src/format/Quoting.cc

   1 #include "squid.h"
   2 #include "format/Quoting.h"
   3
   4 static const char c2x[] =
   5     "000102030405060708090a0b0c0d0e0f"
   6     "101112131415161718191a1b1c1d1e1f"
   7     "202122232425262728292a2b2c2d2e2f"
   8     "303132333435363738393a3b3c3d3e3f"
   9     "404142434445464748494a4b4c4d4e4f"
  10     "505152535455565758595a5b5c5d5e5f"
  11     "606162636465666768696a6b6c6d6e6f"
  12     "707172737475767778797a7b7c7d7e7f"
  13     "808182838485868788898a8b8c8d8e8f"
  14     "909192939495969798999a9b9c9d9e9f"
  15     "a0a1a2a3a4a5a6a7a8a9aaabacadaeaf"
  16     "b0b1b2b3b4b5b6b7b8b9babbbcbdbebf"
  17     "c0c1c2c3c4c5c6c7c8c9cacbcccdcecf"
  18     "d0d1d2d3d4d5d6d7d8d9dadbdcdddedf"
  19     "e0e1e2e3e4e5e6e7e8e9eaebecedeeef"
  20     "f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff";
  21
  22 #if DEAD_USING_QUOTEMIMEBLOB
  23 /** copy of Log::QuoteMimeBlob. Bugs there will be found here.
  24  * This omits [] characters but is otherwise identical to Log::QuoteMimeBlob when OLD_LOG_MIME = 1
  25  */
  26 static char *
  27 username_quote(const char *header)
  28 {
  29     int c;
  30     int i;
  31     char *buf;
  32     char *buf_cursor;
  33
  34     if (header == NULL) {
  35         buf = static_cast<char *>(xcalloc(1, 1));
  36         *buf = '\0';
  37         return buf;
  38     }
  39
  40     buf = static_cast<char *>(xcalloc(1, (strlen(header) * 3) + 1));
  41     buf_cursor = buf;
  42     /*
  43      * We escape: space \x00-\x1F and space (0x40) and \x7F-\xFF
  44      * to prevent garbage in the logs. CR and LF are also there just in case.
  45      */
  46
  47     while ((c = *(const unsigned char *) header++) != '\0') {
  48         if (c == '\r') {
  49             *buf_cursor++ = '\\';
  50             *buf_cursor++ = 'r';
  51         } else if (c == '\n') {
  52             *buf_cursor++ = '\\';
  53             *buf_cursor++ = 'n';
  54         } else if (c <= 0x1F
  55                    || c >= 0x7F
  56                    || c == '%'
  57                    || c == ' ') {
  58             *buf_cursor++ = '%';
  59             i = c * 2;
  60             *buf_cursor++ = c2x[i];
  61             *buf_cursor++ = c2x[i + 1];
  62         } else {
  63             *buf_cursor++ = (char) c;
  64         }
  65     }
  66
  67     *buf_cursor = '\0';
  68     return buf;
  69 }
  70 #endif // DEAD
  71
  72 char *
  73 Format::QuoteUrlEncodeUsername(const char *name)
  74 {
  75     if (NULL == name)
  76         return NULL;
  77
  78     if (name[0] == '\0')
  79         return NULL;
  80
  81     return QuoteMimeBlob(name);
  82 //    return username_quote(name);
  83 }
  84
  85 char *
  86 Format::QuoteMimeBlob(const char *header)
  87 {
  88     int c;
  89     int i;
  90     char *buf;
  91     char *buf_cursor;
  92
  93     if (header == NULL) {
  94         buf = static_cast<char *>(xcalloc(1, 1));
  95         *buf = '\0';
  96         return buf;
  97     }
  98
  99     buf = static_cast<char *>(xcalloc(1, (strlen(header) * 3) + 1));
 100     buf_cursor = buf;
 101     /**
 102      * Whe OLD_LOG_MIME is defined we escape: \x00-\x1F"#%;<>?{}|\\\\^~`\[\]\x7F-\xFF
 103      * which is the default escape list for the CPAN Perl5 URI module
 104      * modulo the inclusion of space (x40) to make the raw logs a bit
 105      * more readable.
 106      */
 107
 108     while ((c = *(const unsigned char *) header++) != '\0') {
 109 #if !OLD_LOG_MIME
 110         if (c == '\r') {
 111             *buf_cursor++ = '\\';
 112             *buf_cursor++ = 'r';
 113         } else if (c == '\n') {
 114             *buf_cursor++ = '\\';
 115             *buf_cursor++ = 'n';
 116         } else
 117 #endif
 118             if (c <= 0x1F
 119                     || c >= 0x7F
 120                     || c == '%'
 121 #if OLD_LOG_MIME
 122                     || c == '"'
 123                     || c == '#'
 124                     || c == ';'
 125                     || c == '<'
 126                     || c == '>'
 127                     || c == '?'
 128                     || c == '{'
 129                     || c == '}'
 130                     || c == '|'
 131                     || c == '\\'
 132                     || c == '^'
 133                     || c == '~'
 134                     || c == '`'
 135 #endif
 136                     || c == '['
 137                     || c == ']') {
 138                 *buf_cursor++ = '%';
 139                 i = c * 2;
 140                 *buf_cursor++ = c2x[i];
 141                 *buf_cursor++ = c2x[i + 1];
 142 #if !OLD_LOG_MIME
 143
 144             } else if (c == '\\') {
 145                 *buf_cursor++ = '\\';
 146                 *buf_cursor++ = '\\';
 147 #endif
 148
 149             } else {
 150                 *buf_cursor++ = (char) c;
 151             }
 152     }
 153
 154     *buf_cursor = '\0';
 155     return buf;
 156 }