1 | /***************************************************************************\ |
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2 | * * |
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3 | * BitlBee - An IRC to IM gateway * |
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4 | * libpurple module - File transfer stuff * |
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5 | * * |
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6 | * Copyright 2009-2010 Wilmer van der Gaast <wilmer@gaast.net> * |
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7 | * * |
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8 | * This program is free software; you can redistribute it and/or modify * |
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9 | * it under the terms of the GNU General Public License as published by * |
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10 | * the Free Software Foundation; either version 2 of the License, or * |
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11 | * (at your option) any later version. * |
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12 | * * |
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13 | * This program is distributed in the hope that it will be useful, * |
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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16 | * GNU General Public License for more details. * |
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17 | * * |
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18 | * You should have received a copy of the GNU General Public License along * |
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19 | * with this program; if not, write to the Free Software Foundation, Inc., * |
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20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * |
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21 | * * |
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22 | \***************************************************************************/ |
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23 | |
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24 | /* This code tries to do direct file transfers, i.e. without caching the file |
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25 | locally on disk first. Since libpurple can only do this since version 2.6.0 |
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26 | and even then very unreliably (and not with all IM modules), I'm canning |
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27 | this code for now. */ |
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28 | |
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29 | #include "bitlbee.h" |
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30 | |
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31 | #include <stdarg.h> |
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32 | |
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33 | #include <glib.h> |
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34 | #include <purple.h> |
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35 | |
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36 | struct prpl_xfer_data { |
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37 | PurpleXfer *xfer; |
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38 | file_transfer_t *ft; |
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39 | gint ready_timer; |
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40 | char *buf; |
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41 | int buf_len; |
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42 | }; |
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43 | |
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44 | static file_transfer_t *next_ft; |
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45 | |
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46 | struct im_connection *purple_ic_by_pa(PurpleAccount *pa); |
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47 | |
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48 | /* Glorious hack: We seem to have to remind at least some libpurple plugins |
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49 | that we're ready because this info may get lost if we give it too early. |
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50 | So just do it ten times a second. :-/ */ |
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51 | static gboolean prplcb_xfer_write_request_cb(gpointer data, gint fd, b_input_condition cond) |
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52 | { |
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53 | struct prpl_xfer_data *px = data; |
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54 | |
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55 | purple_xfer_ui_ready(px->xfer); |
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56 | |
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57 | return purple_xfer_get_type(px->xfer) == PURPLE_XFER_RECEIVE; |
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58 | } |
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59 | |
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60 | static gboolean prpl_xfer_write_request(struct file_transfer *ft) |
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61 | { |
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62 | struct prpl_xfer_data *px = ft->data; |
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63 | |
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64 | px->ready_timer = b_timeout_add(100, prplcb_xfer_write_request_cb, px); |
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65 | return TRUE; |
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66 | } |
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67 | |
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68 | static gboolean prpl_xfer_write(struct file_transfer *ft, char *buffer, unsigned int len) |
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69 | { |
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70 | struct prpl_xfer_data *px = ft->data; |
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71 | |
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72 | px->buf = g_memdup(buffer, len); |
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73 | px->buf_len = len; |
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74 | |
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75 | //purple_xfer_ui_ready( px->xfer ); |
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76 | px->ready_timer = b_timeout_add(0, prplcb_xfer_write_request_cb, px); |
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77 | |
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78 | return TRUE; |
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79 | } |
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80 | |
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81 | static void prpl_xfer_accept(struct file_transfer *ft) |
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82 | { |
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83 | struct prpl_xfer_data *px = ft->data; |
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84 | |
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85 | purple_xfer_request_accepted(px->xfer, NULL); |
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86 | prpl_xfer_write_request(ft); |
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87 | } |
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88 | |
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89 | static void prpl_xfer_canceled(struct file_transfer *ft, char *reason) |
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90 | { |
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91 | struct prpl_xfer_data *px = ft->data; |
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92 | |
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93 | purple_xfer_request_denied(px->xfer); |
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94 | } |
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95 | |
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96 | static gboolean prplcb_xfer_new_send_cb(gpointer data, gint fd, b_input_condition cond) |
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97 | { |
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98 | PurpleXfer *xfer = data; |
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99 | struct im_connection *ic = purple_ic_by_pa(xfer->account); |
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100 | struct prpl_xfer_data *px = g_new0(struct prpl_xfer_data, 1); |
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101 | PurpleBuddy *buddy; |
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102 | const char *who; |
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103 | |
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104 | buddy = purple_find_buddy(xfer->account, xfer->who); |
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105 | who = buddy ? purple_buddy_get_name(buddy) : xfer->who; |
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106 | |
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107 | /* TODO(wilmer): After spreading some more const goodness in BitlBee, |
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108 | remove the evil cast below. */ |
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109 | px->ft = imcb_file_send_start(ic, (char *) who, xfer->filename, xfer->size); |
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110 | px->ft->data = px; |
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111 | px->xfer = data; |
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112 | px->xfer->ui_data = px; |
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113 | |
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114 | px->ft->accept = prpl_xfer_accept; |
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115 | px->ft->canceled = prpl_xfer_canceled; |
