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#if defined(UWSGI_PCRE) || defined(UWSGI_PCRE2)
#include "uwsgi.h"
extern struct uwsgi_server uwsgi;
void uwsgi_opt_pcre_jit(char *opt, char *value, void *foobar) {
#if defined(PCRE_STUDY_JIT_COMPILE) && defined(PCRE_CONFIG_JIT)
int has_jit = 0, ret;
ret = pcre_config(PCRE_CONFIG_JIT, &has_jit);
if (ret != 0 || has_jit != 1)
return;
uwsgi.pcre_jit = PCRE_STUDY_JIT_COMPILE;
#elif defined(PCRE2_CONFIG_JIT)
int has_jit = 0, ret;
ret = pcre2_config(PCRE2_CONFIG_JIT, &has_jit);
if (ret != 0)
return;
uwsgi.pcre_jit = has_jit;
#endif
}
int uwsgi_regexp_build(char *re, uwsgi_pcre ** pattern) {
#ifdef UWSGI_PCRE2
int errnbr;
size_t erroff;
*pattern = pcre2_compile((const unsigned char *) re, PCRE2_ZERO_TERMINATED, 0, &errnbr, &erroff, NULL);
#else
const char *errstr;
int erroff;
*pattern = uwsgi_malloc(sizeof(uwsgi_pcre));
(*pattern)->p = pcre_compile((const char *) re, 0, &errstr, &erroff, NULL);
#endif
#ifdef UWSGI_PCRE2
if (!(*pattern)) {
uwsgi_log("pcre error: code %d at offset %d\n", errnbr, erroff);
#else
if (!((*pattern)->p)) {
uwsgi_log("pcre error: %s at offset %d\n", errstr, erroff);
#endif
return -1;
}
#ifdef UWSGI_PCRE2
if (uwsgi.pcre_jit) {
errnbr = pcre2_jit_compile(*pattern, PCRE2_JIT_COMPLETE);
if (errnbr) {
pcre2_code_free(*pattern);
uwsgi_log("pcre JIT compile error code %d\n", errnbr);
return -1;
}
#else
int opt = uwsgi.pcre_jit;
(*pattern)->extra = (pcre_extra *) pcre_study((const pcre *) (*pattern)->p, opt, &errstr);
if ((*pattern)->extra == NULL && errstr != NULL) {
pcre_free((*pattern)->p);
free(*pattern);
uwsgi_log("pcre (study) error: %s\n", errstr);
return -1;
#endif
}
return 0;
}
int uwsgi_regexp_match(uwsgi_pcre *pattern, const char *subject, int length) {
#ifdef UWSGI_PCRE2
return uwsgi_regexp_match_ovec(pattern, subject, length, NULL, 0);
#else
return pcre_exec((const pcre *) pattern->p, (const pcre_extra *) pattern->extra, subject, length, 0, 0, NULL, 0);
#endif
}
int uwsgi_regexp_match_ovec(uwsgi_pcre *pattern, const char *subject, int length, int *ovec, int n) {
#ifdef UWSGI_PCRE2
int rc;
int i;
pcre2_match_data *match_data;
size_t *pcre2_ovec;
match_data = pcre2_match_data_create_from_pattern(pattern, NULL);
rc = pcre2_match(pattern, (const unsigned char *)subject, length, 0, 0, match_data, NULL);
/*
* Quoting PCRE{,2} spec, "The first pair of integers, ovector[0]
* and ovector[1], identify the portion of the subject string matched
* by the entire pattern. The next pair is used for the first capturing
* subpattern, and so on." Therefore, the ovector size is the number of
* capturing subpatterns (INFO_CAPTURECOUNT), from uwsgi_regexp_ovector(),
* as matching pairs, plus room for the first pair.
*/
if (n > 0) {
// copy pcre2 output vector to uwsgi output vector
pcre2_ovec = pcre2_get_ovector_pointer(match_data);
for (i=0;i<(n+1)*2;i++) {
ovec[i] = pcre2_ovec[i];
}
#else
if (n > 0) {
return pcre_exec((const pcre *) pattern->p, (const pcre_extra *) pattern->extra, subject, length, 0, 0, ovec, PCRE_OVECTOR_BYTESIZE(n));
#endif
}
#ifdef UWSGI_PCRE2
pcre2_match_data_free(match_data);
return rc;
#else
return pcre_exec((const pcre *) pattern->p, (const pcre_extra *) pattern->extra, subject, length, 0, 0, NULL, 0);
#endif
}
int uwsgi_regexp_ovector(const uwsgi_pcre *pattern) {
int n;
#ifdef UWSGI_PCRE2
if (pcre2_pattern_info(pattern, PCRE2_INFO_CAPTURECOUNT, &n))
#else
if (pcre_fullinfo((const pcre *) pattern->p, (const pcre_extra *) pattern->extra, PCRE_INFO_CAPTURECOUNT, &n))
#endif
return 0;
return n;
}
char *uwsgi_regexp_apply_ovec(char *src, int src_n, char *dst, int dst_n, int *ovector, int n) {
int i;
int dollar = 0;
size_t dollars = n;
for(i=0;i<dst_n;i++) {
if (dst[i] == '$') {
dollars++;
}
}
char *res = uwsgi_malloc(dst_n + (src_n * dollars) + 1);
char *ptr = res;
for (i = 0; i < dst_n; i++) {
if (dollar) {
if (isdigit((int) dst[i])) {
int pos = (dst[i] - 48);
if (pos <= n) {
pos = pos * 2;
memcpy(ptr, src + ovector[pos], ovector[pos + 1] - ovector[pos]);
ptr += ovector[pos + 1] - ovector[pos];
}
}
else {
*ptr++ = '$';
*ptr++ = dst[i];
}
dollar = 0;
}
else {
if (dst[i] == '$') {
dollar = 1;
}
else {
*ptr++ = dst[i];
}
}
}
*ptr++ = 0;
return res;
}
#endif
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