Mercurial > hg > nginx-quic
view src/http/modules/ngx_http_rewrite_module.c @ 4009:3183165283cc
Fixing proxy_set_body and proxy_pass_request_body with SSL.
Flush flag wasn't set in constructed buffer and this prevented any data
from being actually sent to upstream due to SSL buffering. Make sure
we always set flush in the last buffer we are going to sent.
See here for report:
http://nginx.org/pipermail/nginx-ru/2011-June/041552.html
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 18 Aug 2011 16:34:24 +0000 |
parents | 187783310b65 |
children | 7f64de1cc2c0 |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> typedef struct { ngx_array_t *codes; /* uintptr_t */ ngx_uint_t stack_size; ngx_flag_t log; ngx_flag_t uninitialized_variable_warn; } ngx_http_rewrite_loc_conf_t; static void *ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf); static char *ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child); static ngx_int_t ngx_http_rewrite_init(ngx_conf_t *cf); static char *ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char *ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char * ngx_http_rewrite_if_condition(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf); static char *ngx_http_rewrite_variable(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value); static char *ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static char * ngx_http_rewrite_value(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value); static ngx_command_t ngx_http_rewrite_commands[] = { { ngx_string("rewrite"), NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF |NGX_CONF_TAKE23, ngx_http_rewrite, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL }, { ngx_string("return"), NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF |NGX_CONF_TAKE12, ngx_http_rewrite_return, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL }, { ngx_string("break"), NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF |NGX_CONF_NOARGS, ngx_http_rewrite_break, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL }, { ngx_string("if"), NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_BLOCK|NGX_CONF_1MORE, ngx_http_rewrite_if, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL }, { ngx_string("set"), NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF |NGX_CONF_TAKE2, ngx_http_rewrite_set, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL }, { ngx_string("rewrite_log"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF |NGX_HTTP_LIF_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_rewrite_loc_conf_t, log), NULL }, { ngx_string("uninitialized_variable_warn"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_SIF_CONF|NGX_HTTP_LOC_CONF |NGX_HTTP_LIF_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_rewrite_loc_conf_t, uninitialized_variable_warn), NULL }, ngx_null_command }; static ngx_http_module_t ngx_http_rewrite_module_ctx = { NULL, /* preconfiguration */ ngx_http_rewrite_init, /* postconfiguration */ NULL, /* create main configuration */ NULL, /* init main configuration */ NULL, /* create server configuration */ NULL, /* merge server configuration */ ngx_http_rewrite_create_loc_conf, /* create location configration */ ngx_http_rewrite_merge_loc_conf /* merge location configration */ }; ngx_module_t ngx_http_rewrite_module = { NGX_MODULE_V1, &ngx_http_rewrite_module_ctx, /* module context */ ngx_http_rewrite_commands, /* module directives */ NGX_HTTP_MODULE, /* module type */ NULL, /* init master */ NULL, /* init module */ NULL, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; static ngx_int_t ngx_http_rewrite_handler(ngx_http_request_t *r) { ngx_http_script_code_pt code; ngx_http_script_engine_t *e; ngx_http_rewrite_loc_conf_t *rlcf; rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module); if (rlcf->codes == NULL) { return NGX_DECLINED; } e = ngx_pcalloc(r->pool, sizeof(ngx_http_script_engine_t)); if (e == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } e->sp = ngx_pcalloc(r->pool, rlcf->stack_size * sizeof(ngx_http_variable_value_t)); if (e->sp == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } e->ip = rlcf->codes->elts; e->request = r; e->quote = 