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nginx.xs
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nginx.xs
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/*
* Copyright (C) Igor Sysoev
* Copyright (C) Nginx, Inc.
*/
#define PERL_NO_GET_CONTEXT
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
#include <ngx_http_perl_module.h>
#include "XSUB.h"
#define ngx_http_perl_set_request(r) \
r = INT2PTR(ngx_http_request_t *, SvIV((SV *) SvRV(ST(0))))
#define ngx_http_perl_set_targ(p, len) \
\
SvUPGRADE(TARG, SVt_PV); \
SvPOK_on(TARG); \
sv_setpvn(TARG, (char *) p, len)
static ngx_int_t
ngx_http_perl_sv2str(pTHX_ ngx_http_request_t *r, ngx_str_t *s, SV *sv)
{
u_char *p;
STRLEN len;
if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PV) {
sv = SvRV(sv);
}
p = (u_char *) SvPV(sv, len);
s->len = len;
if (SvREADONLY(sv) && SvPOK(sv)) {
s->data = p;
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"perl sv2str: %08XD \"%V\"", sv->sv_flags, s);
return NGX_OK;
}
s->data = ngx_pnalloc(r->pool, len);
if (s->data == NULL) {
return NGX_ERROR;
}
ngx_memcpy(s->data, p, len);
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"perl sv2str: %08XD \"%V\"", sv->sv_flags, s);
return NGX_OK;
}
static ngx_int_t
ngx_http_perl_output(ngx_http_request_t *r, ngx_buf_t *b)
{
ngx_chain_t out;
#if (NGX_HTTP_SSI)
ngx_chain_t *cl;
ngx_http_perl_ctx_t *ctx;
ctx = ngx_http_get_module_ctx(r, ngx_http_perl_module);
if (ctx->ssi) {
cl = ngx_alloc_chain_link(r->pool);
if (cl == NULL) {
return NGX_ERROR;
}
cl->buf = b;
cl->next = NULL;
*ctx->ssi->last_out = cl;
ctx->ssi->last_out = &cl->next;
return NGX_OK;
}
#endif
out.buf = b;
out.next = NULL;
return ngx_http_output_filter(r, &out);
}
MODULE = nginx PACKAGE = nginx
void
status(r, code)
CODE:
ngx_http_request_t *r;
ngx_http_perl_set_request(r);
r->headers_out.status = SvIV(ST(1));
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"perl status: %d", r->headers_out.status);
XSRETURN_UNDEF;
void
send_http_header(r, ...)
CODE:
ngx_http_request_t *r;
SV *sv;
ngx_http_perl_set_request(r);
if (r->headers_out.status == 0) {
r->headers_out.status = NGX_HTTP_OK;
}
if (items != 1) {
sv = ST(1);
if (ngx_http_perl_sv2str(aTHX_ r, &r->headers_out.content_type, sv)
!= NGX_OK)
{
XSRETURN_EMPTY;
}
r->headers_out.content_type_len = r->headers_out.content_type.len;
} else {
if (ngx_http_set_content_type(r) != NGX_OK) {
XSRETURN_EMPTY;
}
}
(void) ngx_http_send_header(r);
void
header_only(r)
CODE:
dXSTARG;
ngx_http_request_t *r;
ngx_http_perl_set_request(r);
sv_upgrade(TARG, SVt_IV);
sv_setiv(TARG, r->header_only);
ST(0) = TARG;
void
uri(r)
CODE:
dXSTARG;
ngx_http_request_t *r;
ngx_http_perl_set_request(r);
ngx_http_perl_set_targ(r->uri.data, r->uri.len);
ST(0) = TARG;
void
args(r)
CODE:
dXSTARG;
ngx_http_request_t *r;
ngx_http_perl_set_request(r);
ngx_http_perl_set_targ(r->args.data, r->args.len);
ST(0) = TARG;
void
request_method(r)
CODE:
dXSTARG;
ngx_http_request_t *r;
ngx_http_perl_set_request(r);
ngx_http_perl_set_targ(r->method_name.data, r->method_name.len);
ST(0) = TARG;
void
remote_addr(r)
CODE:
dXSTARG;
ngx_http_request_t *r;
ngx_http_perl_set_request(r);
ngx_http_perl_set_targ(r->connection->addr_text.data,
r->connection->addr_text.len);
ST(0) = TARG;
void
header_in(r, key)
CODE:
dXSTARG;
ngx_http_request_t *r;
SV *key;
u_char *p, *lowcase_key, *value, sep;
STRLEN len;
ssize_t size;
ngx_uint_t i, n, hash;
ngx_array_t *a;
ngx_list_part_t *part;
