[85e24a3] | 1 | /* FIXME: 1. Parse command is a hack. We can do better. |
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[3f777d0e] | 2 | * 2. Some sort of access control? |
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[38371dbe] | 3 | * 3. OSV: hooks support seems to be bad, as it requires storing of |
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| 4 | * entire input file in memory. Seem to be better to change it to |
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[3f777d0e] | 5 | * something more reasonable, like having |
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| 6 | * 'hook_write(void const *buf, int count)' routine that will be |
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| 7 | * called multiple times while file is being received. |
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[38371dbe] | 8 | * 4. OSV: Remove hack with "/dev/null"? |
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[85e24a3] | 9 | * |
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[3f777d0e] | 10 | * FTP Server Daemon |
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[6d0e13c] | 11 | * |
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| 12 | * Submitted by: Jake Janovetz <janovetz@tempest.ece.uiuc.edu> |
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| 13 | * |
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[3f777d0e] | 14 | * Changed by: Sergei Organov <osv@javad.ru> (OSV) |
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[38371dbe] | 15 | * |
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| 16 | * Changes: |
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| 17 | * |
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[07fbfced] | 18 | * 2001-01-31 Sergei Organov <osv@javad.ru> |
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| 19 | * |
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| 20 | * * Hacks with current dir and root dir removed in favor of new libio |
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| 21 | * support for task-local current and root directories. |
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| 22 | * |
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| 23 | * 2001-01-30 Sergei Organov <osv@javad.ru> |
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| 24 | * |
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| 25 | * * Bug in `close_data_socket()' introduced by previous change fixed. |
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| 26 | * * `command_pasv()' changed to set timeout on socket we are listening on |
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| 27 | * and code fixed to don't close socket twice on error. |
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| 28 | * * `serr()' changed to clear `errno'. |
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| 29 | * * `data_socket()' changed to clear `errno' before `bind()'. |
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| 30 | * * `session()' changed to clear `errno' before processing session. |
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| 31 | * |
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| 32 | * 2001-01-29 Sergei Organov <osv@javad.ru> |
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| 33 | * |
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| 34 | * * `close_data_socket()' fixed to close both active and passive sockets |
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| 35 | * * Initialize info->data_socket to -1 in `daemon()' |
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| 36 | * * Initialize `fname' to empty string in `exec_command()' |
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| 37 | * |
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[38371dbe] | 38 | * 2001-01-22 Sergei Organov <osv@javad.ru> |
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| 39 | * |
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| 40 | * * Timeouts on sockets implemented. 'idle' field added to |
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| 41 | * configuration. No timeout by default to keep backward compatibility. |
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| 42 | * Note: SITE IDLE command not implemented yet. |
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| 43 | * * Basic global access control implemented. 'access' field added to |
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| 44 | * configuration. No access limitations by default to keep backward |
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| 45 | * compatibility. |
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| 46 | * |
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| 47 | * 2001-01-17 Sergei Organov <osv@javad.ru> |
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| 48 | * |
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| 49 | * * Anchor data socket for active mode (using self IP and port 20.) |
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| 50 | * * Fixed default data port support (still not tested). |
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| 51 | * * Don't allow IP address different from originating host in |
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| 52 | * PORT command to improve security. |
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| 53 | * * Fixed bug in MDTM command. |
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| 54 | * * Check for correctness of parsing of argument in command_port(). |
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| 55 | * * Fixed squeeze_path() to don't allow names like 'NAME/smth' where |
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| 56 | * 'NAME' is not a directory. |
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| 57 | * * Command parsing a little bit improved: command names are now |
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| 58 | * converted to upper-case to be more compatible with RFC (command |
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| 59 | * names are not case-sensitive.) |
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| 60 | * * Reformat comments so that they have RTEMS look-and-feel. |
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| 61 | * |
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| 62 | * 2001-01-16 Sergei Organov <osv@javad.ru> |
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| 63 | * |
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| 64 | * * Fixed DELE, SITE CHMOD, RMD, MKD broken by previous changes |
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| 65 | * * True ASCII mode implemented (doesn't work for hooks and /dev/null) |
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| 66 | * * Passive mode implemented, PASV command added. |
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| 67 | * * Default port for data connection could be used (untested, can't find |
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| 68 | * ftp client that doesn't send PORT command) |
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| 69 | * * SYST reply changed to UNIX, as former RTEMS isn't registered name. |
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| 70 | * * Reply codes reviewed and fixed. |
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| 71 | * |
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| 72 | * 2001-01-08 Sergei Organov <osv@javad.ru> |
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| 73 | * |
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| 74 | * * use pool of pre-created threads to handle sessions |
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| 75 | * * LIST output now similar to what "/bin/ls -al" would output, thus |
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[3f777d0e] | 76 | * FTP clients could parse it. |
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[38371dbe] | 77 | * * LIST NAME now works (both for files and directories) |
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| 78 | * * keep track of CWD for every session separately |
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| 79 | * * ability to specify root directory name in configuration table |
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| 80 | * * options sent in commands are ignored, thus LIST -al FILE works |
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| 81 | * * added support for NLST, CDUP and MDTM commands |
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| 82 | * * buffers are allocated on stack instead of heap where possible |
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| 83 | * * drop using of task notepad to pass parameters - use function |
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[3f777d0e] | 84 | * arguments instead |
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[38371dbe] | 85 | * * various bug-fixes, e.g., use of PF_INET in socket() instead of |
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[3f777d0e] | 86 | * AF_INET, use snprintf() instead of sprintf() everywhere for safety, |
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| 87 | * etc. |
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| 88 | * |
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[6d0e13c] | 89 | * $Id$ |
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| 90 | */ |
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| 91 | |
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[38371dbe] | 92 | /************************************************************************* |
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| 93 | * ftpd.c |
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| 94 | ************************************************************************* |
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| 95 | * Description: |
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| 96 | * |
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| 97 | * This file contains the daemon which services requests that appear |
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| 98 | * on the FTP port. This server is compatible with FTP, but it |
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| 99 | * also provides 'hooks' to make it usable in situations where files |
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| 100 | * are not used/necessary. Once the server is started, it runs |
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| 101 | * forever. |
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| 102 | * |
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| 103 | * |
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| 104 | * Organization: |
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| 105 | * |
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| 106 | * The FTP daemon is started upon boot along with a (configurable) |
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| 107 | * number of tasks to handle sessions. It runs all the time and |
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| 108 | * waits for connections on the known FTP port (21). When |
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| 109 | * a connection is made, it wakes-up a 'session' task. That |
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| 110 | * session then interacts with the remote host. When the session |
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| 111 | * is complete, the session task goes to sleep. The daemon still |
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| 112 | * runs, however. |
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| 113 | * |
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| 114 | * |
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| 115 | * Supported commands are: |
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| 116 | * |
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| 117 | * RETR xxx - Sends a file from the client. |
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| 118 | * STOR xxx - Receives a file from the client. xxx = filename. |
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| 119 | * LIST xxx - Sends a file list to the client. |
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| 120 | * NLST xxx - Sends a file list to the client. |
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| 121 | * USER - Does nothing. |
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| 122 | * PASS - Does nothing. |
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| 123 | * SYST - Replies with the system type (`RTEMS'). |
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| 124 | * DELE xxx - Delete file xxx. |
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| 125 | * MKD xxx - Create directory xxx. |
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| 126 | * RMD xxx - Remove directory xxx. |
