Mercurial > hg > nginx
view src/core/ngx_conf_file.c @ 8045:aa28c802409f
Resolver: make TCP write timer event cancelable.
Similar to 70e65bf8dfd7, the change is made to ensure that the ability to
cancel resolver tasks is fully controlled by the caller. As mentioned in the
referenced commit, it is safe to make this timer cancelable because resolve
tasks can have their own timeouts that are not cancelable.
The scenario where this may become a problem is a periodic background resolve
task (not tied to a specific request or a client connection), which receives a
response with short TTL, large enough to warrant fallback to a TCP query.
With each event loop wakeup, we either have a previously set write timer
instance or schedule a new one. The non-cancelable write timer can delay or
block graceful shutdown of a worker even if the ngx_resolver_ctx_t->cancelable
flag is set by the API user, and there are no other tasks or connections.
We use the resolver API in this way to maintain the list of upstream server
addresses specified with the 'resolve' parameter, and there could be third-party
modules implementing similar logic.
author | Aleksei Bavshin <a.bavshin@f5.com> |
---|---|
date | Wed, 01 Jun 2022 20:17:23 -0700 |
parents | 485dba3e2a01 |
children | 3108d4d668e4 |
line wrap: on
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #define NGX_CONF_BUFFER 4096 static ngx_int_t ngx_conf_add_dump(ngx_conf_t *cf, ngx_str_t *filename); static ngx_int_t ngx_conf_handler(ngx_conf_t *cf, ngx_int_t last); static ngx_int_t ngx_conf_read_token(ngx_conf_t *cf); static void ngx_conf_flush_files(ngx_cycle_t *cycle); static ngx_command_t ngx_conf_commands[] = { { ngx_string("include"), NGX_ANY_CONF|NGX_CONF_TAKE1, ngx_conf_include, 0, 0, NULL }, ngx_null_command }; ngx_module_t ngx_conf_module = { NGX_MODULE_V1, NULL, /* module context */ ngx_conf_commands, /* module directives */ NGX_CONF_MODULE, /* module type */ NULL, /* init master */ NULL, /* init module */ NULL, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ ngx_conf_flush_files, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; /* The eight fixed arguments */ static ngx_uint_t argument_number[] = { NGX_CONF_NOARGS, NGX_CONF_TAKE1, NGX_CONF_TAKE2, NGX_CONF_TAKE3, NGX_CONF_TAKE4, NGX_CONF_TAKE5, NGX_CONF_TAKE6, NGX_CONF_TAKE7 }; char * ngx_conf_param(ngx_conf_t *cf) { char *rv; ngx_str_t *param; ngx_buf_t b; ngx_conf_file_t conf_file; param = &cf->cycle->conf_param; if (param->len == 0) { return NGX_CONF_OK; } ngx_memzero(&conf_file, sizeof(ngx_conf_file_t)); ngx_memzero(&b, sizeof(ngx_buf_t)); b.start = param->data; b.pos = param->data; b.last = param->data + param->len; b.end = b.last; b.temporary = 1; conf_file.file.fd = NGX_INVALID_FILE; conf_file.file.name.data = NULL; conf_file.line = 0; cf->conf_file = &conf_file; cf->conf_file->buffer = &b; rv = ngx_conf_parse(cf, NULL); cf->conf_file = NULL; return rv; } static ngx_int_t ngx_conf_add_dump(ngx_conf_t *cf, ngx_str_t *filename) { off_t size; u_char *p; uint32_t hash; ngx_buf_t *buf; ngx_str_node_t *sn; ngx_conf_dump_t *cd; hash = ngx_crc32_long(filename->data, filename->len); sn = ngx_str_rbtree_lookup(&cf->cycle->config_dump_rbtree, filename, hash); if (sn) { cf->conf_file->dump = NULL; return NGX_OK; } p = ngx_pstrdup(cf->cycle->pool, filename); if (p == NULL) { return NGX_ERROR; } cd = ngx_array_push(&cf->cycle->config_dump); if (cd == NULL) { return NGX_ERROR; } size = ngx_file_size(&cf->conf_file->file.info); buf = ngx_create_temp_buf(cf->cycle->pool, (size_t) size); if (buf == NULL) { return NGX_ERROR; } cd->name.data = p; cd->name.len = filename->len; cd->buffer = buf; cf->conf_file->dump = buf; sn = ngx_palloc(cf->temp_pool, sizeof(ngx_str_node_t)); if (sn == NULL) { return NGX_ERROR; } sn->node.key = hash; sn->str = cd->name; ngx_rbtree_insert(&cf->cycle->config_dump_rbtree, &sn->node); return NGX_OK; } char * ngx_conf_parse(ngx_conf_t *cf, ngx_str_t *filename) { char *rv; ngx_fd_t fd; ngx_int_t rc; ngx_buf_t buf; ngx_conf_file_t *prev, conf_file; enum { parse_file = 0, parse_block, parse_param } type; #if (NGX_SUPPRESS_WARN) fd = NGX_INVALID_FILE; prev = NULL; #endif if (filename) { /* open configuration file */ fd = ngx_open_file(filename->data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0); if (fd == NGX_INVALID_FILE) { ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno, ngx_open_file_n " \"%s\" failed", filename->data); return NGX_CONF_ERROR; } prev = cf->conf_file; cf->conf_file = &conf_file; if (ngx_fd_info(fd, &cf->conf_file->file.info) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_EMERG, cf->log, ngx_errno, ngx_fd_info_n " \"%s\" failed", filename->data); } cf->conf_file->buffer = &buf; buf.start = ngx_alloc(NGX_CONF_BUFFER, cf->log); if (buf.start == NULL) { goto failed; } buf.pos = buf.start; buf.last = buf.start; buf.end = buf.last + NGX_CONF_BUFFER; buf.temporary = 1; cf->conf_file->file.fd = fd; cf->conf_file->file.name.len = filename->len; cf->conf_file->file.name.data = filename->data; cf->conf_file->file.offset = 0; cf->conf_file->file.log = cf->log; cf->conf_file->line = 1; type = parse_file; if (ngx_dump_config #if (NGX_DEBUG) || 1 #endif ) { if (ngx_conf_add_dump(cf, filename) != NGX_OK) { goto failed; } } else { cf->conf_file->dump = NULL; } } else if (cf->conf_file->file.fd != NGX_INVALID_FILE) { type = parse_block; } else { type = parse_param; } for ( ;; ) { rc = ngx_conf_read_token(cf); /* * ngx_conf_read_token() may return * * NGX_ERROR there is error * NGX_OK the token terminated by ";" was found * NGX_CONF_BLOCK_START the token terminated by "{" was found * NGX_CONF_BLOCK_DONE the "}" was found * NGX_CONF_FILE_DONE the configuration file is done */ if (rc == NGX_ERROR) { goto done; } if (rc == NGX_CONF_BLOCK_DONE) { if (type != parse_block) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unexpected \"}\""); goto failed; } goto done; } if (rc == NGX_CONF_FILE_DONE) { if (type == parse_block) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unexpected end of file, expecting \"}\""); goto failed; } goto done; } if (rc == NGX_CONF_BLOCK_START) { if (type == parse_param) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "block directives are not supported " "in -g option"); goto failed; } } /* rc == NGX_OK || rc == NGX_CONF_BLOCK_START */ if (cf->handler) { /* * the custom handler, i.e., that is used in the http's * "types { ... }" directive */ if (rc == NGX_CONF_BLOCK_START) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unexpected \"{\""); goto failed; } rv = (*cf->handler)(cf, NULL, cf->handler_conf); if (rv == NGX_CONF_OK) { continue; } if (rv == NGX_CONF_ERROR) { goto failed; } ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%s", rv); goto failed; } rc = ngx_conf_handler(cf, rc); if (rc == NGX_ERROR) { goto failed; } } failed: rc = NGX_ERROR; done: if (filename) { if (cf->conf_file->buffer->start) { ngx_free(cf->conf_file->buffer->start); } if (ngx_close_file(fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno, ngx_close_file_n " %s failed", filename->data); rc = NGX_ERROR; } cf->conf_file = prev; } if (rc == NGX_ERROR) { return NGX_CONF_ERROR; } return NGX_CONF_OK; } static ngx_int_t ngx_conf_handler(ngx_conf_t *cf, ngx_int_t last) { char *rv; void *conf, **confp; ngx_uint_t i, found; ngx_str_t *name; ngx_command_t *cmd; name = cf->args->elts; found = 0; for (i = 0; cf->cycle->modules[i]; i++) { cmd = cf->cycle->modules[i]->commands; if (cmd == NULL) { continue; } for ( /* void */ ; cmd->name.len; cmd++) { if (name->len != cmd->name.len) { continue; } if (ngx_strcmp(name->data, cmd->name.data) != 0) { continue; } found = 1; if (cf->cycle->modules[i]->type != NGX_CONF_MODULE && cf->cycle->modules[i]->type != cf->module_type) { continue; } /* is the directive's location right ? */ if (!(cmd->type & cf->cmd_type)) { continue; } if (!(cmd->type & NGX_CONF_BLOCK) && last != NGX_OK) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "directive \"%s\" is not terminated by \";\"", name->data); return NGX_ERROR; } if ((cmd->type & NGX_CONF_BLOCK) && last != NGX_CONF_BLOCK_START) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "directive \"%s\" has no opening \"{\"", name->data); return NGX_ERROR; } /* is the directive's argument count right ? */ if (!(cmd->type & NGX_CONF_ANY)) { if (cmd->type & NGX_CONF_FLAG) { if (cf->args->nelts != 2) { goto invalid; } } else if (cmd->type & NGX_CONF_1MORE) { if (cf->args->nelts < 2) { goto invalid; } } else if (cmd->type & NGX_CONF_2MORE) { if (cf->args->nelts < 3) { goto invalid; } } else if (cf->args->nelts > NGX_CONF_MAX_ARGS) { goto invalid; } else if (!(cmd->type & argument_number[cf->args->nelts - 1])) { goto invalid; } } /* set up the directive's configuration context */ conf = NULL; if (cmd->type & NGX_DIRECT_CONF) { conf = ((void **) cf->ctx)[cf->cycle->modules[i]->index]; } else if (cmd->type & NGX_MAIN_CONF) { conf = &(((void **) cf->ctx)[cf->cycle->modules[i]->index]); } else if (cf->ctx) { confp = *(void **) ((char *) cf->ctx + cmd->conf); if (confp) { conf = confp[cf->cycle->modules[i]->ctx_index]; } } rv = cmd->set(cf, cmd, conf); if (rv == NGX_CONF_OK) { return NGX_OK; } if (rv == NGX_CONF_ERROR) { return NGX_ERROR; } ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"%s\" directive %s", name->data, rv); return NGX_ERROR; } } if (found) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"%s\" directive is not allowed here", name->data); return NGX_ERROR; } ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unknown directive \"%s\"", name->data); return NGX_ERROR; invalid: ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid number of arguments in \"%s\" directive", name->data); return NGX_ERROR; } static ngx_int_t ngx_conf_read_token(ngx_conf_t *cf) { u_char *start, ch, *src, *dst; off_t file_size; size_t len; ssize_t n, size; ngx_uint_t found, need_space, last_space, sharp_comment, variable; ngx_uint_t quoted, s_quoted, d_quoted, start_line; ngx_str_t *word; ngx_buf_t *b, *dump; found = 0; need_space = 0; last_space = 1; sharp_comment = 0; variable = 0; quoted = 0; s_quoted = 0; d_quoted = 0; cf->args->nelts = 0; b = cf->conf_file->buffer; dump = cf->conf_file->dump; start = b->pos; start_line = cf->conf_file->line; file_size = ngx_file_size(&cf->conf_file->file.info); for ( ;; ) { if (b->pos >= b->last) { if (cf->conf_file->file.offset >= file_size) { if (cf->args->nelts > 0 || !last_space) { if (cf->conf_file->file.fd == NGX_INVALID_FILE) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unexpected end of parameter, " "expecting \";\""); return NGX_ERROR; } ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unexpected end of file, " "expecting \";\" or \"}\""); return NGX_ERROR; } return NGX_CONF_FILE_DONE; } len = b->pos - start; if (len == NGX_CONF_BUFFER) { cf->conf_file->line = start_line; if (d_quoted) { ch = '"'; } else if (s_quoted) { ch = '\''; } else { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "too long parameter \"%*s...