ngx_table_elt_t *h, **ph;
ngx_http_header_t *hh;
ngx_http_core_main_conf_t *cmcf;
ngx_http_perl_set_request(r);
key = ST(1);
if (SvROK(key) && SvTYPE(SvRV(key)) == SVt_PV) {
key = SvRV(key);
}
p = (u_char *) SvPV(key, len);
/* look up hashed headers */
lowcase_key = ngx_pnalloc(r->pool, len);
if (lowcase_key == NULL) {
XSRETURN_UNDEF;
}
hash = ngx_hash_strlow(lowcase_key, p, len);
cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
hh = ngx_hash_find(&cmcf->headers_in_hash, hash, lowcase_key, len);
if (hh) {
if (hh->offset == offsetof(ngx_http_headers_in_t, cookies)) {
sep = ';';
goto multi;
}
#if (NGX_HTTP_X_FORWARDED_FOR)
if (hh->offset == offsetof(ngx_http_headers_in_t, x_forwarded_for)) {
sep = ',';
goto multi;
}
#endif
if (hh->offset) {
ph = (ngx_table_elt_t **) ((char *) &r->headers_in + hh->offset);
if (*ph) {
ngx_http_perl_set_targ((*ph)->value.data, (*ph)->value.len);
goto done;
}
XSRETURN_UNDEF;
}
multi:
/* Cookie, X-Forwarded-For */
a = (ngx_array_t *) ((char *) &r->headers_in + hh->offset);
n = a->nelts;
if (n == 0) {
XSRETURN_UNDEF;
}
ph = a->elts;
if (n == 1) {
ngx_http_perl_set_targ((*ph)->value.data, (*ph)->value.len);
goto done;
}
size = - (ssize_t) (sizeof("; ") - 1);
for (i = 0; i < n; i++) {
size += ph[i]->value.len + sizeof("; ") - 1;
}
value = ngx_pnalloc(r->pool, size);
if (value == NULL) {
XSRETURN_UNDEF;
}
p = value;
for (i = 0; /* void */ ; i++) {
p = ngx_copy(p, ph[i]->value.data, ph[i]->value.len);
if (i == n - 1) {
break;
}
*p++ = sep; *p++ = ' ';
}
ngx_http_perl_set_targ(value, size);
goto done;
}
/* iterate over all headers */
part = &r->headers_in.headers.part;
h = part->elts;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
break;
}
part = part->next;
h = part->elts;
i = 0;
}
if (len != h[i].key.len
|| ngx_strcasecmp(p, h[i].key.data) != 0)
{
continue;
}
ngx_http_perl_set_targ(h[i].value.data, h[i].value.len);
goto done;
}
XSRETURN_UNDEF;
done:
ST(0) = TARG;
void
has_request_body(r, next)
CODE:
dXSTARG;
ngx_http_request_t *r;
ngx_http_perl_ctx_t *ctx;
ngx_http_perl_set_request(r);
if (r->headers_in.content_length_n <= 0 && !r->headers_in.chunked) {
XSRETURN_UNDEF;
}
ctx = ngx_http_get_module_ctx(r, ngx_http_perl_module);
ctx->next = SvRV(ST(1));
r->request_body_in_single_buf = 1;
r->request_body_in_persistent_file = 1;
r->request_body_in_clean_file = 1;
if (r->request_body_in_file_only) {
r->request_body_file_log_level = 0;
}
ngx_http_read_client_request_body(r, ngx_http_perl_handle_request);
sv_upgrade(TARG, SVt_IV);
sv_setiv(TARG, 1);
ST(0) = TARG;
void
request_body(r)
CODE:
dXSTARG;
ngx_http_request_t *r;
u_char *p, *data;
size_t len;
ngx_buf_t *buf;
ngx_chain_t *cl;
ngx_http_perl_set_request(r);
if (r->request_body == NULL
|| r->request_body->temp_file
|| r->request_body->bufs == NULL)
{
XSRETURN_UNDEF;
}
cl = r->request_body->bufs;
buf = cl->buf;
if (cl->next == NULL) {
len = buf->last - buf->pos;
data = buf->pos;
goto done;
}
len = buf->last - buf->pos;
cl = cl->next;
for ( /* void */ ; cl; cl = cl->next) {
buf = cl->buf;
len += buf->last - buf->pos;
}
p = ngx_pnalloc(r->pool, len);
if (p == NULL) {
XSRETURN_UNDEF;
}
data = p;
cl = r->request_body->bufs;
for ( /* void */ ; cl; cl = cl->next) {
buf = cl->buf;
p = ngx_cpymem(p, buf->pos, buf->last - buf->pos);
}
done:
if (len == 0) {
XSRETURN_UNDEF;
}
ngx_http_perl_set_targ(data, len);
ST(0) = TARG;
void
request_body_file(r)
CODE:
dXSTARG;
ngx_http_request_t *r;
