1 | /* |
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2 | * File Transfer Protocol client |
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3 | * |
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4 | * Transfer file to/from remote host |
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5 | * |
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6 | * This driver can be added to the RTEMS file system with a call to |
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7 | * "rtems_bsdnet_initialize_ftp_filesystem () ". |
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8 | * From then on, you can open, read and close files on a remote FTP server |
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9 | * using the following syntax: |
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10 | * To open a file "myfile.txt" in the directory "mydir" (relative to home |
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11 | * directory) on a server named "myserver" using the user id |
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12 | * "myuserid" and the password "my_very_secret_password" you must |
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13 | * specify the following path: |
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14 | * |
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15 | * /FTP/myuserid:my_very_secret_password/@myserver/mydirectory/myfile.txt |
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16 | * |
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17 | * If the server is the default server specified in BOOTP, it can be ommitted: |
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18 | * |
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19 | * /FTP/myuserid:my_very_secret_password/mydirectory/myfile.txt |
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20 | * |
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21 | * WARNING: write accesses have not yet been tested. |
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22 | * |
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23 | * |
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24 | * (c) Copyright 2002 |
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25 | * Thomas Doerfler |
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26 | * IMD Ingenieurbuero fuer Microcomputertechnik |
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27 | * Herbststr. 8 |
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28 | * 82178 Puchheim, Germany |
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29 | * <Thomas.Doerfler@imd-systems.de> |
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30 | * |
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31 | * This code has been created after closly inspecting |
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32 | * "tftpdriver.c" from Eric Norum. |
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33 | * |
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34 | * $Id$ |
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35 | */ |
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36 | |
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37 | #include <stdio.h> |
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38 | #include <errno.h> |
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39 | #include <malloc.h> |
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40 | #include <string.h> |
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41 | #include <stdlib.h> |
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42 | #include <fcntl.h> |
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43 | #include <unistd.h> |
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44 | #include <inttypes.h> |
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45 | #include <ctype.h> |
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46 | #include <rtems.h> |
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47 | #include <rtems/libio.h> |
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48 | #include <rtems/rtems_bsdnet.h> |
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49 | #include <sys/types.h> |
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50 | #include <sys/socket.h> |
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51 | #include <netinet/in.h> |
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52 | #include <arpa/inet.h> |
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53 | #include <netdb.h> |
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54 | #include <rtems/ftpfs.h> |
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55 | |
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56 | |
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57 | #ifndef set_errno_and_return_minus_one |
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58 | #define set_errno_and_return_minus_one( _error ) \ |
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59 | do { errno = (_error); return -1; } while(0) |
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60 | #endif |
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61 | |
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62 | /* #define DEBUG_OUT */ |
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63 | |
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64 | /* |
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65 | * Well-known port for FTP |
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66 | */ |
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67 | #define FTP_PORT_NUM 21 |
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68 | |
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69 | /* |
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70 | * Pathname prefix |
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71 | */ |
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72 | #define FTP_PATHNAME_PREFIX "/FTP/" |
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73 | /* |
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74 | * reply codes |
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75 | */ |
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76 | #define FTP_REPLY_CONNECT 220 /* Connection established */ |
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77 | #define FTP_REPLY_PASSREQ 331 /* user ok, password required */ |
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78 | #define FTP_REPLY_LOGIN 230 /* login finished */ |
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79 | #define FTP_REPLY_SUCCESS 200 /* xxx successful */ |
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80 | #define FTP_REPLY_OPENCONN 150 /* opening connection for tfer */ |
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81 | #define FTP_REPLY_TFERCMPL 226 /* transfer complete */ |
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82 | |
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83 | extern rtems_filesystem_operations_table rtems_ftp_ops; |
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84 | extern rtems_filesystem_file_handlers_r rtems_ftp_handlers; |
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85 | |
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86 | /* |
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87 | * FTP command strings |
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88 | */ |
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89 | #define FTP_USER_CMD "USER " |
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90 | #define FTP_PASS_CMD "PASS " |
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91 | #define FTP_BINARY_CMD "TYPE I" |
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92 | #define FTP_PORT_CMD "PORT " |
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93 | #define FTP_STOR_CMD "STOR " |
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94 | #define FTP_RETR_CMD "RETR " |
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95 | #define FTP_QUIT_CMD "QUIT" |
