110
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1 /*
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2 * histolog.c -- File history handling
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3 *
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4 * Copyright (C) 2005 Mikael Berthe <bmikael@lists.lilotux.net>
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5 *
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6 * This program is free software; you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation; either version 2 of the License, or (at
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9 * your option) any later version.
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10 *
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11 * This program is distributed in the hope that it will be useful, but
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 * General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU General Public License
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17 * along with this program; if not, write to the Free Software
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18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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19 * USA
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20 */
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21
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22 #include <string.h>
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23 #include <stdlib.h>
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24 #include <time.h>
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113
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25 #include <ctype.h>
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26 #include <sys/types.h>
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27 #include <sys/stat.h>
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28 #include <fcntl.h>
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29
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30 #include "histolog.h"
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178
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31 #include "hbuf.h"
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113
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32 #include "jabglue.h"
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110
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33 #include "screen.h"
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241
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34 #include "utils.h"
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35
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36 static guint UseFileLogging;
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37 static guint FileLoadLogs;
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38 static char *RootDir;
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39
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40
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41 // user_histo_file()
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42 // Returns history filename for the given jid
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43 // Note: the caller *must* free the filename after use (if not null).
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44 static char *user_histo_file(const char *jid)
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45 {
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46 char *filename;
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47 char *lowerid, *p;
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48 if (!UseFileLogging && !FileLoadLogs) return NULL;
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49
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186
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50 lowerid = g_strdup(jid);
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51 for (p=lowerid; *p ; p++)
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52 *p = tolower(*p);
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53
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54 filename = g_new(char, strlen(RootDir) + strlen(jid) + 1);
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55 strcpy(filename, RootDir);
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56 strcat(filename, lowerid);
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57 g_free(lowerid);
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58 return filename;
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59 }
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60
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178
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61 // write_histo_line()
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62 // Adds a history (multi-)line to the jid's history logfile
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63 static void write_histo_line(const char *jid,
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64 time_t timestamp, guchar type, guchar info, const char *data)
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65 {
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66 guint len = 0;
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67 FILE *fp;
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68 time_t ts;
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69 const char *p;
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70 char *filename;
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71 char str_ts[20];
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72 int err;
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73
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74 if (!UseFileLogging) return;
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75
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76 filename = user_histo_file(jid);
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77
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78 // If timestamp is null, get current date
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79 if (timestamp)
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80 ts = timestamp;
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81 else
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82 time(&ts);
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83
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84 if (!data)
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85 data = "";
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86
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87 // Count number of extra lines
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88 for (p=data ; *p ; p++)
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89 if (*p == '\n') len++;
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90
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241
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91 /* Line format: "TI yyyymmddThh:mm:ssZ [data]"
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92 * (Old format: "TI DDDDDDDDDD LLL [data])"
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93 * T=Type, I=Info, yyyymmddThh:mm:ssZ=date, LLL=0-padded-len
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94 *
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95 * Types:
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96 * - M message Info: S (send) R (receive)
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97 * - S status Info: [oaifdcn]
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98 * We don't check them, we'll trust the caller.
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99 */
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100
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101 fp = fopen(filename, "a");
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102 g_free(filename);
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103 if (!fp) {
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104 scr_LogPrint("Unable to write history (cannot open logfile)");
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105 return;
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106 }
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107
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108 to_iso8601(str_ts, ts);
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109 err = fprintf(fp, "%c%c %-18.18s %03d %s\n", type, info, str_ts, len, data);
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110 fclose(fp);
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111 if (err < 0) {
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112 scr_LogPrint("Error while writing to log file: %s", strerror(errno));
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113 }
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110
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114 }
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115
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178
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116 // hlog_read_history()
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117 // Reads the jid's history logfile
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118 void hlog_read_history(const char *jid, GList **p_buddyhbuf, guint width)
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119 {
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120 char *filename;
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121 guchar type, info;
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122 char *data, *tail;
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123 time_t timestamp;
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124 guint prefix_flags;
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125 guint len;
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126 FILE *fp;
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127 struct stat bufstat;
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128 guint err = 0;
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129 guint ln = 0; // line number
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130
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131 if (!FileLoadLogs) return;
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132
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133 data = g_new(char, HBB_BLOCKSIZE+32);
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134 if (!data) {
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135 scr_LogPrint("Not enough memory to read history file");
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136 return;
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137 }
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138
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139 filename = user_histo_file(jid);
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140
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141 fp = fopen(filename, "r");
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142 g_free(filename);
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143 if (!fp) { g_free(data); return; }
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144
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197
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145 // If file is large (> 512 here), display a message to inform the user
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146 // (it can take a while...)