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| 127 | * PWD - Print working directory. |
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| 128 | * CWD xxx - Change working directory. |
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| 129 | * CDUP - Change to upper directory. |
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| 130 | * SITE CHMOD xxx yyy - Change permissions on file yyy to xxx. |
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| 131 | * PORT a,b,c,d,x,y - Setup for a data port to IP address a.b.c.d |
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| 132 | * and port (x*256 + y). |
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| 133 | * MDTM xxx - Send file modification date/time to the client. |
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| 134 | * xxx = filename. |
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| 135 | * PASV - Use passive mode data connection. |
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| 136 | * |
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| 137 | * |
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| 138 | * The public routines contained in this file are: |
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| 139 | * |
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| 140 | * rtems_initialize_ftpd - Initializes and starts the server daemon, |
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| 141 | * then returns to its caller. |
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| 142 | * |
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| 143 | *------------------------------------------------------------------------ |
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| 144 | * Jake Janovetz |
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| 145 | * University of Illinois |
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| 146 | * 1406 West Green Street |
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| 147 | * Urbana IL 61801 |
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| 148 | ************************************************************************* |
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| 149 | * Change History: |
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| 150 | * 12/01/97 - Creation (JWJ) |
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| 151 | * 2001-01-08 - Changes by OSV |
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[6d0e13c] | 152 | *************************************************************************/ |
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| 153 | |
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[38371dbe] | 154 | /************************************************************************* |
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[6d0e13c] | 155 | * Meanings of first and second digits of reply codes: |
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| 156 | * |
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| 157 | * Reply: Description: |
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| 158 | *-------- -------------- |
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| 159 | * 1yz Positive preliminary reply. The action is being started but |
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| 160 | * expect another reply before sending another command. |
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| 161 | * 2yz Positive completion reply. A new command can be sent. |
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[38371dbe] | 162 | * 3yz Positive intermediate reply. The command has been accepted |
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[6d0e13c] | 163 | * but another command must be sent. |
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| 164 | * 4yz Transient negative completion reply. The requested action did |
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| 165 | * not take place, but the error condition is temporary so the |
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| 166 | * command can be reissued later. |
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[3f777d0e] | 167 | * 5yz Permanent negative completion reply. The command was not |
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[6d0e13c] | 168 | * accepted and should not be retried. |
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| 169 | *------------------------------------------------------------------------- |
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| 170 | * x0z Syntax errors. |
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| 171 | * x1z Information. |
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| 172 | * x2z Connections. Replies referring to the control or data |
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| 173 | * connections. |
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| 174 | * x3z Authentication and accounting. Replies for the login or |
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| 175 | * accounting commands. |
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| 176 | * x4z Unspecified. |
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| 177 | * x5z Filesystem status. |
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| 178 | *************************************************************************/ |
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| 179 | |
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[3f777d0e] | 180 | #include <stdio.h> |
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| 181 | #include <stdlib.h> |
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| 182 | #include <string.h> |
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| 183 | #include <unistd.h> |
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| 184 | #include <fcntl.h> |
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| 185 | #include <dirent.h> |
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| 186 | #include <errno.h> |
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[38371dbe] | 187 | #include <ctype.h> |
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[6d0e13c] | 188 | |
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[3f777d0e] | 189 | #include <rtems.h> |
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| 190 | #include <rtems/rtems_bsdnet.h> |
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| 191 | #include <rtems/error.h> |
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[07fbfced] | 192 | #include <rtems/libio.h> |
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[3f777d0e] | 193 | #include <syslog.h> |
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| 194 | |
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| 195 | #include <sys/types.h> |
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| 196 | #include <sys/socket.h> |
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| 197 | #include <arpa/ftp.h> |
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| 198 | #include <netinet/in.h> |
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| 199 | |
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| 200 | #include "ftpd.h" |
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| 201 | |
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| 202 | |
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| 203 | #ifdef __GNUC__ |
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| 204 | /* change to #if 1 to disable syslog entirely */ |
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| 205 | #if 0 |
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| 206 | #undef syslog |
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| 207 | #define syslog(a, b, ...) while(0){} |
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| 208 | #endif |
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| 209 | #endif |
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| 210 | |
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| 211 | #define FTPD_SERVER_MESSAGE "RTEMS FTP server (Version 1.1-JWJ) ready." |
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| 212 | |
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[38371dbe] | 213 | #define FTPD_SYSTYPE "UNIX Type: L8" |
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[3f777d0e] | 214 | |
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| 215 | /* Seem to be unused */ |
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| 216 | #if 0 |
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| 217 | #define FTPD_WELCOME_MESSAGE \ |
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| 218 | "Welcome to the RTEMS FTP server.\n" \ |
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| 219 | "\n" \ |
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| 220 | "Login accepted.\n" |
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| 221 | #endif |
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| 222 | |
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| 223 | /* Various buffer sizes */ |
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| 224 | enum |
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| 225 | { |
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| 226 | FTPD_BUFSIZE = 256, /* Size for temporary buffers */ |
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| 227 | FTPD_DATASIZE = 1024, /* Size for file transfer buffers */ |
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| 228 | FTPD_STACKSIZE = 8 * 1024, /* Tasks stack size */ |
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| 229 | }; |
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| 230 | |
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| 231 | /* Event to be used by session tasks for waiting */ |
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| 232 | enum |
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| 233 | { |
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| 234 | FTPD_RTEMS_EVENT = RTEMS_EVENT_1 |
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| 235 | }; |
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| 236 | |
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| 237 | /* Configuration table */ |
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| 238 | extern struct rtems_ftpd_configuration rtems_ftpd_configuration; |
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| 239 | |
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| 240 | /* this is not prototyped in strict ansi mode */ |
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| 241 | FILE *fdopen (int fildes, const char *mode); |
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| 242 | |
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[38371dbe] | 243 | /*PAGE |
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[6d0e13c] | 244 | * SessionInfo structure. |
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| 245 | * |
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[3f777d0e] | 246 | * The following structure is allocated for each session. |
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| 247 | */ |
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[6d0e13c] | 248 | typedef struct |
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| 249 | { |
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[38371dbe] | 250 | struct sockaddr_in ctrl_addr; /* Control connection self address */ |
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| 251 | struct sockaddr_in data_addr; /* Data address set by PORT command */ |
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| 252 | struct sockaddr_in def_addr; /* Default address for data */ |
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| 253 | int use_default; /* 1 - use default address for data */ |
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[3f777d0e] | 254 | FILE *ctrl_fp; /* File pointer for control connection */ |
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[38371dbe] | 255 | int ctrl_socket; /* Socket for ctrl connection */ |
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| 256 | int pasv_socket; /* Socket for PASV connection */ |
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| 257 | int data_socket; /* Socket for data connection */ |
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| 258 | int idle; /* Timeout in seconds */ |
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[3f777d0e] | 259 | int xfer_mode; /* Transfer mode (ASCII/binary) */ |
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| 260 | rtems_id tid; /* Task id */ |
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[6d0e13c] | 261 | } FTPD_SessionInfo_t; |
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| 262 | |
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| 263 | |
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[3f777d0e] | 264 | /* |
