1 #include "first.h" 2 3 #include "array.h" 4 #include "configfile.h" 5 6 #include <string.h> 7 #include <stdlib.h> 8 9 #ifdef HAVE_PCRE_H 10 #include <pcre.h> 11 #ifndef PCRE_STUDY_JIT_COMPILE 12 #define PCRE_STUDY_JIT_COMPILE 0 13 #define pcre_free_study(x) pcre_free(x) 14 #endif 15 #endif 16 17 __attribute_cold__ 18 static data_unset *data_config_copy(const data_unset *s) { 19 data_config *src = (data_config *)s; 20 data_config *ds = data_config_init(); 21 22 ds->comp = src->comp; 23 if (!buffer_is_unset(&src->key)) { 24 buffer_copy_buffer(&ds->key, &src->key); 25 ds->comp_key = ds->key.ptr + (src->comp_key - src->key.ptr); 26 } 27 buffer_copy_buffer(&ds->comp_tag, &src->comp_tag); 28 array_copy_array(ds->value, src->value); 29 return (data_unset *)ds; 30 } 31 32 __attribute_cold__ 33 static void data_config_free(data_unset *d) { 34 data_config *ds = (data_config *)d; 35 36 free(ds->key.ptr); 37 free(ds->comp_tag.ptr); 38 39 array_free(ds->value); 40 vector_config_weak_clear(&ds->children); 41 42 free(ds->string.ptr); 43 #ifdef HAVE_PCRE_H 44 if (ds->regex) pcre_free(ds->regex); 45 if (ds->regex_study) pcre_free_study(ds->regex_study); 46 #endif 47 48 free(d); 49 } 50 51 data_config *data_config_init(void) { 52 static const struct data_methods fn = { 53 data_config_copy, 54 data_config_free, 55 NULL 56 }; 57 data_config *ds; 58 59 ds = calloc(1, sizeof(*ds)); 60 force_assert(ds); 61 62 ds->comp_key = ""; 63 ds->value = array_init(4); 64 vector_config_weak_init(&ds->children); 65 66 ds->type = TYPE_CONFIG; 67 ds->fn = &fn; 68 69 return ds; 70 } 71 72 #include "log.h" 73 74 int data_config_pcre_compile(data_config * const dc, const int pcre_jit, log_error_st * const errh) { 75 #ifdef HAVE_PCRE_H 76 const char *errptr; 77 int erroff, captures; 78 79 dc->regex = pcre_compile(dc->string.ptr, 0, &errptr, &erroff, NULL); 80 if (NULL == dc->regex) { 81 log_error(errh, __FILE__, __LINE__, 82 "parsing regex failed: %s -> %s at offset %d\n", 83 dc->string.ptr, errptr, erroff); 84 return 0; 85 } 86 87 const int study_options = pcre_jit ? PCRE_STUDY_JIT_COMPILE : 0; 88 dc->regex_study = pcre_study(dc->regex, study_options, &errptr); 89 if (NULL == dc->regex_study && errptr != NULL) { 90 log_error(errh, __FILE__, __LINE__, 91 "studying regex failed: %s -> %s\n", 92 dc->string.ptr, errptr); 93 return 0; 94 } 95 96 erroff = pcre_fullinfo(dc->regex, dc->regex_study, PCRE_INFO_CAPTURECOUNT, 97 &captures); 98 if (0 != erroff) { 99 log_error(errh, __FILE__, __LINE__, 100 "getting capture count for regex failed: %s\n", 101 dc->string.ptr); 102 return 0; 103 } 104 else if (captures > 9) { 105 log_error(errh, __FILE__, __LINE__, 106 "Too many captures in regex, use (?:...) instead of (...): %s\n", 107 dc->string.ptr); 108 return 0; 109 } 110 return 1; 111 #else 112 UNUSED(pcre_jit); 113 log_error(errh, __FILE__, __LINE__, 114 "can't handle '%s' as you compiled without pcre support. \n" 115 "(perhaps just a missing pcre-devel package ?) \n", 116 dc->comp_key); 117 return 0; 118 #endif 119 } 120