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fix: add PCRE2 capability to standalone module

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This commit is contained in:
Ervin Hegedus 2025-05-10 11:44:42 +02:00
parent 1a2de10b34
commit eaba30f1c7
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GPG Key ID: 5FA5BC3F5EC41F61
1 changed files with 237 additions and 162 deletions
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75
standalone/regex.c
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@ -61,7 +61,11 @@ AP_DECLARE(ap_regex_t *) ap_pregcomp(apr_pool_t *p, const char *pattern,
AP_DECLARE(void) ap_regfree(ap_regex_t *preg)
{
#ifdef WITH_PCRE2
(pcre2_code_free)(preg->re_pcre);
#else
(pcre_free)(preg->re_pcre);
#endif
}
AP_DECLARE(int) ap_regcomp(ap_regex_t *preg, const char *pattern, int cflags)
@ -71,6 +75,23 @@ int erroffset;
int options = 0;
int nsub = 0;
#ifdef WITH_PCRE2
if ((cflags & AP_REG_ICASE) != 0) options |= PCRE2_CASELESS;
if ((cflags & AP_REG_NEWLINE) != 0) options |= PCRE2_MULTILINE;
int error_number = 0;
PCRE2_SIZE error_offset = 0;
PCRE2_SPTR pcre2_pattern = (PCRE2_SPTR)pattern;
preg->re_pcre = pcre2_compile(pcre2_pattern, PCRE2_ZERO_TERMINATED,
options, &error_number, &error_offset, NULL);
preg->re_erroffset = error_offset;
if (preg->re_pcre == NULL) return AP_REG_INVARG;
pcre2_pattern_info((const pcre2_code *)preg->re_pcre, PCRE2_INFO_CAPTURECOUNT, &nsub);
preg->re_nsub = nsub;
#else
if ((cflags & AP_REG_ICASE) != 0) options |= PCRE_CASELESS;
if ((cflags & AP_REG_NEWLINE) != 0) options |= PCRE_MULTILINE;
@ -81,6 +102,7 @@ if (preg->re_pcre == NULL) return AP_REG_INVARG;
pcre_fullinfo((const pcre *)preg->re_pcre, NULL, PCRE_INFO_CAPTURECOUNT, &nsub);
preg->re_nsub = nsub;
#endif // end of WITH_PCRE
return 0;
}
@ -98,8 +120,13 @@ int *ovector = NULL;
int small_ovector[POSIX_MALLOC_THRESHOLD * 3];
int allocated_ovector = 0;
#ifdef WITH_PCRE2
if ((eflags & AP_REG_NOTBOL) != 0) options |= PCRE2_NOTBOL;
if ((eflags & AP_REG_NOTEOL) != 0) options |= PCRE2_NOTEOL;
#else
if ((eflags & AP_REG_NOTBOL) != 0) options |= PCRE_NOTBOL;
if ((eflags & AP_REG_NOTEOL) != 0) options |= PCRE_NOTEOL;
#endif
((ap_regex_t *)preg)->re_erroffset = (apr_size_t)(-1); /* Only has meaning after compile */
@ -117,8 +144,38 @@ if (nmatch > 0)
}
}
#ifdef WITH_PCRE2
{
PCRE2_SPTR pcre2_s;
int pcre2_ret;
pcre2_match_data *match_data;
PCRE2_SIZE *pcre2_ovector = NULL;
pcre2_s = (PCRE2_SPTR)string;
match_data = pcre2_match_data_create_from_pattern(preg->re_pcre, NULL);
pcre2_match_context *match_context = pcre2_match_context_create(NULL);
pcre2_ret = pcre2_match((const pcre2_code *)preg->re_pcre, pcre2_s, (int)strlen(string),
0, (uint32_t)options, match_data, match_context);
if (match_data != NULL) {
pcre2_ovector = pcre2_get_ovector_pointer(match_data);
if (pcre2_ovector != NULL) {
for (int i = 0; ((i < pcre2_ret) && ((i*2) <= nmatch * 3)); i++) {
if ((i*2) < nmatch * 3) {
ovector[2*i] = pcre2_ovector[2*i];
ovector[2*i+1] = pcre2_ovector[2*i+1];
}
}
}
pcre2_match_data_free(match_data);
pcre2_match_context_free(match_context);
}
}
#else
rc = pcre_exec((const pcre *)preg->re_pcre, NULL, string, (int)strlen(string),
0, options, ovector, nmatch * 3);
#endif
if (rc == 0) rc = nmatch; /* All captured slots were filled in */
@ -140,6 +197,23 @@ else
if (allocated_ovector) free(ovector);
switch(rc)
{
#ifdef WITH_PCRE2
case PCRE2_ERROR_NOMATCH: return AP_REG_NOMATCH;
case PCRE2_ERROR_NULL: return AP_REG_INVARG;
case PCRE2_ERROR_BADOPTION: return AP_REG_INVARG;
case PCRE2_ERROR_BADMAGIC: return AP_REG_INVARG;
// case PCRE2_ERROR_UNKNOWN_NODE: return AP_REG_ASSERT; not defined in PCRE2
case PCRE2_ERROR_NOMEMORY: return AP_REG_ESPACE;
#ifdef PCRE2_ERROR_MATCHLIMIT
case PCRE2_ERROR_MATCHLIMIT: return AP_REG_ESPACE;
#endif
#ifdef PCRE2_ERROR_BADUTF8
case PCRE2_ERROR_BADUTF8: return AP_REG_INVARG;
#endif
#ifdef PCRE2_ERROR_BADUTF8_OFFSET
case PCRE2_ERROR_BADUTF8_OFFSET: return AP_REG_INVARG;
#endif
#else // with old PCRE
case PCRE_ERROR_NOMATCH: return AP_REG_NOMATCH;
case PCRE_ERROR_NULL: return AP_REG_INVARG;
case PCRE_ERROR_BADOPTION: return AP_REG_INVARG;
@ -155,6 +229,7 @@ else
#ifdef PCRE_ERROR_BADUTF8_OFFSET
case PCRE_ERROR_BADUTF8_OFFSET: return AP_REG_INVARG;
#endif
#endif // end of WITH_PCRE
default: return AP_REG_ASSERT;
}
}