Mercurial > hg > nginx-quic
view src/http/modules/perl/nginx.xs @ 5110:0bbdd966a383
Request body: next upstream fix.
After introduction of chunked request body handling in 1.3.9 (r4931),
r->request_body->bufs buffers have b->start pointing to original buffer
start (and b->pos pointing to real data of this particular buffer).
While this is ok as per se, it caused bad things (usually original request
headers included before the request body) after reinit of the request
chain in ngx_http_upstream_reinit() while sending the request to a next
upstream server (which used to do b->pos = b->start for each buffer
in the request chain).
Patch by Piotr Sikora.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 14 Mar 2013 12:28:53 +0000 |
parents | 95763fce86a8 |
children | 4d0ac175f6e4 |
line wrap: on
line source
/* * 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, *cookie; STRLEN len; ssize_t size; ngx_uint_t i, n, hash; 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) { 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; } /* Cookie */ n = r->headers_in.cookies.nelts; if (n == 0) { XSRETURN_UNDEF; } ph = r->headers_in.cookies.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; } cookie = ngx_pnalloc(r->pool, size); if (cookie == NULL) { XSRETURN_UNDEF; } p = cookie; for (i = 0; /* void */ ; i++) { p = ngx_copy(p, ph[i]->value.data, ph[i]->value.len); if (i == n - 1) { break; } *p++ = ';'; *p++ = ' '; } ngx_http_perl_set_targ(cookie, 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) { 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; size_t len; ngx_http_perl_set_request(r); if (r->request_body == NULL || r->request_body->temp_file || r->request_body->bufs == NULL) { XSRETURN_UNDEF; } len = r->request_body->bufs->buf->last - r->request_body->bufs->buf->pos; if (len == 0) { XSRETURN_UNDEF; } ngx_http_perl_set_targ(r->request_body->bufs->buf->pos, 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 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) CODE: ngx_http_request_t *r; ngx_buf_t *b; ngx_http_perl_set_request(r); b = ngx_calloc_buf(r->pool); if (b == NULL) { XSRETURN_EMPTY; } b->flush = 1; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "$r->flush"); (void) ngx_http_perl_output(r, b); XSRETURN_EMPTY; void internal_redirect(r, uri) CODE: ngx_http_request_t *r; SV *uri; ngx_uint_t i; ngx_http_perl_ctx_t *ctx; ngx_http_perl_set_request(r); uri = ST(1); ctx = ngx_http_get_module_ctx(r, ngx_http_perl_module); if (ngx_http_perl_sv2str(aTHX_ r, &ctx->redirect_uri, uri) != NGX_OK) { XSRETURN_EMPTY; } for (i = 0; i < ctx->redirect_uri.len; i++) { if (ctx->redirect_uri.data[i] == '?') { ctx->redirect_args.len = ctx->redirect_uri.len - (i + 1); ctx->redirect_args.data = &ctx->redirect_uri.data[i + 1]; ctx->redirect_uri.len = i; XSRETURN_EMPTY; } } void allow_ranges(r) CODE: ngx_http_request_t *r; ngx_http_perl_set_request(r); r->allow_ranges = 1; void unescape(r, text, type = 0) CODE: dXSTARG; ngx_http_request_t *r; SV *text; int type; u_char *p, *dst, *src; STRLEN len; ngx_http_perl_set_request(r); text = ST(1); src = (u_char *) SvPV(text, len); p = ngx_pnalloc(r->pool, len + 1); if (p == NULL) { XSRETURN_UNDEF; } dst = p; type = items < 3 ? 0 : SvIV(ST(2)); ngx_unescape_uri(&dst, &src, len, (ngx_uint_t) type); *dst = '\0'; ngx_http_perl_set_targ(p, dst - p); ST(0) = TARG; void variable(r, name, value = NULL) CODE: dXSTARG; ngx_http_request_t *r; SV *name, *value; u_char *p, *lowcase; STRLEN len; ngx_str_t var, val; ngx_uint_t i, hash; ngx_http_perl_var_t *v; ngx_http_perl_ctx_t *ctx; ngx_http_variable_value_t *vv; ngx_http_perl_set_request(r); name = ST(1); if (SvROK(name) && SvTYPE(SvRV(name)) == SVt_PV) { name = SvRV(name); } if (items == 2) { value = NULL; } else { value = ST(2); if (SvROK(value) && SvTYPE(SvRV(value)) == SVt_PV) { value = SvRV(value); } if (ngx_http_perl_sv2str(aTHX_ r, &val, value) != NGX_OK) { XSRETURN_UNDEF; } } p = (u_char *) SvPV(name, len); lowcase = ngx_pnalloc(r->pool, len); if (lowcase == NULL) { XSRETURN_UNDEF; } hash = ngx_hash_strlow(lowcase, p, len); var.len = len; var.data = lowcase; #if (NGX_DEBUG) if (value) { ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "perl variable: \"%V\"=\"%V\"", &var, &val); } else { ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "perl variable: \"%V\"", &var); } #endif vv = ngx_http_get_variable(r, &var, hash); if (vv == NULL) { XSRETURN_UNDEF; } if (vv->not_found) { ctx = ngx_http_get_module_ctx(r, ngx_http_perl_module); if (ctx->variables) { v = ctx->variables->elts; for (i = 0; i < ctx->variables->nelts; i++) { if (hash != v[i].hash || len != v[i].name.len || ngx_strncmp(lowcase, v[i].name.data, len) != 0) { continue; } if (value) { v[i].value = val; XSRETURN_UNDEF; } ngx_http_perl_set_targ(v[i].value.data, v[i].value.len); goto done; } } if (value) { if (ctx->variables == NULL) { ctx->variables = ngx_array_create(r->pool, 1, sizeof(ngx_http_perl_var_t)); if (ctx->variables == NULL) { XSRETURN_UNDEF; } } v = ngx_array_push(ctx->variables); if (v == NULL) { XSRETURN_UNDEF; } v->hash = hash; v->name.len = len; v->name.data = lowcase; v->value = val; XSRETURN_UNDEF; } XSRETURN_UNDEF; } if (value) { vv->len = val.len; vv->valid = 1; vv->no_cacheable = 0; vv->not_found = 0; vv->data = val.data; XSRETURN_UNDEF; } ngx_http_perl_set_targ(vv->data, vv->len); done: ST(0) = TARG; void sleep(r, sleep, next) CODE: ngx_http_request_t *r; ngx_msec_t sleep; ngx_http_perl_ctx_t *ctx; ngx_http_perl_set_request(r); sleep = (ngx_msec_t) SvIV(ST(1)); ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "perl sleep: %M", sleep); ctx = ngx_http_get_module_ctx(r, ngx_http_perl_module); ctx->next = SvRV(ST(2)); ngx_add_timer(r->connection->write, sleep); r->write_event_handler = ngx_http_perl_sleep_handler; r->main->count++; void log_error(r, err, msg) CODE: ngx_http_request_t *r; SV *err, *msg; u_char *p; STRLEN len; ngx_err_t e; ngx_http_perl_set_request(r); err = ST(1); if (SvROK(err) && SvTYPE(SvRV(err)) == SVt_PV) { err = SvRV(err); } e = SvIV(err); msg = ST(2); if (SvROK(msg) && SvTYPE(SvRV(msg)) == SVt_PV) { msg = SvRV(msg); } p = (u_char *) SvPV(msg, len); ngx_log_error(NGX_LOG_ERR, r->connection->log, e, "perl: %s", p);