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| 265 | * TaskPool structure. |
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| 266 | */ |
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| 267 | typedef struct |
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| 268 | { |
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| 269 | FTPD_SessionInfo_t *info; |
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| 270 | FTPD_SessionInfo_t **queue; |
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| 271 | int count; |
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| 272 | int head; |
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| 273 | int tail; |
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| 274 | rtems_id mutex; |
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| 275 | rtems_id sem; |
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| 276 | } FTPD_TaskPool_t; |
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| 277 | |
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| 278 | /* |
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| 279 | * Task pool instance. |
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| 280 | */ |
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| 281 | static FTPD_TaskPool_t task_pool; |
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| 282 | |
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| 283 | /* |
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[07fbfced] | 284 | * Root directory |
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[3f777d0e] | 285 | */ |
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[07fbfced] | 286 | |
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| 287 | static char const* ftpd_root = "/"; |
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[38371dbe] | 288 | |
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| 289 | /* |
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| 290 | * Default idle timeout for sockets in seconds. |
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| 291 | */ |
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| 292 | static int ftpd_timeout = 0; |
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[3f777d0e] | 293 | |
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[38371dbe] | 294 | /* |
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| 295 | * Global access flags. |
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| 296 | */ |
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| 297 | static int ftpd_access = 0; |
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[3f777d0e] | 298 | |
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| 299 | /*PAGE |
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| 300 | * |
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| 301 | * serr |
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| 302 | * |
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[38371dbe] | 303 | * Return error string corresponding to current 'errno'. |
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[3f777d0e] | 304 | * |
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| 305 | */ |
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| 306 | static char const* |
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| 307 | serr(void) |
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| 308 | { |
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[07fbfced] | 309 | int err = errno; |
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| 310 | errno = 0; |
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| 311 | return strerror(err); |
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[3f777d0e] | 312 | } |
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| 313 | |
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[38371dbe] | 314 | /*PAGE |
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| 315 | * |
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| 316 | * Utility routines for access control. |
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| 317 | * |
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| 318 | */ |
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[3f777d0e] | 319 | |
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[38371dbe] | 320 | static int |
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| 321 | can_read(void) |
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| 322 | { |
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| 323 | return (ftpd_access & FTPD_NO_READ) == 0; |
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| 324 | } |
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| 325 | |
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| 326 | static int |
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| 327 | can_write(void) |
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| 328 | { |
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| 329 | return (ftpd_access & FTPD_NO_WRITE) == 0; |
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| 330 | } |
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| 331 | |
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| 332 | /*PAGE |
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| 333 | * |
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[3f777d0e] | 334 | * Task pool management routines |
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[38371dbe] | 335 | * |
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[3f777d0e] | 336 | */ |
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| 337 | |
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| 338 | |
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| 339 | /*PAGE |
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| 340 | * |
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| 341 | * task_pool_done |
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| 342 | * |
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| 343 | * Cleanup task pool. |
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| 344 | * |
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| 345 | * Input parameters: |
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| 346 | * count - number of entries in task pool to cleanup |
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| 347 | * |
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| 348 | * Output parameters: |
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| 349 | * NONE |
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| 350 | * |
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| 351 | */ |
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| 352 | static void |
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| 353 | task_pool_done(int count) |
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| 354 | { |
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| 355 | int i; |
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| 356 | for(i = 0; i < count; ++i) |
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| 357 | rtems_task_delete(task_pool.info[i].tid); |
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| 358 | if(task_pool.info) |
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| 359 | free(task_pool.info); |
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| 360 | if(task_pool.queue) |
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| 361 | free(task_pool.queue); |
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| 362 | if(task_pool.mutex != (rtems_id)-1) |
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| 363 | rtems_semaphore_delete(task_pool.mutex); |
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| 364 | if(task_pool.sem != (rtems_id)-1) |
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| 365 | rtems_semaphore_delete(task_pool.sem); |
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| 366 | task_pool.info = 0; |
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| 367 | task_pool.queue = 0; |
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| 368 | task_pool.count = 0; |
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| 369 | task_pool.sem = -1; |
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| 370 | task_pool.mutex = -1; |
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| 371 | } |
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| 372 | |
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| 373 | /*PAGE |
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| 374 | * |
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| 375 | * task_pool_init |
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| 376 | * |
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| 377 | * Initialize task pool. |
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| 378 | * |
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| 379 | * Input parameters: |
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| 380 | * count - number of entries in task pool to create |
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| 381 | * priority - priority tasks are started with |
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| 382 | * |
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| 383 | * Output parameters: |
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| 384 | * returns 1 on success, 0 on failure. |
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| 385 | * |
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| 386 | */ |
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[38371dbe] | 387 | static void session(rtems_task_argument arg); /* Forward declare */ |
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| 388 | |
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[3f777d0e] | 389 | static int |
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| 390 | task_pool_init(int count, rtems_task_priority priority) |
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| 391 | { |
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| 392 | int i; |
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| 393 | rtems_status_code sc; |
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| 394 | char id = 'a'; |
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| 395 | |
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| 396 | task_pool.count = 0; |
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| 397 | task_pool.head = task_pool.tail = 0; |
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| 398 | task_pool.mutex = (rtems_id)-1; |
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| 399 | task_pool.sem = (rtems_id)-1; |
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| 400 | |
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| 401 | sc = rtems_semaphore_create( |
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| 402 | rtems_build_name('F', 'T', 'P', 'M'), |
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| 403 | 1, |
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| 404 | RTEMS_DEFAULT_ATTRIBUTES |
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| 405 | | RTEMS_BINARY_SEMAPHORE |
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| 406 | | RTEMS_INHERIT_PRIORITY |
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| 407 | | RTEMS_PRIORITY, |
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| 408 | RTEMS_NO_PRIORITY, |
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| 409 | &task_pool.mutex); |
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| 410 | |
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| 411 | if(sc == RTEMS_SUCCESSFUL) |
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| 412 | sc = rtems_semaphore_create( |
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| 413 | rtems_build_name('F', 'T', 'P', 'S'), |
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| 414 | count, |
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| 415 | RTEMS_DEFAULT_ATTRIBUTES, |
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| 416 | RTEMS_NO_PRIORITY, |
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| 417 | &task_pool.sem); |
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| 418 | |
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| 419 | if(sc != RTEMS_SUCCESSFUL) { |
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| 420 | task_pool_done(0); |
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| 421 | syslog(LOG_ERR, "ftpd: Can not create semaphores"); |
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| 422 | return 0; |
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| 423 | } |
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| 424 | |
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| 425 | task_pool.info = (FTPD_SessionInfo_t*) |
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| 426 | malloc(sizeof(FTPD_SessionInfo_t) * count); |