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147 if (!fstat(fileno(fp), &bufstat)) {
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148 if (bufstat.st_size > 524288)
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149 scr_LogPrint("Reading <%s> history file...", jid);
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150 }
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151
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178
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152 /* See write_histo_line() for line format... */
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153 while (!feof(fp)) {
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154 if (fgets(data, HBB_BLOCKSIZE+27, fp) == NULL) break;
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155 ln++;
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156
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157 for (tail = data; *tail; tail++) ;
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158
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159 type = data[0];
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160 info = data[1];
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161
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162 if ((type != 'M' && type != 'S') ||
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163 ((data[11] != 'T') || (data[20] != 'Z') ||
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164 (data[21] != ' ') || (data[25] != ' '))) {
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165 if (!err) {
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166 scr_LogPrint("Error in history file format (%s), l.%u", jid, ln);
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167 err = 1;
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168 }
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169 //break;
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170 continue;
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171 }
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172 data[21] = data[25] = 0;
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173 timestamp = from_iso8601(&data[3], 1);
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174 len = (guint) atoi(&data[22]);
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175
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176 // Some checks
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177 if (((type == 'M') && (info != 'S' && info != 'R')) ||
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183
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178 ((type == 'I') && (!strchr("OAIFDCN", info)))) {
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179 if (!err) {
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180 scr_LogPrint("Error in history file format (%s), l.%u", jid, ln);
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181 err = 1;
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182 }
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186
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183 //break;
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184 continue;
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185 }
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186
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197
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187 // XXX This will fail when a message is too big
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188 while (len--) {
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189 ln++;
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190 if (fgets(tail, HBB_BLOCKSIZE+27 - (tail-data), fp) == NULL)
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191 break;
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192
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193 while (*tail) tail++;
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194 }
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248
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195 // Small check for too long messages
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196 if (tail >= HBB_BLOCKSIZE+26 + data) {
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197 // Maybe we will have a parse error on next, because this
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198 // message is big (maybe too big).
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199 scr_LogPrint("A message could be too big in history file...");
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200 }
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251
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201 // Remove last CR (we keep it if the line is empty, too)
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202 if ((tail > data+26) && (*(tail-1) == '\n'))
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203 *(tail-1) = 0;
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204
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205 if (type == 'M') {
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206 if (info == 'S')
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207 prefix_flags = HBB_PREFIX_OUT;
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208 else
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209 prefix_flags = HBB_PREFIX_IN;
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210 hbuf_add_line(p_buddyhbuf, &data[26], timestamp,
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211 prefix_flags, width);
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212 err = 0;
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213 }
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214 }
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215 fclose(fp);
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216 g_free(data);
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217 }
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218
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219 // hlog_enable()
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220 // Enable logging to files. If root_dir is NULL, then $HOME/.mcabber is used.
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221 // If loadfiles is TRUE, we will try to load buddies history logs from file.
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222 void hlog_enable(guint enable, char *root_dir, guint loadfiles)
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223 {
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224 UseFileLogging = enable;
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225 FileLoadLogs = loadfiles;
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226
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227 if (enable || loadfiles) {
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228 if (root_dir) {
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229 int l = strlen(root_dir);
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230 if (l < 1) {
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231 scr_LogPrint("root_dir too short");
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232 UseFileLogging = FALSE;
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233 return;
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234 }
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235 // RootDir must be slash-terminated
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236 if (root_dir[l-1] == '/')
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237 RootDir = g_strdup(root_dir);
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238 else {
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239 RootDir = g_new(char, l+2);
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240 strcpy(RootDir, root_dir);
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241 strcat(RootDir, "/");
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242 }
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243 } else {
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244 char *home = getenv("HOME");
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245 char *dir = "/.mcabber/histo/";
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246 RootDir = g_new(char, strlen(home) + strlen(dir) + 1);
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247 strcpy(RootDir, home);
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248 strcat(RootDir, dir);
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249 }
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250 // FIXME
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251 // We should check the directory actually exists
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252 } else // Disable history logging
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253 if (RootDir) {
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254 g_free(RootDir);
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255 }
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256 }
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257
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258 inline void hlog_write_message(const char *jid, time_t timestamp, int sent,
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259 const char *msg)
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260 {
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261 write_histo_line(jid, timestamp, 'M', ((sent) ? 'S' : 'R'), msg);
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262 }
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263
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264 inline void hlog_write_status(const char *jid, time_t timestamp,
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265 enum imstatus status, const char *status_msg)
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266 {
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267 // #1 XXX Check status value?
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268 // #2 We could add a user-readable comment
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269 write_histo_line(jid, timestamp, 'S', toupper(imstatus2char[status]),
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270 status_msg);
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271 }
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272
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