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96 | |
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97 | /* |
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98 | * State of each FTP stream |
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99 | */ |
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100 | struct ftpStream { |
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101 | /* |
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102 | * Control connection socket |
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103 | */ |
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104 | int ctrl_socket; |
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105 | struct sockaddr_in myCtrlAddress; |
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106 | struct sockaddr_in farCtrlAddress; |
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107 | /* |
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108 | * Data transfer socket |
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109 | */ |
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110 | int port_socket; |
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111 | int data_socket; |
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112 | struct sockaddr_in myDataAddress; |
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113 | struct sockaddr_in farDataAddress; |
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114 | /* |
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115 | * other stuff to remember |
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116 | */ |
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117 | boolean eof_reached; |
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118 | }; |
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119 | |
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120 | /* |
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121 | * Number of streams open at the same time |
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122 | */ |
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123 | static rtems_id ftp_mutex; |
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124 | static int nStreams; |
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125 | static struct ftpStream ** volatile ftpStreams; |
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126 | |
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127 | extern rtems_filesystem_operations_table rtems_tftp_ops; |
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128 | extern rtems_filesystem_file_handlers_r rtems_tftp_handlers; |
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129 | |
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130 | /* |
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131 | * Direct copy from the IMFS/TFTP. Look at this. |
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132 | */ |
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133 | |
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134 | rtems_filesystem_limits_and_options_t rtems_ftp_limits_and_options = { |
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135 | 5, /* link_max */ |
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136 | 6, /* max_canon */ |
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137 | 7, /* max_input */ |
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138 | 255, /* name_max */ |
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139 | 255, /* path_max */ |
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140 | 2, /* pipe_buf */ |
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141 | 1, /* posix_async_io */ |
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142 | 2, /* posix_chown_restrictions */ |
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143 | 3, /* posix_no_trunc */ |
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144 | 4, /* posix_prio_io */ |
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145 | 5, /* posix_sync_io */ |
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146 | 6 /* posix_vdisable */ |
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147 | }; |
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148 | |
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149 | int rtems_ftp_mount_me( |
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150 | rtems_filesystem_mount_table_entry_t *temp_mt_entry |
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151 | ) |
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152 | { |
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153 | rtems_status_code sc; |
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154 | |
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155 | temp_mt_entry->mt_fs_root.handlers = &rtems_ftp_handlers; |
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156 | temp_mt_entry->mt_fs_root.ops = &rtems_ftp_ops; |
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157 | |
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158 | /* |
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159 | * We have no ftp filesystem specific data to maintain. This |
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160 | * filesystem may only be mounted ONCE. |
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161 | * |
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162 | * And we maintain no real filesystem nodes, so there is no real root. |
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163 | */ |
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164 | |
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165 | temp_mt_entry->fs_info = NULL; |
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166 | temp_mt_entry->mt_fs_root.node_access = NULL; |
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167 | |
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168 | /* |
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169 | * These need to be looked at for full POSIX semantics. |
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170 | */ |
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171 | |
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172 | temp_mt_entry->pathconf_limits_and_options = rtems_ftp_limits_and_options; |
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173 | |
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174 | |
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175 | /* |
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176 | * Now allocate a semaphore for mutual exclusion. |
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177 | * |
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178 | * NOTE: This could be in an fsinfo for this filesystem type. |
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179 | */ |
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180 | |
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181 | sc = rtems_semaphore_create (rtems_build_name('F','T','P',' '), |
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182 | 1, |
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183 | RTEMS_FIFO | |
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184 | RTEMS_BINARY_SEMAPHORE | |
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185 | RTEMS_NO_INHERIT_PRIORITY | |
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186 | RTEMS_NO_PRIORITY_CEILING | |
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187 | RTEMS_LOCAL, |
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188 | 0, |
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189 | &ftp_mutex); |
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190 | |
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191 | if (sc != RTEMS_SUCCESSFUL) |
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192 | set_errno_and_return_minus_one( ENOMEM ); |
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193 | |
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194 | return 0; |
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195 | } |
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196 | |
