Mercurial > ~mikael > mcabber > hg
annotate mcabber/src/utils.c @ 428:4470868f90e5
Check the tracelog file actually belongs to the user (if logging enabled)
| author | Mikael Berthe <mikael@lilotux.net> |
|---|---|
| date | Sat, 10 Sep 2005 14:51:57 +0200 |
| parents | 2f9852610cf4 |
| children | dfd9c62b3a39 |
| rev | line source |
|---|---|
| 241 | 1 /* |
| 2 * utils.c -- Various utility functions | |
| 393 | 3 * |
| 241 | 4 * Copyright (C) 2005 Mikael Berthe <bmikael@lists.lilotux.net> |
| 5 * ut_* functions are derived from Cabber debug/log code. | |
| 6 * from_iso8601() comes from the Gaim project. | |
| 7 * | |
| 8 * This program is free software; you can redistribute it and/or modify | |
| 9 * it under the terms of the GNU General Public License as published by | |
| 10 * the Free Software Foundation; either version 2 of the License, or (at | |
| 11 * your option) any later version. | |
| 12 * | |
| 13 * This program is distributed in the hope that it will be useful, but | |
| 14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 16 * General Public License for more details. | |
| 17 * | |
| 18 * You should have received a copy of the GNU General Public License | |
| 19 * along with this program; if not, write to the Free Software | |
| 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
| 21 * USA | |
| 22 */ | |
| 23 | |
| 24 | 24 #include <stdio.h> |
| 25 #include <stdlib.h> | |
| 77 | 26 #include <string.h> |
| 24 | 27 #include <stdarg.h> |
| 28 #include <time.h> | |
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29 #include <unistd.h> |
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30 #include <sys/types.h> |
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31 #include <sys/stat.h> |
| 24 | 32 |
| 241 | 33 #include <config.h> |
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34 #include "logprint.h" |
| 241 | 35 |
| 76 | 36 static int DebugEnabled; |
| 77 | 37 static char *FName; |
| 24 | 38 |
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39 void ut_InitDebug(unsigned int level, const char *filename) |
| 24 | 40 { |
| 77 | 41 FILE *fp; |
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42 struct stat buf; |
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43 int err; |
| 77 | 44 |
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45 if (level < 1) { |
| 138 | 46 DebugEnabled = 0; |
| 47 FName = NULL; | |
| 48 return; | |
| 49 } | |
| 50 | |
| 51 if (filename) | |
| 52 FName = strdup(filename); | |
| 77 | 53 else { |
| 138 | 54 FName = getenv("HOME"); |
| 55 if (!FName) | |
| 56 FName = "/tmp/mcabberlog"; | |
| 57 else { | |
| 58 char *tmpname = malloc(strlen(FName) + 12); | |
| 59 strcpy(tmpname, FName); | |
| 60 strcat(tmpname, "/mcabberlog"); | |
| 61 FName = tmpname; | |
| 62 } | |
| 77 | 63 } |
| 24 | 64 |
| 65 DebugEnabled = level; | |
| 76 | 66 |
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67 fp = fopen(FName, "a"); |
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68 if (!fp) { |
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69 fprintf(stderr, "ERROR: Cannot open tracelog file\n"); |
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70 return; |
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71 } |
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72 |
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73 err = fstat(fileno(fp), &buf); |
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74 if (err || buf.st_uid != geteuid()) { |
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75 fclose(fp); |
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76 DebugEnabled = 0; |
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77 FName = NULL; |
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78 if (err) { |
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79 fprintf(stderr, "ERROR: cannot stat the tracelog file!\n"); |
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80 } else { |
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81 fprintf(stderr, "ERROR: tracelog file does not belong to you!\n"); |
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82 } |
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83 return; |
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84 } |
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85 fchmod(fileno(fp), S_IRUSR|S_IWUSR); |
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86 |
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87 fprintf(fp, "New trace log started.\n" |
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88 "----------------------\n"); |
| 24 | 89 fclose(fp); |
| 90 } | |
| 91 | |
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92 void ut_WriteLog(unsigned int flag, const char *data) |
| 24 | 93 { |
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94 if (!DebugEnabled || !FName) return; |
| 393 | 95 |
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96 if (((DebugEnabled == 2) && (flag & (LPRINT_LOG|LPRINT_DEBUG))) || |
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97 ((DebugEnabled == 1) && (flag & LPRINT_LOG))) { |
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98 FILE *fp = fopen(FName, "a+"); |
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99 if (!fp) { |
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100 scr_LogPrint(LPRINT_NORMAL, "ERROR: Cannot open tracelog file"); |
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101 return; |
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102 } |
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103 fputs(data, fp); |
| 24 | 104 fclose(fp); |
| 105 } | |
| 106 } | |
| 107 | |
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108 // checkset_perm(name, setmode) |
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109 // Check the permissions of the "name" file/dir |
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110 // If setmode is true, correct the permissions if they are wrong |
