Mercurial > hg > nginx
view src/http/modules/perl/ngx_http_perl_module.c @ 7281:bd6563e81cea
Limit req: improved handling of negative times.
Negative times can appear since workers only update time on an event
loop iteration start. If a worker was blocked for a long time during
an event loop iteration, it is possible that another worker already
updated the time stored in the node. As such, time since last update
of the node (ms) will be negative.
Previous code used ngx_abs(ms) in the calculations. That is, negative
times were effectively treated as positive ones. As a result, it was
not possible to maintain high request rates, where the same node can be
updated multiple times from during an event loop iteration.
In particular, this affected setups with many SSL handshakes, see
http://mailman.nginx.org/pipermail/nginx/2018-May/056291.html.
Fix is to only update the last update time stored in the node if the
new time is larger than previously stored one. If a future time is
stored in the node, we preserve this time as is.
To prevent breaking things on platforms without monotonic time available
if system time is updated backwards, a safety limit of 60 seconds is
used. If the time stored in the node is more than 60 seconds in the future,
we assume that the time was changed backwards and update lr->last
to the current time.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Wed, 30 May 2018 15:40:34 +0300 |
parents | 903fb1ddc07f |
children | 919a5c6c828c |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> #include <ngx_http_perl_module.h> typedef struct { PerlInterpreter *perl; HV *nginx; ngx_array_t *modules; ngx_array_t *requires; } ngx_http_perl_main_conf_t; typedef struct { SV *sub; ngx_str_t handler; } ngx_http_perl_loc_conf_t; typedef struct { SV *sub; ngx_str_t handler; } ngx_http_perl_variable_t; #if (NGX_HTTP_SSI) static ngx_int_t ngx_http_perl_ssi(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ssi_ctx, ngx_str_t **params); #endif static char *ngx_http_perl_init_interpreter(ngx_conf_t *cf, ngx_http_perl_main_conf_t *pmcf); static PerlInterpreter *ngx_http_perl_create_interpreter(ngx_conf_t *cf, ngx_http_perl_main_conf_t *pmcf); static ngx_int_t ngx_http_perl_run_requires(pTHX_ ngx_array_t *requires, ngx_log_t *log); static ngx_int_t ngx_http_perl_call_handler(pTHX_ ngx_http_request_t *r, HV *nginx, SV *sub, SV **args, ngx_str_t *handler, ngx_str_t *rv); static void ngx_http_perl_eval_anon_sub(pTHX_ ngx_str_t *handler, SV **sv); static ngx_int_t ngx_http_perl_preconfiguration(ngx_conf_t *cf); static void *ngx_http_perl_create_main_conf(ngx_conf_t *cf); static char *ngx_http_perl_init_main_conf(ngx_conf_t *cf, void *conf); static void *ngx_http_perl_create_loc_conf(ngx_conf_t *cf); static char *ngx_http_perl_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child); static char *ngx_http_perl(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_http_perl_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); #if (NGX_HAVE_PERL_MULTIPLICITY) static void ngx_http_perl_cleanup_perl(void *data); #endif static ngx_int_t ngx_http_perl_init_worker(ngx_cycle_t *cycle); static void ngx_http_perl_exit(ngx_cycle_t *cycle); static ngx_command_t ngx_http_perl_commands[] = { { ngx_string("perl_modules"), NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_array_slot, NGX_HTTP_MAIN_CONF_OFFSET, offsetof(ngx_http_perl_main_conf_t, modules), NULL }, { ngx_string("perl_require"), NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1, ngx_conf_set_str_array_slot, NGX_HTTP_MAIN_CONF_OFFSET, offsetof(ngx_http_perl_main_conf_t, requires), NULL }, { ngx_string("perl"), NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_CONF_TAKE1, ngx_http_perl, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL }, { ngx_string("perl_set"), NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE2, ngx_http_perl_set, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL }, ngx_null_command }; static ngx_http_module_t ngx_http_perl_module_ctx = { ngx_http_perl_preconfiguration, /* preconfiguration */ NULL, /* postconfiguration */ ngx_http_perl_create_main_conf, /* create main configuration */ ngx_http_perl_init_main_conf, /* init main configuration */ NULL, /* create server configuration */ NULL, /* merge server configuration */ ngx_http_perl_create_loc_conf, /* create location configuration */ ngx_http_perl_merge_loc_conf /* merge location configuration */ }; ngx_module_t ngx_http_perl_module = { NGX_MODULE_V1, &ngx_http_perl_module_ctx, /* module context */ ngx_http_perl_commands, /* module directives */ NGX_HTTP_MODULE, /* module type */ NULL, /* init master */ NULL, /* init module */ ngx_http_perl_init_worker, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ ngx_http_perl_exit, /* exit master */ NGX_MODULE_V1_PADDING }; #if (NGX_HTTP_SSI) #define NGX_HTTP_PERL_SSI_SUB 0 #define NGX_HTTP_PERL_SSI_ARG 1 static ngx_http_ssi_param_t ngx_http_perl_ssi_params[] = { { ngx_string("sub"), NGX_HTTP_PERL_SSI_SUB, 1, 0 }, { ngx_string("arg"), NGX_HTTP_PERL_SSI_ARG, 0, 1 }, { ngx_null_string, 0, 0, 0 } }; static ngx_http_ssi_command_t ngx_http_perl_ssi_command = { ngx_string("perl"), ngx_http_perl_ssi, ngx_http_perl_ssi_params, 0, 0, 1 }; #endif static ngx_str_t ngx_null_name = ngx_null_string; static HV *nginx_stash; #if (NGX_HAVE_PERL_MULTIPLICITY) static ngx_uint_t ngx_perl_term; #else static PerlInterpreter *perl; #endif static void ngx_http_perl_xs_init(pTHX) { newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, __FILE__); nginx_stash = gv_stashpv("nginx", TRUE); } static ngx_int_t ngx_http_perl_handler(ngx_http_request_t *r) { r->main->count++; ngx_http_perl_handle_request(r); return NGX_DONE; } void ngx_http_perl_handle_request(ngx_http_request_t *r) { SV *sub; ngx_int_t rc; ngx_str_t uri, args, *handler; ngx_http_perl_ctx_t *ctx; ngx_http_perl_loc_conf_t *plcf; ngx_http_perl_main_conf_t *pmcf; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "perl handler"); ctx = ngx_http_get_module_ctx(r, ngx_http_perl_module); if (ctx == NULL) { ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_perl_ctx_t)); if (ctx == NULL) { ngx_http_finalize_request(r, NGX_ERROR); return; } ngx_http_set_ctx(r, ctx, ngx_http_perl_module); } pmcf = ngx_http_get_module_main_conf(r, ngx_http_perl_module); { dTHXa(pmcf->perl); PERL_SET_CONTEXT(pmcf->perl); PERL_SET_INTERP(pmcf->perl); if (ctx->next == NULL) { plcf = ngx_http_get_module_loc_conf(r, ngx_http_perl_module); sub = plcf->sub; handler = &plcf->handler; } else { sub = ctx->next; handler = &ngx_null_name; ctx->next = NULL; } rc = ngx_http_perl_call_handler(aTHX_ r, pmcf->nginx, sub, NULL, handler, NULL); } ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "perl handler done: %i", rc); if (rc == NGX_DONE) { ngx_http_finalize_request(r, rc); return; } if (rc > 600) { rc = NGX_OK; } if (ctx->redirect_uri.len) { uri = ctx->redirect_uri; args = ctx->redirect_args; } else { uri.len = 0; } ctx->filename.data = NULL; ctx->redirect_uri.len = 0; if (ctx->done || ctx->next) { ngx_http_finalize_request(r, NGX_DONE); return; } if (uri.len) { ngx_http_internal_redirect(r, &uri, &args); ngx_http_finalize_request(r, NGX_DONE); return; } if (rc == NGX_OK || rc == NGX_HTTP_OK) { ngx_http_send_special(r, NGX_HTTP_LAST); ctx->done = 1; } ngx_http_finalize_request(r, rc); } void ngx_http_perl_sleep_handler(ngx_http_request_t *r) { ngx_event_t *wev; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "perl sleep handler"); wev = r->connection->write; if (wev->delayed) { if (ngx_handle_write_event(wev, 0) != NGX_OK) { ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); } return; } ngx_http_perl_handle_request(r); } static ngx_int_t ngx_http_perl_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { ngx_http_perl_variable_t *pv = (ngx_http_perl_variable_t *) data; ngx_int_t rc; ngx_str_t value; ngx_http_perl_ctx_t *ctx; ngx_http_perl_main_conf_t *pmcf; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "perl variable handler"); ctx = ngx_http_get_module_ctx(r, ngx_http_perl_module); if (ctx == NULL) { ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_perl_ctx_t)); if (ctx == NULL) { return NGX_ERROR; } ngx_http_set_ctx(r, ctx, ngx_http_perl_module); } pmcf = ngx_http_get_module_main_conf(r, ngx_http_perl_module); value.data = NULL; { dTHXa(pmcf->perl); PERL_SET_CONTEXT(pmcf->perl); PERL_SET_INTERP(pmcf->perl); rc = ngx_http_perl_call_handler(aTHX_ r, pmcf->nginx, pv->sub, NULL, &pv->handler, &value); } if (value.data) { v->len = value.len; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; v->data = value.data; } else { v->not_found = 1; } ctx->filename.data = NULL; ctx->redirect_uri.len = 0; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "perl variable done"); return rc; } #if (NGX_HTTP_SSI) static ngx_int_t ngx_http_perl_ssi(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ssi_ctx, ngx_str_t **params) { SV *sv, **asv; ngx_int_t rc; ngx_str_t *handler, **args; ngx_uint_t i; ngx_http_perl_ctx_t *ctx; ngx_http_perl_main_conf_t *pmcf; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "perl ssi handler"); ctx = ngx_http_get_module_ctx(r, ngx_http_perl_module); if (ctx == NULL) { ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_perl_ctx_t)); if (ctx == NULL) { return NGX_ERROR; } ngx_http_set_ctx(r, ctx, ngx_http_perl_module); } pmcf = ngx_http_get_module_main_conf(r, ngx_http_perl_module); ctx->ssi = ssi_ctx; handler = params[NGX_HTTP_PERL_SSI_SUB]; handler->data[handler->len] = '\0'; { dTHXa(pmcf->perl); PERL_SET_CONTEXT(pmcf->perl); PERL_SET_INTERP(pmcf->perl); #if 0 /* the code is disabled to force the precompiled perl code using only */ ngx_http_perl_eval_anon_sub(aTHX_ handler, &sv); if (sv == &PL_sv_undef) { ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "eval_pv(\"%V\") failed", handler); return NGX_ERROR; } if (sv == NULL) { sv = newSVpvn((char *) handler->data, handler->len); } #endif sv = newSVpvn((char *) handler->data, handler->len); args = ¶ms[NGX_HTTP_PERL_SSI_ARG]; if (args[0]) { for (i = 0; args[i]; i++) { /* void */ } asv = ngx_pcalloc(r->pool, (i + 1) * sizeof(SV *)); if (asv == NULL) { SvREFCNT_dec(sv); return NGX_ERROR; } asv[0] = (SV *) (uintptr_t) i; for (i = 0; args[i]; i++) { asv[i + 1] = newSVpvn((char *) args[i]->data, args[i]->len); } } else { asv = NULL; } rc = ngx_http_perl_call_handler(aTHX_ r, pmcf->nginx, sv, asv, handler, NULL); SvREFCNT_dec(sv); } ctx->filename.data = NULL; ctx->redirect_uri.len = 0; ctx->ssi = NULL; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "perl ssi