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197 | /* |
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198 | * Initialize the FTP driver |
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199 | */ |
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200 | |
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201 | int rtems_bsdnet_initialize_ftp_filesystem () |
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202 | { |
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203 | int status; |
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204 | rtems_filesystem_mount_table_entry_t *entry; |
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205 | |
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206 | status = mkdir( FTP_PATHNAME_PREFIX, S_IRWXU | S_IRWXG | S_IRWXO ); |
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207 | if ( status == -1 ) |
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208 | return status; |
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209 | |
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210 | status = mount( |
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211 | &entry, |
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212 | &rtems_ftp_ops, |
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213 | RTEMS_FILESYSTEM_READ_ONLY, |
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214 | NULL, |
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215 | FTP_PATHNAME_PREFIX |
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216 | ); |
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217 | |
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218 | if ( status ) |
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219 | perror( "FTP mount failed" ); |
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220 | |
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221 | return status; |
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222 | } |
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223 | |
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224 | /* |
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225 | * read and return message code from ftp control connection |
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226 | */ |
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227 | int rtems_ftp_get_message |
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228 | ( |
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229 | const struct ftpStream *fsp, /* ptr to ftp control structure */ |
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230 | int *msg_code /* ptr to return message code */ |
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231 | ) |
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232 | { |
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233 | char rd_buffer[4]; |
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234 | size_t rd_size; |
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235 | size_t tmp_size; |
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236 | int eno = 0; |
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237 | rtems_boolean finished = FALSE; |
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238 | do { |
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239 | /* |
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240 | * fetch (at least) 4 characters from control connection |
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241 | * FIXME: how about a timeout? |
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242 | */ |
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243 | rd_size = 0; |
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244 | while ((eno == 0) && |
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245 | (rd_size < sizeof(rd_buffer))) { |
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246 | tmp_size = read(fsp->ctrl_socket, |
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247 | (&rd_buffer)+rd_size, |
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248 | sizeof(rd_buffer)-rd_size); |
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249 | if (tmp_size < 0) { |
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250 | eno = EIO; |
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251 | } |
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252 | else { |
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253 | #ifdef DEBUG_OUT |
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254 | write(1,(&rd_buffer)+rd_size,tmp_size); |
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255 | #endif |
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256 | rd_size += tmp_size; |
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257 | } |
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258 | } |
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259 | /* |
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260 | * check for 3 digits and space, otherwise not finished |
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261 | */ |
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262 | if ((eno == 0) && |
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263 | (isdigit((unsigned int)rd_buffer[0])) && |
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264 | (isdigit((unsigned int)rd_buffer[1])) && |
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265 | (isdigit((unsigned int)rd_buffer[2])) && |
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266 | (rd_buffer[3] == ' ')) { |
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267 | finished = TRUE; |
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268 | rd_buffer[3] = '\0'; |
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269 | *msg_code = atol(rd_buffer); |
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270 | } |
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271 | /* |
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272 | * skip rest until end-of-line |
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273 | */ |
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274 | do { |
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275 | tmp_size = read(fsp->ctrl_socket, |
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276 | &rd_buffer, |
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277 | 1); |
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278 | if (tmp_size < 0) { |
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279 | eno = EIO; |
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280 | } |
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281 | #ifdef DEBUG_OUT |
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282 | else { |
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283 | write(1,(&rd_buffer),tmp_size); |
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284 | } |
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285 | #endif |
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286 | } while ((eno == 0) && |
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287 | (rd_buffer[0] != '\n')); |
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288 | } while ((eno == 0) && !finished); |
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289 | return eno; |
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290 | } |
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291 | |
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292 | /* |
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293 | * split a pseudo file name into host, user, password, filename |
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294 | * NOTE: this function will allocate space for these strings, |
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295 | * the calling function should free the space, when no longer needed |
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296 | * exception: when we return any error, we will also cleanup |
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297 | * the strings |