ngx_http_perl_set_request(r);
if (r->request_body == NULL || r->request_body->temp_file == NULL) {
XSRETURN_UNDEF;
}
ngx_http_perl_set_targ(r->request_body->temp_file->file.name.data,
r->request_body->temp_file->file.name.len);
ST(0) = TARG;
void
discard_request_body(r)
CODE:
ngx_http_request_t *r;
ngx_http_perl_set_request(r);
ngx_http_discard_request_body(r);
void
header_out(r, key, value)
CODE:
ngx_http_request_t *r;
SV *key;
SV *value;
ngx_table_elt_t *header;
ngx_http_perl_set_request(r);
key = ST(1);
value = ST(2);
header = ngx_list_push(&r->headers_out.headers);
if (header == NULL) {
XSRETURN_EMPTY;
}
header->hash = 1;
if (ngx_http_perl_sv2str(aTHX_ r, &header->key, key) != NGX_OK) {
XSRETURN_EMPTY;
}
if (ngx_http_perl_sv2str(aTHX_ r, &header->value, value) != NGX_OK) {
XSRETURN_EMPTY;
}
if (header->key.len == sizeof("Content-Length") - 1
&& ngx_strncasecmp(header->key.data, (u_char *) "Content-Length",
sizeof("Content-Length") - 1) == 0)
{
r->headers_out.content_length_n = (off_t) SvIV(value);
r->headers_out.content_length = header;
}
if (header->key.len == sizeof("Content-Encoding") - 1
&& ngx_strncasecmp(header->key.data, (u_char *) "Content-Encoding",
sizeof("Content-Encoding") - 1) == 0)
{
r->headers_out.content_encoding = header;
}
void
header_in_set(r, key, value)
CODE:
ngx_http_request_t *r;
SV *key;
SV *value;
ngx_str_t ngxkey;
ngx_str_t ngxvalue;
ngx_table_elt_t *header;
ngx_list_part_t *part, *last, *prev;
ngx_list_part_t *real_last, *prev_last;
ngx_table_elt_t *h;
ngx_uint_t i;
ngx_list_t *new_list;
ngx_table_elt_t *list_element;
ngx_http_perl_set_request(r);
key = ST(1);
value = ST(2);
ngx_err_t e;
e = SvIV(key);
prev_last = r->headers_in.headers.last;
/*
Find last part
*/
part = &r->headers_in.headers.part;
ngx_uint_t nb_part=0;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
// found last part, this is it!
real_last = part;
break;
}
i=0;
++nb_part;
part = part->next;
}
ngx_log_error(NGX_LOG_ERR, r->connection->log, e, "part: %d:%p / i: %d / key: %s / addr: %p", nb_part, part, i, (*((ngx_table_elt_t*)part->elts+i)).key.data, part->elts);
}
part = r->headers_in.headers.last;
nb_part=14457; // last in leet language
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
// found last part, this is it!
//r->headers_in.headers.last = part;
break;
}
i=0;
++nb_part;
part = part->next;
}
ngx_log_error(NGX_LOG_ERR, r->connection->log, e, "part: %d:%p / i: %d / key: %s / addr: %p", nb_part, part, i, (*((ngx_table_elt_t*)part->elts+i)).key.data, part->elts);
}
// Get header key as a string
if (ngx_http_perl_sv2str(aTHX_ r, &ngxkey, key) != NGX_OK) {
XSRETURN_EMPTY;
}
// Get header value as a string
if (ngx_http_perl_sv2str(aTHX_ r, &ngxvalue, value) != NGX_OK) {
XSRETURN_EMPTY;
}
// create a new header
header = ngx_list_push(&r->headers_in.headers);
if (header == NULL) {
XSRETURN_EMPTY;
}
if (ngx_http_perl_sv2str(aTHX_ r, &header->key, key) != NGX_OK) {
XSRETURN_EMPTY;
}
if (ngx_http_perl_sv2str(aTHX_ r, &header->value, value) != NGX_OK) {
XSRETURN_EMPTY;
}
if (header->value.len == 0) {
header->hash = 0;
} else {
header->hash = ngx_hash_key_lc(header->key.data, header->key.len);
}
header->lowcase_key = ngx_pnalloc(r->pool, header->key.len);
if (header->lowcase_key == NULL) {
XSRETURN_EMPTY;
}
ngx_strlow(header->lowcase_key, header->key.data, header->key.len);
part = &r->headers_in.headers.part;
last = r->headers_in.headers.last;
/* Hook to re-organize headers.