done"); return rc; } #endif static char * ngx_http_perl_init_interpreter(ngx_conf_t *cf, ngx_http_perl_main_conf_t *pmcf) { ngx_str_t *m; ngx_uint_t i; #if (NGX_HAVE_PERL_MULTIPLICITY) ngx_pool_cleanup_t *cln; cln = ngx_pool_cleanup_add(cf->pool, 0); if (cln == NULL) { return NGX_CONF_ERROR; } #endif #ifdef NGX_PERL_MODULES if (pmcf->modules == NGX_CONF_UNSET_PTR) { pmcf->modules = ngx_array_create(cf->pool, 1, sizeof(ngx_str_t)); if (pmcf->modules == NULL) { return NGX_CONF_ERROR; } m = ngx_array_push(pmcf->modules); if (m == NULL) { return NGX_CONF_ERROR; } ngx_str_set(m, NGX_PERL_MODULES); } #endif if (pmcf->modules != NGX_CONF_UNSET_PTR) { m = pmcf->modules->elts; for (i = 0; i < pmcf->modules->nelts; i++) { if (ngx_conf_full_name(cf->cycle, &m[i], 0) != NGX_OK) { return NGX_CONF_ERROR; } } } #if !(NGX_HAVE_PERL_MULTIPLICITY) if (perl) { if (ngx_set_environment(cf->cycle, NULL) == NULL) { return NGX_CONF_ERROR; } if (ngx_http_perl_run_requires(aTHX_ pmcf->requires, cf->log) != NGX_OK) { return NGX_CONF_ERROR; } pmcf->perl = perl; pmcf->nginx = nginx_stash; return NGX_CONF_OK; } #endif if (nginx_stash == NULL) { PERL_SYS_INIT(&ngx_argc, &ngx_argv); } pmcf->perl = ngx_http_perl_create_interpreter(cf, pmcf); if (pmcf->perl == NULL) { return NGX_CONF_ERROR; } pmcf->nginx = nginx_stash; #if (NGX_HAVE_PERL_MULTIPLICITY) cln->handler = ngx_http_perl_cleanup_perl; cln->data = pmcf->perl; #else perl = pmcf->perl; #endif return NGX_CONF_OK; } static PerlInterpreter * ngx_http_perl_create_interpreter(ngx_conf_t *cf, ngx_http_perl_main_conf_t *pmcf) { int n; STRLEN len; SV *sv; char *ver, **embedding; ngx_str_t *m; ngx_uint_t i; PerlInterpreter *perl; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, cf->log, 0, "create perl interpreter"); if (ngx_set_environment(cf->cycle, NULL) == NULL) { return NULL; } perl = perl_alloc(); if (perl == NULL) { ngx_log_error(NGX_LOG_ALERT, cf->log, 0, "perl_alloc() failed"); return NULL; } { dTHXa(perl); PERL_SET_CONTEXT(perl); PERL_SET_INTERP(perl); perl_construct(perl); #ifdef PERL_EXIT_DESTRUCT_END PL_exit_flags |= PERL_EXIT_DESTRUCT_END; #endif n = (pmcf->modules != NGX_CONF_UNSET_PTR) ? pmcf->modules->nelts * 2 : 0; embedding = ngx_palloc(cf->pool, (5 + n) * sizeof(char *)); if (embedding == NULL) { goto fail; } embedding[0] = ""; if (n++) { m = pmcf->modules->elts; for (i = 0; i < pmcf->modules->nelts; i++) { embedding[2 * i + 1] = "-I"; embedding[2 * i + 2] = (char *) m[i].data; } } embedding[n++] = "-Mnginx"; embedding[n++] = "-e"; embedding[n++] = "0"; embedding[n] = NULL; n = perl_parse(perl, ngx_http_perl_xs_init, n, embedding, NULL); if (n != 0) { ngx_log_error(NGX_LOG_ALERT, cf->log, 0, "perl_parse() failed: %d", n); goto fail; } sv = get_sv("nginx::VERSION", FALSE); ver = SvPV(sv, len); if (ngx_strcmp(ver, NGINX_VERSION) != 0) { ngx_log_error(NGX_LOG_ALERT, cf->log, 0, "version " NGINX_VERSION " of nginx.pm is required, " "but %s was found", ver); goto fail; } if (ngx_http_perl_run_requires(aTHX_ pmcf->requires, cf->log) != NGX_OK) { goto fail; } } return perl; fail: (void) perl_destruct(perl); perl_free(perl); return NULL; } static ngx_int_t ngx_http_perl_run_requires(pTHX_ ngx_array_t *requires, ngx_log_t *log) { u_char *err; STRLEN len; ngx_str_t *script; ngx_uint_t i; if (requires == NGX_CONF_UNSET_PTR) { return NGX_OK; } script = requires->elts; for (i = 0; i < requires->nelts; i++) { require_pv((char *) script[i].data); if (SvTRUE(ERRSV)) { err = (u_char *) SvPV(ERRSV, len); while (--len && (err[len] == CR || err[len] == LF)) { /* void */ } ngx_log_error(NGX_LOG_EMERG, log, 0, "require_pv(\"%s\") failed: \"%*s\"", script[i].data, len + 1, err); return NGX_ERROR; } } return NGX_OK; } static ngx_int_t ngx_http_perl_call_handler(pTHX_ ngx_http_request_t *r, HV *nginx, SV *sub, SV **args, ngx_str_t *handler, ngx_str_t *rv) { SV *sv; int n, status; char *line; u_char *err; STRLEN len, n_a; ngx_uint_t i; ngx_connection_t *c; dSP; status = 0; ENTER; SAVETMPS; PUSHMARK(sp); sv = sv_2mortal(sv_bless(newRV_noinc(newSViv(PTR2IV(r))), nginx)); XPUSHs(sv); if (args) { EXTEND(sp, (intptr_t) args[0]); for (i = 1; i <= (uintptr_t) args[0]; i++) { PUSHs(sv_2mortal(args[i])); } } PUTBACK; c = r->connection; n = call_sv(sub, G_EVAL); SPAGAIN; if (n) { if (rv == NULL) { status = POPi; ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "call_sv: %d", status); } else { line = SvPVx(POPs, n_a); rv->len = n_a; rv->data = ngx_pnalloc(r->pool, n_a); if (rv->data == NULL) { return NGX_ERROR; } ngx_memcpy(rv->data, line, n_a); } } PUTBACK; FREETMPS; LEAVE; /* check $@ */ if (SvTRUE(ERRSV)) { err = (u_char *) SvPV(ERRSV, len); while (--len && (err[len] == CR || err[len] == LF)) { /* void */ } ngx_log_error(NGX_LOG_ERR, c->log, 0, "call_sv(\"%V\") failed: \"%*s\"", handler, len + 1, err); if (rv) { return NGX_ERROR; } return NGX_HTTP_INTERNAL_SERVER_ERROR; } if (n != 1) { ngx_log_error(NGX_LOG_ALERT, c->log, 0, "call_sv(\"%V\") returned %d results", handler, n); status = NGX_OK; } if (rv) { return NGX_OK; } return (ngx_int_t) status; } static void ngx_http_perl_eval_anon_sub(pTHX_ ngx_str_t *handler, SV **sv) { u_char *p; for (p = handler->data; *p; p++) { if (*p != ' ' && *p != '\t' && *p != CR && *p != LF) { break; } } if (ngx_strncmp(p, "sub ", 4) == 0 || ngx_strncmp(p, "sub{", 4) == 0 || ngx_strncmp(p, "use ", 4) == 0) { *sv = eval_pv((char *) p, FALSE); /* eval_pv() does not set ERRSV on failure */ return; } *sv = NULL; } static void * ngx_http_perl_create_main_conf(ngx_conf_t *cf) { ngx_http_perl_main_conf_t *pmcf; pmcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_perl_main_conf_t)); if (pmcf == NULL) { return NULL; } pmcf->modules = NGX_CONF_UNSET_PTR; pmcf->requires = NGX_CONF_UNSET_PTR; return pmcf; } static char * ngx_http_perl_init_main_conf(ngx_conf_t *cf, void *conf) { ngx_http_perl_main_conf_t *pmcf = conf; if (pmcf->perl == NULL) { if (ngx_http_perl_init_interpreter(cf, pmcf) != NGX_CONF_OK) { return NGX_CONF_ERROR; } } return NGX_CONF_OK; } #if (NGX_HAVE_PERL_MULTIPLICITY) static void ngx_http_perl_cleanup_perl(void *data) { PerlInterpreter *perl = data; PERL_SET_CONTEXT(perl); PERL_SET_INTERP(perl); (void) perl_destruct(perl); perl_free(perl); if (ngx_perl_term) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, "perl term"); PERL_SYS_TERM(); } } #endif static ngx_int_t ngx_http_perl_preconfiguration(ngx_conf_t *cf) { #if (NGX_HTTP_SSI) ngx_int_t rc; ngx_http_ssi_main_conf_t *smcf; smcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_ssi_filter_module); rc = ngx_hash_add_key(&smcf->commands, &ngx_http_perl_ssi_command.name, &ngx_http_perl_ssi_command, NGX_HASH_READONLY_KEY); if (rc != NGX_OK) { if (rc == NGX_BUSY) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "conflicting SSI command \"%V\"", &ngx_http_perl_ssi_command.name); } return NGX_ERROR; } #endif return NGX_OK; } static void * ngx_http_perl_create_loc_conf(ngx_conf_t *cf) { ngx_http_perl_loc_conf_t *plcf; plcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_perl_loc_conf_t)); if (plcf == NULL) { return NULL; } /* * set by ngx_pcalloc(): * * plcf->handler = { 0, NULL }; */ return plcf; } static char * ngx_http_perl_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) { ngx_http_perl_loc_conf_t *prev = parent; ngx_http_perl_loc_conf_t *conf = child; if (conf->sub == NULL) { conf->sub = prev->sub; conf->handler = prev->handler; } return NGX_CONF_OK; } static char * ngx_http_perl(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_perl_loc_conf_t *plcf = conf; ngx_str_t *value; ngx_http_core_loc_conf_t *clcf; ngx_http_perl_main_conf_t *pmcf; value = cf->args->elts; if (plcf->handler.data) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "duplicate perl handler \"%V\"", &value[1]); return NGX_CONF_ERROR; } pmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_perl_module); if (pmcf->perl == NULL) { if (ngx_http_perl_init_interpreter(cf, pmcf) != NGX_CONF_OK) { return NGX_CONF_ERROR; } } plcf->handler = value[1]; { dTHXa(pmcf->perl); PERL_SET_CONTEXT(pmcf->perl); PERL_SET_INTERP(pmcf->perl); ngx_http_perl_eval_anon_sub(aTHX_ &value[1], &plcf->sub); if (plcf->sub == &PL_sv_undef) { ngx_conf_log_error(NGX_LOG_ERR, cf, 0, "eval_pv(\"%V\") failed", &value[1]); return NGX_CONF_ERROR; } if (plcf->sub == NULL) { plcf->sub = newSVpvn((char *) value[1].data, value[1].len); } } clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); clcf->handler = ngx_http_perl_handler; return NGX_CONF_OK; } static char * ngx_http_perl_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_int_t index; ngx_str_t *value; ngx_http_variable_t *v; ngx_http_perl_variable_t *pv; ngx_http_perl_main_conf_t *pmcf; value = cf->args->elts; if (value[1].data[0] != '$') { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid variable name \"%V\"", &value[1]); return NGX_CONF_ERROR; } value[1].len--; value[1].data++; v = ngx_http_add_variable(cf, &value[1], NGX_HTTP_VAR_CHANGEABLE); if (v == NULL) { return NGX_CONF_ERROR; } pv = ngx_palloc(cf->pool, sizeof(ngx_http_perl_variable_t)); if (pv == NULL) { return NGX_CONF_ERROR; } index = ngx_http_get_variable_index(cf, &value[1]); if (index == NGX_ERROR) { return NGX_CONF_ERROR; } pmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_perl_module); if (pmcf->perl == NULL) { if (ngx_http_perl_init_interpreter(cf, pmcf) != NGX_CONF_OK) { return NGX_CONF_ERROR; } } pv->handler = value[2]; { dTHXa(pmcf->perl); PERL_SET_CONTEXT(pmcf->perl); PERL_SET_INTERP(pmcf->perl); ngx_http_perl_eval_anon_sub(aTHX_ &value[2], &pv->sub); if (pv->sub == &PL_sv_undef) { ngx_conf_log_error(NGX_LOG_ERR, cf, 0, "eval_pv(\"%V\") failed", &value[2]); return NGX_CONF_ERROR; } if (pv->sub == NULL) { pv->sub = newSVpvn((char *) value[2].data, value[2].len); } } v->get_handler = ngx_http_perl_variable; v->data = (uintptr_t) pv; return NGX_CONF_OK; } static ngx_int_t ngx_http_perl_init_worker(ngx_cycle_t *cycle) { ngx_http_perl_main_conf_t *pmcf; pmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_perl_module); if (pmcf) { dTHXa(pmcf->perl); PERL_SET_CONTEXT(pmcf->perl); PERL_SET_INTERP(pmcf->perl); /* set worker's $$ */ sv_setiv(GvSV(gv_fetchpv("$", TRUE, SVt_PV)), (I32) ngx_pid); } return NGX_OK; } static void ngx_http_perl_exit(ngx_cycle_t *cycle) { #if (NGX_HAVE_PERL_MULTIPLICITY) /* * the master exit hook is run before global pool cleanup, * therefore just set flag here */ ngx_perl_term = 1; #else if (nginx_stash) { ngx_log_debug0(NGX_LOG_DEBUG_HTTP, cycle->log, 0, "perl term"); (void) perl_destruct(perl); perl_free(perl); PERL_SYS_TERM(); } #endif }