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298 | * valid forms: |
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299 | * /FTP/user:pass/filepath |
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300 | * /FTP/user:pass@hostname/filepath |
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301 | |
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302 | * /FTP/user:pass/filepath |
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303 | * /FTP/user:pass/@hostname/filepath |
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304 | * NOTE: /FTP is already stripped from the name |
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305 | */ |
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306 | int rtems_ftp_split_names |
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307 | ( const char *pathname, /* total path name (including prefix) */ |
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308 | char **usernamep, /* ptr to ptr to user name */ |
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309 | char **passwordp, /* ptr to ptr to password */ |
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310 | char **hostnamep, /* ptr to ptr to host name */ |
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311 | char **filenamep) /* ptr to ptr to hostremaining file name */ |
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312 | { |
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313 | const char *chunk_start; |
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314 | const char *chunk_end; |
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315 | size_t chunk_len; |
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316 | int rc = 0; |
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317 | |
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318 | /* |
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319 | * ensure, that result pointers are NULL... |
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320 | */ |
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321 | *usernamep = NULL; |
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322 | *passwordp = NULL; |
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323 | *hostnamep = NULL; |
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324 | *filenamep = NULL; |
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325 | |
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326 | #if 1 |
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327 | chunk_start = pathname; |
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328 | #else /* no longer needed with IMFS */ |
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329 | /* |
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330 | * check, that total path is long enough, skip prefix |
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331 | */ |
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332 | if (rc == 0) { |
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333 | if (strlen (pathname) <= strlen (FTP_PATHNAME_PREFIX)) { |
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334 | rc = ENOENT; |
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335 | } |
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336 | else { |
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337 | chunk_start = pathname + strlen (FTP_PATHNAME_PREFIX); |
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338 | } |
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339 | } |
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340 | #endif |
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341 | /* |
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342 | * fetch user name: terminated with ":" |
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343 | */ |
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344 | if (rc == 0) { |
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345 | chunk_end = strchr(chunk_start,':'); |
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346 | if ((chunk_end == NULL) || /* No ':' found or */ |
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347 | (chunk_end == chunk_start)) { /* ':' is first character-> no name */ |
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348 | rc = ENOENT; |
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349 | } |
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350 | else { |
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351 | chunk_len = chunk_end-chunk_start; |
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352 | *usernamep = malloc(chunk_len+1); |
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353 | if (*usernamep == NULL) { |
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354 | rc = ENOMEM; |
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355 | } |
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356 | else { |
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357 | memcpy(*usernamep,chunk_start,chunk_len); |
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358 | (*usernamep)[chunk_len] = '\0'; |
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359 | } |
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360 | } |
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361 | } |
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362 | /* |
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363 | * fetch password: terminated with "/" or "@" |
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364 | */ |
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365 | if (rc == 0) { |
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366 | chunk_start = chunk_end + 1; /* skip ":" after user name */ |
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367 | chunk_end = strchr(chunk_start,'/'); |
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368 | if ((chunk_end == NULL) || /* No '/' found or */ |
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369 | (chunk_end == chunk_start)) { /* '/' is first character-> no pwd */ |
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370 | rc = ENOENT; |
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371 | } |
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372 | else { |
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373 | /* |
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374 | * we have found a proper '/' |
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375 | * this is the end of the password |
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376 | */ |
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377 | chunk_len = chunk_end-chunk_start; |
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378 | *passwordp = malloc(chunk_len+1); |
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379 | if (*passwordp == NULL) { |
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380 | rc = ENOMEM; |
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381 | } |
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382 | else { |
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383 | memcpy(*passwordp,chunk_start,chunk_len); |
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384 | (*passwordp)[chunk_len] = '\0'; |
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385 | } |
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386 | } |
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387 | } |
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388 | /* |
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389 | * if first char after '/' is '@', then this is the hostname |
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390 | * fetch hostname terminated with "/" |
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391 | * if exists at all. otherwise take default server from bootp |
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392 | */ |
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393 | if (rc == 0) { |
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394 | chunk_start = chunk_end+1; |
