Tristan Matthews | 0461646 | 2013-11-14 16:09:34 -0500 | [diff] [blame] | 1 | /************************************************* |
| 2 | * Perl-Compatible Regular Expressions * |
| 3 | *************************************************/ |
| 4 | |
| 5 | /* PCRE is a library of functions to support regular expressions whose syntax |
| 6 | and semantics are as close as possible to those of the Perl 5 language. |
| 7 | |
| 8 | Written by Philip Hazel |
| 9 | Copyright (c) 1997-2011 University of Cambridge |
| 10 | |
| 11 | ----------------------------------------------------------------------------- |
| 12 | Redistribution and use in source and binary forms, with or without |
| 13 | modification, are permitted provided that the following conditions are met: |
| 14 | |
| 15 | * Redistributions of source code must retain the above copyright notice, |
| 16 | this list of conditions and the following disclaimer. |
| 17 | |
| 18 | * Redistributions in binary form must reproduce the above copyright |
| 19 | notice, this list of conditions and the following disclaimer in the |
| 20 | documentation and/or other materials provided with the distribution. |
| 21 | |
| 22 | * Neither the name of the University of Cambridge nor the names of its |
| 23 | contributors may be used to endorse or promote products derived from |
| 24 | this software without specific prior written permission. |
| 25 | |
| 26 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 27 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 28 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 29 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 30 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 31 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 32 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 33 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 34 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 35 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 36 | POSSIBILITY OF SUCH DAMAGE. |
| 37 | ----------------------------------------------------------------------------- |
| 38 | */ |
| 39 | |
| 40 | |
| 41 | /* This module contains the external function pcre_fullinfo(), which returns |
| 42 | information about a compiled pattern. */ |
| 43 | |
| 44 | |
| 45 | #ifdef HAVE_CONFIG_H |
| 46 | #include "config.h" |
| 47 | #endif |
| 48 | |
| 49 | #include "pcre_internal.h" |
| 50 | |
| 51 | |
| 52 | /************************************************* |
| 53 | * Return info about compiled pattern * |
| 54 | *************************************************/ |
| 55 | |
| 56 | /* This is a newer "info" function which has an extensible interface so |
| 57 | that additional items can be added compatibly. |
| 58 | |
| 59 | Arguments: |
| 60 | argument_re points to compiled code |
| 61 | extra_data points extra data, or NULL |
| 62 | what what information is required |
| 63 | where where to put the information |
| 64 | |
| 65 | Returns: 0 if data returned, negative on error |
| 66 | */ |
| 67 | |
| 68 | PCRE_EXP_DEFN int PCRE_CALL_CONVENTION |
| 69 | pcre_fullinfo(const pcre *argument_re, const pcre_extra *extra_data, int what, |
| 70 | void *where) |
| 71 | { |
| 72 | real_pcre internal_re; |
| 73 | pcre_study_data internal_study; |
| 74 | const real_pcre *re = (const real_pcre *)argument_re; |
| 75 | const pcre_study_data *study = NULL; |
| 76 | |
| 77 | if (re == NULL || where == NULL) return PCRE_ERROR_NULL; |
| 78 | |
| 79 | if (extra_data != NULL && (extra_data->flags & PCRE_EXTRA_STUDY_DATA) != 0) |
| 80 | study = (const pcre_study_data *)extra_data->study_data; |
| 81 | |
| 82 | if (re->magic_number != MAGIC_NUMBER) |