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| 427 | task_pool.queue = (FTPD_SessionInfo_t**) |
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| 428 | malloc(sizeof(FTPD_SessionInfo_t*) * count); |
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| 429 | if (NULL == task_pool.info || NULL == task_pool.queue) |
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| 430 | { |
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| 431 | task_pool_done(0); |
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| 432 | syslog(LOG_ERR, "ftpd: Not enough memory"); |
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| 433 | return 0; |
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| 434 | } |
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| 435 | |
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| 436 | for(i = 0; i < count; ++i) |
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| 437 | { |
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| 438 | FTPD_SessionInfo_t *info = &task_pool.info[i]; |
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| 439 | sc = rtems_task_create(rtems_build_name('F', 'T', 'P', id), |
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| 440 | priority, FTPD_STACKSIZE, |
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| 441 | RTEMS_PREEMPT | RTEMS_NO_TIMESLICE | |
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| 442 | RTEMS_NO_ASR | RTEMS_INTERRUPT_LEVEL(0), |
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| 443 | RTEMS_NO_FLOATING_POINT | RTEMS_LOCAL, |
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| 444 | &info->tid); |
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| 445 | if (sc == RTEMS_SUCCESSFUL) |
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| 446 | { |
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| 447 | sc = rtems_task_start( |
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| 448 | info->tid, session, (rtems_task_argument)info); |
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| 449 | if (sc != RTEMS_SUCCESSFUL) |
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| 450 | task_pool_done(i); |
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| 451 | } |
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| 452 | else |
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| 453 | task_pool_done(i + 1); |
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| 454 | if (sc != RTEMS_SUCCESSFUL) |
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| 455 | { |
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| 456 | syslog(LOG_ERR, "ftpd: Could not create/start FTPD session: %s", |
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| 457 | rtems_status_text(sc)); |
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| 458 | return 0; |
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| 459 | } |
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| 460 | task_pool.queue[i] = task_pool.info + i; |
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| 461 | if (++id > 'z') |
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| 462 | id = 'a'; |
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| 463 | } |
---|
| 464 | task_pool.count = count; |
---|
| 465 | return 1; |
---|
| 466 | } |
---|
| 467 | |
---|
| 468 | /*PAGE |
---|
| 469 | * |
---|
| 470 | * task_pool_obtain |
---|
| 471 | * |
---|
| 472 | * Obtain free task from task pool. |
---|
| 473 | * |
---|
| 474 | * Input parameters: |
---|
| 475 | * NONE |
---|
| 476 | * |
---|
| 477 | * Output parameters: |
---|
| 478 | * returns pointer to the corresponding SessionInfo structure on success, |
---|
| 479 | * NULL if there are no free tasks in the pool. |
---|
| 480 | * |
---|
| 481 | */ |
---|
| 482 | static FTPD_SessionInfo_t* |
---|
| 483 | task_pool_obtain() |
---|
| 484 | { |
---|
| 485 | FTPD_SessionInfo_t* info = 0; |
---|
| 486 | rtems_status_code sc; |
---|
| 487 | sc = rtems_semaphore_obtain(task_pool.sem, RTEMS_NO_WAIT, RTEMS_NO_TIMEOUT); |
---|
| 488 | if (sc == RTEMS_SUCCESSFUL) |
---|
| 489 | { |
---|
| 490 | rtems_semaphore_obtain(task_pool.mutex, RTEMS_WAIT, RTEMS_NO_TIMEOUT); |
---|
| 491 | info = task_pool.queue[task_pool.head]; |
---|
| 492 | if(++task_pool.head >= task_pool.count) |
---|
| 493 | task_pool.head = 0; |
---|
| 494 | rtems_semaphore_release(task_pool.mutex); |
---|
| 495 | } |
---|
| 496 | return info; |
---|
| 497 | } |
---|
| 498 | |
---|
| 499 | /*PAGE |
---|
| 500 | * |
---|
| 501 | * task_pool_release |
---|
| 502 | * |
---|
| 503 | * Return task obtained by 'obtain()' back to the task pool. |
---|
| 504 | * |
---|
| 505 | * Input parameters: |
---|
| 506 | * info - pointer to corresponding SessionInfo structure. |
---|
| 507 | * |
---|
| 508 | * Output parameters: |
---|
| 509 | * NONE |
---|
| 510 | * |
---|
| 511 | */ |
---|
| 512 | static void |
---|
| 513 | task_pool_release(FTPD_SessionInfo_t* info) |
---|
| 514 | { |
---|
| 515 | rtems_semaphore_obtain(task_pool.mutex, RTEMS_WAIT, RTEMS_NO_TIMEOUT); |
---|
| 516 | task_pool.queue[task_pool.tail] = info; |
---|
| 517 | if(++task_pool.tail >= task_pool.count) |
---|
| 518 | task_pool.tail = 0; |
---|
| 519 | rtems_semaphore_release(task_pool.mutex); |
---|
| 520 | rtems_semaphore_release(task_pool.sem); |
---|
| 521 | } |
---|
| 522 | |
---|
| 523 | /* |
---|
| 524 | * End of task pool routines |
---|
| 525 | */ |
---|
| 526 | |
---|
[38371dbe] | 527 | /*PAGE |
---|
| 528 | * |
---|
| 529 | * Function: send_reply |
---|
| 530 | * |
---|
| 531 | * |
---|
| 532 | * This procedure sends a reply to the client via the control |
---|
| 533 | * connection. |
---|
| 534 | * |
---|
| 535 | * |
---|
| 536 | * Input parameters: |
---|
| 537 | * code - 3-digit reply code. |
---|
| 538 | * text - Reply text. |
---|
| 539 | * |
---|
| 540 | * Output parameters: |
---|
| 541 | * NONE |
---|
| 542 | */ |
---|
| 543 | static void |
---|
| 544 | send_reply(FTPD_SessionInfo_t *info, int code, char *text) |
---|
| 545 | { |
---|
| 546 | char const* s = (info->xfer_mode == TYPE_A) ? "\r" : ""; |
---|
| 547 | /* If a text reply exists, add it to the reply data. */ |
---|
| 548 | if (text != NULL) |
---|
| 549 | fprintf(info->ctrl_fp, "%d %.70s%s\n", code, text, s); |
---|
| 550 | else |
---|
| 551 | fprintf(info->ctrl_fp, "%d%s\n", code, s); |
---|
| 552 | fflush(info->ctrl_fp); |
---|
| 553 | } |
---|
| 554 | |
---|
| 555 | |
---|
| 556 | /*PAGE |
---|
| 557 | * |
---|
| 558 | * close_socket |
---|
| 559 | * |
---|
| 560 | * Close socket. |
---|
| 561 | * |
---|
| 562 | * Input parameters: |
---|
| 563 | * s - socket descriptor. |
---|
| 564 | * seconds - number of seconds the timeout should be, |
---|
| 565 | * if >= 0 - infinite timeout (no timeout). |
---|
| 566 | * |
---|
| 567 | * Output parameters: |
---|
| 568 | * returns 1 on success, 0 on failure. |
---|
| 569 | */ |
---|
| 570 | static int |
---|
| 571 | set_socket_timeout(int s, int seconds) |
---|
| 572 | { |
---|
| 573 | int res = 0; |
---|
| 574 | struct timeval tv; |
---|
| 575 | int len = sizeof(tv); |
---|
| 576 | |
---|
| 577 | if(seconds < 0) |
---|
| 578 | seconds = 0; |
---|
| 579 | tv.tv_usec = 0; |
---|
| 580 | tv.tv_sec = seconds; |
---|
| 581 | if(0 != setsockopt(s, SOL_SOCKET, SO_SNDTIMEO, &tv, len)) |
---|
| 582 | syslog(LOG_ERR, "ftpd: Can't set send timeout on socket: %s.", serr()); |
---|
| 583 | else if(0 != setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, &tv, len)) |
---|
| 584 | syslog(LOG_ERR, "ftpd: Can't set receive timeout on socket: %s.", serr()); |
---|
| 585 | else |
---|
| 586 | res = 1; |
---|
| 587 | return res; |
---|
| 588 | } |
---|
| 589 | |
---|
[3f777d0e] | 590 | /*PAGE |
---|
| 591 | * |
---|
| 592 | * close_socket |
---|
| 593 | * |
---|
| 594 | * Close socket. |
---|
| 595 | * |
---|
| 596 | * Input parameters: |
---|
| 597 | * s - socket descriptor to be closed. |
---|
| 598 | * |
---|
| 599 | * Output parameters: |
---|
| 600 | * returns 1 on success, 0 on failure |
---|
| 601 | */ |
---|
| 602 | static int |
---|
| 603 | close_socket(int s) |
---|
| 604 | { |
---|
| 605 | if (0 <= s) |
---|
| 606 | { |
---|
| 607 | if (0 != close(s)) |
---|
| 608 | { |
---|
| 609 | shutdown(s, 2); |
---|
| 610 | if (0 != close(s)) |
---|
| 611 | return 0; |
---|
| 612 | } |
---|
| 613 | } |
---|
| 614 | return 1; |
---|
| 615 | } |
---|
| 616 | |
---|
[38371dbe] | 617 | /*PAGE |
---|
| 618 | * |
---|
| 619 | * data_socket |
---|
| 620 | * |
---|
| 621 | * Create data socket for session. |
---|
| 622 | * |
---|
| 623 | * Input parameters: |
---|
| 624 | * info - corresponding SessionInfo structure |
---|
| 625 | * |
---|
| 626 | * Output parameters: |
---|
| 627 | * returns socket descriptor, or -1 if failure |
---|
| 628 | * |
---|
| 629 | */ |
---|
| 630 | static int |
---|
| 631 | data_socket(FTPD_SessionInfo_t *info) |
---|
| 632 | { |
---|
| 633 | int s = info->pasv_socket; |
---|
| 634 | if(0 > s) |
---|
| 635 | { |
---|
| 636 | int on = 1; |
---|
| 637 | s = socket(PF_INET, SOCK_STREAM, 0); |
---|
| 638 | if(0 > s) |
---|
| 639 | send_reply(info, 425, "Can't create data socket."); |
---|
| 640 | else if(0 > setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on))) |
---|
| 641 | { |
---|
| 642 | close_socket(s); |
---|
| 643 | s = -1; |
---|
| 644 | } |
---|
| 645 | else |
---|
| 646 | { |
---|
| 647 | struct sockaddr_in data_source; |
---|
| 648 | int tries; |
---|
| 649 | |
---|
| 650 | /* anchor socket to avoid multi-homing problems */ |
---|
| 651 | data_source = info->ctrl_addr; |
---|
| 652 | data_source.sin_port = htons(20); /* ftp-data port */ |
---|
| 653 | for(tries = 1; tries < 10; ++tries) |
---|
| 654 | { |
---|
[07fbfced] | 655 | errno = 0; |
---|
[38371dbe] | 656 | if(bind(s, (struct sockaddr *)&data_source, sizeof(data_source)) >= 0) |
---|
| 657 | break; |
---|
| 658 | if (errno != EADDRINUSE) |
---|
| 659 | tries = 10; |
---|
| 660 | else |
---|
| 661 | rtems_task_wake_after(tries * 10); |
---|
| 662 | } |
---|
| 663 | if(tries >= 10) |
---|
| 664 | { |
---|
| 665 | send_reply(info, 425, "Can't bind data socket."); |
---|
| 666 | close_socket(s); |
---|
| 667 | s = -1; |
---|
| 668 | } |
---|
| 669 | else |
---|
| 670 | { |
---|
| 671 | struct sockaddr_in *data_dest = |
---|
| 672 | (info->use_default) ? &info->def_addr : &info->data_addr; |
---|
| 673 | if(0 > connect(s, (struct sockaddr *)data_dest, sizeof(*data_dest))) |
---|
| 674 | { |
---|
| 675 | send_reply(info, 425, "Can't connect data socket."); |
---|
| 676 | close_socket(s); |
---|
| 677 | s = -1; |
---|
| 678 | } |
---|
| 679 | } |
---|
| 680 | } |
---|
| 681 | } |
---|
| 682 | info->data_socket = s; |
---|
| 683 | info->use_default = 1; |
---|
| 684 | if(s >= 0) |
---|
| 685 | set_socket_timeout(s, info->idle); |
---|
| 686 | return s; |
---|
| 687 | } |
---|
| 688 | |
---|
| 689 | /*PAGE |
---|
| 690 | * |
---|
| 691 | * close_data_socket |
---|
| 692 | * |
---|
| 693 | * Close data socket for session. |
---|
| 694 | * |
---|
| 695 | * Input parameters: |
---|
| 696 | * info - corresponding SessionInfo structure |
---|
| 697 | * |
---|
| 698 | * Output parameters: |
---|
| 699 | * NONE |
---|
| 700 | * |
---|
| 701 | */ |
---|
| 702 | static void |
---|
| 703 | close_data_socket(FTPD_SessionInfo_t *info) |
---|
| 704 | { |
---|
[07fbfced] | 705 | /* As at most one data socket could be open simultaneously and in some cases |
---|
| 706 | data_socket == pasv_socket, we select socket to close, then close it. */ |
---|
| 707 | int s = info->data_socket; |
---|
[38371dbe] | 708 | if(0 > s) |
---|
[07fbfced] | 709 | s = info->pasv_socket; |
---|
[38371dbe] | 710 | if(!close_socket(s)) |
---|
| 711 | syslog(LOG_ERR, "ftpd: Error closing data socket."); |
---|
| 712 | info->data_socket = -1; |
---|
| 713 | info->pasv_socket = -1; |
---|
| 714 | info->use_default = 1; |
---|
| 715 | } |
---|
| 716 | |
---|
[3f777d0e] | 717 | /*PAGE |
---|
| 718 | * |
---|
| 719 | * close_stream |
---|
| 720 | * |
---|
[38371dbe] | 721 | * Close control stream of session. |
---|
[3f777d0e] | 722 | * |
---|
| 723 | * Input parameters: |
---|
| 724 | * info - corresponding SessionInfo structure |
---|
| 725 | * |
---|
| 726 | * Output parameters: |
---|
| 727 | * NONE |
---|
| 728 | * |
---|
| 729 | */ |
---|
| 730 | static void |
---|
| 731 | close_stream(FTPD_SessionInfo_t* info) |
---|
| 732 | { |
---|
| 733 | if (NULL != info->ctrl_fp) |
---|
| 734 | { |
---|
| 735 | if (0 != fclose(info->ctrl_fp)) |
---|
| 736 | { |
---|
| 737 | syslog(LOG_ERR, "ftpd: Could not close control stream: %s", serr()); |
---|
| 738 | } |
---|
| 739 | else |
---|
[38371dbe] | 740 | info->ctrl_socket = -1; |
---|
[3f777d0e] | 741 | } |
---|
| 742 | |
---|
[38371dbe] | 743 | if (!close_socket(info->ctrl_socket)) |
---|
[3f777d0e] | 744 | syslog(LOG_ERR, "ftpd: Could not close control socket: %s", serr()); |
---|
| 745 | |
---|
| 746 | info->ctrl_fp = NULL; |
---|
[38371dbe] | 747 | info->ctrl_socket = -1; |
---|