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395 | if (*chunk_start == '@') { |
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396 | /* |
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397 | * hostname follows |
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398 | */ |
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399 | chunk_start = chunk_start + 1; /* skip "@" after password */ |
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400 | chunk_end = strchr(chunk_start,'/'); |
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401 | if ((chunk_end == NULL) || /* No '/' found or */ |
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402 | (chunk_end == chunk_start)) { /* '/' is first character-> no host */ |
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403 | rc = ENOENT; |
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404 | } |
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405 | else { |
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406 | /* |
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407 | * we have found a proper '/' |
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408 | */ |
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409 | chunk_len = chunk_end-chunk_start; |
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410 | *hostnamep = malloc(chunk_len+1); |
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411 | if (*hostnamep == NULL) { |
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412 | rc = ENOMEM; |
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413 | } |
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414 | else { |
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415 | memcpy(*hostnamep,chunk_start,chunk_len); |
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416 | (*hostnamep)[chunk_len] = '\0'; |
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417 | } |
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418 | } |
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419 | } |
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420 | else { /* chunk_start != '@' */ |
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421 | /* |
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422 | * no host name given, keep string empty |
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423 | */ |
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424 | *hostnamep = malloc(1); |
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425 | if (*hostnamep == NULL) { |
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426 | rc = ENOMEM; |
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427 | } |
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428 | else { |
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429 | (*hostnamep)[0] = '\0'; |
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430 | } |
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431 | } |
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432 | } |
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433 | /* |
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434 | * fetch filename. This is all the rest... |
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435 | */ |
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436 | if (rc == 0) { |
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437 | chunk_start = chunk_end+1; |
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438 | if (*chunk_start == '\0') { /* nothing left for filename */ |
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439 | rc = ENOENT; |
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440 | } |
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441 | else { |
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442 | chunk_len = strlen(chunk_start); |
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443 | *filenamep = malloc(chunk_len+1); |
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444 | if (*filenamep == NULL) { |
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445 | rc = ENOMEM; |
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446 | } |
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447 | else { |
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448 | memcpy(*filenamep,chunk_start,chunk_len); |
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449 | (*filenamep)[chunk_len] = '\0'; |
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450 | } |
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451 | } |
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452 | } |
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453 | |
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454 | /* |
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455 | * cleanup anything, if error occured |
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456 | */ |
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457 | if (rc != 0) { |
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458 | if (*hostnamep != NULL) { |
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459 | free(*hostnamep); |
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460 | *hostnamep = NULL; |
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461 | } |
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462 | if (*usernamep != NULL) { |
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463 | free(*usernamep); |
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464 | *usernamep = NULL; |
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465 | } |
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466 | if (*passwordp != NULL) { |
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467 | free(*passwordp); |
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468 | *passwordp = NULL; |
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469 | } |
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470 | if (*filenamep != NULL) { |
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471 | free(*filenamep); |
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472 | *filenamep = NULL; |
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473 | } |
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474 | } |
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475 | return rc; |
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476 | } |
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477 | |
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478 | int rtems_ftp_evaluate_for_make( |
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479 | const char *path, /* IN */ |
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480 | rtems_filesystem_location_info_t *pathloc, /* IN/OUT */ |
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481 | const char **name /* OUT */ |
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482 | ) |
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483 | { |
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484 | set_errno_and_return_minus_one( EIO ); |
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485 | } |
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486 | |
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487 | /* |
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488 | * XXX - Fix return values. |
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489 | */ |
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490 | |
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491 | int rtems_ftp_eval_path( |
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492 | const char *pathname, /* IN */ |
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493 | int flags, /* IN */ |
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494 | rtems_filesystem_location_info_t *pathloc /* IN/OUT */ |
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495 | ) |
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496 | { |
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497 | |
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498 | /* |