1; e->log = rlcf->log; e->status = NGX_DECLINED; while (*(uintptr_t *) e->ip) { code = *(ngx_http_script_code_pt *) e->ip; code(e); } if (e->status == NGX_DECLINED) { return NGX_DECLINED; } if (r->err_status == 0) { return e->status; } return r->err_status; } static ngx_int_t ngx_http_rewrite_var(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { ngx_http_variable_t *var; ngx_http_core_main_conf_t *cmcf; ngx_http_rewrite_loc_conf_t *rlcf; rlcf = ngx_http_get_module_loc_conf(r, ngx_http_rewrite_module); if (rlcf->uninitialized_variable_warn == 0) { *v = ngx_http_variable_null_value; return NGX_OK; } cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); var = cmcf->variables.elts; /* * the ngx_http_rewrite_module sets variables directly in r->variables, * and they should be handled by ngx_http_get_indexed_variable(), * so the handler is called only if the variable is not initialized */ ngx_log_error(NGX_LOG_WARN, r->connection->log, 0, "using uninitialized \"%V\" variable", &var[data].name); *v = ngx_http_variable_null_value; return NGX_OK; } static void * ngx_http_rewrite_create_loc_conf(ngx_conf_t *cf) { ngx_http_rewrite_loc_conf_t *conf; conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_rewrite_loc_conf_t)); if (conf == NULL) { return NULL; } conf->stack_size = NGX_CONF_UNSET_UINT; conf->log = NGX_CONF_UNSET; conf->uninitialized_variable_warn = NGX_CONF_UNSET; return conf; } static char * ngx_http_rewrite_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) { ngx_http_rewrite_loc_conf_t *prev = parent; ngx_http_rewrite_loc_conf_t *conf = child; uintptr_t *code; ngx_conf_merge_value(conf->log, prev->log, 0); ngx_conf_merge_value(conf->uninitialized_variable_warn, prev->uninitialized_variable_warn, 1); ngx_conf_merge_uint_value(conf->stack_size, prev->stack_size, 10); if (conf->codes == NULL) { return NGX_CONF_OK; } if (conf->codes == prev->codes) { return NGX_CONF_OK; } code = ngx_array_push_n(conf->codes, sizeof(uintptr_t)); if (code == NULL) { return NGX_CONF_ERROR; } *code = (uintptr_t) NULL; return NGX_CONF_OK; } static ngx_int_t ngx_http_rewrite_init(ngx_conf_t *cf) { ngx_http_handler_pt *h; ngx_http_core_main_conf_t *cmcf; cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); h = ngx_array_push(&cmcf->phases[NGX_HTTP_SERVER_REWRITE_PHASE].handlers); if (h == NULL) { return NGX_ERROR; } *h = ngx_http_rewrite_handler; h = ngx_array_push(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers); if (h == NULL) { return NGX_ERROR; } *h = ngx_http_rewrite_handler; return NGX_OK; } static char * ngx_http_rewrite(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_rewrite_loc_conf_t *lcf = conf; ngx_str_t *value; ngx_uint_t last; ngx_regex_compile_t rc; ngx_http_script_code_pt *code; ngx_http_script_compile_t sc; ngx_http_script_regex_code_t *regex; ngx_http_script_regex_end_code_t *regex_end; u_char errstr[NGX_MAX_CONF_ERRSTR]; regex = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(ngx_http_script_regex_code_t)); if (regex == NULL) { return NGX_CONF_ERROR; } ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t)); value = cf->args->elts; ngx_memzero(&rc, sizeof(ngx_regex_compile_t)); rc.pattern = value[1]; rc.err.len = NGX_MAX_CONF_ERRSTR; rc.err.data = errstr; /* TODO: NGX_REGEX_CASELESS */ regex->regex = ngx_http_regex_compile(cf, &rc); if (regex->regex == NULL) { return NGX_CONF_ERROR; } regex->code = ngx_http_script_regex_start_code; regex->uri = 1; regex->name = value[1]; if (value[2].data[value[2].len - 1] == '?') { /* the last "?" drops the original arguments */ value[2].len--; } else { regex->add_args = 1; } last = 0; if (ngx_strncmp(value[2].data, "http://", sizeof("http://") - 1) == 0 || ngx_strncmp(value[2].data, "https://", sizeof("https://") - 1) == 0 || ngx_strncmp(value[2].data, "$scheme", sizeof("$scheme") - 1) == 0) { regex->status = NGX_HTTP_MOVED_TEMPORARILY; regex->redirect = 1; last = 1; } if (cf->args->nelts == 4) { if (ngx_strcmp(value[3].data, "last") == 0) { last = 1; } else if (ngx_strcmp(value[3].data, "break") == 0) { regex->break_cycle = 1; last = 1; } else if (ngx_strcmp(value[3].data, "redirect") == 0) { regex->status = NGX_HTTP_MOVED_TEMPORARILY; regex->redirect = 1; last = 1; } else if (ngx_strcmp(value[3].data, "permanent") == 0) { regex->status = NGX_HTTP_MOVED_PERMANENTLY; regex->redirect = 1; last = 1; } else { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", &value[3]); return NGX_CONF_ERROR; } } ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); sc.cf = cf; sc.source = &value[2]; sc.lengths = ®ex->lengths; sc.values = &lcf->codes; sc.variables = ngx_http_script_variables_count(&value[2]); sc.main = regex; sc.complete_lengths = 1; sc.compile_args = !regex->redirect; if (ngx_http_script_compile(&sc) != NGX_OK) { return NGX_CONF_ERROR; } regex = sc.main; regex->size = sc.size; regex->args = sc.args; if (sc.variables == 0 && !sc.dup_capture) { regex->lengths = NULL; } regex_end = ngx_http_script_add_code(lcf->codes, sizeof(ngx_http_script_regex_end_code_t), ®ex); if (regex_end == NULL) { return NGX_CONF_ERROR; } regex_end->code = ngx_http_script_regex_end_code; regex_end->uri = regex->uri; regex_end->args = regex->args; regex_end->add_args = regex->add_args; regex_end->redirect = regex->redirect; if (last) { code = ngx_http_script_add_code(lcf->codes, sizeof(uintptr_t), ®ex); if (code == NULL) { return NGX_CONF_ERROR; } *code = NULL; } regex->next = (u_char *) lcf->codes->elts + lcf->codes->nelts - (u_char *) regex; return NGX_CONF_OK; } static char * ngx_http_rewrite_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_rewrite_loc_conf_t *lcf = conf; u_char *p; ngx_str_t *value, *v; ngx_http_script_return_code_t *ret; ngx_http_compile_complex_value_t ccv; ret = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(ngx_http_script_return_code_t)); if (ret == NULL) { return NGX_CONF_ERROR; } value = cf->args->elts; ngx_memzero(ret, sizeof(ngx_http_script_return_code_t)); ret->code = ngx_http_script_return_code; p = value[1].data; ret->status = ngx_atoi(p, value[1].len); if (ret->status == (uintptr_t) NGX_ERROR) { if (cf->args->nelts == 2 && (ngx_strncmp(p, "http://", sizeof("http://") - 1) == 0 || ngx_strncmp(p, "https://", sizeof("https://") - 1) == 0 || ngx_strncmp(p, "$scheme", sizeof("$scheme") - 1) == 0)) { ret->status = NGX_HTTP_MOVED_TEMPORARILY; v = &value[1]; } else { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid return code \"%V\"", &value[1]); return NGX_CONF_ERROR; } } else { if (cf->args->nelts == 2) { return NGX_CONF_OK; } v = &value[2]; } ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ccv.cf = cf; ccv.value = v; ccv.complex_value = &ret->text; if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { return NGX_CONF_ERROR; } return NGX_CONF_OK; } static char * ngx_http_rewrite_break(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_rewrite_loc_conf_t *lcf = conf; ngx_http_script_code_pt *code; code = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(uintptr_t)); if (code == NULL) { return NGX_CONF_ERROR; } *code = ngx_http_script_break_code; return NGX_CONF_OK; } static char * ngx_http_rewrite_if(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_rewrite_loc_conf_t *lcf = conf; void *mconf; char *rv; u_char *elts; ngx_uint_t i; ngx_conf_t save; ngx_http_module_t *module; ngx_http_conf_ctx_t *ctx, *pctx; ngx_http_core_loc_conf_t *clcf, *pclcf; ngx_http_script_if_code_t *if_code; ngx_http_rewrite_loc_conf_t *nlcf; ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); if (ctx == NULL) { return NGX_CONF_ERROR; } pctx = cf->ctx; ctx->main_conf = pctx->main_conf; ctx->srv_conf = pctx->srv_conf; ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); if (ctx->loc_conf == NULL) { return NGX_CONF_ERROR; } for (i = 0; ngx_modules[i]; i++) { if (ngx_modules[i]->type != NGX_HTTP_MODULE) { continue; } module = ngx_modules[i]->ctx; if (module->create_loc_conf) { mconf = module->create_loc_conf(cf); if (mconf == NULL) { return NGX_CONF_ERROR; } ctx->loc_conf[ngx_modules[i]->ctx_index] = mconf; } } pclcf = pctx->loc_conf[ngx_http_core_module.ctx_index]; clcf = ctx->loc_conf[ngx_http_core_module.ctx_index]; clcf->loc_conf = ctx->loc_conf; clcf->name = pclcf->name; clcf->noname = 1; if (ngx_http_add_location(cf, &pclcf->locations, clcf) != NGX_OK) { return NGX_CONF_ERROR; } if (ngx_http_rewrite_if_condition(cf, lcf) != NGX_CONF_OK) { return