[3f777d0e] | 748 | } |
---|
[6d0e13c] | 749 | |
---|
| 750 | |
---|
[3f777d0e] | 751 | /*PAGE |
---|
| 752 | * |
---|
| 753 | * send_mode_reply |
---|
| 754 | * |
---|
| 755 | * Sends BINARY/ASCII reply string depending on current transfer mode. |
---|
| 756 | * |
---|
| 757 | * Input parameters: |
---|
| 758 | * info - corresponding SessionInfo structure |
---|
| 759 | * |
---|
| 760 | * Output parameters: |
---|
| 761 | * NONE |
---|
| 762 | * |
---|
| 763 | */ |
---|
| 764 | static void |
---|
| 765 | send_mode_reply(FTPD_SessionInfo_t *info) |
---|
| 766 | { |
---|
| 767 | if(info->xfer_mode == TYPE_I) |
---|
| 768 | send_reply(info, 150, "Opening BINARY mode data connection."); |
---|
| 769 | else |
---|
| 770 | send_reply(info, 150, "Opening ASCII mode data connection."); |
---|
[6d0e13c] | 771 | } |
---|
| 772 | |
---|
[3f777d0e] | 773 | /*PAGE |
---|
| 774 | * |
---|
[38371dbe] | 775 | * command_retrieve |
---|
[3f777d0e] | 776 | * |
---|
[38371dbe] | 777 | * Perform the "RETR" command (send file to client). |
---|
[3f777d0e] | 778 | * |
---|
| 779 | * Input parameters: |
---|
| 780 | * info - corresponding SessionInfo structure |
---|
[38371dbe] | 781 | * char *filename - source filename. |
---|
[3f777d0e] | 782 | * |
---|
| 783 | * Output parameters: |
---|
[38371dbe] | 784 | * NONE |
---|
[3f777d0e] | 785 | * |
---|
| 786 | */ |
---|
[38371dbe] | 787 | static void |
---|
| 788 | command_retrieve(FTPD_SessionInfo_t *info, char const *filename) |
---|
[6d0e13c] | 789 | { |
---|
[3f777d0e] | 790 | int s = -1; |
---|
| 791 | int fd = -1; |
---|
| 792 | char buf[FTPD_DATASIZE]; |
---|
| 793 | int res = 0; |
---|
[38371dbe] | 794 | |
---|
| 795 | if(!can_read()) |
---|
| 796 | { |
---|
| 797 | send_reply(info, 550, "Access denied."); |
---|
| 798 | return; |
---|
| 799 | } |
---|
[3f777d0e] | 800 | |
---|
[07fbfced] | 801 | if (0 > (fd = open(filename, O_RDONLY))) |
---|
[3f777d0e] | 802 | { |
---|
[38371dbe] | 803 | send_reply(info, 550, "Error opening file."); |
---|
| 804 | return; |
---|
[3f777d0e] | 805 | } |
---|
| 806 | |
---|
| 807 | send_mode_reply(info); |
---|
| 808 | |
---|
| 809 | s = data_socket(info); |
---|
[38371dbe] | 810 | |
---|
[3f777d0e] | 811 | if (0 <= s) |
---|
| 812 | { |
---|
[38371dbe] | 813 | int n = -1; |
---|
| 814 | |
---|
| 815 | if(info->xfer_mode == TYPE_I) |
---|
| 816 | { |
---|
| 817 | while ((n = read(fd, buf, FTPD_DATASIZE)) > 0) |
---|
| 818 | { |
---|
| 819 | if(send(s, buf, n, 0) != n) |
---|
| 820 | break; |
---|
| 821 | } |
---|
| 822 | } |
---|
| 823 | else if (info->xfer_mode == TYPE_A) |
---|
[3f777d0e] | 824 | { |
---|
[38371dbe] | 825 | int rest = 0; |
---|
| 826 | while (rest == 0 && (n = read(fd, buf, FTPD_DATASIZE)) > 0) |
---|
| 827 | { |
---|
| 828 | char const* e = buf; |
---|
| 829 | char const* b; |
---|
| 830 | int i; |
---|
| 831 | rest = n; |
---|
| 832 | do |
---|
| 833 | { |
---|
| 834 | char lf = '\0'; |
---|
| 835 | |
---|
| 836 | b = e; |
---|
| 837 | for(i = 0; i < rest; ++i, ++e) |
---|
| 838 | { |
---|
| 839 | if(*e == '\n') |
---|
| 840 | { |
---|
| 841 | lf = '\n'; |
---|
| 842 | break; |
---|
| 843 | } |
---|
| 844 | } |
---|
| 845 | if(send(s, b, i, 0) != i) |
---|
| 846 | break; |
---|
| 847 | if(lf == '\n') |
---|
| 848 | { |
---|
| 849 | if(send(s, "\r\n", 2, 0) != 2) |
---|
| 850 | break; |
---|
| 851 | ++e; |
---|
| 852 | ++i; |
---|
| 853 | } |
---|
| 854 | } |
---|
| 855 | while((rest -= i) > 0); |
---|
| 856 | } |
---|
[3f777d0e] | 857 | } |
---|
| 858 | |
---|
| 859 | if (0 == n) |
---|
| 860 | { |
---|
| 861 | if (0 == close(fd)) |
---|
| 862 | { |
---|
| 863 | fd = -1; |
---|
| 864 | res = 1; |
---|
| 865 | } |
---|
| 866 | } |
---|
| 867 | } |
---|
[6d0e13c] | 868 | |
---|
[3f777d0e] | 869 | if (-1 != fd) |
---|
| 870 | close(fd); |
---|
[6d0e13c] | 871 | |
---|
[38371dbe] | 872 | if (0 == res) |
---|
| 873 | send_reply(info, 451, "File read error."); |
---|
| 874 | else |
---|
| 875 | send_reply(info, 226, "Transfer complete."); |
---|
| 876 | |
---|
| 877 | close_data_socket(info); |
---|
[6d0e13c] | 878 | |
---|
[38371dbe] | 879 | return; |
---|
[6d0e13c] | 880 | } |
---|
| 881 | |
---|
| 882 | |
---|
[07fbfced] | 883 | /*PAGE |
---|
| 884 | * |
---|
| 885 | * discard |
---|
| 886 | * |
---|
| 887 | * Analog of `write' routine that just discards passed data |
---|
| 888 | * |
---|
| 889 | * Input parameters: |
---|
| 890 | * fd - file descriptor (ignored) |
---|
| 891 | * buf - data to write (ignored) |
---|
| 892 | * count - number of bytes in `buf' |
---|
| 893 | * |
---|
| 894 | * Output parameters: |
---|
| 895 | * returns `count' |
---|
| 896 | * |
---|
| 897 | */ |
---|
| 898 | static ssize_t |
---|
| 899 | discard(int fd, void const* buf, size_t count) |
---|
| 900 | { |
---|
| 901 | (void)fd; |
---|
| 902 | (void)buf; |
---|
| 903 | return count; |
---|
| 904 | } |
---|
| 905 | |
---|
[38371dbe] | 906 | /*PAGE |
---|
| 907 | * |
---|
| 908 | * command_store |
---|
| 909 | * |
---|
| 910 | * Performs the "STOR" command (receive data from client). |
---|
| 911 | * |
---|
| 912 | * Input parameters: |
---|
| 913 | * info - corresponding SessionInfo structure |
---|
| 914 | * char *filename - Destination filename. |
---|
| 915 | * |
---|
| 916 | * Output parameters: |
---|
| 917 | * NONE |
---|
| 918 | */ |
---|
| 919 | static void |
---|
| 920 | command_store(FTPD_SessionInfo_t *info, char const *filename) |
---|
[6d0e13c] | 921 | { |
---|
[3f777d0e] | 922 | int s; |
---|
| 923 | int n; |
---|
| 924 | unsigned long size = 0; |
---|
| 925 | struct rtems_ftpd_hook *usehook = NULL; |
---|
| 926 | char buf[FTPD_DATASIZE]; |
---|
[38371dbe] | 927 | int res = 1; |
---|
| 928 | int bare_lfs = 0; |
---|
[07fbfced] | 929 | int null = 0; |
---|
| 930 | typedef ssize_t (*WriteProc)(int, void const*, size_t); |
---|
| 931 | WriteProc wrt = &write; |
---|
[3f777d0e] | 932 | |
---|
[38371dbe] | 933 | if(!can_write()) |
---|
| 934 | { |
---|
| 935 | send_reply(info, 550, "Access denied."); |
---|
| 936 | return; |
---|
| 937 | } |
---|
| 938 | |
---|
[3f777d0e] | 939 | send_mode_reply(info); |
---|
| 940 | |
---|
| 941 | s = data_socket(info); |
---|
| 942 | if(0 > s) |
---|
[38371dbe] | 943 | return; |
---|
[3f777d0e] | 944 | |
---|
[07fbfced] | 945 | null = !strcmp("/dev/null", filename); |
---|
[3f777d0e] | 946 | if (null) |
---|
| 947 | { |
---|
[38371dbe] | 948 | /* File "/dev/null" just throws data away. |
---|
[07fbfced] | 949 | * FIXME: this is hack. Using `/dev/null' filesystem entry would be |
---|
| 950 | * better. |
---|
[38371dbe] | 951 | */ |
---|
[07fbfced] | 952 | wrt = &discard; |
---|
[3f777d0e] | 953 | } |
---|
[07fbfced] | 954 | |
---|
| 955 | if (!null && rtems_ftpd_configuration.hooks != NULL) |
---|
[3f777d0e] | 956 | { |
---|
[38371dbe] | 957 | |
---|
| 958 | /* Search our list of hooks to see if we need to do something special. */ |
---|
[3f777d0e] | 959 | struct rtems_ftpd_hook *hook; |
---|
| 960 | int i; |
---|
| 961 | |
---|
| 962 | i = 0; |
---|
| 963 | hook = &rtems_ftpd_configuration.hooks[i++]; |
---|
| 964 | while (hook->filename != NULL) |
---|
| 965 | { |
---|
[a8c33268] | 966 | if (!strcmp(hook->filename, filename)) |
---|
[85e24a3] | 967 | { |
---|
[3f777d0e] | 968 | usehook = hook; |
---|
| 969 | break; |
---|
[85e24a3] | 970 | } |
---|
[3f777d0e] | 971 | hook = &rtems_ftpd_configuration.hooks[i++]; |
---|
| 972 | } |
---|
| 973 | } |
---|
| 974 | |
---|
| 975 | if (usehook != NULL) |
---|
| 976 | { |
---|
| 977 | /* |
---|
| 978 | * OSV: FIXME: Small buffer could be used and hook routine |
---|
[38371dbe] | 979 | * called multiple times instead. Alternatively, the support could be |
---|
[3f777d0e] | 980 | * removed entirely in favor of configuring RTEMS pseudo-device with |
---|
| 981 | * given name. |
---|
| 982 | */ |
---|
| 983 | |
---|
| 984 | char *bigBufr; |
---|
| 985 | size_t filesize = rtems_ftpd_configuration.max_hook_filesize + 1; |
---|
| 986 | |
---|
[38371dbe] | 987 | /* |
---|
[3f777d0e] | 988 | * Allocate space for our "file". |
---|
[38371dbe] | 989 | */ |
---|
[3f777d0e] | 990 | bigBufr = (char *)malloc(filesize); |
---|
| 991 | if (bigBufr == NULL) |
---|
| 992 | { |
---|
[38371dbe] | 993 | send_reply(info, 451, "Local resource failure: malloc."); |
---|
| 994 | close_data_socket(info); |
---|
| 995 | return; |
---|
[3f777d0e] | 996 | } |
---|
| 997 | |
---|
[38371dbe] | 998 | /* |
---|
[3f777d0e] | 999 | * Retrieve the file into our buffer space. |
---|
[38371dbe] | 1000 | */ |
---|
[3f777d0e] | 1001 | size = 0; |
---|
[38371dbe] | 1002 | while ((n = recv(s, bigBufr + size, filesize - size, 0)) > 0) |
---|
[3f777d0e] | 1003 | { |
---|
| 1004 | size += n; |
---|
| 1005 | } |
---|
| 1006 | if (size >= filesize) |
---|
| 1007 | { |
---|
[38371dbe] | 1008 | send_reply(info, 451, "File too long: buffer size exceeded."); |
---|
[3f777d0e] | 1009 | free(bigBufr); |
---|
[38371dbe] | 1010 | close_data_socket(info); |
---|
| 1011 | return; |
---|
[3f777d0e] | 1012 | } |
---|
| 1013 | |
---|
[38371dbe] | 1014 | /* |
---|
[3f777d0e] | 1015 | * Call our hook. |
---|
[38371dbe] | 1016 | */ |
---|
| 1017 | res = (usehook->hook_function)(bigBufr, size) == 0; |
---|
| 1018 | free(bigBufr); |
---|
| 1019 | if(!res) |
---|
[3f777d0e] | 1020 | { |
---|
[38371dbe] | 1021 | send_reply(info, 451, "File processing failed."); |
---|
| 1022 | close_data_socket(info); |
---|
| 1023 | return; |
---|
[3f777d0e] | 1024 | } |
---|
| 1025 | } |
---|
| 1026 | else |
---|
| 1027 | { |
---|
[07fbfced] | 1028 | /* Data transfer to regular file or /dev/null. */ |
---|
| 1029 | int fd = 0; |
---|
| 1030 | |
---|
| 1031 | if(!null) |
---|
| 1032 | fd = creat(filename, |
---|
| 1033 | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH); |
---|
[3f777d0e] | 1034 | |
---|
| 1035 | if (0 > fd) |
---|
| 1036 | { |
---|
[38371dbe] | 1037 | send_reply(info, 550, "Error creating file."); |
---|
| 1038 | close_data_socket(info); |
---|
| 1039 | return; |
---|
[3f777d0e] | 1040 | } |
---|
[85e24a3] | 1041 | |
---|
[38371dbe] | 1042 | if(info->xfer_mode == TYPE_I) |
---|
[3f777d0e] | 1043 | { |
---|
[38371dbe] | 1044 | while ((n = recv(s, buf, FTPD_DATASIZE, 0)) > 0) |
---|
[6d0e13c] | 1045 | { |
---|
[07fbfced] | 1046 | if (wrt(fd, buf, n) != n) |
---|
[38371dbe] | 1047 | { |
---|
| 1048 | res = 0; |
---|
| 1049 | break; |
---|
| 1050 | } |
---|
[6d0e13c] | 1051 | } |
---|
[3f777d0e] | 1052 | } |
---|
[38371dbe] | 1053 | else if(info->xfer_mode == TYPE_A) |
---|
[3f777d0e] | 1054 | { |
---|
[38371dbe] | 1055 | int rest = 0; |
---|
| 1056 | int pended_cr = 0; |
---|
| 1057 | while (res && rest == 0 && (n = recv(s, buf, FTPD_DATASIZE, 0)) > 0) |
---|
| 1058 | { |
---|
| 1059 | char const* e = buf; |
---|
| 1060 | char const* b; |
---|
| 1061 | int i; |
---|
| 1062 | |
---|
| 1063 | rest = n; |
---|
| 1064 | if(pended_cr && *e != '\n') |
---|
| 1065 | { |
---|
| 1066 | char const lf = '\r'; |
---|
| 1067 | pended_cr = 0; |
---|
[07fbfced] | 1068 | if(wrt(fd, &lf, 1) != 1) |
---|
[38371dbe] | 1069 | { |
---|
| 1070 | res = 0; |
---|
| 1071 | break; |
---|
| 1072 | } |
---|
| 1073 | } |
---|
| 1074 | do |
---|
| 1075 | { |
---|
| 1076 | int count; |
---|
| 1077 | int sub = 0; |
---|
| 1078 | |
---|
| 1079 | b = e; |
---|
| 1080 | for(i = 0; i < rest; ++i, ++e) |
---|
| 1081 | { |
---|
| 1082 | int pcr = pended_cr; |
---|
| 1083 | pended_cr = 0; |
---|
| 1084 | if(*e == '\r') |
---|
| 1085 | { |
---|
| 1086 | pended_cr = 1; |
---|
| 1087 | } |
---|
| 1088 | else if(*e == '\n') |
---|
| 1089 | { |
---|
| 1090 | if(pcr) |
---|
| 1091 | { |
---|
| 1092 | sub = 2; |
---|
| 1093 | ++i; |
---|
| 1094 | ++e; |
---|
| 1095 | break; |
---|
| 1096 | } |
---|
| 1097 | ++bare_lfs; |
---|
| 1098 | } |
---|
| 1099 | } |
---|
| 1100 | if(res == 0) |
---|
| 1101 | break; |
---|
| 1102 | count = i - sub - pended_cr; |
---|
[07fbfced] | 1103 | if(count > 0 && wrt(fd, b, count) != count) |
---|
[38371dbe] | 1104 | { |
---|
| 1105 | res = 0; |
---|
| 1106 | break; |
---|
| 1107 | } |
---|
[07fbfced] | 1108 | if(sub == 2 && wrt(fd, e - 1, 1) != 1) |
---|
[38371dbe] | 1109 | res = 0; |
---|
| 1110 | } |
---|
| 1111 | while((rest -= i) > 0); |
---|
| 1112 | } |
---|
| 1113 | } |
---|
| 1114 | |
---|
| 1115 | if (0 > close(fd) || res == 0) |
---|
| 1116 | { |
---|
| 1117 | send_reply(info, 452, "Error writing file."); |
---|
| 1118 | close_data_socket(info); |
---|
| 1119 | return; |
---|
[3f777d0e] | 1120 | } |
---|
| 1121 | } |
---|
| 1122 | |
---|
[38371dbe] | 1123 | if (bare_lfs > 0) |
---|
| 1124 | { |
---|
| 1125 | snprintf(buf, FTPD_BUFSIZE, |
---|
| 1126 | "Transfer complete. WARNING! %d bare linefeeds received in ASCII mode.", |
---|
| 1127 | bare_lfs); |
---|
| 1128 | send_reply(info, 226, buf); |
---|
| 1129 | } |
---|
| 1130 | else |
---|
| 1131 | send_reply(info, 226, "Transfer complete."); |
---|
| 1132 | close_data_socket(info); |
---|
| 1133 | |
---|
[3f777d0e] | 1134 | } |
---|
[6d0e13c] | 1135 | |
---|
[3f777d0e] | 1136 | |
---|