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499 | * Read-only for now |
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500 | */ |
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501 | |
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502 | if ( ((flags & O_RDONLY) != O_RDONLY ) && |
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503 | ((flags & O_WRONLY) != O_WRONLY )) { |
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504 | set_errno_and_return_minus_one( ENOENT ); |
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505 | } |
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506 | /* |
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507 | * The File system is mounted at FTP_PATHNAME_PREFIX |
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508 | * the caller of this routine has striped off this part of the |
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509 | * name. Save the remainder of the name for use by the open routine. |
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510 | */ |
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511 | |
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512 | pathloc->node_access = (void * ) pathname; |
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513 | pathloc->handlers = &rtems_ftp_handlers; |
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514 | |
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515 | return 0; |
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516 | } |
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517 | |
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518 | /* |
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519 | * Open a FTP stream |
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520 | */ |
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521 | int rtems_ftp_open( |
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522 | rtems_libio_t *iop, |
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523 | const char *new_name, |
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524 | uint32_t flag, |
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525 | uint32_t mode |
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526 | ) |
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527 | { |
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528 | int s = 0; |
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529 | char *filename = NULL; |
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530 | char *uname = NULL; |
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531 | char *upass = NULL; |
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532 | char *hostname = NULL; |
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533 | char port_buffer[sizeof(FTP_PORT_CMD)+6*4+1+1]; |
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534 | uint32_t my_ip; |
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535 | uint16_t my_port; |
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536 | int eno = 0; |
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537 | rtems_status_code rc; |
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538 | rtems_boolean is_write = FALSE; |
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539 | rtems_boolean sema_obtained = FALSE; |
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540 | struct ftpStream *fsp = NULL; |
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541 | int msg_tmp = 0; |
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542 | socklen_t sockaddr_size; |
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543 | /* |
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544 | * check for R/O or W/O flags |
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545 | */ |
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546 | if (eno == 0) { |
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547 | if ((0 != (iop->flags & LIBIO_FLAGS_WRITE)) && |
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548 | (0 != (iop->flags & LIBIO_FLAGS_READ))) { |
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549 | eno = ENOTSUP; |
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550 | } |
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551 | else { |
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552 | is_write = (0 != (iop->flags & LIBIO_FLAGS_WRITE)); |
---|
553 | } |
---|
554 | } |
---|
555 | /* |
---|
556 | * split pathname into parts |
---|
557 | */ |
---|
558 | if (eno == 0) { |
---|
559 | eno = rtems_ftp_split_names(iop->file_info, |
---|
560 | &uname, |
---|
561 | &upass, |
---|
562 | &hostname, |
---|
563 | &filename); |
---|
564 | } |
---|
565 | |
---|
566 | /* |
---|
567 | * Find a free stream |
---|
568 | */ |
---|
569 | if (eno == 0) { |
---|
570 | rc = rtems_semaphore_obtain (ftp_mutex, RTEMS_WAIT, RTEMS_NO_TIMEOUT); |
---|
571 | if (rc == RTEMS_SUCCESSFUL) { |
---|
572 | sema_obtained = TRUE; |
---|
573 | } |
---|
574 | else { |
---|
575 | eno = EBUSY; |
---|
576 | } |
---|
577 | } |
---|
578 | if (eno == 0) { |
---|
579 | for (s = 0 ; s < nStreams ; s++) { |
---|
580 | if (ftpStreams[s] == NULL) |
---|
581 | break; |
---|
582 | } |
---|
583 | if (s == nStreams) { |
---|
584 | /* |
---|
585 | * Reallocate stream pointers |
---|
586 | * Guard against the case where realloc() returns NULL. |
---|
587 | */ |
---|
588 | struct ftpStream **np; |
---|
589 | |
---|
590 | np = realloc (ftpStreams, ++nStreams * sizeof *ftpStreams); |
---|
591 | if (np == NULL) { |
---|
592 | eno = ENOMEM; |
---|
593 | } |
---|
594 | else { |
---|
595 | ftpStreams = np; |
---|
596 | } |
---|
597 | } |
---|
598 | } |
---|
599 | if (eno == 0) { |
---|
600 | fsp = ftpStreams[s] = malloc (sizeof (struct ftpStream)); |
---|
601 | rtems_semaphore_release (ftp_mutex); |
---|
602 | sema_obtained = FALSE; |
---|
603 | if (fsp == NULL) { |
---|
604 | eno = ENOMEM; |
---|
605 | } |
---|
606 | else { |
---|
607 | iop->data0 = s; |
---|
608 | iop->data1 = fsp; |
---|
609 | fsp->ctrl_socket = -1; /* mark, that sockets not yet created */ |
---|
610 | fsp->port_socket = -1; |
---|
611 | fsp->data_socket = -1; |
---|
612 | fsp->eof_reached = FALSE; |
---|
613 | } |
---|
614 | } |
---|
615 | if (eno == 0) { |
---|
616 | /* |
---|
617 | * Create the socket for control connection |
---|
618 | */ |
---|
619 | if ((fsp->ctrl_socket = socket (AF_INET, SOCK_STREAM, 0)) < 0) { |
---|
620 | eno = ENOMEM; |
---|
621 | } |
---|
622 | } |
---|
623 | |
---|
624 | if (eno == 0) { |
---|
625 | /* |
---|
626 | * Set the destination to the FTP server |
---|
627 | * port on the remote machine. |
---|
628 | */ |
---|
629 | memset(&(fsp->farCtrlAddress),sizeof(fsp->farCtrlAddress),0); |
---|
630 | fsp->farCtrlAddress.sin_family = AF_INET; |
---|
631 | if (*hostname == '\0') { |
---|
632 | fsp->farCtrlAddress.sin_addr.s_addr = rtems_bsdnet_bootp_server_address.s_addr; |
---|
633 | } |
---|
634 | else if (1 != inet_aton(hostname,&(fsp->farCtrlAddress.sin_addr))) { |
---|
635 | struct hostent *hent; |
---|
636 | struct hostent *gethostbyname(const char *name); |
---|
637 | |
---|
638 | hent = gethostbyname(hostname); |
---|
639 | if (hent != NULL) { |
---|
640 | memcpy(&fsp->farCtrlAddress.sin_addr, |
---|
641 | hent->h_addr, |
---|
642 | sizeof(fsp->farCtrlAddress.sin_addr)); |
---|
643 | } |
---|
644 | else { |
---|
645 | eno = ENOENT; |
---|
646 | } |
---|
647 | } |
---|
648 | if (eno == 0) { |
---|
649 | fsp->farCtrlAddress.sin_port = htons (FTP_PORT_NUM); |
---|
650 | fsp->farCtrlAddress.sin_len = sizeof(fsp->farCtrlAddress); |
---|
651 | if (0 > connect(fsp->ctrl_socket, |
---|
652 | (struct sockaddr *)&(fsp->farCtrlAddress), |
---|
653 | sizeof(fsp->farCtrlAddress))) { |
---|
654 | eno = ENOENT; |
---|
655 | } |
---|
656 | } |
---|
657 | if (eno == 0) { |
---|
658 | /* |
---|
659 | * fetch IP address of interface used |
---|
660 | */ |
---|
661 | memset(&(fsp->myCtrlAddress),sizeof(fsp->myCtrlAddress),0); |
---|
662 | fsp->myCtrlAddress.sin_family = AF_INET; |
---|
663 | fsp->myCtrlAddress.sin_addr.s_addr = INADDR_ANY; |
---|
664 | fsp->myCtrlAddress.sin_port = 0; |