At first, headers_in.headers->last is a complete different part,
and its elements point to real last part one
not present in the chained part structure.
*/
if( real_last != last) { // last part is not in the chain
if(last->nelts == 1) { // new part was added
real_last->next = last;
}
else { // no new part, just fix nelts in current part
real_last->nelts = last->nelts;
}
}
ngx_log_error(NGX_LOG_ERR, r->connection->log, e, "SET - build nelts: %d for %s / last nelts: %d", part->nelts, header->key.data, last->nelts);
ngx_log_error(NGX_LOG_ERR, r->connection->log, e, "SET - part: %p / last: %p", part, last);
void
header_in_unset(r, key)
CODE:
ngx_http_request_t *r;
SV *key;
ngx_str_t ngxkey;
ngx_table_elt_t *header;
ngx_list_part_t *part, *last, *prev, *cur;
ngx_list_part_t *real_last;
ngx_table_elt_t *h;
ngx_uint_t i,j;
ngx_list_t *new_list;
ngx_table_elt_t *list_element;
ngx_http_perl_set_request(r);
key = ST(1);
ngx_err_t e;
e = SvIV(key);
/*
Find last part
*/
part = &r->headers_in.headers.part;
last = r->headers_in.headers.last;
ngx_uint_t nb_part=0;
for (i = 0; /* void */ ; i++) {
if (i >= part->nelts) {
if (part->next == NULL) {
// found last part, this is it!
real_last = part;
break;
}
i=0;
++nb_part;
part = part->next;
}
ngx_log_error(NGX_LOG_ERR, r->connection->log, e, "part: %d:%p / i: %d / key: %s / addr: %p", nb_part, part, i, (*((ngx_table_elt_t*)part->elts+i)).key.data, part->elts);
}
// Get header key as a string
if (ngx_http_perl_sv2str(aTHX_ r, &ngxkey, key) != NGX_OK) {
XSRETURN_EMPTY;
}
// Get the first part of the list. There is usually only one part.
part = &r->headers_in.headers.part;
h = part->elts;
/*
Headers list array may consist of more than one part,
so loop through all of it
*/
for (i = 0; /* void */ ; ++i) {
if (i >= part->nelts) {
if (part->next == NULL) {
/* The last part, search is done. */
break;
}
part = part->next;
h = part->elts;
i = 0;
}
ngx_log_error(NGX_LOG_ERR, r->connection->log, e, "UNSET - i: %d / nelts: %d / data: %s", i, part->nelts, h[i].key.data);
// Just compare the lengths and then the names case insensitively.
if (ngxkey.len == h[i].key.len && ngx_strcasecmp(ngxkey.data, h[i].key.data) == 0) {
/* This header matches and will not be added to new_list */
ngx_log_error(NGX_LOG_ERR, r->connection->log, e,
"UNSET - deleting header %s", ngxkey.data);
part = &r->headers_in.headers.part;
memcpy(&h[i],
(((ngx_table_elt_t*)real_last->elts)+(real_last->nelts-1)),
sizeof(ngx_table_elt_t));
--last->nelts;
// Hook to deal with last part
if( real_last != last) { // last part is not in the chain
--real_last->nelts;
ngx_log_error(NGX_LOG_ERR, r->connection->log, e, "UNSET - last part not in the chain");
}
if(last->nelts == 0) { // must delete last part
// ASSUMPTION: if we have to delete last part, then we have previously added
// enough parts so that last part is necessary in the chain
// find pre-last part
cur = &r->headers_in.headers.part;
prev = cur;
for (j = 0; /* void */ ; j++) {
if (cur->nelts == 0) {
// found last part, pre-last part is before
break;
}
prev = cur;
cur = cur->next;
}
ngx_log_error(NGX_LOG_ERR, r->connection->log, e, "UNSET - last: %p:%d / prev: %p:%d / cur: %p:%d", last, last->nelts, prev, prev->nelts, cur, cur->nelts);
prev->next = NULL;
last = prev;
r->headers_in.headers.last = prev;
}
}
}
void
filename(r)
CODE:
dXSTARG;
size_t root;
ngx_http_request_t *r;
ngx_http_perl_ctx_t *ctx;
ngx_http_perl_set_request(r);
ctx = ngx_http_get_module_ctx(r, ngx_http_perl_module);
if (ctx->filename.data) {
goto done;
}
if (ngx_http_map_uri_to_path(r, &ctx->filename, &root, 0) == NULL) {
XSRETURN_UNDEF;
}
ctx->filename.len--;
sv_setpv(PL_statname, (char *) ctx->filename.data);
done:
ngx_http_perl_set_targ(ctx->filename.data, ctx->filename.len);
ST(0) = TARG;
void
print(r, ...)