| 1137 | /*PAGE |
---|
| 1138 | * |
---|
| 1139 | * send_dirline |
---|
| 1140 | * |
---|
| 1141 | * Sends one line of LIST command reply corresponding to single file. |
---|
| 1142 | * |
---|
| 1143 | * Input parameters: |
---|
| 1144 | * s - socket descriptor to send data to |
---|
[38371dbe] | 1145 | * wide - if 0, send only file name. If not 0, send 'stat' info as well in |
---|
[3f777d0e] | 1146 | * "ls -l" format. |
---|
| 1147 | * curTime - current time |
---|
| 1148 | * path - path to be prepended to what is given by 'add' |
---|
| 1149 | * add - path to be appended to what is given by 'path', the resulting path |
---|
| 1150 | * is then passed to 'stat()' routine |
---|
| 1151 | * name - file name to be reported in output |
---|
| 1152 | * buf - buffer for temporary data |
---|
| 1153 | * |
---|
| 1154 | * Output parameters: |
---|
[38371dbe] | 1155 | * returns 0 on failure, 1 on success |
---|
[3f777d0e] | 1156 | * |
---|
| 1157 | */ |
---|
[38371dbe] | 1158 | static int |
---|
[3f777d0e] | 1159 | send_dirline(int s, int wide, time_t curTime, char const* path, |
---|
| 1160 | char const* add, char const* fname, char* buf) |
---|
| 1161 | { |
---|
| 1162 | if(wide) |
---|
| 1163 | { |
---|
| 1164 | struct stat stat_buf; |
---|
| 1165 | |
---|
| 1166 | int plen = strlen(path); |
---|
| 1167 | int alen = strlen(add); |
---|
| 1168 | if(plen == 0) |
---|
| 1169 | { |
---|
| 1170 | buf[plen++] = '/'; |
---|
| 1171 | buf[plen] = '\0'; |
---|
| 1172 | } |
---|
| 1173 | else |
---|
| 1174 | { |
---|
| 1175 | strcpy(buf, path); |
---|
| 1176 | if(alen > 0 && buf[plen - 1] != '/') |
---|
[85e24a3] | 1177 | { |
---|
[3f777d0e] | 1178 | buf[plen++] = '/'; |
---|
| 1179 | if(plen >= FTPD_BUFSIZE) |
---|
[38371dbe] | 1180 | return 0; |
---|
[3f777d0e] | 1181 | buf[plen] = '\0'; |
---|
[85e24a3] | 1182 | } |
---|
[3f777d0e] | 1183 | } |
---|
| 1184 | if(plen + alen >= FTPD_BUFSIZE) |
---|
[38371dbe] | 1185 | return 0; |
---|
[3f777d0e] | 1186 | strcpy(buf + plen, add); |
---|
| 1187 | |
---|
| 1188 | if (stat(buf, &stat_buf) == 0) |
---|
| 1189 | { |
---|
| 1190 | int len; |
---|
| 1191 | struct tm bt; |
---|
| 1192 | time_t tf = stat_buf.st_mtime; |
---|
| 1193 | enum { SIZE = 80 }; |
---|
| 1194 | enum { SIX_MONTHS = 365*24*60*60/2 }; |
---|
| 1195 | char timeBuf[SIZE]; |
---|
| 1196 | gmtime_r(&tf, &bt); |
---|
| 1197 | if(curTime > tf + SIX_MONTHS || tf > curTime + SIX_MONTHS) |
---|
| 1198 | strftime (timeBuf, SIZE, "%b %d %Y", &bt); |
---|
[85e24a3] | 1199 | else |
---|
[3f777d0e] | 1200 | strftime (timeBuf, SIZE, "%b %d %H:%M", &bt); |
---|
| 1201 | |
---|
| 1202 | len = snprintf(buf, FTPD_BUFSIZE, |
---|
| 1203 | "%c%c%c%c%c%c%c%c%c%c 1 %5d %5d %11u %s %s\r\n", |
---|
| 1204 | (S_ISLNK(stat_buf.st_mode)?('l'): |
---|
| 1205 | (S_ISDIR(stat_buf.st_mode)?('d'):('-'))), |
---|
| 1206 | (stat_buf.st_mode & S_IRUSR)?('r'):('-'), |
---|
| 1207 | (stat_buf.st_mode & S_IWUSR)?('w'):('-'), |
---|
| 1208 | (stat_buf.st_mode & S_IXUSR)?('x'):('-'), |
---|
| 1209 | (stat_buf.st_mode & S_IRGRP)?('r'):('-'), |
---|
| 1210 | (stat_buf.st_mode & S_IWGRP)?('w'):('-'), |
---|
| 1211 | (stat_buf.st_mode & S_IXGRP)?('x'):('-'), |
---|
| 1212 | (stat_buf.st_mode & S_IROTH)?('r'):('-'), |
---|
| 1213 | (stat_buf.st_mode & S_IWOTH)?('w'):('-'), |
---|
| 1214 | (stat_buf.st_mode & S_IXOTH)?('x'):('-'), |
---|
| 1215 | (int)stat_buf.st_uid, |
---|
| 1216 | (int)stat_buf.st_gid, |
---|
| 1217 | (int)stat_buf.st_size, |
---|
| 1218 | timeBuf, |
---|
| 1219 | fname |
---|
| 1220 | ); |
---|
| 1221 | |
---|
[38371dbe] | 1222 | if(send(s, buf, len, 0) != len) |
---|
| 1223 | return 0; |
---|
[3f777d0e] | 1224 | } |
---|
| 1225 | } |
---|
| 1226 | else |
---|
| 1227 | { |
---|
| 1228 | int len = snprintf(buf, FTPD_BUFSIZE, "%s\r\n", fname); |
---|
[38371dbe] | 1229 | if(send(s, buf, len, 0) != len) |
---|
| 1230 | return 0; |
---|
[3f777d0e] | 1231 | } |
---|
[38371dbe] | 1232 | return 1; |
---|
[6d0e13c] | 1233 | } |
---|
| 1234 | |
---|
[38371dbe] | 1235 | /*PAGE |
---|
| 1236 | * |
---|
| 1237 | * command_list |
---|
| 1238 | * |
---|
| 1239 | * Send file list to client. |
---|
| 1240 | * |
---|
| 1241 | * Input parameters: |
---|
| 1242 | * info - corresponding SessionInfo structure |
---|
| 1243 | * char *fname - File (or directory) to list. |
---|
| 1244 | * |
---|
| 1245 | * Output parameters: |
---|
| 1246 | * NONE |
---|
| 1247 | */ |
---|
[6d0e13c] | 1248 | static void |
---|
[3f777d0e] | 1249 | command_list(FTPD_SessionInfo_t *info, char const *fname, int wide) |
---|
[6d0e13c] | 1250 | { |
---|
[3f777d0e] | 1251 | int s; |
---|
| 1252 | DIR *dirp = 0; |
---|
| 1253 | struct dirent *dp = 0; |
---|
| 1254 | struct stat stat_buf; |
---|
| 1255 | char buf[FTPD_BUFSIZE]; |
---|
| 1256 | time_t curTime; |
---|
[38371dbe] | 1257 | int sc = 1; |
---|
[3f777d0e] | 1258 | |
---|
| 1259 | send_reply(info, 150, "Opening ASCII mode data connection for LIST."); |
---|
| 1260 | |
---|
| 1261 | s = data_socket(info); |
---|
| 1262 | if(0 > s) |
---|
| 1263 | { |
---|
| 1264 | syslog(LOG_ERR, "ftpd: Error connecting to data socket."); |
---|
| 1265 | return; |
---|
| 1266 | } |
---|
| 1267 | |
---|
| 1268 | if(fname[0] == '\0') |
---|
| 1269 | fname = "."; |
---|
| 1270 | |
---|
[07fbfced] | 1271 | if (0 > stat(fname, &stat_buf)) |
---|
[3f777d0e] | 1272 | { |
---|
| 1273 | snprintf(buf, FTPD_BUFSIZE, |
---|
| 1274 | "%s: No such file or directory.\r\n", fname); |
---|
| 1275 | send(s, buf, strlen(buf), 0); |
---|
| 1276 | } |
---|
[07fbfced] | 1277 | else if (S_ISDIR(stat_buf.st_mode) && (NULL == (dirp = opendir(fname)))) |
---|
[3f777d0e] | 1278 | { |
---|
| 1279 | snprintf(buf, FTPD_BUFSIZE, |
---|
| 1280 | "%s: Can not open directory.\r\n", fname); |
---|
| 1281 | send(s, buf, strlen(buf), 0); |
---|
| 1282 | } |
---|
| 1283 | else |
---|
| 1284 | { |
---|
| 1285 | time(&curTime); |
---|
[38371dbe] | 1286 | if(!dirp && *fname) |
---|
[07fbfced] | 1287 | sc = sc && send_dirline(s, wide, curTime, fname, "", fname, buf); |
---|
[3f777d0e] | 1288 | else { |
---|
| 1289 | /* FIXME: need "." and ".." only when '-a' option is given */ |
---|
[07fbfced] | 1290 | sc = sc && send_dirline(s, wide, curTime, fname, "", ".", buf); |
---|
| 1291 | sc = sc && send_dirline(s, wide, curTime, fname, |
---|
| 1292 | (strcmp(fname, ftpd_root) ? ".." : ""), "..", buf); |
---|
[38371dbe] | 1293 | while (sc && (dp = readdir(dirp)) != NULL) |
---|
| 1294 | sc = sc && |
---|
[07fbfced] | 1295 | send_dirline(s, wide, curTime, fname, dp->d_name, dp->d_name, buf); |
---|
[3f777d0e] | 1296 | } |
---|
| 1297 | } |
---|
| 1298 | |
---|
| 1299 | if(dirp) |
---|
| 1300 | closedir(dirp); |
---|
[38371dbe] | 1301 | close_data_socket(info); |
---|
| 1302 | |
---|
| 1303 | if(sc) |
---|
| 1304 | send_reply(info, 226, "Transfer complete."); |
---|
| 1305 | else |
---|
| 1306 | send_reply(info, 426, "Connection aborted."); |
---|
[6d0e13c] | 1307 | } |
---|
| 1308 | |
---|
| 1309 | |
---|
[3f777d0e] | 1310 | /*PAGE |
---|
| 1311 | * |
---|
[07fbfced] | 1312 | * command_cwd |
---|
[3f777d0e] | 1313 | * |
---|
[07fbfced] | 1314 | * Change current working directory. |
---|
[3f777d0e] | 1315 | * |
---|
| 1316 | * Input parameters: |
---|
| 1317 | * info - corresponding SessionInfo structure |
---|
| 1318 | * dir - directory name passed in CWD command |
---|
| 1319 | * |
---|
| 1320 | * Output parameters: |
---|
[07fbfced] | 1321 | * NONE |
---|
[3f777d0e] | 1322 | * |
---|
[6d0e13c] | 1323 | */ |
---|
| 1324 | static void |
---|
[07fbfced] | 1325 | command_cwd(FTPD_SessionInfo_t *info, char *dir) |
---|
[6d0e13c] | 1326 | { |
---|
[07fbfced] | 1327 | if(chdir(dir) == 0) |
---|
[3f777d0e] | 1328 | send_reply(info, 250, "CWD command successful."); |
---|
| 1329 | else |
---|
| 1330 | send_reply(info, 550, "CWD command failed."); |
---|
| 1331 | } |
---|
[6d0e13c] | 1332 | |
---|
| 1333 | |
---|
[07fbfced] | 1334 | /*PAGE |
---|
| 1335 | * |
---|
| 1336 | * command_pwd |
---|
| 1337 | * |
---|
| 1338 | * Send current working directory to client. |
---|
| 1339 | * |
---|
| 1340 | * Input parameters: |
---|
| 1341 | * info - corresponding SessionInfo structure |
---|
| 1342 | * |
---|
| 1343 | * Output parameters: |
---|
| 1344 | * NONE |
---|
| 1345 | */ |
---|
| 1346 | static void |
---|
| 1347 | command_pwd(FTPD_SessionInfo_t *info) |
---|
| 1348 | { |
---|
| 1349 | char buf[FTPD_BUFSIZE]; |
---|
| 1350 | char const* cwd; |
---|
| 1351 | errno = 0; |
---|
| 1352 | buf[0] = '"'; |
---|
| 1353 | cwd = getcwd(buf + 1, FTPD_BUFSIZE - 4); |
---|
| 1354 | if(cwd) |
---|
| 1355 | { |
---|
| 1356 | int len = strlen(cwd); |
---|
| 1357 | static char const txt[] = "\" is the current directory."; |
---|
| 1358 | int size = sizeof(txt); |
---|
| 1359 | if(len + size + 1 >= FTPD_BUFSIZE) |
---|
| 1360 | size = FTPD_BUFSIZE - len - 2; |
---|
| 1361 | memcpy(buf + len + 1, txt, size); |
---|
| 1362 | buf[len + size] = '\0'; |
---|
| 1363 | send_reply(info, 250, buf); |
---|
| 1364 | } |
---|
| 1365 | else { |
---|
| 1366 | snprintf(buf, FTPD_BUFSIZE, "Error: %s.", serr()); |
---|
| 1367 | send_reply(info, 452, buf); |
---|
| 1368 | } |
---|
| 1369 | } |
---|
[6d0e13c] | 1370 | |
---|
[3f777d0e] | 1371 | /*PAGE |
---|
| 1372 | * |
---|
| 1373 | * command_mdtm |
---|
| 1374 | * |
---|
[38371dbe] | 1375 | * Handle FTP MDTM command (send file modification time to client)/ |
---|
[3f777d0e] | 1376 | * |
---|
| 1377 | * Input parameters: |
---|
| 1378 | * info - corresponding SessionInfo structure |
---|
| 1379 | * fname - file name passed in MDTM command |
---|
| 1380 | * |
---|
| 1381 | * Output parameters: |
---|
| 1382 | * info->cwd is set to new CWD value. |
---|
| 1383 | */ |
---|
| 1384 | static void |
---|
| 1385 | command_mdtm(FTPD_SessionInfo_t *info, char const* fname) |
---|
| 1386 | { |
---|
| 1387 | struct stat stbuf; |
---|
| 1388 | char buf[FTPD_BUFSIZE]; |
---|
| 1389 | |
---|
[07fbfced] | 1390 | if (0 > stat(fname, &stbuf)) |
---|
[3f777d0e] | 1391 | { |
---|
| 1392 | snprintf(buf, FTPD_BUFSIZE, "%s: %s.", fname, serr()); |
---|
| 1393 | send_reply(info, 550, buf); |
---|
| 1394 | } |
---|
| 1395 | else |
---|
| 1396 | { |
---|
| 1397 | struct tm *t = gmtime(&stbuf.st_mtime); |
---|
| 1398 | snprintf(buf, FTPD_BUFSIZE, "%04d%02d%02d%02d%02d%02d", |
---|
| 1399 | 1900 + t->tm_year, |
---|
| 1400 | t->tm_mon+1, t->tm_mday, |
---|
| 1401 | t->tm_hour, t->tm_min, t->tm_sec); |
---|
| 1402 | send_reply(info, 213, buf); |
---|
| 1403 | } |
---|
[6d0e13c] | 1404 | } |
---|
| 1405 | |
---|
[38371dbe] | 1406 | /*PAGE |
---|
| 1407 | * |
---|
| 1408 | * command_port |
---|
| 1409 | * |
---|
| 1410 | * This procedure fills address for data connection given the IP address and |
---|
| 1411 | * port of the remote machine. |
---|
| 1412 | * |
---|
| 1413 | * Input parameters: |
---|
| 1414 | * info - corresponding SessionInfo structure |
---|
| 1415 | * args - arguments to the "PORT" command. |
---|
| 1416 | * |
---|
| 1417 | * Output parameters: |
---|
| 1418 | * info->data_addr is set according to arguments of the PORT command. |
---|
| 1419 | * info->use_default is set to 0 on success, 1 on failure. |
---|
| 1420 | */ |
---|
[6d0e13c] | 1421 | static void |
---|
[38371dbe] | 1422 | command_port(FTPD_SessionInfo_t *info, char const *args) |
---|
[6d0e13c] | 1423 | { |
---|
[38371dbe] | 1424 | enum { NUM_FIELDS = 6 }; |
---|
| 1425 | unsigned int a[NUM_FIELDS]; |
---|
| 1426 | int n; |
---|
| 1427 | |
---|
| 1428 | close_data_socket(info); |
---|
| 1429 | |
---|
| 1430 | n = sscanf(args, "%u,%u,%u,%u,%u,%u", a+0, a+1, a+2, a+3, a+4, a+5); |
---|
| 1431 | if(NUM_FIELDS == n) |
---|
| 1432 | { |
---|
| 1433 | int i; |
---|
| 1434 | unsigned8 b[NUM_FIELDS]; |
---|
| 1435 | |
---|
| 1436 | for(i = 0; i < NUM_FIELDS; ++i) |
---|
| 1437 | { |
---|
| 1438 | if(a[i] > 255) |
---|
| 1439 | break; |
---|
| 1440 | b[i] = (unsigned8)a[i]; |
---|
| 1441 | } |
---|
| 1442 | |
---|
| 1443 | if(i == NUM_FIELDS) |
---|
| 1444 | { |
---|
| 1445 | /* Note: while it contradicts with RFC959, we don't allow PORT command |
---|
| 1446 | * to specify IP address different than those of the originating client |
---|
| 1447 | * for the sake of safety. */ |
---|
| 1448 | unsigned32 const *ip = (unsigned32 *)b; |
---|
| 1449 | if(*ip == info->def_addr.sin_addr.s_addr) |
---|
| 1450 | { |
---|
| 1451 | info->data_addr.sin_addr.s_addr = *ip; |
---|
| 1452 | info->data_addr.sin_port = *(unsigned16 *)(b + 4); |
---|
| 1453 | info->data_addr.sin_family = AF_INET; |
---|
| 1454 | memset(info->data_addr.sin_zero, 0, sizeof(info->data_addr.sin_zero)); |
---|
| 1455 | |
---|
| 1456 | info->use_default = 0; |
---|
| 1457 | send_reply(info, 200, "PORT command successful."); |
---|
| 1458 | return; /* success */ |
---|
| 1459 | } |
---|
| 1460 | else |
---|
| 1461 | { |
---|
| 1462 | send_reply(info, 425, "Address doesn't match peer's IP."); |
---|
| 1463 | return; |
---|
| 1464 | } |
---|
| 1465 | } |
---|
| 1466 | } |
---|
| 1467 | send_reply(info, 501, "Syntax error."); |