NGX_CONF_ERROR; } if_code = ngx_array_push_n(lcf->codes, sizeof(ngx_http_script_if_code_t)); if (if_code == NULL) { return NGX_CONF_ERROR; } if_code->code = ngx_http_script_if_code; elts = lcf->codes->elts; /* the inner directives must be compiled to the same code array */ nlcf = ctx->loc_conf[ngx_http_rewrite_module.ctx_index]; nlcf->codes = lcf->codes; save = *cf; cf->ctx = ctx; if (pclcf->name.len == 0) { if_code->loc_conf = NULL; cf->cmd_type = NGX_HTTP_SIF_CONF; } else { if_code->loc_conf = ctx->loc_conf; cf->cmd_type = NGX_HTTP_LIF_CONF; } rv = ngx_conf_parse(cf, NULL); *cf = save; if (rv != NGX_CONF_OK) { return rv; } if (elts != lcf->codes->elts) { if_code = (ngx_http_script_if_code_t *) ((u_char *) if_code + ((u_char *) lcf->codes->elts - elts)); } if_code->next = (u_char *) lcf->codes->elts + lcf->codes->nelts - (u_char *) if_code; /* the code array belong to parent block */ nlcf->codes = NULL; return NGX_CONF_OK; } static char * ngx_http_rewrite_if_condition(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf) { u_char *p; size_t len; ngx_str_t *value; ngx_uint_t cur, last; ngx_regex_compile_t rc; ngx_http_script_code_pt *code; ngx_http_script_file_code_t *fop; ngx_http_script_regex_code_t *regex; u_char errstr[NGX_MAX_CONF_ERRSTR]; value = cf->args->elts; last = cf->args->nelts - 1; if (value[1].len < 1 || value[1].data[0] != '(') { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid condition \"%V\"", &value[1]); return NGX_CONF_ERROR; } if (value[1].len == 1) { cur = 2; } else { cur = 1; value[1].len--; value[1].data++; } if (value[last].len < 1 || value[last].data[value[last].len - 1] != ')') { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid condition \"%V\"", &value[last]); return NGX_CONF_ERROR; } if (value[last].len == 1) { last--; } else { value[last].len--; value[last].data[value[last].len] = '\0'; } len = value[cur].len; p = value[cur].data; if (len > 1 && p[0] == '$') { if (cur != last && cur + 2 != last) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid condition \"%V\"", &value[cur]); return NGX_CONF_ERROR; } if (ngx_http_rewrite_variable(cf, lcf, &value[cur]) != NGX_CONF_OK) { return NGX_CONF_ERROR; } if (cur == last) { return NGX_CONF_OK; } cur++; len = value[cur].len; p = value[cur].data; if (len == 1 && p[0] == '=') { if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { return NGX_CONF_ERROR; } code = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(uintptr_t)); if (code == NULL) { return NGX_CONF_ERROR; } *code = ngx_http_script_equal_code; return NGX_CONF_OK; } if (len == 2 && p[0] == '!' && p[1] == '=') { if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { return NGX_CONF_ERROR; } code = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(uintptr_t)); if (code == NULL) { return NGX_CONF_ERROR; } *code = ngx_http_script_not_equal_code; return NGX_CONF_OK; } if ((len == 1 && p[0] == '~') || (len == 2 && p[0] == '~' && p[1] == '*') || (len == 2 && p[0] == '!' && p[1] == '~') || (len == 3 && p[0] == '!' && p[1] == '~' && p[2] == '*')) { regex = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(ngx_http_script_regex_code_t)); if (regex == NULL) { return NGX_CONF_ERROR; } ngx_memzero(regex, sizeof(ngx_http_script_regex_code_t)); ngx_memzero(&rc, sizeof(ngx_regex_compile_t)); rc.pattern = value[last]; rc.options = (p[len - 1] == '*') ? NGX_REGEX_CASELESS : 0; rc.err.len = NGX_MAX_CONF_ERRSTR; rc.err.data = errstr; regex->regex = ngx_http_regex_compile(cf, &rc); if (regex->regex == NULL) { return NGX_CONF_ERROR; } regex->code = ngx_http_script_regex_start_code; regex->next = sizeof(ngx_http_script_regex_code_t); regex->test = 1; if (p[0] == '!') { regex->negative_test = 1; } regex->name = value[last]; return NGX_CONF_OK; } ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unexpected \"%V\" in condition", &value[cur]); return NGX_CONF_ERROR; } else if ((len == 2 && p[0] == '-') || (len == 3 && p[0] == '!' && p[1] == '-')) { if (cur + 1 != last) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid condition \"%V\"", &value[cur]); return NGX_CONF_ERROR; } value[last].data[value[last].len] = '\0'; value[last].len++; if (ngx_http_rewrite_value(cf, lcf, &value[last]) != NGX_CONF_OK) { return NGX_CONF_ERROR; } fop = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(ngx_http_script_file_code_t)); if (fop == NULL) { return NGX_CONF_ERROR; } fop->code = ngx_http_script_file_code; if (p[1] == 'f') { fop->op = ngx_http_script_file_plain; return NGX_CONF_OK; } if (p[1] == 'd') { fop->op = ngx_http_script_file_dir; return NGX_CONF_OK; } if (p[1] == 'e') { fop->op = ngx_http_script_file_exists; return NGX_CONF_OK; } if (p[1] == 'x') { fop->op = ngx_http_script_file_exec; return NGX_CONF_OK; } if (p[0] == '!') { if (p[2] == 'f') { fop->op = ngx_http_script_file_not_plain; return NGX_CONF_OK; } if (p[2] == 'd') { fop->op = ngx_http_script_file_not_dir; return NGX_CONF_OK; } if (p[2] == 'e') { fop->op = ngx_http_script_file_not_exists; return NGX_CONF_OK; } if (p[2] == 'x') { fop->op = ngx_http_script_file_not_exec; return NGX_CONF_OK; } } ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid condition \"%V\"", &value[cur]); return NGX_CONF_ERROR; } ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid condition \"%V\"", &value[cur]); return NGX_CONF_ERROR; } static char * ngx_http_rewrite_variable(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value) { ngx_int_t index; ngx_http_script_var_code_t *var_code; value->len--; value->data++; index = ngx_http_get_variable_index(cf, value); if (index == NGX_ERROR) { return NGX_CONF_ERROR; } var_code = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(ngx_http_script_var_code_t)); if (var_code == NULL) { return NGX_CONF_ERROR; } var_code->code = ngx_http_script_var_code; var_code->index = index; return NGX_CONF_OK; } static char * ngx_http_rewrite_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_rewrite_loc_conf_t *lcf = conf; ngx_int_t index; ngx_str_t *value; ngx_http_variable_t *v; ngx_http_script_var_code_t *vcode; ngx_http_script_var_handler_code_t *vhcode; 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; } index = ngx_http_get_variable_index(cf, &value[1]); if (index == NGX_ERROR) { return NGX_CONF_ERROR; } if (v->get_handler == NULL && ngx_strncasecmp(value[1].data, (u_char *) "http_", 5) != 0 && ngx_strncasecmp(value[1].data, (u_char *) "sent_http_", 10) != 0 && ngx_strncasecmp(value[1].data, (u_char *) "upstream_http_", 14) != 0) { v->get_handler = ngx_http_rewrite_var; v->data = index; } if (ngx_http_rewrite_value(cf, lcf, &value[2]) != NGX_CONF_OK) { return NGX_CONF_ERROR; } if (v->set_handler) { vhcode = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(ngx_http_script_var_handler_code_t)); if (vhcode == NULL) { return NGX_CONF_ERROR; } vhcode->code = ngx_http_script_var_set_handler_code; vhcode->handler = v->set_handler; vhcode->data = v->data; return NGX_CONF_OK; } vcode = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(ngx_http_script_var_code_t)); if (vcode == NULL) { return NGX_CONF_ERROR; } vcode->code = ngx_http_script_set_var_code; vcode->index = (uintptr_t) index; return NGX_CONF_OK; } static char * ngx_http_rewrite_value(ngx_conf_t *cf, ngx_http_rewrite_loc_conf_t *lcf, ngx_str_t *value) { ngx_int_t n; ngx_http_script_compile_t sc; ngx_http_script_value_code_t *val; ngx_http_script_complex_value_code_t *complex; n = ngx_http_script_variables_count(value); if (n == 0) { val = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(ngx_http_script_value_code_t)); if (val == NULL) { return NGX_CONF_ERROR; } n = ngx_atoi(value->data, value->len); if (n == NGX_ERROR) { n = 0; } val->code = ngx_http_script_value_code; val->value = (uintptr_t) n; val->text_len = (uintptr_t) value->len; val->text_data = (uintptr_t) value->data; return NGX_CONF_OK; } complex = ngx_http_script_start_code(cf->pool, &lcf->codes, sizeof(ngx_http_script_complex_value_code_t)); if (complex == NULL) { return NGX_CONF_ERROR; } complex->code = ngx_http_script_complex_value_code; complex->lengths = NULL; ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); sc.cf = cf; sc.source = value; sc.lengths = &complex->lengths; sc.values = &lcf->codes; sc.variables = n; sc.complete_lengths = 1; if (ngx_http_script_compile(&sc) != NGX_OK) { return NGX_CONF_ERROR; } return NGX_CONF_OK; }