CODE:
ngx_http_request_t *r;
SV *sv;
int i;
u_char *p;
size_t size;
STRLEN len;
ngx_buf_t *b;
ngx_http_perl_set_request(r);
if (items == 2) {
/*
* do zero copy for prolate single read-only SV:
* $r->print("some text\n");
*/
sv = ST(1);
if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PV) {
sv = SvRV(sv);
}
if (SvREADONLY(sv) && SvPOK(sv)) {
p = (u_char *) SvPV(sv, len);
if (len == 0) {
XSRETURN_EMPTY;
}
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
XSRETURN_EMPTY;
}
b->memory = 1;
b->pos = p;
b->last = p + len;
b->start = p;
b->end = b->last;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"$r->print: read-only SV: %z", len);
goto out;
}
}
size = 0;
for (i = 1; i < items; i++) {
sv = ST(i);
if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PV) {
sv = SvRV(sv);
}
(void) SvPV(sv, len);
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"$r->print: copy SV: %z", len);
size += len;
}
if (size == 0) {
XSRETURN_EMPTY;
}
b = ngx_create_temp_buf(r->pool, size);
if (b == NULL) {
XSRETURN_EMPTY;
}
for (i = 1; i < items; i++) {
sv = ST(i);
if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PV) {
sv = SvRV(sv);
}
p = (u_char *) SvPV(sv, len);
b->last = ngx_cpymem(b->last, p, len);
}
out:
(void) ngx_http_perl_output(r, b);
void
sendfile(r, filename, offset = -1, bytes = 0)
CODE:
ngx_http_request_t *r;
char *filename;
off_t offset;
size_t bytes;
ngx_str_t path;
ngx_buf_t *b;
ngx_open_file_info_t of;
ngx_http_core_loc_conf_t *clcf;
ngx_http_perl_set_request(r);
filename = SvPV_nolen(ST(1));
if (filename == NULL) {
croak("sendfile(): NULL filename");
}
offset = items < 3 ? -1 : SvIV(ST(2));
bytes = items < 4 ? 0 : SvIV(ST(3));
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
XSRETURN_EMPTY;
}
b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
if (b->file == NULL) {
XSRETURN_EMPTY;
}
path.len = ngx_strlen(filename);
path.data = ngx_pnalloc(r->pool, path.len + 1);
if (path.data == NULL) {
XSRETURN_EMPTY;
}
(void) ngx_cpystrn(path.data, (u_char *) filename, path.len + 1);
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
ngx_memzero(&of, sizeof(ngx_open_file_info_t));
of.read_ahead = clcf->read_ahead;
of.directio = clcf->directio;
of.valid = clcf->open_file_cache_valid;
of.min_uses = clcf->open_file_cache_min_uses;
of.errors = clcf->open_file_cache_errors;
of.events = clcf->open_file_cache_events;
if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
XSRETURN_EMPTY;
}
if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
!= NGX_OK)
{
if (of.err == 0) {
XSRETURN_EMPTY;
}
ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
"%s \"%s\" failed", of.failed, filename);
XSRETURN_EMPTY;
}
if (offset == -1) {
offset = 0;
}
if (bytes == 0) {
bytes = of.size - offset;
}
b->in_file = 1;
b->file_pos = offset;
b->file_last = offset + bytes;
b->file->fd = of.fd;
b->file->log = r->connection->log;
b->file->directio = of.is_directio;
(void) ngx_http_perl_output(r, b);
void
flush(r)