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111 // Return values: -1 == bad file/dir, 0 == success, 1 == cannot correct |
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112 int checkset_perm(const char *name, unsigned int setmode) |
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113 { |
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114 int fd; |
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115 struct stat buf; |
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116 |
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117 fd = lstat(name, &buf); |
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118 if (fd == -1) return -1; |
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119 |
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120 if (buf.st_uid != geteuid()) { |
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121 scr_LogPrint(LPRINT_LOGNORM, "Wrong file owner [%s]", name); |
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122 return 1; |
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123 } |
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124 |
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125 if (buf.st_mode & (S_IRGRP | S_IWGRP | S_IXGRP) || |
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126 buf.st_mode & (S_IROTH | S_IWOTH | S_IXOTH)) { |
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127 if (setmode) { |
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128 mode_t newmode = 0; |
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129 scr_LogPrint(LPRINT_LOGNORM, "Bad permissions [%s]", name); |
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130 if (S_ISDIR(buf.st_mode)) |
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131 newmode |= S_IXUSR; |
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132 newmode |= S_IRUSR | S_IWUSR; |
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133 if (chmod(name, newmode)) { |
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134 scr_LogPrint(LPRINT_LOGNORM, "WARNING: Failed to correct permissions!"); |
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135 return 1; |
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136 } |
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137 scr_LogPrint(LPRINT_LOGNORM, "Permissions have been corrected"); |
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138 } else { |
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139 scr_LogPrint(LPRINT_LOGNORM, "WARNING: Bad permissions [%s]", name); |
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140 return 1; |
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141 } |
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142 } |
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143 |
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144 return 0; |
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145 } |
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146 |
| 241 | 147 // to_iso8601(dststr, timestamp) |
| 148 // Convert timestamp to iso8601 format, and store it in dststr. | |
| 149 // NOTE: dststr should be at last 19 chars long. | |
| 150 // Return should be 0 | |
| 151 int to_iso8601(char *dststr, time_t timestamp) | |
| 152 { | |
| 153 struct tm *tm_time; | |
| 154 int ret; | |
| 155 | |
| 156 tm_time = gmtime(×tamp); | |
| 157 | |
| 158 ret = snprintf(dststr, 19, "%.4d%02d%02dT%02d:%02d:%02dZ", | |
| 159 1900+tm_time->tm_year, tm_time->tm_mon+1, tm_time->tm_mday, | |
| 160 tm_time->tm_hour, tm_time->tm_min, tm_time->tm_sec); | |
| 161 | |
| 162 return ((ret == -1) ? -1 : 0); | |
| 163 } | |
| 164 | |
| 165 // from_iso8601(timestamp, utc) | |
| 166 // This function comes from the Gaim project, gaim_str_to_time(). | |
| 167 // (Actually date may not be pure iso-8601) | |
| 168 // Thanks, guys! | |
| 169 time_t from_iso8601(const char *timestamp, int utc) | |
| 170 { | |
| 171 struct tm t; | |
| 172 time_t retval = 0; | |
| 173 char buf[32]; | |
| 174 char *c; | |
| 175 int tzoff = 0; | |
| 176 | |
| 177 time(&retval); | |
| 178 localtime_r(&retval, &t); | |
| 179 | |
| 180 snprintf(buf, sizeof(buf), "%s", timestamp); | |
| 181 c = buf; | |
| 182 | |
| 183 /* 4 digit year */ | |
| 184 if (!sscanf(c, "%04d", &t.tm_year)) return 0; | |
| 185 c+=4; | |
| 186 if (*c == '-') | |
| 187 c++; | |
| 188 | |
| 189 t.tm_year -= 1900; | |
| 190 | |
| 191 /* 2 digit month */ | |
| 192 if (!sscanf(c, "%02d", &t.tm_mon)) return 0; | |
| 193 c+=2; | |
| 194 if (*c == '-') | |
| 195 c++; | |
| 196 | |
| 197 t.tm_mon -= 1; | |
| 198 | |
| 199 /* 2 digit day */ | |
| 200 if (!sscanf(c, "%02d", &t.tm_mday)) return 0; | |
| 201 c+=2; | |
| 202 if (*c == 'T' || *c == '.') { /* we have more than a date, keep going */ | |
| 203 c++; /* skip the "T" */ | |
| 204 | |
| 205 /* 2 digit hour */ | |
| 206 if (sscanf(c, "%02d:%02d:%02d", &t.tm_hour, &t.tm_min, &t.tm_sec) == 3 || | |
| 207 sscanf(c, "%02d%02d%02d", &t.tm_hour, &t.tm_min, &t.tm_sec) == 3) { | |
| 208 int tzhrs, tzmins; | |
| 209 c+=8; | |
| 210 if (*c == '.') /* dealing with precision we don't care about */ | |
| 211 c += 4; | |
| 212 | |
| 213 if ((*c == '+' || *c == '-') && | |
| 214 sscanf(c+1, "%02d:%02d", &tzhrs, &tzmins)) { | |
| 215 tzoff = tzhrs*60*60 + tzmins*60; | |
| 216 if (*c == '+') | |
| 217 tzoff *= -1; | |
| 218 } | |
| 219 | |
| 220 if (tzoff || utc) { | |
| 221 | |
| 222 //#ifdef HAVE_TM_GMTOFF | |
| 223 tzoff += t.tm_gmtoff; | |
| 224 //#else | |
| 225 //# ifdef HAVE_TIMEZONE | |
| 226 // tzset(); /* making sure */ | |
| 227 // tzoff -= timezone; | |
| 228 //# endif | |
| 229 //#endif | |
| 230 } | |
| 231 } | |
| 232 } | |
| 233 | |
| 234 t.tm_isdst = -1; | |
| 235 | |
| 236 retval = mktime(&t); | |
| 237 | |
| 238 retval += tzoff; | |
| 239 | |
| 240 return retval; | |
| 241 } | |
| 419 | 242 |
| 243 // Should only be used for delays < 1s | |
| 244 inline void safe_usleep(unsigned int usec) | |
| 245 { | |
| 246 struct timespec req; | |
| 247 req.tv_sec = 0; | |
| 248 req.tv_nsec = (long)usec * 1000L; | |
| 249 nanosleep(&req, NULL); | |
| 250 } |