1; /* unknown size for now */ + ftpc->known_filesize = -1; /* unknown size for now */ + ftpc->use_ssl = data->set.use_ssl; + ftpc->ccc = data->set.ftp_ccc; return CURLE_OK; } --- a/lib/ftp.h +++ b/lib/ftp.h @@ -115,6 +115,8 @@ struct FTP { struct */ struct ftp_conn { struct pingpong pp; + char *account; + char *alternative_to_user; char *entrypath; /* the PWD reply when we logged on */ char *file; /* url-decoded file name (or path) */ char **dirs; /* realloc()ed array for path components */ @@ -144,6 +146,9 @@ struct ftp_conn { ftpstate state; /* always use ftp.c:state() to change state! */ ftpstate state_saved; /* transfer type saved to be reloaded after data connection is established */ + unsigned char use_ssl; /* if AUTH TLS is to be attempted etc, for FTP or + IMAP or POP3 or others! (type: curl_usessl)*/ + unsigned char ccc; /* ccc level for this connection */ 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 --- a/lib/setopt.c +++ b/lib/setopt.c @@ -2290,7 +2290,7 @@ CURLcode Curl_vsetopt(struct Curl_easy * arg = va_arg(param, long); if((arg < CURLUSESSL_NONE) || (arg >= CURLUSESSL_LAST)) return CURLE_BAD_FUNCTION_ARGUMENT; - data->set.use_ssl = (curl_usessl)arg; + data->set.use_ssl = (unsigned char)arg; break; case CURLOPT_SSL_OPTIONS: --- a/lib/url.c +++ b/lib/url.c @@ -1362,10 +1362,24 @@ ConnectionExists(struct Curl_easy *data, (data->state.httpwant < CURL_HTTP_VERSION_2_0)) continue; - if(get_protocol_family(needle->handler) & PROTO_FAMILY_SSH) { +#ifdef USE_SSH + else if(get_protocol_family(needle->handler) & PROTO_FAMILY_SSH) { if(!ssh_config_matches(needle, check)) continue; } +#endif +#ifndef CURL_DISABLE_FTP + else if(get_protocol_family(needle->handler) & PROTO_FAMILY_FTP) { + /* Also match ACCOUNT, ALTERNATIVE-TO-USER, USE_SSL and CCC options */ + if(Curl_timestrcmp(needle->proto.ftpc.account, + check->proto.ftpc.account) || + Curl_timestrcmp(needle->proto.ftpc.alternative_to_user, + check->proto.ftpc.alternative_to_user) || + (needle->proto.ftpc.use_ssl != check->proto.ftpc.use_ssl) || + (needle->proto.ftpc.ccc != check->proto.ftpc.ccc)) + continue; + } +#endif if((needle->handler->flags&PROTOPT_SSL) #ifndef CURL_DISABLE_PROXY --- a/lib/urldata.h +++ b/lib/urldata.h @@ -1749,8 +1749,6 @@ struct UserDefined { enum CURL_NETRC_OPTION use_netrc; /* defined in include/curl.h */ #endif - curl_usessl use_ssl; /* if AUTH TLS is to be attempted etc, for FTP or - IMAP or POP3 or others! */ long new_file_perms; /* Permissions to use when creating remote files */ long new_directory_perms; /* Permissions to use when creating remote dirs */ long ssh_auth_types; /* allowed SSH auth types */ @@ -1796,6 +1794,8 @@ struct UserDefined { CURLU *uh; /* URL handle for the current parsed URL */ void *trailer_data; /* pointer to pass to trailer data callback */ curl_trailer_callback trailer_callback; /* trailing data callback */ + unsigned char use_ssl; /* if AUTH TLS is to be attempted etc, for FTP or + IMAP or POP3 or others! (type: curl_usessl)*/ BIT(is_fread_set); /* has read callback been set to non-NULL? */ BIT(is_fwrite_set); /* has write callback been set to non-NULL? */ BIT(free_referer); /* set TRUE if 'referer' points to a string we