---|
| 1468 | } |
---|
| 1469 | |
---|
| 1470 | |
---|
| 1471 | /*PAGE |
---|
| 1472 | * |
---|
| 1473 | * command_pasv |
---|
| 1474 | * |
---|
| 1475 | * Handle FTP PASV command. |
---|
| 1476 | * Open socket, listen for and accept connection on it. |
---|
| 1477 | * |
---|
| 1478 | * Input parameters: |
---|
| 1479 | * info - corresponding SessionInfo structure |
---|
| 1480 | * |
---|
| 1481 | * Output parameters: |
---|
| 1482 | * info->pasv_socket is set to the descriptor of the data socket |
---|
| 1483 | */ |
---|
| 1484 | static void |
---|
| 1485 | command_pasv(FTPD_SessionInfo_t *info) |
---|
| 1486 | { |
---|
| 1487 | int s = -1; |
---|
| 1488 | int err = 1; |
---|
| 1489 | |
---|
| 1490 | close_data_socket(info); |
---|
| 1491 | |
---|
| 1492 | s = socket(PF_INET, SOCK_STREAM, 0); |
---|
| 1493 | if (s < 0) |
---|
| 1494 | syslog(LOG_ERR, "ftpd: Error creating PASV socket: %s", serr()); |
---|
| 1495 | else |
---|
| 1496 | { |
---|
| 1497 | struct sockaddr_in addr; |
---|
| 1498 | int addrLen = sizeof(addr); |
---|
| 1499 | |
---|
| 1500 | addr = info->ctrl_addr; |
---|
| 1501 | addr.sin_port = htons(0); |
---|
| 1502 | |
---|
| 1503 | if (0 > bind(s, (struct sockaddr *)&addr, addrLen)) |
---|
| 1504 | syslog(LOG_ERR, "ftpd: Error binding PASV socket: %s", serr()); |
---|
| 1505 | else if (0 > listen(s, 1)) |
---|
| 1506 | syslog(LOG_ERR, "ftpd: Error listening on PASV socket: %s", serr()); |
---|
[07fbfced] | 1507 | else if(set_socket_timeout(s, info->idle)) |
---|
[38371dbe] | 1508 | { |
---|
| 1509 | char buf[FTPD_BUFSIZE]; |
---|
| 1510 | unsigned char const *ip, *p; |
---|
| 1511 | |
---|
| 1512 | getsockname(s, (struct sockaddr *)&addr, &addrLen); |
---|
| 1513 | ip = (unsigned char const*)&(addr.sin_addr); |
---|
| 1514 | p = (unsigned char const*)&(addr.sin_port); |
---|
| 1515 | snprintf(buf, FTPD_BUFSIZE, "Entering passive mode (%u,%u,%u,%u,%u,%u).", |
---|
| 1516 | ip[0], ip[1], ip[2], ip[3], p[0], p[1]); |
---|
| 1517 | send_reply(info, 227, buf); |
---|
| 1518 | |
---|
| 1519 | info->pasv_socket = accept(s, (struct sockaddr *)&addr, &addrLen); |
---|
| 1520 | if (0 > info->pasv_socket) |
---|
| 1521 | syslog(LOG_ERR, "ftpd: Error accepting PASV connection: %s", serr()); |
---|
| 1522 | else |
---|
[07fbfced] | 1523 | { |
---|
| 1524 | close_socket(s); |
---|
| 1525 | s = -1; |
---|
[38371dbe] | 1526 | err = 0; |
---|
[07fbfced] | 1527 | } |
---|
[38371dbe] | 1528 | } |
---|
| 1529 | } |
---|
| 1530 | if(err) |
---|
| 1531 | { |
---|
| 1532 | /* (OSV) The note is from FreeBSD FTPD. |
---|
| 1533 | * Note: a response of 425 is not mentioned as a possible response to |
---|
| 1534 | * the PASV command in RFC959. However, it has been blessed as a |
---|
| 1535 | * legitimate response by Jon Postel in a telephone conversation |
---|
| 1536 | * with Rick Adams on 25 Jan 89. */ |
---|
| 1537 | send_reply(info, 425, "Can't open passive connection."); |
---|
| 1538 | close_socket(s); |
---|
| 1539 | } |
---|
[6d0e13c] | 1540 | } |
---|
| 1541 | |
---|
| 1542 | |
---|
[3f777d0e] | 1543 | /*PAGE |
---|
| 1544 | * |
---|
| 1545 | * skip_options |
---|
| 1546 | * |
---|
| 1547 | * Utility routine to skip options (if any) from input command. |
---|
| 1548 | * |
---|
| 1549 | * Input parameters: |
---|
| 1550 | * p - pointer to pointer to command |
---|
| 1551 | * |
---|
| 1552 | * Output parameters: |
---|
| 1553 | * p - is changed to point to first non-option argument |
---|
| 1554 | */ |
---|
| 1555 | static void |
---|
| 1556 | skip_options(char **p) |
---|
| 1557 | { |
---|
| 1558 | char* buf = *p; |
---|
[38371dbe] | 1559 | char* last = NULL; |
---|
[3f777d0e] | 1560 | while(1) { |
---|
[38371dbe] | 1561 | while(isspace(*buf)) |
---|
[3f777d0e] | 1562 | ++buf; |
---|
| 1563 | if(*buf == '-') { |
---|
| 1564 | if(*++buf == '-') { /* `--' should terminate options */ |
---|
[38371dbe] | 1565 | if(isspace(*++buf)) { |
---|
| 1566 | last = buf; |
---|
| 1567 | do ++buf; |
---|
| 1568 | while(isspace(*buf)); |
---|
| 1569 | break; |
---|
| 1570 | } |
---|
[3f777d0e] | 1571 | } |
---|
[38371dbe] | 1572 | while(*buf && !isspace(*buf)) |
---|
[3f777d0e] | 1573 | ++buf; |
---|
[38371dbe] | 1574 | last = buf; |
---|
[3f777d0e] | 1575 | } |
---|
| 1576 | else |
---|
| 1577 | break; |
---|
| 1578 | } |
---|
[38371dbe] | 1579 | if(last) |
---|
| 1580 | *last = '\0'; |
---|
[3f777d0e] | 1581 | *p = buf; |
---|
| 1582 | } |
---|
| 1583 | |
---|
[38371dbe] | 1584 | /*PAGE |
---|
| 1585 | * |
---|
| 1586 | * split_command |
---|
| 1587 | * |
---|
| 1588 | * Split command into command itself, options, and arguments. Command itself |
---|
| 1589 | * is converted to upper case. |
---|
| 1590 | * |
---|
| 1591 | * Input parameters: |
---|
| 1592 | * buf - initial command string |
---|
| 1593 | * |
---|
| 1594 | * Output parameter: |
---|
| 1595 | * buf - is modified by inserting '\0' at ends of split entities |
---|
| 1596 | * cmd - upper-cased command code |
---|
| 1597 | * opts - string containing all the options |
---|
| 1598 | * args - string containing all the arguments |
---|
| 1599 | */ |
---|
| 1600 | void |
---|
| 1601 | split_command(char *buf, char **cmd, char **opts, char **args) |
---|
| 1602 | { |
---|
| 1603 | char* eoc; |
---|
| 1604 | char* p = buf; |
---|
| 1605 | while(isspace(*p)) |
---|
| 1606 | ++p; |
---|
| 1607 | *cmd = p; |
---|
| 1608 | while(*p && !isspace(*p)) |
---|
| 1609 | { |
---|
| 1610 | *p = toupper(*p); |
---|
| 1611 | ++p; |
---|
| 1612 | } |
---|
| 1613 | eoc = p; |
---|
| 1614 | if(*p) |
---|
| 1615 | *p++ = '\0'; |
---|
| 1616 | while(isspace(*p)) |
---|
| 1617 | ++p; |
---|
| 1618 | *opts = p; |
---|
| 1619 | skip_options(&p); |
---|
| 1620 | *args = p; |
---|
| 1621 | if(*opts == p) |
---|
| 1622 | *opts = eoc; |
---|
| 1623 | while(*p && *p != '\r' && *p != '\n') |
---|
| 1624 | ++p; |
---|
| 1625 | if(*p) |
---|
| 1626 | *p++ = '\0'; |
---|
| 1627 | } |
---|
| 1628 | |
---|
| 1629 | /*PAGE |
---|
| 1630 | * |
---|
| 1631 | * exec_command |
---|
| 1632 | * |
---|
| 1633 | * Parse and execute FTP command. |
---|
| 1634 | * |
---|
| 1635 | * FIXME: This section is somewhat of a hack. We should have a better |
---|
| 1636 | * way to parse commands. |
---|
| 1637 | * |
---|
| 1638 | * Input parameters: |
---|
| 1639 | * info - corresponding SessionInfo structure |
---|
| 1640 | * cmd - command to be executed (upper-case) |
---|
| 1641 | * args - arguments of the command |
---|
| 1642 | * |
---|
| 1643 | * Output parameters: |
---|
| 1644 | * NONE |
---|
| 1645 | */ |
---|
[6d0e13c] | 1646 | static void |
---|
[07fbfced] | 1647 | exec_command(FTPD_SessionInfo_t *info, char* cmd, char* args) |
---|
[6d0e13c] | 1648 | { |
---|
[3f777d0e] | 1649 | char fname[FTPD_BUFSIZE]; |
---|
[38371dbe] | 1650 | int wrong_command = 0; |
---|
[3f777d0e] | 1651 | |
---|
[07fbfced] | 1652 | fname[0] = '\0'; |
---|
| 1653 | |
---|
[38371dbe] | 1654 | if (!strcmp("PORT", cmd)) |
---|
[3f777d0e] | 1655 | { |
---|
[38371dbe] | 1656 | command_port(info, args); |
---|
[3f777d0e] | 1657 | } |
---|
[38371dbe] | 1658 | else if (!strcmp("PASV", cmd)) |
---|
[3f777d0e] | 1659 | { |
---|
[38371dbe] | 1660 | command_pasv(info); |
---|
| 1661 | } |
---|
| 1662 | else if (!strcmp("RETR", cmd)) |
---|
| 1663 | { |
---|
| 1664 | sscanf(args, "%254s", fname); |
---|
[3f777d0e] | 1665 | command_retrieve(info, fname); |
---|
| 1666 | } |
---|
[38371dbe] | 1667 | else if (!strcmp("STOR", cmd)) |
---|
[3f777d0e] | 1668 | { |
---|
[38371dbe] | 1669 | sscanf(args, "%254s", fname); |
---|
[3f777d0e] | 1670 | command_store(info, fname); |
---|
| 1671 | } |
---|
[38371dbe] | 1672 | else if (!strcmp("LIST", cmd)) |
---|
[3f777d0e] | 1673 | { |
---|
[38371dbe] | 1674 | sscanf(args, "%254s", fname); |
---|
[3f777d0e] | 1675 | command_list(info, fname, 1); |
---|
| 1676 | } |
---|
[38371dbe] | 1677 | else if (!strcmp("NLST", cmd)) |
---|
[3f777d0e] | 1678 | { |
---|
[38371dbe] | 1679 | sscanf(args, "%254s", fname); |
---|
[3f777d0e] | 1680 | command_list(info, fname, 0); |
---|
| 1681 | } |
---|
[38371dbe] | 1682 | else if (!strcmp("MDTM", cmd)) |
---|
[3f777d0e] | 1683 | { |
---|
[38371dbe] | 1684 | sscanf(args, "%254s", fname); |
---|
[3f777d0e] | 1685 | command_mdtm(info, fname); |
---|
| 1686 | } |
---|
[38371dbe] | 1687 | else if (!strcmp("SYST", cmd)) |
---|
[3f777d0e] | 1688 | { |
---|
[38371dbe] | 1689 | send_reply(info, 215, FTPD_SYSTYPE); |
---|
[3f777d0e] | 1690 | } |
---|
[38371dbe] | 1691 | else if (!strcmp("TYPE", cmd)) |
---|
[3f777d0e] | 1692 | { |
---|
[38371dbe] | 1693 | if (args[0] == 'I') |
---|
[3f777d0e] | 1694 | { |
---|
| 1695 | info->xfer_mode = TYPE_I; |
---|
| 1696 | send_reply(info, 200, "Type set to I."); |
---|
| 1697 | } |
---|
[38371dbe] | 1698 | else if (args[0] == 'A') |
---|
[3f777d0e] | 1699 | { |
---|
| 1700 | info->xfer_mode = TYPE_A; |
---|
| 1701 | send_reply(info, 200, "Type set to A."); |
---|
| 1702 | } |
---|
| 1703 | else |
---|
| 1704 | { |
---|
| 1705 | info->xfer_mode = TYPE_I; |
---|
| 1706 | send_reply(info, 504, "Type not implemented. Set to I."); |
---|
| 1707 | } |
---|
| 1708 | } |
---|
[38371dbe] | 1709 | else if (!strcmp("USER", cmd) || !strcmp("PASS", cmd)) |
---|
[3f777d0e] | 1710 | { |
---|
| 1711 | send_reply(info, 230, "User logged in."); |
---|
| 1712 | } |
---|
[38371dbe] | 1713 | else if (!strcmp("DELE", cmd)) |
---|
[3f777d0e] | 1714 | { |
---|
[38371dbe] | 1715 | if(!can_write()) |
---|
| 1716 | { |
---|
| 1717 | send_reply(info, 550, "Access denied."); |
---|
| 1718 | } |
---|
| 1719 | else if ( |
---|
| 1720 | 1 == sscanf(args, "%254s", fname) && |
---|
[07fbfced] | 1721 | unlink(fname) == 0) |
---|
[3f777d0e] | 1722 | { |
---|
| 1723 | send_reply(info, 257, "DELE successful."); |
---|
| 1724 | } |
---|
| 1725 | else |
---|
| 1726 | { |
---|
| 1727 | send_reply(info, 550, "DELE failed."); |
---|
| 1728 | } |
---|
| 1729 | } |
---|
[38371dbe] | 1730 | else if (!strcmp("SITE", cmd)) |
---|
[3f777d0e] | 1731 | { |
---|
[38371dbe] | 1732 | char* opts; |
---|
| 1733 | split_command(args, &cmd, &opts, &args); |
---|
| 1734 | if(!strcmp("CHMOD", cmd)) |
---|
[3f777d0e] | 1735 | { |
---|
[38371dbe] | 1736 | int mask; |
---|
| 1737 | |
---|
| 1738 | if(!can_write()) |
---|
| 1739 | { |
---|
| 1740 | send_reply(info, 550, "Access denied."); |
---|
| 1741 | } |
---|
| 1742 | else if( |
---|
| 1743 | 2 == sscanf(args, "%o %254s", &mask, fname) && |
---|
[07fbfced] | 1744 | chmod(fname, (mode_t)mask) == 0) |
---|
[38371dbe] | 1745 | { |
---|
| 1746 | send_reply(info, 257, "CHMOD successful."); |
---|
| 1747 | } |
---|
| 1748 | else |
---|
| 1749 | { |
---|
| 1750 | send_reply(info, 550, "CHMOD failed."); |
---|
| 1751 | } |
---|
[3f777d0e] | 1752 | } |
---|
| 1753 | else |
---|
[38371dbe] | 1754 | wrong_command = 1; |
---|
[3f777d0e] | 1755 | } |
---|
[38371dbe] | 1756 | else if (!strcmp("RMD", cmd)) |
---|
[3f777d0e] | 1757 | { |
---|
[38371dbe] | 1758 | if(!can_write()) |
---|
| 1759 | { |
---|
| 1760 | send_reply(info, 550, "Access denied."); |
---|
| 1761 | } |
---|
| 1762 | else if ( |
---|
| 1763 | 1 == sscanf(args, "%254s", fname) && |
---|
[07fbfced] | 1764 | rmdir(fname) == 0) |
---|
[3f777d0e] | 1765 | { |
---|
| 1766 | send_reply(info, 257, "RMD successful."); |
---|
| 1767 | } |
---|
| 1768 | else |
---|
| 1769 | { |
---|
| 1770 | send_reply(info, 550, "RMD failed."); |
---|
| 1771 | } |
---|
| 1772 | } |
---|
[38371dbe] | 1773 | else if (!strcmp("MKD", cmd)) |
---|
[3f777d0e] | 1774 | { |
---|
[38371dbe] | 1775 | if(!can_write()) |
---|
| 1776 | { |
---|
| 1777 | send_reply(info, 550, "Access denied."); |
---|
| 1778 | } |
---|
| 1779 | else if ( |
---|
| 1780 | 1 == sscanf(args, "%254s", fname) && |
---|
[07fbfced] | 1781 | mkdir(fname, S_IRWXU | S_IRWXG | S_IRWXO) == 0) |
---|
[3f777d0e] | 1782 | { |
---|
| 1783 | send_reply(info, 257, "MKD successful."); |
---|
| 1784 | } |
---|
| 1785 | else |
---|
| 1786 | { |
---|
| 1787 | send_reply(info, 550, "MKD failed."); |
---|
| 1788 | } |
---|
| 1789 | } |
---|
[38371dbe] | 1790 | else if (!strcmp("CWD", cmd)) |
---|
[3f777d0e] | 1791 | { |
---|
[38371dbe] | 1792 | sscanf(args, "%254s", fname); |
---|
[07fbfced] | 1793 | command_cwd(info, fname); |
---|
[3f777d0e] | 1794 | } |
---|
[38371dbe] | 1795 | else if (!strcmp("CDUP", cmd)) |
---|
[3f777d0e] | 1796 | { |
---|
[07fbfced] | 1797 | command_cwd(info, ".."); |
---|
[3f777d0e] | 1798 | } |
---|
[38371dbe] | 1799 | else if (!strcmp("PWD", cmd)) |
---|
[3f777d0e] | 1800 | { |
---|
[07fbfced] | 1801 | command_pwd(info); |
---|
[3f777d0e] | 1802 | } |
---|
| 1803 | else |
---|
[38371dbe] | 1804 | wrong_command = 1; |
---|
| 1805 | |
---|
| 1806 | if(wrong_command) |
---|
| 1807 | send_reply(info, 500, "Command not understood."); |
---|
[6d0e13c] | 1808 | } |
---|
| 1809 | |
---|
[85e24a3] | 1810 | |
---|
[38371dbe] | 1811 | /*PAGE |
---|
| 1812 | * |
---|
| 1813 | * session |
---|
| 1814 | * |
---|
| 1815 | * This task handles single session. It is waked up when the FTP daemon gets a |