---|
665 | fsp->myCtrlAddress.sin_len = sizeof(fsp->myDataAddress); |
---|
666 | sockaddr_size = sizeof(fsp->myCtrlAddress); |
---|
667 | if (0 > getsockname(fsp->ctrl_socket, |
---|
668 | (struct sockaddr *)&(fsp->myCtrlAddress), |
---|
669 | &sockaddr_size)) { |
---|
670 | eno = ENOMEM; |
---|
671 | } |
---|
672 | } |
---|
673 | } |
---|
674 | if (eno == 0) { |
---|
675 | /* |
---|
676 | * now we should get a connect message from the FTP server |
---|
677 | */ |
---|
678 | eno = rtems_ftp_get_message(fsp,&msg_tmp); |
---|
679 | if ((eno == 0) && |
---|
680 | (msg_tmp != FTP_REPLY_CONNECT)) { |
---|
681 | eno = ENOENT; |
---|
682 | } |
---|
683 | } |
---|
684 | if (eno == 0) { |
---|
685 | /* |
---|
686 | * send user ID to server |
---|
687 | * NOTE: the following lines will be executed in order |
---|
688 | * and will be aborted whenever an error occures... (see your ANSI C book) |
---|
689 | */ |
---|
690 | if ((0 > send(fsp->ctrl_socket,FTP_USER_CMD,strlen(FTP_USER_CMD),0)) || |
---|
691 | (0 > send(fsp->ctrl_socket,uname, strlen(uname), 0)) || |
---|
692 | (0 > send(fsp->ctrl_socket,"\n", 1, 0))) { |
---|
693 | eno = EIO; |
---|
694 | } |
---|
695 | } |
---|
696 | if (eno == 0) { |
---|
697 | /* |
---|
698 | * now we should get a request for the password or a login... |
---|
699 | */ |
---|
700 | eno = rtems_ftp_get_message(fsp,&msg_tmp); |
---|
701 | if (eno == 0) { |
---|
702 | if (msg_tmp == FTP_REPLY_PASSREQ) { |
---|
703 | /* |
---|
704 | * send password to server |
---|
705 | */ |
---|
706 | #ifdef DEBUG_OUT |
---|
707 | write(1,FTP_PASS_CMD,strlen(FTP_PASS_CMD)); |
---|
708 | write(1,upass, strlen(upass) ); |
---|
709 | write(1,"\n", 1 ); |
---|
710 | #endif |
---|
711 | if ((0 > send(fsp->ctrl_socket,FTP_PASS_CMD,strlen(FTP_PASS_CMD),0)) || |
---|
712 | (0 > send(fsp->ctrl_socket,upass, strlen(upass), 0)) || |
---|
713 | (0 > send(fsp->ctrl_socket,"\n", 1, 0))) { |
---|
714 | eno = EIO; |
---|
715 | } |
---|
716 | /* |
---|
717 | * at least now a login reply should come up... |
---|
718 | * this is checked some lines downwards the code |
---|
719 | */ |
---|
720 | if (eno == 0) { |
---|
721 | eno = rtems_ftp_get_message(fsp,&msg_tmp); |
---|
722 | } |
---|
723 | } |
---|
724 | } |
---|
725 | } |
---|
726 | if (eno == 0) { |
---|
727 | /* |
---|
728 | * check for a login reply. this should be present now... |
---|
729 | */ |
---|
730 | if (msg_tmp != FTP_REPLY_LOGIN) { |
---|
731 | eno = EACCES; /* pseudo for wrong user/pass */ |
---|
732 | } |
---|
733 | } |
---|
734 | if (eno == 0) { |
---|
735 | /* |
---|
736 | * set binary mode for all transfers |
---|
737 | */ |
---|
738 | #ifdef DEBUG_OUT |
---|
739 | write(1,FTP_BINARY_CMD,strlen(FTP_BINARY_CMD)); |
---|
740 | write(1,"\n", 1 ); |
---|
741 | #endif |
---|
742 | if ((0 > send(fsp->ctrl_socket,FTP_BINARY_CMD,strlen(FTP_BINARY_CMD),0)) || |
---|
743 | (0 > send(fsp->ctrl_socket,"\n", 1, 0))) { |
---|
744 | eno = EIO; |
---|
745 | } |
---|
746 | else { |
---|
747 | eno = rtems_ftp_get_message(fsp,&msg_tmp); |
---|
748 | } |
---|
749 | } |
---|
750 | if (eno == 0) { |
---|
751 | /* |
---|
752 | * check for a "BINARY TYPE command successful" reply |
---|
753 | */ |
---|
754 | if (msg_tmp != FTP_REPLY_SUCCESS) { |
---|
755 | eno = EIO; |
---|
756 | } |
---|
757 | } |
---|
758 | if (eno == 0) { |
---|
759 | /* |
---|
760 | * create and bind socket for data connection |
---|
761 | */ |
---|
762 | if ((fsp->port_socket = socket (AF_INET, SOCK_STREAM, 0)) < 0) { |
---|
763 | eno = ENOMEM; |
---|
764 | } |
---|
765 | else { |
---|
766 | memset(&(fsp->myDataAddress),sizeof(fsp->myDataAddress),0); |
---|
767 | fsp->myDataAddress.sin_family = AF_INET; |
---|
768 | fsp->myDataAddress.sin_addr.s_addr = INADDR_ANY; |
---|
769 | fsp->myDataAddress.sin_port = 0; /* unique port will be assigned */ |
---|
770 | fsp->myDataAddress.sin_len = sizeof(fsp->myDataAddress); |
---|
771 | if (0 > bind(fsp->port_socket, |
---|
772 | (struct sockaddr *)&(fsp->myDataAddress), |
---|
773 | sizeof(fsp->myDataAddress))) { |
---|
774 | eno = EBUSY; |
---|
775 | } |
---|
776 | else { |
---|
777 | /* |
---|
778 | * fetch port number of data socket |
---|
779 | */ |
---|
780 | memset(&(fsp->myDataAddress),sizeof(fsp->myDataAddress),0); |
---|
781 | fsp->myDataAddress.sin_family = AF_INET; |
---|
782 | fsp->myDataAddress.sin_addr.s_addr = INADDR_ANY; |
---|
783 | fsp->myDataAddress.sin_port = 0; |
---|
784 | fsp->myDataAddress.sin_len = sizeof(fsp->myDataAddress); |
---|
785 | sockaddr_size = sizeof(fsp->myDataAddress); |
---|
786 | if (0 > getsockname(fsp->port_socket, |
---|
787 | (struct sockaddr *)&(fsp->myDataAddress), |
---|
788 | &sockaddr_size)) { |
---|
789 | eno = ENOMEM; |
---|
790 | } |
---|
791 | } |
---|
792 | } |
---|
793 | } |
---|
794 | if (eno == 0) { |
---|
795 | /* |
---|
796 | * propagate data connection port to server |
---|
797 | */ |
---|
798 | my_ip = ntohl(fsp->myCtrlAddress.sin_addr.s_addr); |
---|
799 | my_port = ntohs(fsp->myDataAddress.sin_port); |
---|
800 | sprintf(port_buffer,"%s%" PRIu32 ",%" PRIu32 ",%" PRIu32 ",%" PRIu32 ",%" PRIu16 ",%" PRIu16 "\n", |
---|
801 | FTP_PORT_CMD, |
---|
802 | (my_ip >> 24) & 0x00ff, |
---|
803 | (my_ip >> 16) & 0x00ff, |
---|
804 | (my_ip >> 8) & 0x00ff, |
---|
805 | (my_ip >> 0) & 0x00ff, |
---|
806 | (my_port>> 8) & 0x00ff, |
---|
807 | (my_port>> 0) & 0x00ff); |
---|
808 | #ifdef DEBUG_OUT |
---|
809 | write(1,port_buffer,strlen(port_buffer)); |
---|
810 | #endif |
---|
811 | if (0 > send(fsp->ctrl_socket,port_buffer,strlen(port_buffer),0)) { |
---|
812 | eno = EIO; |
---|
813 | } |
---|
814 | else { |
---|
815 | eno = rtems_ftp_get_message(fsp,&msg_tmp); |
---|
816 | } |
---|
817 | } |
---|
818 | if (eno == 0) { |
---|
819 | /* |
---|
820 | * check for a "PORT command successful" reply |
---|
821 | */ |
---|
822 | if (msg_tmp != FTP_REPLY_SUCCESS) { |
---|
823 | eno = EBUSY; |
---|
824 | } |
---|
825 | } |
---|
826 | /* |
---|
827 | * prepare port socket to listen for incoming connections |
---|
828 | */ |
---|
829 | if (eno == 0) { |
---|
830 | if (0 > listen(fsp->port_socket,1)) { |
---|
831 | eno = EBUSY; |
---|
832 | } |
---|
833 | } |
---|
834 | if (eno == 0) { |
---|
835 | /* |
---|
836 | * send retrive/store command with filename |
---|
837 | */ |
---|
838 | if (is_write) { |
---|
839 | #ifdef DEBUG_OUT |
---|
840 | write(1,FTP_STOR_CMD,strlen(FTP_STOR_CMD)); |
---|
841 | write(1,filename ,strlen(filename) ); |
---|
842 | write(1,"\n",1); |
---|
843 | #endif |
---|
844 | if ((0 > send(fsp->ctrl_socket,FTP_STOR_CMD,strlen(FTP_STOR_CMD),0)) || |
---|
845 | (0 > send(fsp->ctrl_socket,filename, strlen(filename), 0)) || |
---|
846 | (0 > send(fsp->ctrl_socket,"\n", 1, 0))) { |
---|
847 | eno = EIO; |
---|
848 | } |
---|
849 | } |
---|
850 | else { |
---|
851 | #ifdef DEBUG_OUT |
---|
852 | write(1,FTP_RETR_CMD,strlen(FTP_RETR_CMD)); |
---|
853 | write(1,filename ,strlen(filename) ); |
---|
854 | write(1,"\n",1); |
---|
855 | #endif |
---|
856 | if ((0 > send(fsp->ctrl_socket,FTP_RETR_CMD,strlen(FTP_RETR_CMD),0)) || |
---|
857 | (0 > send(fsp->ctrl_socket,filename, strlen(filename), 0)) || |
---|
858 | (0 > send(fsp->ctrl_socket,"\n", 1, 0))) { |
---|
859 | eno = EIO; |
---|
860 | } |
---|
861 | } |
---|
862 | } |
---|
863 | #if 1 |
---|
864 | if (eno == 0) { |
---|
865 | eno = rtems_ftp_get_message(fsp,&msg_tmp); |
---|
866 | } |
---|
867 | if (eno == 0) { |
---|
868 | /* |
---|
869 | * check for a "OPENING binary connection" reply |
---|
870 | */ |
---|
871 | if (msg_tmp != FTP_REPLY_OPENCONN) { |
---|
872 | eno = EACCES; |
---|
873 | } |
---|
874 | } |
---|
875 | #endif |
---|
876 | /* |
---|
877 | * wait for connect on data connection |
---|
878 | * FIXME: this should become a select instead with a timeout |
---|
879 | */ |
---|
880 | if (eno == 0) { |
---|
881 | sockaddr_size = sizeof(fsp->farDataAddress); |
---|
882 | fsp->data_socket = accept(fsp->port_socket, |
---|
883 | (struct sockaddr *)&(fsp->farDataAddress), |
---|
884 | &sockaddr_size); |
---|
885 | if (0 > fsp->data_socket) { |
---|
886 | eno = EIO; |
---|
887 | } |
---|