\" started", 10, start); return NGX_ERROR; } ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "too long parameter, probably " "missing terminating \"%c\" character", ch); return NGX_ERROR; } if (len) { ngx_memmove(b->start, start, len); } size = (ssize_t) (file_size - cf->conf_file->file.offset); if (size > b->end - (b->start + len)) { size = b->end - (b->start + len); } n = ngx_read_file(&cf->conf_file->file, b->start + len, size, cf->conf_file->file.offset); if (n == NGX_ERROR) { return NGX_ERROR; } if (n != size) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, ngx_read_file_n " returned " "only %z bytes instead of %z", n, size); return NGX_ERROR; } b->pos = b->start + len; b->last = b->pos + n; start = b->start; if (dump) { dump->last = ngx_cpymem(dump->last, b->pos, size); } } ch = *b->pos++; if (ch == LF) { cf->conf_file->line++; if (sharp_comment) { sharp_comment = 0; } } if (sharp_comment) { continue; } if (quoted) { quoted = 0; continue; } if (need_space) { if (ch == ' ' || ch == '\t' || ch == CR || ch == LF) { last_space = 1; need_space = 0; continue; } if (ch == ';') { return NGX_OK; } if (ch == '{') { return NGX_CONF_BLOCK_START; } if (ch == ')') { last_space = 1; need_space = 0; } else { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unexpected \"%c\"", ch); return NGX_ERROR; } } if (last_space) { start = b->pos - 1; start_line = cf->conf_file->line; if (ch == ' ' || ch == '\t' || ch == CR || ch == LF) { continue; } switch (ch) { case ';': case '{': if (cf->args->nelts == 0) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unexpected \"%c\"", ch); return NGX_ERROR; } if (ch == '{') { return NGX_CONF_BLOCK_START; } return NGX_OK; case '}': if (cf->args->nelts != 0) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "unexpected \"}\""); return NGX_ERROR; } return NGX_CONF_BLOCK_DONE; case '#': sharp_comment = 1; continue; case '\\': quoted = 1; last_space = 0; continue; case '"': start++; d_quoted = 1; last_space = 0; continue; case '\'': start++; s_quoted = 1; last_space = 0; continue; case '$': variable = 1; last_space = 0; continue; default: last_space = 0; } } else { if (ch == '{' && variable) { continue; } variable = 0; if (ch == '\\') { quoted = 1; continue; } if (ch == '$') { variable = 1; continue; } if (d_quoted) { if (ch == '"') { d_quoted = 0; need_space = 1; found = 1; } } else if (s_quoted) { if (ch == '\'') { s_quoted = 0; need_space = 1; found = 1; } } else if (ch == ' ' || ch == '\t' || ch == CR || ch == LF || ch == ';' || ch == '{') { last_space = 1; found = 1; } if (found) { word = ngx_array_push(cf->args); if (word == NULL) { return NGX_ERROR; } word->data = ngx_pnalloc(cf->pool, b->pos - 1 - start + 1); if (word->data == NULL) { return NGX_ERROR; } for (dst = word->data, src = start, len = 0; src < b->pos - 1; len++) { if (*src == '\\') { switch (src[1]) { case '"': case '\'': case '\\': src++; break; case 't': *dst++ = '\t'; src += 2; continue; case 'r': *dst++ = '\r'; src += 2; continue; case 'n': *dst++ = '\n'; src += 2; continue; } } *dst++ = *src++; } *dst = '\0'; word->len = len; if (ch == ';') { return NGX_OK; } if (ch == '{') { return NGX_CONF_BLOCK_START; } found = 0; } } } } char * ngx_conf_include(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *rv; ngx_int_t n; ngx_str_t *value, file, name; ngx_glob_t gl; value = cf->args->elts; file = value[1]; ngx_log_debug1(NGX_LOG_DEBUG_CORE, cf->log, 0, "include %s", file.data); if (ngx_conf_full_name(cf->cycle, &file, 1) != NGX_OK) { return NGX_CONF_ERROR; } if (strpbrk((char *) file.data, "*?