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116 | px->ft->write_request = prpl_xfer_write_request; |
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117 | |
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118 | return FALSE; |
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119 | } |
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120 | |
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121 | static void prplcb_xfer_new(PurpleXfer *xfer) |
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122 | { |
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123 | if (purple_xfer_get_type(xfer) == PURPLE_XFER_RECEIVE) { |
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124 | /* This should suppress the stupid file dialog. */ |
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125 | purple_xfer_set_local_filename(xfer, "/tmp/wtf123"); |
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126 | |
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127 | /* Sadly the xfer struct is still empty ATM so come back after |
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128 | the caller is done. */ |
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129 | b_timeout_add(0, prplcb_xfer_new_send_cb, xfer); |
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130 | } else { |
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131 | struct prpl_xfer_data *px = g_new0(struct prpl_xfer_data, 1); |
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132 | |
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133 | px->ft = next_ft; |
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134 | px->ft->data = px; |
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135 | px->xfer = xfer; |
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136 | px->xfer->ui_data = px; |
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137 | |
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138 | purple_xfer_set_filename(xfer, px->ft->file_name); |
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139 | purple_xfer_set_size(xfer, px->ft->file_size); |
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140 | |
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141 | next_ft = NULL; |
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142 | } |
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143 | } |
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144 | |
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145 | static void prplcb_xfer_progress(PurpleXfer *xfer, double percent) |
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146 | { |
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147 | fprintf(stderr, "prplcb_xfer_dbg 0x%p %f\n", xfer, percent); |
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148 | } |
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149 | |
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150 | static void prplcb_xfer_dbg(PurpleXfer *xfer) |
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151 | { |
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152 | fprintf(stderr, "prplcb_xfer_dbg 0x%p\n", xfer); |
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153 | } |
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154 | |
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155 | static gssize prplcb_xfer_write(PurpleXfer *xfer, const guchar *buffer, gssize size) |
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156 | { |
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157 | struct prpl_xfer_data *px = xfer->ui_data; |
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158 | gboolean st; |
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159 | |
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160 | fprintf(stderr, "xfer_write %d %d\n", size, px->buf_len); |
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161 | |
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162 | b_event_remove(px->ready_timer); |
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163 | px->ready_timer = 0; |
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164 | |
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165 | st = px->ft->write(px->ft, (char *) buffer, size); |
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166 | |
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167 | if (st && xfer->bytes_remaining == size) { |
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168 | imcb_file_finished(px->ft); |
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169 | } |
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170 | |
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171 | return st ? size : 0; |
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172 | } |
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173 | |
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174 | gssize prplcb_xfer_read(PurpleXfer *xfer, guchar **buffer, gssize size) |
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175 | { |
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176 | struct prpl_xfer_data *px = xfer->ui_data; |
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177 | |
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178 | fprintf(stderr, "xfer_read %d %d\n", size, px->buf_len); |
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179 | |
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180 | if (px->buf) { |
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181 | *buffer = px->buf; |
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182 | px->buf = NULL; |
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183 | |
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184 | px->ft->write_request(px->ft); |
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185 | |
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186 | return px->buf_len; |
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187 | } |
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188 | |
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189 | return 0; |
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190 | } |
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191 | |
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192 | PurpleXferUiOps bee_xfer_uiops = |
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193 | { |
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194 | prplcb_xfer_new, |
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195 | prplcb_xfer_dbg, |
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196 | prplcb_xfer_dbg, |
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197 | prplcb_xfer_progress, |
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198 | prplcb_xfer_dbg, |
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199 | prplcb_xfer_dbg, |
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200 | prplcb_xfer_write, |
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201 | prplcb_xfer_read, |
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202 | prplcb_xfer_dbg, |
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203 | }; |
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204 | |
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205 | static gboolean prplcb_xfer_send_cb(gpointer data, gint fd, b_input_condition cond); |
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206 | |
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207 | void purple_transfer_request(struct im_connection *ic, file_transfer_t *ft, char *handle) |
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208 | { |
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209 | PurpleAccount *pa = ic->proto_data; |
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210 | struct prpl_xfer_data *px; |
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211 | |
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212 | /* xfer_new() will pick up this variable. It's a hack but we're not |
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213 | multi-threaded anyway. */ |
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214 | next_ft = ft; |
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215 | serv_send_file(purple_account_get_connection(pa), handle, ft->file_name); |
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216 | |
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217 | ft->write = prpl_xfer_write; |
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218 | |
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219 | px = ft->data; |
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220 | imcb_file_recv_start(ft); |
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221 | |
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222 | px->ready_timer = b_timeout_add(100, prplcb_xfer_send_cb, px); |
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223 | } |
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224 | |
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225 | static gboolean prplcb_xfer_send_cb(gpointer data, gint fd, b_input_condition cond) |
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226 | { |
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227 | struct prpl_xfer_data *px = data; |
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228 | |
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229 | if (px->ft->status & FT_STATUS_TRANSFERRING) { |
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230 | fprintf(stderr, "The ft, it is ready...\n"); |
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231 | px->ft->write_request(px->ft); |
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232 | |
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233 | return FALSE; |
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234 | } |
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235 | |
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236 | return TRUE; |
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237 | } |
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