888 | } |
---|
889 | /* |
---|
890 | * FIXME: check, that fardataAddr is really from our ftp server |
---|
891 | */ |
---|
892 | |
---|
893 | /* |
---|
894 | * clean up temp strings... |
---|
895 | */ |
---|
896 | if (uname != NULL) { |
---|
897 | free(uname); |
---|
898 | uname = NULL; |
---|
899 | } |
---|
900 | if (upass != NULL) { |
---|
901 | free(upass); |
---|
902 | upass = NULL; |
---|
903 | } |
---|
904 | if (hostname != NULL) { |
---|
905 | free(hostname); |
---|
906 | hostname = NULL; |
---|
907 | } |
---|
908 | if (filename != NULL) { |
---|
909 | free(filename); |
---|
910 | filename = NULL; |
---|
911 | } |
---|
912 | /* |
---|
913 | * close part socket, no longer needed |
---|
914 | */ |
---|
915 | if (fsp->port_socket != -1) { |
---|
916 | close(fsp->port_socket); |
---|
917 | fsp->port_socket = -1; |
---|
918 | } |
---|
919 | /* |
---|
920 | * if error, clean up everything |
---|
921 | */ |
---|
922 | if (eno != 0) { |
---|
923 | if (fsp != NULL) { |
---|
924 | /* |
---|
925 | * check and close ctrl/data connection |
---|
926 | */ |
---|
927 | if (fsp->data_socket != -1) { |
---|
928 | close(fsp->data_socket); |
---|
929 | fsp->data_socket = -1; |
---|
930 | } |
---|
931 | if (fsp->ctrl_socket != -1) { |
---|
932 | close(fsp->ctrl_socket); |
---|
933 | fsp->ctrl_socket = -1; |
---|
934 | } |
---|
935 | /* |
---|
936 | * free ftpStream structure |
---|
937 | */ |
---|
938 | ftpStreams[s] = NULL; |
---|
939 | free(fsp); |
---|
940 | fsp = NULL; |
---|
941 | } |
---|
942 | } |
---|
943 | /* |
---|
944 | * return sema, if still occupied |
---|
945 | */ |
---|
946 | if (sema_obtained) { |
---|
947 | rtems_semaphore_release (ftp_mutex); |
---|
948 | sema_obtained = FALSE; |
---|
949 | } |
---|
950 | #if 0 |
---|
951 | if (eno != 0) { |
---|
952 | set_errno_and_return_minus_one(eno); |
---|
953 | } |
---|
954 | return 0; |
---|
955 | #else |
---|
956 | return eno; |
---|
957 | #endif |
---|
958 | } |
---|
959 | |
---|
960 | /* |
---|
961 | * Read from a FTP stream |
---|
962 | */ |
---|
963 | ssize_t rtems_ftp_read( |
---|
964 | rtems_libio_t *iop, |
---|
965 | void *buffer, |
---|
966 | size_t count |
---|
967 | ) |
---|
968 | { |
---|
969 | int eno = 0; |
---|
970 | struct ftpStream *fsp; |
---|
971 | size_t want_cnt; |
---|
972 | ssize_t rd_cnt; |
---|
973 | int msg_tmp = 0; |
---|
974 | |
---|
975 | fsp = iop->data1; |
---|
976 | want_cnt = count; |
---|
977 | /* |
---|
978 | * check, that data connection present |
---|
979 | */ |
---|
980 | if (eno == 0) { |
---|
981 | if ((fsp == NULL) || |
---|
982 | (fsp->data_socket < 0)) { |
---|
983 | eno = EBADF; |
---|
984 | } |
---|
985 | } |
---|
986 | |
---|
987 | /* |
---|
988 | * perform read from data socket |
---|
989 | * read multiple junks, if smaller than wanted |
---|
990 | */ |
---|
991 | while ((eno == 0) && |
---|
992 | (want_cnt > 0) && |
---|
993 | !(fsp->eof_reached) ) { |
---|
994 | rd_cnt = read(fsp->data_socket,buffer,want_cnt); |
---|
995 | if (rd_cnt > 0) { |
---|
996 | buffer += rd_cnt; |
---|
997 | want_cnt -= rd_cnt; |
---|
998 | } |
---|
999 | else { |
---|
1000 | eno = rtems_ftp_get_message(fsp,&msg_tmp); |
---|
1001 | fsp->eof_reached = TRUE; |
---|
1002 | if ((eno == 0) && |
---|
1003 | (msg_tmp != FTP_REPLY_TFERCMPL)) { |
---|
1004 | eno = EIO; |
---|
1005 | } |
---|
1006 | if (rd_cnt < 0) { |
---|
1007 | eno = EIO; |
---|
1008 | } |
---|
1009 | } |
---|
1010 | } |
---|
1011 | if (eno != 0) { |
---|
1012 | set_errno_and_return_minus_one(eno); |
---|
1013 | } |
---|
1014 | return count - want_cnt; |
---|
1015 | } |
---|
1016 | |
---|
1017 | ssize_t rtems_ftp_write( |
---|
1018 | rtems_libio_t *iop, |
---|
1019 | const void *buffer, |
---|
1020 | size_t count |
---|
1021 | ) |
---|
1022 | { |
---|
1023 | int eno = EIO; |
---|
1024 | struct ftpStream *fsp; |
---|
1025 | size_t want_cnt; |
---|
1026 | ssize_t wr_cnt; |
---|
1027 | int msg_tmp = 0; |
---|
1028 | |
---|
1029 | fsp = iop->data1; |
---|
1030 | want_cnt = count; |
---|
1031 | /* |
---|
1032 | * check, that data connection present |
---|
1033 | */ |
---|
1034 | if (eno == 0) { |
---|
1035 | if ((fsp == NULL) || |
---|
1036 | (fsp->data_socket < 0)) { |
---|
1037 | eno = EBADF; |
---|
1038 | } |
---|
1039 | } |
---|
1040 | |
---|
1041 | /* |
---|
1042 | * perform write to data socket |
---|
1043 | */ |
---|
1044 | if (eno == 0) { |
---|
1045 | wr_cnt = write(fsp->data_socket,buffer,want_cnt); |
---|
1046 | if (wr_cnt > 0) { |
---|
1047 | buffer += wr_cnt; |
---|
1048 | want_cnt -= wr_cnt; |
---|
1049 | } |
---|
1050 | else { |
---|
1051 | eno = rtems_ftp_get_message(fsp,&msg_tmp); |
---|
1052 | if ((eno == 0) && |
---|
1053 | (msg_tmp != FTP_REPLY_TFERCMPL)) { |
---|
1054 | eno = EIO; |
---|
1055 | } |
---|
1056 | if (wr_cnt < 0) { |
---|
1057 | eno = EIO; |
---|
1058 | } |
---|
1059 | } |
---|
1060 | } |
---|
1061 | if (eno != 0) { |
---|
1062 | set_errno_and_return_minus_one(eno); |
---|
1063 | } |
---|
1064 | return count - want_cnt; |
---|
1065 | } |
---|
1066 | |
---|
1067 | /* |
---|
1068 | * Close a FTP stream |
---|
1069 | */ |
---|
1070 | int rtems_ftp_close( |
---|
1071 | rtems_libio_t *iop |
---|
1072 | ) |
---|
1073 | { |
---|
1074 | int s = iop->data0; |
---|
1075 | struct ftpStream *fsp = iop->data1; |
---|
1076 | |
---|
1077 | /* |
---|
1078 | * close ctrl/data connection, if needed |
---|
1079 | */ |
---|
1080 | if (fsp->data_socket >= 0) { |
---|
1081 | close(fsp->data_socket); |
---|
1082 | fsp->data_socket = -1; |
---|
1083 | } |
---|
1084 | if (fsp->ctrl_socket >= 0) { |
---|
1085 | close(fsp->ctrl_socket); |
---|
1086 | fsp->ctrl_socket = -1; |
---|
1087 | } |
---|
1088 | /* |
---|
1089 | * free any used space... |
---|
1090 | */ |
---|
1091 | rtems_semaphore_obtain (ftp_mutex, RTEMS_WAIT, RTEMS_NO_TIMEOUT); |
---|
1092 | free (ftpStreams[s]); |
---|
1093 | ftpStreams[s] = NULL; |
---|
1094 | rtems_semaphore_release (ftp_mutex); |
---|
1095 | |
---|
1096 | return 0; |
---|
1097 | } |
---|
1098 | |
---|
1099 | rtems_device_driver rtems_ftp_control( |
---|
1100 | rtems_device_major_number major, |
---|
1101 | rtems_device_minor_number minor, |
---|
1102 | void *pargp |
---|
1103 | ) |
---|
1104 | { |
---|
1105 | return RTEMS_NOT_CONFIGURED; |
---|
1106 | } |
---|
1107 | |
---|
1108 | /* |
---|
1109 | * Dummy version to let fopen(xxxx,"w") work properly. |
---|
1110 | */ |
---|
1111 | static int rtems_ftp_ftruncate( |
---|
1112 | rtems_libio_t *iop, |
---|
1113 | off_t count |
---|
1114 | ) |
---|
1115 | { |
---|
1116 | return 0; |
---|
1117 | } |
---|
1118 | |
---|
1119 | rtems_filesystem_node_types_t rtems_ftp_node_type( |
---|
1120 | rtems_filesystem_location_info_t *pathloc /* IN */ |
---|
1121 | ) |
---|
1122 | { |
---|
1123 | return RTEMS_FILESYSTEM_MEMORY_FILE; |
---|
1124 | } |
---|
1125 | |
---|
1126 | rtems_filesystem_operations_table rtems_ftp_ops = { |
---|
1127 | rtems_ftp_eval_path, /* eval_path */ |
---|
1128 | rtems_ftp_evaluate_for_make, /* evaluate_for_make */ |
---|
1129 | NULL, /* link */ |
---|
1130 | NULL, /* unlink */ |
---|
1131 | rtems_ftp_node_type, /* node_type */ |
---|
1132 | NULL, /* mknod */ |
---|
1133 | NULL, /* chown */ |
---|
1134 | NULL, /* freenodinfo */ |
---|
1135 | NULL, /* mount */ |
---|
1136 | rtems_ftp_mount_me, /* initialize */ |
---|
1137 | NULL, /* unmount */ |
---|
1138 | NULL, /* fsunmount */ |
---|
1139 | NULL, /* utime, */ |
---|
1140 | NULL, /* evaluate_link */ |
---|
1141 | NULL, /* symlink */ |
---|
1142 | NULL, /* readlin */ |
---|
1143 | }; |
---|
1144 | |
---|
1145 | rtems_filesystem_file_handlers_r rtems_ftp_handlers = { |
---|
1146 | rtems_ftp_open, /* open */ |
---|
1147 | rtems_ftp_close, /* close */ |
---|
1148 | rtems_ftp_read, /* read */ |
---|
1149 | rtems_ftp_write, /* write */ |
---|
1150 | NULL, /* ioctl */ |
---|
1151 | NULL, /* lseek */ |
---|
1152 | NULL, /* fstat */ |
---|
1153 | NULL, /* fchmod */ |
---|
1154 | rtems_ftp_ftruncate, /* ftruncate */ |
---|
1155 | NULL, /* fpathconf */ |
---|
1156 | NULL, /* fsync */ |
---|
1157 | NULL, /* fdatasync */ |
---|
1158 | NULL, /* fcntl */ |
---|
1159 | NULL /* rmnod */ |
---|
1160 | }; |
---|