| 83 | { |
| 84 | re = _pcre_try_flipped(re, &internal_re, study, &internal_study); |
| 85 | if (re == NULL) return PCRE_ERROR_BADMAGIC; |
| 86 | if (study != NULL) study = &internal_study; |
| 87 | } |
| 88 | |
| 89 | switch (what) |
| 90 | { |
| 91 | case PCRE_INFO_OPTIONS: |
| 92 | *((unsigned long int *)where) = re->options & PUBLIC_COMPILE_OPTIONS; |
| 93 | break; |
| 94 | |
| 95 | case PCRE_INFO_SIZE: |
| 96 | *((size_t *)where) = re->size; |
| 97 | break; |
| 98 | |
| 99 | case PCRE_INFO_STUDYSIZE: |
| 100 | *((size_t *)where) = (study == NULL)? 0 : study->size; |
| 101 | break; |
| 102 | |
| 103 | case PCRE_INFO_JITSIZE: |
| 104 | #ifdef SUPPORT_JIT |
| 105 | *((size_t *)where) = |
| 106 | (extra_data != NULL && |
| 107 | (extra_data->flags & PCRE_EXTRA_EXECUTABLE_JIT) != 0 && |
| 108 | extra_data->executable_jit != NULL)? |
| 109 | _pcre_jit_get_size(extra_data->executable_jit) : 0; |
| 110 | #else |
| 111 | *((size_t *)where) = 0; |
| 112 | #endif |
| 113 | |
| 114 | break; |
| 115 | |
| 116 | case PCRE_INFO_CAPTURECOUNT: |
| 117 | *((int *)where) = re->top_bracket; |
| 118 | break; |
| 119 | |
| 120 | case PCRE_INFO_BACKREFMAX: |
| 121 | *((int *)where) = re->top_backref; |
| 122 | break; |
| 123 | |
| 124 | case PCRE_INFO_FIRSTBYTE: |
| 125 | *((int *)where) = |
| 126 | ((re->flags & PCRE_FIRSTSET) != 0)? re->first_byte : |
| 127 | ((re->flags & PCRE_STARTLINE) != 0)? -1 : -2; |
| 128 | break; |
| 129 | |
| 130 | /* Make sure we pass back the pointer to the bit vector in the external |
| 131 | block, not the internal copy (with flipped integer fields). */ |
| 132 | |
| 133 | case PCRE_INFO_FIRSTTABLE: |
| 134 | *((const uschar **)where) = |
| 135 | (study != NULL && (study->flags & PCRE_STUDY_MAPPED) != 0)? |
| 136 | ((const pcre_study_data *)extra_data->study_data)->start_bits : NULL; |
| 137 | break; |
| 138 | |
| 139 | case PCRE_INFO_MINLENGTH: |
| 140 | *((int *)where) = |
| 141 | (study != NULL && (study->flags & PCRE_STUDY_MINLEN) != 0)? |
| 142 | study->minlength : -1; |
| 143 | break; |
| 144 | |
| 145 | case PCRE_INFO_JIT: |
| 146 | *((int *)where) = extra_data != NULL && |
| 147 | (extra_data->flags & PCRE_EXTRA_EXECUTABLE_JIT) != 0 && |
| 148 | extra_data->executable_jit != NULL; |
| 149 | break; |
| 150 | |
| 151 | case PCRE_INFO_LASTLITERAL: |
| 152 | *((int *)where) = |
| 153 | ((re->flags & PCRE_REQCHSET) != 0)? re->req_byte : -1; |
| 154 | break; |
| 155 | |
| 156 | case PCRE_INFO_NAMEENTRYSIZE: |
| 157 | *((int *)where) = re->name_entry_size; |
| 158 | break; |
| 159 | |
| 160 | case PCRE_INFO_NAMECOUNT: |
| 161 | *((int *)where) = re->name_count; |
| 162 | break; |
| 163 | |
| 164 | case PCRE_INFO_NAMETABLE: |
| 165 | *((const uschar **)where) = (const uschar *)re + re->name_table_offset; |
| 166 | break; |
| 167 | |
| 168 | case PCRE_INFO_DEFAULT_TABLES: |
| 169 | *((const uschar **)where) = (const uschar *)(_pcre_default_tables); |
| 170 | break; |
| 171 | |
| 172 | /* From release 8.00 this will always return TRUE because NOPARTIAL is |
| 173 | no longer ever set (the restrictions have been removed). */ |
| 174 | |
| 175 | case PCRE_INFO_OKPARTIAL: |
| 176 | *((int *)where) = (re->flags & PCRE_NOPARTIAL) == 0; |
| 177 | break; |
| 178 | |
| 179 | case PCRE_INFO_JCHANGED: |
| 180 | *((int *)where) = (re->flags & PCRE_JCHANGED) != 0; |
| 181 | break; |
| 182 | |
| 183 | case PCRE_INFO_HASCRORLF: |
| 184 | *((int *)where) = (re->flags & PCRE_HASCRORLF) != 0; |
| 185 | break; |
| 186 | |
| 187 | default: return PCRE_ERROR_BADOPTION; |
| 188 | } |
| 189 | |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | /* End of pcre_fullinfo.c */ |