[") == NULL) { ngx_log_debug1(NGX_LOG_DEBUG_CORE, cf->log, 0, "include %s", file.data); return ngx_conf_parse(cf, &file); } ngx_memzero(&gl, sizeof(ngx_glob_t)); gl.pattern = file.data; gl.log = cf->log; gl.test = 1; if (ngx_open_glob(&gl) != NGX_OK) { ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno, ngx_open_glob_n " \"%s\" failed", file.data); return NGX_CONF_ERROR; } rv = NGX_CONF_OK; for ( ;; ) { n = ngx_read_glob(&gl, &name); if (n != NGX_OK) { break; } file.len = name.len++; file.data = ngx_pstrdup(cf->pool, &name); if (file.data == NULL) { return NGX_CONF_ERROR; } ngx_log_debug1(NGX_LOG_DEBUG_CORE, cf->log, 0, "include %s", file.data); rv = ngx_conf_parse(cf, &file); if (rv != NGX_CONF_OK) { break; } } ngx_close_glob(&gl); return rv; } ngx_int_t ngx_conf_full_name(ngx_cycle_t *cycle, ngx_str_t *name, ngx_uint_t conf_prefix) { ngx_str_t *prefix; prefix = conf_prefix ? &cycle->conf_prefix : &cycle->prefix; return ngx_get_full_name(cycle->pool, prefix, name); } ngx_open_file_t * ngx_conf_open_file(ngx_cycle_t *cycle, ngx_str_t *name) { ngx_str_t full; ngx_uint_t i; ngx_list_part_t *part; ngx_open_file_t *file; #if (NGX_SUPPRESS_WARN) ngx_str_null(&full); #endif if (name->len) { full = *name; if (ngx_conf_full_name(cycle, &full, 0) != NGX_OK) { return NULL; } part = &cycle->open_files.part; file = part->elts; for (i = 0; /* void */ ; i++) { if (i >= part->nelts) { if (part->next == NULL) { break; } part = part->next; file = part->elts; i = 0; } if (full.len != file[i].name.len) { continue; } if (ngx_strcmp(full.data, file[i].name.data) == 0) { return &file[i]; } } } file = ngx_list_push(&cycle->open_files); if (file == NULL) { return NULL; } if (name->len) { file->fd = NGX_INVALID_FILE; file->name = full; } else { file->fd = ngx_stderr; file->name = *name; } file->flush = NULL; file->data = NULL; return file; } static void ngx_conf_flush_files(ngx_cycle_t *cycle) { ngx_uint_t i; ngx_list_part_t *part; ngx_open_file_t *file; ngx_log_debug0(NGX_LOG_DEBUG_CORE, cycle->log, 0, "flush files"); part = &cycle->open_files.part; file = part->elts; for (i = 0; /* void */ ; i++) { if (i >= part->nelts) { if (part->next == NULL) { break; } part = part->next; file = part->elts; i = 0; } if (file[i].flush) { file[i].flush(&file[i], cycle->log); } } } void ngx_cdecl ngx_conf_log_error(ngx_uint_t level, ngx_conf_t *cf, ngx_err_t err, const char *fmt, ...) { u_char errstr[NGX_MAX_CONF_ERRSTR], *p, *last; va_list args; last = errstr + NGX_MAX_CONF_ERRSTR; va_start(args, fmt); p = ngx_vslprintf(errstr, last, fmt, args); va_end(args); if (err) { p = ngx_log_errno(p, last, err); } if (cf->conf_file == NULL) { ngx_log_error(level, cf->log, 0, "%*s", p - errstr, errstr); return; } if (cf->conf_file->file.fd == NGX_INVALID_FILE) { ngx_log_error(level, cf->log, 0, "%*s in command line", p - errstr, errstr); return; } ngx_log_error(level, cf->log, 0, "%*s in %s:%ui", p - errstr, errstr, cf->conf_file->file.name.data, cf->conf_file->line); } char * ngx_conf_set_flag_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *p = conf; ngx_str_t *value; ngx_flag_t *fp; ngx_conf_post_t *post; fp = (ngx_flag_t *) (p + cmd->offset); if (*fp != NGX_CONF_UNSET) { return "is duplicate"; } value = cf->args->elts; if (ngx_strcasecmp(value[1].data, (u_char *) "on") == 0) { *fp = 1; } else if (ngx_strcasecmp(value[1].data, (u_char *) "off") == 0) { *fp = 0; } else { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid value \"%s\" in \"%s\" directive, " "it must be \"on\" or \"off\"", value[1].data, cmd->name.data); return NGX_CONF_ERROR; } if (cmd->post) { post = cmd->post; return post->post_handler(cf, post, fp); } return NGX_CONF_OK; } char * ngx_conf_set_str_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *p = conf; ngx_str_t *field, *value; ngx_conf_post_t *post; field = (ngx_str_t *) (p + cmd->offset); if (field->data) { return "is duplicate"; } value = cf->args->elts; *field = value[1]; if (cmd->post) { post = cmd->post; return post->post_handler(cf, post, field); } return NGX_CONF_OK; } char * ngx_conf_set_str_array_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *p = conf; ngx_str_t *value, *s; ngx_array_t **a; ngx_conf_post_t *post; a = (ngx_array_t **) (p + cmd->offset); if (*a == NGX_CONF_UNSET_PTR) { *a = ngx_array_create(cf->pool, 4, sizeof(ngx_str_t)); if (*a == NULL) { return NGX_CONF_ERROR; } } s = ngx_array_push(*a); if (s == NULL) { return NGX_CONF_ERROR; } value = cf->args->elts; *s = value[1]; if (cmd->post) { post = cmd->post; return post->post_handler(cf, post, s); } return NGX_CONF_OK; } char * ngx_conf_set_keyval_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *p = conf; ngx_str_t *value; ngx_array_t **a; ngx_keyval_t *kv; ngx_conf_post_t *post; a = (ngx_array_t **) (p + cmd->offset); if (*a == NGX_CONF_UNSET_PTR || *a == NULL) { *a = ngx_array_create(cf->pool, 4, sizeof(ngx_keyval_t)); if (*a == NULL) { return NGX_CONF_ERROR; } } kv = ngx_array_push(*a); if (kv == NULL) { return NGX_CONF_ERROR; } value = cf->args->elts; kv->key = value[1]; kv->value = value[2]; if (cmd->post) { post = cmd->post; return post->post_handler(cf, post, kv); } return NGX_CONF_OK; } char * ngx_conf_set_num_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *p = conf; ngx_int_t *np; ngx_str_t *value; ngx_conf_post_t *post; np = (ngx_int_t *) (p + cmd->offset); if (*np != NGX_CONF_UNSET) { return "is duplicate"; } value = cf->args->elts; *np = ngx_atoi(value[1].data, value[1].len); if (*np == NGX_ERROR) { return "invalid number"; } if (cmd->post) { post = cmd->post; return post->post_handler(cf, post, np); } return NGX_CONF_OK; } char * ngx_conf_set_size_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *p = conf; size_t *sp; ngx_str_t *value; ngx_conf_post_t *post; sp = (size_t *) (p + cmd->offset); if (*sp != NGX_CONF_UNSET_SIZE) { return "is duplicate"; } value = cf->args->elts; *sp = ngx_parse_size(&value[1]); if (*sp == (size_t) NGX_ERROR) { return "invalid value"; } if (cmd->post) { post = cmd->post; return post->post_handler(cf, post, sp); } return NGX_CONF_OK; } char * ngx_conf_set_off_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *p = conf; off_t *op; ngx_str_t *value; ngx_conf_post_t *post; op = (off_t *) (p + cmd->offset); if (*op != NGX_CONF_UNSET) { return "is duplicate"; } value = cf->args->elts; *op = ngx_parse_offset(&value[1]); if (*op == (off_t) NGX_ERROR) { return "invalid value"; } if (cmd->post) { post = cmd->post; return post->post_handler(cf, post, op); } return NGX_CONF_OK; } char * ngx_conf_set_msec_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *p = conf; ngx_msec_t *msp; ngx_str_t *value; ngx_conf_post_t *post; msp = (ngx_msec_t *) (p + cmd->offset); if (*msp != NGX_CONF_UNSET_MSEC) { return "is duplicate"; } value = cf->args->elts; *msp = ngx_parse_time(&value[1], 0); if (*msp == (ngx_msec_t) NGX_ERROR) { return "invalid value"; } if (cmd->post) { post = cmd->post; return post->post_handler(cf, post, msp); } return NGX_CONF_OK; } char * ngx_conf_set_sec_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *p = conf; time_t *sp; ngx_str_t *value; ngx_conf_post_t *post; sp = (time_t *) (p + cmd->offset); if (*sp != NGX_CONF_UNSET) { return "is duplicate"; } value = cf->args->elts; *sp = ngx_parse_time(&value[1], 1); if (*sp == (time_t) NGX_ERROR) { return "invalid value"; } if (cmd->post) { post = cmd->post; return post->post_handler(cf, post, sp); } return NGX_CONF_OK; } char * ngx_conf_set_bufs_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *p = conf; ngx_str_t *value; ngx_bufs_t *bufs; bufs = (ngx_bufs_t *) (p + cmd->offset); if (bufs->num) { return "is duplicate"; } value = cf->args->elts; bufs->num = ngx_atoi(value[1].data, value[1].len); if (bufs->num == NGX_ERROR || bufs->num == 0) { return "invalid value"; } bufs->size = ngx_parse_size(&value[2]); if (bufs->size == (size_t) NGX_ERROR || bufs->size == 0) { return "invalid value"; } return NGX_CONF_OK; } char * ngx_conf_set_enum_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *p = conf; ngx_uint_t *np, i; ngx_str_t *value; ngx_conf_enum_t *e; np = (ngx_uint_t *) (p + cmd->offset); if (*np != NGX_CONF_UNSET_UINT) { return "is duplicate"; } value = cf->args->elts; e = cmd->post; for (i = 0; e[i].name.len != 0; i++) { if (e[i].name.len != value[1].len || ngx_strcasecmp(e[i].name.data, value[1].data) != 0) { continue; } *np = e[i].value; return NGX_CONF_OK; } ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid value \"%s\"", value[1].data); return NGX_CONF_ERROR; } char * ngx_conf_set_bitmask_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *p = conf; ngx_uint_t *np, i, m; ngx_str_t *value; ngx_conf_bitmask_t *mask; np = (ngx_uint_t *) (p + cmd->offset); value = cf->args->elts; mask = cmd->post; for (i = 1; i < cf->args->nelts; i++) { for (m = 0; mask[m].name.len != 0; m++) { if (mask[m].name.len != value[i].len || ngx_strcasecmp(mask[m].name.data, value[i].data) != 0) { continue; } if (*np & mask[m].mask) { ngx_conf_log_error(NGX_LOG_WARN, cf, 0, "duplicate value \"%s\"", value[i].data); } else { *np |= mask[m].mask; } break; } if (mask[m].name.len == 0) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid value \"%s\"", value[i].data); return NGX_CONF_ERROR; } } return NGX_CONF_OK; } #if 0 char * ngx_conf_unsupported(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { return "unsupported on this platform"; } #endif char * ngx_conf_deprecated(ngx_conf_t *cf, void *post, void *data) { ngx_conf_deprecated_t *d = post; ngx_conf_log_error(NGX_LOG_WARN, cf, 0, "the \"%s\" directive is deprecated, " "use the \"%s\" directive instead", d->old_name, d->new_name); return NGX_CONF_OK; } char * ngx_conf_check_num_bounds(ngx_conf_t *cf, void *post, void *data) { ngx_conf_num_bounds_t *bounds = post; ngx_int_t *np = data; if (bounds->high == -1) { if (*np >= bounds->low) { return NGX_CONF_OK; } ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "value must be equal to or greater than %i", bounds->low); return NGX_CONF_ERROR; } if (*np >= bounds->low && *np <= bounds->high) { return NGX_CONF_OK; } ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "value must be between %i and %i", bounds->low, bounds->high); return NGX_CONF_ERROR; }