---|
| 1816 | * service request from a remote machine. Here, we watch for commands that |
---|
| 1817 | * will come through the control connection. These commands are then parsed |
---|
| 1818 | * and executed until the connection is closed, either unintentionally or |
---|
| 1819 | * intentionally with the "QUIT" command. |
---|
| 1820 | * |
---|
| 1821 | * Input parameters: |
---|
| 1822 | * arg - pointer to corresponding SessionInfo. |
---|
| 1823 | * |
---|
| 1824 | * Output parameters: |
---|
| 1825 | * NONE |
---|
| 1826 | */ |
---|
[6d0e13c] | 1827 | static void |
---|
[3f777d0e] | 1828 | session(rtems_task_argument arg) |
---|
[6d0e13c] | 1829 | { |
---|
[38371dbe] | 1830 | FTPD_SessionInfo_t *const info = (FTPD_SessionInfo_t *)arg; |
---|
[07fbfced] | 1831 | int chroot_made = 0; |
---|
| 1832 | |
---|
| 1833 | rtems_libio_set_private_env(); |
---|
| 1834 | |
---|
| 1835 | /* chroot() can fail here because the directory may not exist yet. */ |
---|
| 1836 | chroot_made = chroot(ftpd_root) == 0; |
---|
[38371dbe] | 1837 | |
---|
| 1838 | while(1) |
---|
| 1839 | { |
---|
| 1840 | rtems_event_set set; |
---|
[6d0e13c] | 1841 | |
---|
[3f777d0e] | 1842 | rtems_event_receive(FTPD_RTEMS_EVENT, RTEMS_EVENT_ANY, RTEMS_NO_TIMEOUT, |
---|
| 1843 | &set); |
---|
[6d0e13c] | 1844 | |
---|
[07fbfced] | 1845 | chroot_made = chroot_made || chroot(ftpd_root) == 0; |
---|
| 1846 | chdir("/"); |
---|
| 1847 | |
---|
| 1848 | errno = 0; |
---|
| 1849 | |
---|
[3f777d0e] | 1850 | send_reply(info, 220, FTPD_SERVER_MESSAGE); |
---|
[6d0e13c] | 1851 | |
---|
[3f777d0e] | 1852 | while (1) |
---|
| 1853 | { |
---|
[38371dbe] | 1854 | char buf[FTPD_BUFSIZE]; |
---|
| 1855 | char *cmd, *opts, *args; |
---|
| 1856 | |
---|
| 1857 | if (fgets(buf, FTPD_BUFSIZE, info->ctrl_fp) == NULL) |
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[6d0e13c] | 1858 | { |
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[3f777d0e] | 1859 | syslog(LOG_INFO, "ftpd: Connection aborted."); |
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| 1860 | break; |
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[6d0e13c] | 1861 | } |
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| 1862 | |
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[38371dbe] | 1863 | split_command(buf, &cmd, &opts, &args); |
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| 1864 | |
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| 1865 | if (!strcmp("QUIT", cmd)) |
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[6d0e13c] | 1866 | { |
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[3f777d0e] | 1867 | send_reply(info, 221, "Goodbye."); |
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| 1868 | break; |
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[6d0e13c] | 1869 | } |
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| 1870 | else |
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| 1871 | { |
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[07fbfced] | 1872 | exec_command(info, cmd, args); |
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[6d0e13c] | 1873 | } |
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[3f777d0e] | 1874 | } |
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[6d0e13c] | 1875 | |
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[3f777d0e] | 1876 | /* Close connection and put ourselves back into the task pool. */ |
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[38371dbe] | 1877 | close_data_socket(info); |
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[3f777d0e] | 1878 | close_stream(info); |
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| 1879 | task_pool_release(info); |
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| 1880 | } |
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[6d0e13c] | 1881 | } |
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| 1882 | |
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| 1883 | |
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[38371dbe] | 1884 | /*PAGE |
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| 1885 | * |
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| 1886 | * daemon |
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| 1887 | * |
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| 1888 | * This task runs forever. It waits for service requests on the FTP port |
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| 1889 | * (port 21 by default). When a request is received, it opens a new session |
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| 1890 | * to handle those requests until the connection is closed. |
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| 1891 | * |
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| 1892 | * Input parameters: |
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| 1893 | * NONE |
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| 1894 | * |
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| 1895 | * Output parameters: |
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| 1896 | * NONE |
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| 1897 | */ |
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[6d0e13c] | 1898 | static void |
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[3f777d0e] | 1899 | daemon() |
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[6d0e13c] | 1900 | { |
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[3f777d0e] | 1901 | int s; |
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| 1902 | int addrLen; |
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[38371dbe] | 1903 | struct sockaddr_in addr; |
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[3f777d0e] | 1904 | FTPD_SessionInfo_t *info = NULL; |
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| 1905 | |
---|
| 1906 | |
---|
| 1907 | s = socket(PF_INET, SOCK_STREAM, 0); |
---|
| 1908 | if (s < 0) |
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| 1909 | syslog(LOG_ERR, "ftpd: Error creating socket: %s", serr()); |
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| 1910 | |
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[38371dbe] | 1911 | addr.sin_family = AF_INET; |
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| 1912 | addr.sin_port = htons(rtems_ftpd_configuration.port); |
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| 1913 | addr.sin_addr.s_addr = htonl(INADDR_ANY); |
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| 1914 | memset(addr.sin_zero, 0, sizeof(addr.sin_zero)); |
---|
[3f777d0e] | 1915 | |
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[38371dbe] | 1916 | if (0 > bind(s, (struct sockaddr *)&addr, sizeof(addr))) |
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[3f777d0e] | 1917 | syslog(LOG_ERR, "ftpd: Error binding control socket: %s", serr()); |
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[38371dbe] | 1918 | else if (0 > listen(s, 1)) |
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[3f777d0e] | 1919 | syslog(LOG_ERR, "ftpd: Error listening on control socket: %s", serr()); |
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[38371dbe] | 1920 | else while (1) |
---|
[3f777d0e] | 1921 | { |
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| 1922 | int ss; |
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[38371dbe] | 1923 | addrLen = sizeof(addr); |
---|
| 1924 | ss = accept(s, (struct sockaddr *)&addr, &addrLen); |
---|
[3f777d0e] | 1925 | if (0 > ss) |
---|
| 1926 | syslog(LOG_ERR, "ftpd: Error accepting control connection: %s", serr()); |
---|
[38371dbe] | 1927 | else if(!set_socket_timeout(ss, ftpd_timeout)) |
---|
| 1928 | close_socket(ss); |
---|
[3f777d0e] | 1929 | else |
---|
| 1930 | { |
---|
| 1931 | info = task_pool_obtain(); |
---|
| 1932 | if (NULL == info) |
---|
[6d0e13c] | 1933 | { |
---|
[3f777d0e] | 1934 | close_socket(ss); |
---|
[6d0e13c] | 1935 | } |
---|
| 1936 | else |
---|
| 1937 | { |
---|
[38371dbe] | 1938 | info->ctrl_socket = ss; |
---|
| 1939 | if ((info->ctrl_fp = fdopen(info->ctrl_socket, "r+")) == NULL) |
---|
[3f777d0e] | 1940 | { |
---|
| 1941 | syslog(LOG_ERR, "ftpd: fdopen() on socket failed: %s", serr()); |
---|
| 1942 | close_stream(info); |
---|
| 1943 | task_pool_release(info); |
---|
| 1944 | } |
---|
| 1945 | else |
---|
| 1946 | { |
---|
[38371dbe] | 1947 | /* Initialize corresponding SessionInfo structure */ |
---|
| 1948 | info->def_addr = addr; |
---|
| 1949 | if(0 > getsockname(ss, (struct sockaddr *)&addr, &addrLen)) |
---|
| 1950 | { |
---|
| 1951 | syslog(LOG_ERR, "ftpd: getsockname(): %s", serr()); |
---|
| 1952 | close_stream(info); |
---|
| 1953 | task_pool_release(info); |
---|
| 1954 | } |
---|
| 1955 | else |
---|
| 1956 | { |
---|
| 1957 | info->use_default = 1; |
---|
| 1958 | info->ctrl_addr = addr; |
---|
| 1959 | info->pasv_socket = -1; |
---|
[07fbfced] | 1960 | info->data_socket = -1; |
---|
| 1961 | info->xfer_mode = TYPE_A; |
---|
[38371dbe] | 1962 | info->data_addr.sin_port = |
---|
| 1963 | htons(ntohs(info->ctrl_addr.sin_port) - 1); |
---|
| 1964 | info->idle = ftpd_timeout; |
---|
| 1965 | /* Wakeup the session task. The task will call task_pool_release |
---|
| 1966 | after it closes connection. */ |
---|
| 1967 | rtems_event_send(info->tid, FTPD_RTEMS_EVENT); |
---|
| 1968 | } |
---|
[3f777d0e] | 1969 | } |
---|
[85e24a3] | 1970 | } |
---|
[3f777d0e] | 1971 | } |
---|
| 1972 | } |
---|
[38371dbe] | 1973 | rtems_task_delete(RTEMS_SELF); |
---|
[6d0e13c] | 1974 | } |
---|
| 1975 | |
---|
| 1976 | |
---|
[38371dbe] | 1977 | /*PAGE |
---|
| 1978 | * |
---|
| 1979 | * rtems_ftpd_start |
---|
| 1980 | * |
---|
| 1981 | * Here, we start the FTPD task which waits for FTP requests and services |
---|
| 1982 | * them. This procedure returns to its caller once the task is started. |
---|
| 1983 | * |
---|
| 1984 | * |
---|
| 1985 | * Input parameters: |
---|
| 1986 | * |
---|
| 1987 | * Output parameters: |
---|
| 1988 | * returns RTEMS_SUCCESSFUL on successful start of the daemon. |
---|
| 1989 | */ |
---|
[85e24a3] | 1990 | int |
---|
| 1991 | rtems_initialize_ftpd() |
---|
[6d0e13c] | 1992 | { |
---|
[3f777d0e] | 1993 | rtems_status_code sc; |
---|
| 1994 | rtems_id tid; |
---|
| 1995 | rtems_task_priority priority; |
---|
| 1996 | int count; |
---|
| 1997 | |
---|
| 1998 | if (rtems_ftpd_configuration.port == 0) |
---|
| 1999 | { |
---|
| 2000 | rtems_ftpd_configuration.port = FTPD_CONTROL_PORT; |
---|
| 2001 | } |
---|
| 2002 | |
---|
| 2003 | if (rtems_ftpd_configuration.priority == 0) |
---|
| 2004 | { |
---|
| 2005 | rtems_ftpd_configuration.priority = 40; |
---|
| 2006 | } |
---|
| 2007 | priority = rtems_ftpd_configuration.priority; |
---|
| 2008 | |
---|
[38371dbe] | 2009 | ftpd_timeout = rtems_ftpd_configuration.idle; |
---|
| 2010 | if (ftpd_timeout < 0) |
---|
| 2011 | ftpd_timeout = 0; |
---|
| 2012 | rtems_ftpd_configuration.idle = ftpd_timeout; |
---|
| 2013 | |
---|
| 2014 | ftpd_access = rtems_ftpd_configuration.access; |
---|
| 2015 | |
---|
[3f777d0e] | 2016 | if (rtems_ftpd_configuration.tasks_count <= 0) |
---|
| 2017 | rtems_ftpd_configuration.tasks_count = 1; |
---|
| 2018 | count = rtems_ftpd_configuration.tasks_count; |
---|
| 2019 | |
---|
| 2020 | if (!task_pool_init(count, priority)) |
---|
| 2021 | { |
---|
| 2022 | syslog(LOG_ERR, "ftpd: Could not initialize task pool."); |
---|
| 2023 | return RTEMS_UNSATISFIED; |
---|
| 2024 | } |
---|
| 2025 | |
---|
| 2026 | sc = rtems_task_create(rtems_build_name('F', 'T', 'P', 'D'), |
---|
| 2027 | priority, FTPD_STACKSIZE, |
---|
| 2028 | RTEMS_PREEMPT | RTEMS_NO_TIMESLICE | RTEMS_NO_ASR | |
---|
| 2029 | RTEMS_INTERRUPT_LEVEL(0), |
---|
| 2030 | RTEMS_NO_FLOATING_POINT | RTEMS_LOCAL, |
---|
| 2031 | &tid); |
---|
| 2032 | |
---|
| 2033 | if (sc == RTEMS_SUCCESSFUL) |
---|
| 2034 | { |
---|
| 2035 | sc = rtems_task_start(tid, daemon, 0); |
---|
| 2036 | if (sc != RTEMS_SUCCESSFUL) |
---|
| 2037 | rtems_task_delete(tid); |
---|
| 2038 | } |
---|
| 2039 | |
---|
| 2040 | if (sc != RTEMS_SUCCESSFUL) |
---|
| 2041 | { |
---|
| 2042 | task_pool_done(count); |
---|
| 2043 | syslog(LOG_ERR, "ftpd: Could not create/start FTP daemon: %s", |
---|
| 2044 | rtems_status_text(sc)); |
---|
| 2045 | return RTEMS_UNSATISFIED; |
---|
| 2046 | } |
---|
| 2047 | |
---|
[07fbfced] | 2048 | ftpd_root = "/"; |
---|
[3f777d0e] | 2049 | if ( |
---|
| 2050 | rtems_ftpd_configuration.root && |
---|
[07fbfced] | 2051 | rtems_ftpd_configuration.root[0] == '/' |
---|
| 2052 | ) |
---|
| 2053 | ftpd_root = rtems_ftpd_configuration.root; |
---|
| 2054 | |
---|
| 2055 | rtems_ftpd_configuration.root = ftpd_root; |
---|
[3f777d0e] | 2056 | |
---|
| 2057 | syslog(LOG_INFO, "ftpd: FTP daemon started (%d session%s max)", |
---|
| 2058 | count, ((count > 1) ? "s" : "")); |
---|
[07fbfced] | 2059 | |
---|
[3f777d0e] | 2060 | return RTEMS_SUCCESSFUL; |
---|
[6d0e13c] | 2061 | } |
---|